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Realtek Semiconductor Corporation patents (2018 archive)


Recent patent applications related to Realtek Semiconductor Corporation. Realtek Semiconductor Corporation is listed as an Agent/Assignee. Note: Realtek Semiconductor Corporation may have other listings under different names/spellings. We're not affiliated with Realtek Semiconductor Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "R" | Realtek Semiconductor Corporation-related inventors


Double data rate synchronous dynamic random access memory and output driving circuit thereof

A double data rate synchronous dynamic random access memory includes a control circuit and an output driving circuit. The control circuit provides a first voltage, a second voltage, a third voltage and a fourth voltage. ... Realtek Semiconductor Corporation

Memory card access module and memory card access method

This invention discloses a memory card access module and a memory card access method. The memory card access method is applied to an electronic device. ... Realtek Semiconductor Corporation

Detection device and detection method

A detection device for a power over ethernet (poe) system includes a detection circuit and a control circuit. The detection circuit provides a first test current to a powered device (pd) of the poe system, and measures multiple first voltage values after the pd that receives the first test current and before the pd reaches a steady state. ... Realtek Semiconductor Corporation

Image processing device and method thereof

An image processing method, applied to a device including a sensor and a processor connected to the sensor, the sensor including a plurality of pixels, in which each of the pixels senses three primary colors and an infrared ray of an image, the processor executing the method including: calculating a real response value of the infrared ray without a crosstalk interference from the three primary colors according to the crosstalk interference from the three primary colors to the infrared ray; calculating real response values of the three primary colors without a crosstalk interference from the infrared ray according to the crosstalk interference of the real response value from the infrared ray to the three primary colors; and increasing a brightness of the image according to a brightness of the real response value of the infrared ray and the real response values of the three primary colors.. . ... Realtek Semiconductor Corporation

Receiving circuit of wireless communication system and method of receiving rf signal

A method of receiving an rf signal is applied to a receiving circuit of a wireless communication system and amplifies the rf signals according to an analog gain. The rf signal includes data signals and interference signals. ... Realtek Semiconductor Corporation

Semiconductor element

A semiconductor element including first and second windings. The first winding is substantially located in a first metal layer of a semiconductor structure and includes a first outer coil, a first inner coil, and a first bridging structure. ... Realtek Semiconductor Corporation

Integrated inductor and fabrication method thereof

An inductor includes: a first coil of metal trace laid out to be symmetrical with respect to a first axis; a second coil of metal trace laid out to be substantially a mirror image of the first coil of metal trace with respect to a second axis; a first coupling capacitor configured to provide a capacitive coupling between a first segment within the first coil of metal trace and a counterpart of the first segment within the second coil of metal trace; and a second coupling capacitor configured to provide a capacitive coupling between a second segment within the first coil of metal trace and a counterpart of the second segment within the second coil of metal trace.. . ... Realtek Semiconductor Corporation

Wireless signal processing method and wireless device

A method for processing wireless signals and a wireless device are disclosed. The method for processing wireless signals is applied to the wireless device that includes an amplifier circuit amplifying wireless signals according to a base gain. ... Realtek Semiconductor Corporation

Demodulation method and receiving device

The present disclosure provides a demodulation method. The demodulation method includes obtaining a received signal; determining whether a multiuser interference is smaller than a threshold; performing a first signal detection operation on the received signal if the multiuser interference is smaller than the threshold, in which the first signal detection operation detects a single layer of spatial data in the received signal; and performing a second signal detection operation on the received signal if the multiuser interference is greater than the threshold, in which the second signal detection operation detects multiple layers of spatial data in the received signal.. ... Realtek Semiconductor Corporation

Memory device and test method of the same

A memory test method is provided that includes the steps outlined below. The memory controller performs data-writing and data-reading on a memory module. ... Realtek Semiconductor Corporation

Iris image capturing device, iris image recognition device and method thereof

An iris image capturing device, an iris image recognition device and an iris image recognition method are provided. Multiple data sequences are captured, in which each data sequence includes an iris image. ... Realtek Semiconductor Corporation

Electrostatic discharge protection circuit

The present invention discloses an electrostatic discharge (esd) protection circuit, including: a first terminal configured to receive a first voltage; a second terminal configured to receive a second voltage; a detection voltage generating circuit configured to provide a detection voltage according to the first voltage and the second voltage; a warning circuit configured to generate a control signal according to the detection voltage, in which the control signal indicates a normal condition when the detection voltage satisfies predetermined voltage setting, and the control signal indicates an abnormal condition when the detection voltage does not satisfy the predetermined voltage setting; and a protected circuit configured to carry out a self-protection operation when receiving the control signal indicating the abnormal condition.. . ... Realtek Semiconductor Corporation

Rf transceiver and rf transmitter of the same

An rf transmitter with a power combiner and a differential amplifier is provided. The power combiner converts a differential output signal to a single-end output signal and transmits the single-end output signal to the antenna. ... Realtek Semiconductor Corporation

Electronic apparatus and control method thereof

An electronic device includes a controller, a user interface and a sensor. The user interface and the sensor are coupled to the controller. ... Realtek Semiconductor Corporation

07/19/18 / #20180206022

Noise cancellation device and noise cancellation method

A noise cancellation device includes an anti-noise filter circuit, an output circuit, and a detection circuit. The anti-noise filter circuit provides a corresponding one of transfer functions to process a digital signal, in order to generate a noise cancellation signal, in which the transfer functions are different from each other. ... Realtek Semiconductor Corporation

07/19/18 / #20180205489

Device and method for determining modulation and coding scheme based on channel capacity

A receiving device comprises a channel estimation unit, for generating a plurality of channel estimates according to a plurality of reference signals; an eigenvalue computation unit, coupled to the channel estimation unit, for generating at least one eigenvalue corresponding to the plurality of channel estimates according to the plurality of channel estimates; a channel compensation unit, coupled to the eigenvalue computation unit, for generating a correlation compensation value for compensating the plurality of channels according to the at least one eigenvalue; a channel capacity computation unit, coupled to the eigenvalue computation unit and the channel compensation unit, for generating a channel capacity according to the at least one eigenvalue and the correlation compensation value; and a selection unit, coupled to the channel capacity computation unit, for determining a modulation and coding scheme (mcs) according to the channel capacity.. . ... Realtek Semiconductor Corporation

07/19/18 / #20180205389

Pipelined analog-to-digital converter and operating method thereof

A pipelined analog-to-digital converter (adc) and an operating method are provided. The pipelined adc includes a multiplying digital-to-analog converter (mdac) and a sub-adc. ... Realtek Semiconductor Corporation

07/19/18 / #20180205359

Impedance matching circuit and integrated circuit applying the impedance matching circuit

An impedance matching circuit includes a variable impedance circuit, a reference voltage generating circuit and a control circuit. The variable impedance circuit is configured for coupling to a load having an impedance and has a variable impedance; the reference voltage generating circuit coupled to the variable impedance circuit is configured to receive an input voltage of the variable impedance circuit to generate a reference voltage; and the control circuit coupled to the variable impedance circuit and configured to generate a control signal according to the reference voltage and an output voltage of the variable impedance circuit to control the variable impedance to make the variable impedance match the impedance of the load.. ... Realtek Semiconductor Corporation

07/19/18 / #20180204560

Audio processing device and audio processing method

An audio processing device includes a first anti-noise filter, an output circuit, and an equalizer circuit. The first anti-noise filter is configured to process a digital signal, in order to generate a noise cancellation signal. ... Realtek Semiconductor Corporation

07/19/18 / #20180203060

Sampling clock testing circuit and sampling clock testing method

A sampling clock testing circuit includes a clock circuit, a processing circuit and a phase determining circuit. The clock circuit generates a clock signal and switches phases of the clock signal according to a horizontal synchronous signal. ... Realtek Semiconductor Corporation

07/12/18 / #20180196458

Operating voltage switching device

An operating voltage switching device includes a first current mirror circuit generating a corresponding sensing current according to an input current; a comparator comparing a reference voltage with a voltage at a node of the first current mirror circuit to generate a comparison signal; a first power domain providing a first output current to an internal circuit according to the sensing current; a second power domain providing a second output current to the internal circuit according to the sensing current; and a power domain selecting circuit, which is coupled to the comparator, the first power domain and the second power domain, and selects to enable the first power domain or the second power domain according to the comparison signal; wherein the sensing current is not greater than the input current.. . ... Realtek Semiconductor Corporation

07/05/18 / #20180192220

Headphone amplifier circuit for headphone driver, operation method thereof, and usb interfaced headphone device using the same

Provided herein are a headphone amplifier circuit for a headphone driver, an operation method thereof, and a universal serial bus (usb) interfaced headphone device using the same. The output stage of the headphone amplifier circuit is improved to have a differential output structure so as to effectively solve the crosstalk issue and increase the isolation between the left and the right channels such that the audio content presents a spatial perception and a distance perception more specifically.. ... Realtek Semiconductor Corporation

07/05/18 / #20180191307

Charge-steering amplifier circuit and control method thereof

This disclosure provides a charging-steering amplifier circuit and the control method thereof. The charging-steering amplifier circuit includes a charging-steering differential amplifier and a sample and hold circuit. ... Realtek Semiconductor Corporation

07/05/18 / #20180188795

Integrated circuit and operation method of the same

A display controller disposed in a display device that includes a flash memory and an integrated circuit is provided. The flash memory stores display device information of the display device. ... Realtek Semiconductor Corporation

06/28/18 / #20180184469

Method for wirelessly connecting to an internet

A method for wirelessly connecting to an internet, applied for establishing a wireless connection between a mobile device and a plurality of wireless networking devices, the method including: the mobile device searching for the plurality of wireless networking devices via a wireless communication; the mobile device wirelessly connecting with a main controlling device which is one of the plurality of wireless networking devices; the mobile device providing a connection information to the main controlling device for connecting to a base station; and the main controlling device broadcasting the connection information to the other wireless networking devices of the plurality of wireless networking devices; and the main controlling device and the other wireless networking devices of the plurality of wireless networking devices connecting to the base station according to the connection information.. . ... Realtek Semiconductor Corporation

06/28/18 / #20180183590

Electronic component of electronic device, method of starting electronic device and encryption method

An electronic component of an electronic device, a method of starting an electronic device, and an encryption method. The electronic device includes a key storage unit that stores a first key, a key protection circuit that controls access of the key storage unit, and a storage unit that stores a second key and encrypted booting instructions. ... Realtek Semiconductor Corporation

06/28/18 / #20180181477

Integrated circuit test method

The present invention discloses an ic test method including the following steps: generating n test patterns; testing each of m chip(s) according to the n test patterns so as to generate n×m records of quiescent dc current (iddq) data; generating n reference values according to the n×m records, in which each of the n reference values is generated according to m record(s) of the n×m records, and the m record(s) and the reference value generated thereupon are related to the same one of the n test patterns; obtaining a reference order of the n test patterns according to the n reference values and a sorting rule; reordering the n×m records by the reference order so as to obtain reordered n×m records; generating an iddq range according to the reordered n×m records; and determining whether any of the m chip(s) is defective based on the iddq range.. . ... Realtek Semiconductor Corporation

06/21/18 / #20180175900

Auxiliary channel transceiving circuit of displayport interface

An auxiliary channel transceiving circuit includes: a first node and a second node; a first voltage-dividing circuit for generating a first received signal according to a signal from the first node; a second voltage-dividing circuit for generating a second received signal according to a signal from the second node; a first receiver amplifying circuit for amplifying the first received signal to generate a first amplified signal; a second receiver amplifying circuit for amplifying the second received signal to generate a second amplified signal; a comparison circuit for comparing the first amplified signal with the second amplified signal to generate a received signal; a first transmitter amplifying circuit for generating a first output signal according to a transmitting signal; and a second transmitter amplifying circuit for generating a second output signal according to the transmitting signal. The auxiliary channel transceiving circuit is not required to cooperate with traditional capacitors.. ... Realtek Semiconductor Corporation

06/14/18 / #20180167624

Flc-based image compression method and device

A fixed length code (flc)-based image compression method and a device thereof. The method is utilized to compress a block containing plural pixels and includes the following steps: determining a first representative pixel, a second representative pixel and a third representative pixel from the pixels according to pixel values of the pixels, the three representative pixels being noncollinear in a color space to which the pixels correspond; generating plural first interpolated pixels by interpolation according to the first representative pixel and the third representative pixel; generating plural second interpolated pixels by interpolation according to the second representative pixel and the third representative pixel; and generating an index value for each pixel according to the three representative pixels, the first interpolated pixels and the second interpolated pixels.. ... Realtek Semiconductor Corporation

06/14/18 / #20180166109

Memory control device and memory control method

A memory control device, which includes a signal generating circuit, a data writing circuit and a repeating circuit. The repeating circuit is coupled to the data writing circuit. ... Realtek Semiconductor Corporation

06/07/18 / #20180160368

Network driving circuit and method of driving network device

A method of driving a network device for outputting signals to a physical network transmission medium. The network device includes a dac circuit that comprises a plurality of digital-to-analog conversion units. ... Realtek Semiconductor Corporation

06/07/18 / #20180159550

Sigma delta modulator and signal conversion method thereof

A sigma delta modulator includes a sigma delta modulating loop and a plurality of adjusting loops. The sigma delta modulating loop processes an input signal and an adjustment signal based on a first clock signal, so as to generate a quantized output signal. ... Realtek Semiconductor Corporation

05/31/18 / #20180152156

Operational amplifier and differential amplifying circuit thereof

An operational amplifier and a differential amplifying circuit thereof. The differential amplifying circuit receives a differential input signal and outputs a differential output signal. ... Realtek Semiconductor Corporation

05/31/18 / #20180152152

Power amplifier

The present invention discloses a power amplifier capable of adaptively operating in one of an energy efficient mode and a high output power mode. An embodiment of the power amplifier includes a first transistor, a second transistor, a first bias element, a second bias element, a third bias element and a plurality of switches. ... Realtek Semiconductor Corporation

05/31/18 / #20180151290

Integrated inductor and method for manufacturing the same

An integrated inductor is disclosed herein. The integrated inductor includes a substrate, an insulation layer, and an inductor. ... Realtek Semiconductor Corporation

05/31/18 / #20180151232

Memory control circuit and method thereof

This invention discloses a memory control circuit and a method thereof. The memory control method includes the steps of: transmitting a first clock to a serial peripheral interface (spi) nor flash memory; transmitting a read instruction to the spi nor flash memory; waiting for a read waiting time period, which is associated with a specification of the spi nor flash memory and a cycle of the first clock; waiting for a delay time period, which is associated with a delay setting value and a cycle of a second clock different from the first clock; receiving read data returned from the spi nor flash memory; and adjusting the delay time period according to whether the read data are correct or not. ... Realtek Semiconductor Corporation

05/24/18 / #20180144620

Infrared learning device

An infrared (ir) learning device is disclosed. A hardware device of the ir learning device amplifies, shapes, and samples an ir signal to acquire a better digital signal related to the ir signal. ... Realtek Semiconductor Corporation

05/24/18 / #20180143225

Detection circuit for power over ethernet and detection current generation method thereof

A detection circuit for power over ethernet (poe) and a detection current generation method thereof. The detection circuit for poe is installed in power sourcing equipment (pse), and generates a first detection current in a first detection mode to detect a power device (pd) of a first type and generates a second detection current in a second detection mode to detect a pd of a second type. ... Realtek Semiconductor Corporation

05/17/18 / #20180138895

Resistance calibration circuit and device

The present invention discloses a resistance calibration circuit. An embodiment of the resistance calibration circuit includes: a reference voltage outputting circuit operable to output a reference voltage; an adjustable internal resistor including at least one positive temperature coefficient resistor and at least one negative temperature coefficient resistor; a reference current generating circuit operable to generate an internal resistor reference current according to the reference voltage and the internal resistor and generate an external resistor reference current according to the reference voltage and an external resistor; and a comparison and control circuit operable generate a comparison result according to the internal and external resistor reference currents, and adjust the internal resistor according to the comparison result till the comparison result indicates that the difference between the internal and external resistor reference currents is less than a predetermined threshold or unable to be further reduced.. ... Realtek Semiconductor Corporation

05/17/18 / #20180137897

Intermediate circuit for memory card access

The present invention discloses an intermediate circuit including: a detection circuit generating a detection result indicating a memory card signal conforming to one of a first and a second voltage specifications which specify a higher first operation voltage and a lower second operation voltage respectively; a control circuit generating a conversion control signal and a selection control signal according to the detection result; a conversion circuit converting the memory card signal into a card-to-system conversion signal conforming to the second voltage specification according to the conversion control signal when the memory card signal conforms to the first voltage specification; and a selection circuit outputting the card-to-system conversion signal according to the selection control signal when the memory card signal conforms to the first voltage specification, and outputting the memory card signal according to the selection control signal when the memory card signal conforms to the second voltage specification.. . ... Realtek Semiconductor Corporation

05/17/18 / #20180136879

Intermidiate circuit for memory card access

The present invention discloses an intermediate circuit including: a detection circuit detecting a memory card signal to generate a detection result indicating the memory card signal conforming to one of a first and a second signal types which are dedicated to different physical transmission interfaces respectively; a control circuit generating a conversion control signal and a selection control signal according to the detection result; a conversion circuit converting the memory card signal into a card-to-system conversion signal of the second signal type according to the conversion control signal when the memory card signal conforms to the first signal type; and a selection circuit outputting the card-to-system conversion signal according to the selection control signal when the memory card signal conforms to the first signal type, and outputting the memory card signal according to the selection control signal when the memory card signal conforms to the second signal type.. . ... Realtek Semiconductor Corporation

05/17/18 / #20180136681

Voltage reference buffer circuit

The present invention discloses a voltage reference buffer circuit. An embodiment of the voltage reference buffer circuit includes: a first bias generator configured to generate a first bias voltage; a second bias generator configured to generate a second bias voltage different from the first bias voltage; a first driving component coupled to a high voltage terminal, the first bias generator and a reference voltage output terminal, and configured to control a reference voltage at the reference voltage output terminal according to the first bias voltage; and a second driving component coupled to the reference voltage output terminal, the second bias generator and a low voltage terminal, and configured to control a current between the reference voltage output terminal and the second driving component according to the second bias voltage.. ... Realtek Semiconductor Corporation

05/10/18 / #20180131353

Common-mode clamping circuit and method thereof

An apparatus includes a first ac (alternating current) coupling circuit configured to receive a first end of a differential signal and output a first coupled signal in accordance with a bias voltage; a second ac coupling circuit configured to receive a second end of the differential signal and output a second coupled signal in accordance with the bias voltage; a first complementary joint-control cascode pair configured to shunt the first end of the differential signal to a dc (direct current) node in accordance with a joint control by the first coupled signal and the second coupled signal; and a second complementary joint-control cascode pair configured to shunt the second end of the differential signal to the dc node in accordance with a joint control by the first coupled signal and the second coupled signal. A related method is also provided.. ... Realtek Semiconductor Corporation

05/10/18 / #20180129617

Memory card reading method which adjusts reader to host interface

A memory card reading method applied to an electronic device, includes: detecting a specification information of a memory card, wherein the specification information includes a transfer speed of the memory; and controlling according to the specification information a reader to host interface to operate in a first operating mode or a second operating mode for reading the memory card, wherein the first operating mode and the second operating mode correspond to different data transfer speeds.. . ... Realtek Semiconductor Corporation

05/03/18 / #20180123599

Phase adjustment circuit, control method, and measurement method

A control method, which is adapted to a phase interpolator configured to generate an output signal based on a current distribution ratio, includes following operations: selecting a first input pair and a second input pair from the phase interpolator; sequentially switching currents associated with the current distribution ratio from the first input pair to flowing through the second input pair, in order to adjust a phase of the output signal to correspond to a first phase interval; and after all of the currents flow through to the second input pair, selecting the second input pair and a third input pair form the phase interpolator, and adjusting the current distribution ratio to correspond the phase of the output signal to a second phase interval, in which the first phase interval and the second phase interval are continuous.. . ... Realtek Semiconductor Corporation

05/03/18 / #20180122561

Transformer

A transformer includes an input terminal, an output terminal, a first wire, and a second wire. The input and output terminals are disposed at two sides of the transformer with respect to a middle point of the transformer. ... Realtek Semiconductor Corporation

05/03/18 / #20180120375

Testing integrated circuit, testing method and electronic device

An integrated circuit installed in an electronic device having an external connector, including: a monitor circuit and a control circuit. The monitor circuit coupled to the external connector is configured to monitor a code generated from a user's input and inputted via the external connector, the monitor circuit generating a control signal according to the code; and the control circuit coupled to the monitor circuit and at least a circuit block of the electronic device is configured to control the external connector to be coupled to the circuit block according to the control signal; wherein a testing operation is executed in response to a testing signal inputted to the control circuit via the external connector for checking and modifying a status of the circuit block of the electronic device after the external connector is coupled to the control circuit.. ... Realtek Semiconductor Corporation

04/19/18 / #20180110008

Radio-frequency module and wireless device

A wireless device includes a radio-frequency module, a modem module, and a control unit. The radio-frequency module and the modem module operate either in a first operation mode or in a second operation mode. ... Realtek Semiconductor Corporation

04/19/18 / #20180109281

Dual-mode signal transceiver and transceiving method thereof

A dual-mode signal transceiver includes a first transmitter circuit, a second transmitter circuit, and a receiver circuit. The first transmitter circuit is configured to operate in a first mode and configured to process a first input signal according to a first oscillating signal, in order to output a first output signal. ... Realtek Semiconductor Corporation

04/19/18 / #20180109247

Phase interpolator and clock generating method

A phase interpolator includes a current generating circuit, a current controlling circuit and a signal generating circuit, wherein the current generating circuit is arranged to generate a current; and the current controlling circuit is arranged to generate a control signal to the current generating circuit to control a current value of the current. The signal generating circuit includes a capacitor, wherein the signal generating circuit generates a phase interpolation signal by using the capacitor to receive the current, wherein a phase of the phase interpolation signal is varied according to the current.. ... Realtek Semiconductor Corporation

04/19/18 / #20180109232

Amplifier device

An amplifier device includes an amplifier circuit, a feedback circuit, and a filter circuit. The amplifier circuit is configured to receive an input signal and a filtered signal, and to output a first output signal and a second output signal at a first output terminal and a second output terminal respectively. ... Realtek Semiconductor Corporation

04/05/18 / #20180097355

Cross-domain esd protection circuit

An esd protection circuit includes: a first current path switch arranged in a parallel connection with a first circuit and turned off when a first node voltage is at a logic high level; a first node for providing the first node voltage; a resister element coupled between a first power terminal and the first node; a mos capacitor coupled between the first node and a first fixed-voltage terminal; a second current path switch arranged in a parallel connection with a second circuit and controlled by a second node voltage; a switch control circuit for providing the second node voltage; and a node voltage control circuit for controlling the first node voltage according to the second node voltage to ensure the first current path switch is turned off when the first power terminal supplies power to the first circuit while the second power terminal supplies power to the second circuit.. . ... Realtek Semiconductor Corporation

04/05/18 / #20180096983

Cross-domain esd protection circuit

An esd protection circuit includes: a first current path switch arranged in a parallel connection with a first circuit and turned off when a first node voltage is at a logic low level; a first node for providing the first node voltage; a resister element coupled between a first power terminal and the first node; a mos capacitor coupled between the first node and a first fixed-voltage terminal; a second current path switch arranged in a parallel connection with a second circuit and controlled by a second node voltage; a switch control circuit for providing the second node voltage; and a node voltage control circuit for controlling the first node voltage according to the second node voltage to ensure the first current path switch is turned off when the first power terminal supplies power to the first circuit while the second power terminal supplies power to the second circuit.. . ... Realtek Semiconductor Corporation

03/22/18 / #20180082947

Structure of integrated inductor

This invention discloses a structure of an integrated inductor, comprising: an outer metal segment which comprises a first metal sub-segment and a second metal sub-segment; an inner metal segment which is arranged inside an area surrounded by the outer metal segment and comprises a third metal sub-segment and a fourth metal sub-segment; and at least a connecting structure for connecting the outer metal segment and the inner metal segment. The first metal sub-segment corresponds to the third metal sub-segment, and the first metal sub-segment and the third metal sub-segment belong to different metal layers in a semiconductor structure. ... Realtek Semiconductor Corporation

03/15/18 / #20180074125

Circuit and method for differential signal skew detection

The present invention discloses a differential signal skew detecting circuit configured to detect a skew of a differential signal. An embodiment of the circuit includes: a common mode voltage outputting circuit configured to output a common mode reference voltage and a common mode skew voltage; and a skew detecting circuit configured to inspect the common mode reference voltage and the common mode skew voltage according to a clock signal so as to output a skew detection value, in which when the skew detecting circuit detects the skew of the differential signal, the skew detection value is a first value, and when the skew detecting circuit detects no skew of the differential signal, the skew detection value is a second value.. ... Realtek Semiconductor Corporation

03/01/18 / #20180062377

Power supply device, detection circuit and power supply method thereof

A power supply device includes a power supply circuit, a detection circuit, and a control circuit. The power supply circuit is configured to output a supply voltage. ... Realtek Semiconductor Corporation

03/01/18 / #20180059696

Voltage regulator with noise cancellation function

Disclosed is a voltage regulator. The voltage regulator includes a reference voltage circuit, a noise cancellation circuit, an error amplifier, a pass transistor and a voltage divider. ... Realtek Semiconductor Corporation

02/22/18 / #20180054230

Signal transceiving circuit and receiving circuit control method

A transceiving circuit, which comprises: a transmitting circuit, configured to transmit a test signal; a receiving circuit, comprising a mixer configured to receive a plurality of predetermined dc bias voltage groups, wherein the receiving circuit generates a plurality of output signals according to the test signal while the mixer operates at the predetermined dc bias voltage groups; a frequency domain analyzing circuit, configured to transform the output signals to a plurality of frequency domain signals; and a dc bias voltage generating circuit, configured to generate a function according to the frequency domain signals and the predetermined bias voltage groups, and configured to generate a first dc bias voltage group to the mixer according to the function.. . ... Realtek Semiconductor Corporation

02/22/18 / #20180054192

Phase interpolator

A phase interpolator includes differential pairs, a switching circuit, an output stage, and a correction circuit. The differential pairs generate a first signal and a second signal according to a first group of input signals and a second group of input signals. ... Realtek Semiconductor Corporation

02/22/18 / #20180052506

Voltage and frequency scaling apparatus, system on chip and voltage and frequency scaling method

A voltage and frequency scaling apparatus includes a processor, at least one sensor and a controller. The at least one sensor is electrically coupled to the processor. ... Realtek Semiconductor Corporation

02/08/18 / #20180040413

Semiconductor element

A semiconductor element includes a first spiral coil, a second spiral coil, a connecting section, a first guide segment, and a second guide segment. The first spiral coil is formed with a first end and a second end, and includes a first inner turn and a first outer turn. ... Realtek Semiconductor Corporation

02/08/18 / #20180040412

Semiconductor element

A semiconductor element includes a first coil substantially located at a first plane; a second coil substantially located at the first plane; a connecting section that connects the first coil and the second coil; a third coil substantially located at a second plane different from the first plane; and a fourth coil substantially located at the second plane. The third coil and the first coil are connected through a through structure, and the fourth coil and the second coil are connected through a through structure. ... Realtek Semiconductor Corporation

02/08/18 / #20180040411

Semiconductor element

A semiconductor element fabricated in a semiconductor structure and coupled to an application circuit through at least two connecting terminals. The semiconductor element includes a first spiral coil, a second spiral coil and a connecting portion. ... Realtek Semiconductor Corporation

02/08/18 / #20180040105

Image-filtering method and image-filtering device

An image-filtering method that includes the steps outlined below is provided. Target image values and an input image having input pixel values are retrieved. ... Realtek Semiconductor Corporation

02/01/18 / #20180032460

Usb type-c switching circuit

Disclosed is a usb type-c switching circuit configured for arranging a plurality of signals of a usb type-c connector. The usb type-c switching circuit can be used in products having displayport alternate mode, and includes a plurality of signal receivers/receivers, a plurality of series-parallel transforming circuits and a multiplexer. ... Realtek Semiconductor Corporation

01/25/18 / #20180027586

Wireless communication system and associated wireless communication method and wireless device

A wireless communication system under a contention-based protocol comprises an access point and at least one station, wherein the station is arranged for wirelessly communicating with the access point under the contention-based protocol. In the operations of the wireless communication system, the access point broadcasts a polling usage sequence to assign a time slot for the station, and the station subsequently uses the assigned time slot to transmit a data packet to the access point.. ... Realtek Semiconductor Corporation

01/04/18 / #20180006638

Differential switch circuit

A differential switch circuit includes: a first transistor having a first terminal coupled with a first input terminal, a second terminal coupled with a first output terminal, and a control terminal coupled with a switch signal receiving terminal; a second transistor having a first terminal coupled with a second input terminal, a second terminal coupled with a second output terminal, and a control terminal coupled with the switch signal receiving terminal; a central switch element positioned between the control terminals of the first and second transistors; and a switch element control circuit for controlling the central switch element based on a switch signal. When the switch signal turns on the first and second transistors, the switch element control circuit turns off the central switch element, and when the switch signal turns off the first and second transistors, the switch element control circuit turns on the central switch element.. ... Realtek Semiconductor Corporation

01/04/18 / #20180003763

Operation voltage testing circuit and method

An operation voltage testing circuit includes a voltage generating circuit, a current-to-voltage conversion circuit, and a processing circuit. The voltage generating circuit is configured to generate a first voltage signal according to a first current signal, such that a photoelectric conversion unit generates a second current signal corresponding to the first voltage signal. ... Realtek Semiconductor Corporation








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