Newracom, Inc.

Lg Electronics Inc.

Avalon Technology Solutions LLC

Youngjae Jung

Yujin Noh

Jong-ee Oh

Dae Kyun Lee

Sichan Noh

Hyobin Yim

Min Seoung Kim

Jaeyoung Ryu

Jaeho Lee

Woojin Choi

Seunghyun Heo

Donghee Lee

Woojin Jeong

Sungwoong Kim

Changhoon Kim

Sangrok Lee

Hojun Nam

Donguk Lee

Gahyun Sun

Joonghee Han

Hyeongjin Park

Kanghak Han

Seokho Jang

Wooseong Kang

Taksu Moon

Disclosed are a signal processing device and an image display apparatus including the same. The signal processing device includes an amplifier to perform amplification based on an input differential signal, an output driver to output an audio output signal based on an output signal from the amplifier, a reference voltage output device to output a reference voltage in response to power ON, a pre-output driver configured to pre-compensate for an offset voltage and output a compensation signal, based on an output signal from the amplifier after the power ON, and a first switching device disposed between an output terminal of the output driver and an output terminal of the pre-output driver, wherein the output driver operates after the first switching device is turned on in response to the power ON. Accordingly, pop noise and harmonic distortion in case in which power is turned on may be reduced.

Signal processing device and image display apparatus including the same

An image display apparatus is disclosed. The image display according to an embodiment of the present disclosure includes a signal processing device including a first logic circuit to process a first voltage range of a voltage level of the input signal, a second logic circuit to process a second voltage range of the voltage level of the input signal, higher than the first voltage range, and a protection control circuit including a protection switch and a protection controller for controlling the protection switch, wherein the protection switch is turned on based on the protection controller being turned off or powered down. Accordingly, a breakdown phenomenon can be reduced in case of power off or power down.

Signal processing device capable of reducing breakdown phenomenon in case of power off or power down, and image display device including the same

A method for encoding a bitstream is described. The method includes receiving, by an error correction unit, the bitstream; performing, by the error correction unit, encoding on the bitstream to generate an encoded bit stream that includes the bitstream and parity bits; processing, by a constellation unit, the encoded bitstream to generate constellation points in one or more encoded streams; determining, by a low-density parity-check (LDPC) tone mapper, a distance between subcarriers in an Orthogonal Frequency Division Multiplexing (OFDM) symbol of the frame; and performing, by the LDPC tone mapper, LDPC tone mapping based on the one or more encoded streams and on the determined distance to generate a permuted stream of complex numbers, wherein the distance between subcarriers is determined to be either (1) 18 for a first resource unit size used in the frame and (2) 20 for a second resource unit size used in the frame.

Enhanced resource unit allocation in wireless local area network

A method is described for transmitting a frame in a wireless network. The method includes setting, by a wireless device, a first field of the frame according to a first characteristic of the frame; setting, by the wireless device, a second field of the frame according to a second characteristic of the frame; setting, by the wireless device, a puncturing field of the frame in response to the first field of the frame meeting a first criteria and the second field of the frame meeting a second criteria, wherein the puncturing field is associated with puncturing a set of sub-channels of a transmission bandwidth of the frame; and transmitting, by the wireless device, the frame based on the transmission bandwidth and according to the set of sub-channels.

Multiple resource unit signaling in a wireless local area network

A method is described for generating and transmitting a frame by a station. The method includes determining a bandwidth of a frame to be transmitted by the station; generating a long training field for the frame, wherein the long training field includes a set of pilot tones located at a set of subcarrier positions, wherein when the bandwidth of the frame is 10 MHz, the set of subcarrier positions include four subcarrier positions and the four subcarrier positions are set as {&#x2212;21-&#x3b1;1,&#x2212;7-&#x3b1;2,7+&#x3b1;3,21+&#x3b1;4} where &#x3b1;1, &#x3b1;2, &#x3b1;3, and &#x3b1;4 are odd values, and wherein when the bandwidth of the frame is 20 MHz, the set of subcarrier positions include six sub carrier positions, including {&#x2212;53-&#x3b2;1,&#x2212;25-&#x3b2;2,&#x2212;11-&#x3b2;3, 11+&#x3b2;4,25+&#x3b2;5,53+&#x3b2;6} where &#x3b2;1, &#x3b2;2, &#x3b2;3, &#x3b2;4, &#x3b2;5, and &#x3b2;6 are odd values.

Midamble operation in a wireless local area network

A method includes determining, by a Media Access Control (MAC) layer of a first wireless station, a total length of user data in a first Physical Layer (PHY) Protocol Data Unit (PPDU); determining, by the MAC layer, a Hybrid Automatic Repeat Request (HARQ) block size; adding a first indication to a transmission vector, wherein the first indication indicates the total length of user data in the first PPDU; adding a second indication to the transmission vector, wherein the second indication indicates the HARQ block size; passing the transmission vector to a PHY layer of the first wireless station; generating, by the PHY layer, the first PPDU based on the first indication and the second indication, wherein the first PPDU includes a first set of HARQ blocks that each have a size equal to the HARQ block size; and transmitting the first PPDU to a second wireless station.

Hybrid automatic repeat requests in a wireless local area network

A display device operation method according to an embodiment of the present invention comprises the steps of: outputting first content on a screen of the display device; receiving a screen link request for linking a first screen of the display device and a second screen of another display device connected to the display device; and controlling the display device and another display device such that the first content is output on a merged screen in which the first screen and the second screen are merged according to the received screen link request.

Display device and operation method therefor

Growing community of inventors

Seoul, South Korea

Youngjae Jung