Samsung Electronics Co., Ltd.

Joong-suk Park

Chang-Yeul Kwon

Jeong-Ho Lee

Jae-Moon Jo

Se-young Shin

Seung-seop Shim

Ji-Sung Oh

Chil-youl Yang

Seong-Wook Lee

Yeon-woo Lee

Guoping Fan

Dong-Hwi Roh

Ho-seok Lee

Dae-yeon Kim

Moon-young Choi

Weon-kyo Jung

Hee-seung Kim

Jung-Won Kwak

Sung-wook Cha

A method of and an apparatus to improve stability and efficiency during data transmission performed over a wireless network includes transmitting a first data frame containing a plurality of data units to a receiving device, receiving from the receiving device a receipt of confirmation for each data unit received by the receiving device, and transmitting a second data frame containing at least one of the plurality of data units that have not been transmitted or received, according to the receipt of confirmation for each data unit received by the receiving device.

Method and apparatus to transmit and/or receive data via wireless network and wireless device

Apparatuses and methods are provided for transmitting and receiving uncompressed audio or video (AV) data by applying a different coding rate to each bit or each group of bits included in the uncompressed AV data according to significance of each bit or each group of bits. The apparatus for transmitting the uncompressed AV data includes a grouping unit which classifies bits of each pixel included in the uncompressed AV data into at least two groups of bits according to a significance of the bits; an encoding unit which performs error correction encoding on each of the at least two groups using a different coding rate; and a radio frequency (RF) processing unit which transmits the encoded, uncompressed AV data, which includes the pixels on which the error-correction encoding was performed, using a communication channel.

Apparatuses and methods for transmitting and receiving uncompressed AV data

A method and apparatus for reducing the power consumption of a wireless LAN device that operates in a wireless network are disclosed. The method for reducing the power consumption includes receiving a high throughput (HT) frame; judging whether the received HT frame is decodable; and if the received HT frame is not decodable, switching the wireless LAN device into a standby mode, and maintaining the device in the standby mode for a duration of the HT frame.

Method and apparatus for reducing power consumption of wireless LAN device

A transceiver device capable of calibration, and a calibration method used by the transceiver device. The transceiver device includes a reference transceiver, a plurality of remaining transceivers, and a plurality of transmission calibration paths connecting the remaining transceivers to the reference transceiver for transmission calibration of the remaining transceivers. An envelope detector included in the reference transceiver is shared with the remaining transceivers. When implementing a multiple input multiple output (MIMO) transceiver in a single chip, the chip size and manufacturing cost of the MIMO transceiver device can be substantially reduced.

Transceiver device capable of calibration and calibration method used by the same

A receiver implemented without using a phase locked loop frequency synthesizer and a receiving method of a receiver implemented without using a phase locked loop frequency synthesizer are provided. The receiver includes a radio frequency (RF) receiving unit; a band-selecting unit; an RF amplifier; a local oscillation (LO) signal generator; a mixer; an IF amplifier; an analog to digital (A/D) converter; and a channel-selecting unit. The method includes passing a frequency band of a radio frequency (RF) signal received by an RF receiving unit; amplifying the passed RF signal; generating a local oscillation (LO) signal having a fixed frequency; mixing the LO signal with the amplified RF signal to lower the frequency of the amplified RF signal; outputting an intermediate frequency (IF) signal; amplifying the IF signal; converting the amplified IF signal into a digital signal; and selectively passing frequencies of the digital signal corresponding to a specific channel.

Receiver without phase locked loop frequency synthesizer and receiving method using the same

Growing community of inventors

Seongnam-si, South Korea

Joong-suk Park