Electronics and Telecommunications Research Institute

Nak-Woong Eum

Kyung-Jin Byun

Seong-Mo Park

Bon-Tae Koo

Young-Ho Kim

Seung-Hyun Cho

Young-Su Kwon

Min Sang Park

Tae-young Kang

Hee-Bum Jung

Ik-Soo Eo

Seok-bong Hyun

Kyung-Hwan Park

Byoung-Gun Choi

Byung-Jo Kim

Yun-Ho Choi

Hyun-Mi Kim

An encoding apparatus in accordance with an embodiment of the present invention includes: an encoder configured to request for storage of an original frame; a frame processing unit configured to generate an encoded frame having the original framed encoded therein; and a frame memory configured to store the encoded frame. Here, the frame processing unit is configured to generate the original frame by encoding the encoded frame stored in the frame memory according to a request of the encoder, and the encoder is configured to perform encoding according to the original frame.

Apparatus and method for encoding

A motion estimation apparatus and method are disclosed. The motion estimation apparatus includes processing element (PE) array units, sub-SAD calculation units, motion vector calculation units, and a minimum motion vector selector. The PE array units each perform parallel processing for each of the three types of coding units. The sub-SAD calculation units calculate respective SAD values for the three types of coding units. The motion vector calculation units calculate respective motion vectors for the three types of coding units. The minimum motion vector selector selects a minimum motion vector from among the motion vectors.

Apparatus and method for motion estimation for variable block sizes

An apparatus and method for skipping fractional motion estimation (FME) in high efficiency video coding (HEVC) are disclosed. The apparatus includes a current sum of absolute differences (SAD) acquisition unit, a redundancy determination unit, and a motion estimation skip unit. The SAD acquisition unit acquires the SAD from an integer motion estimation (IME) unit when the IME unit performs IME on a coding tree block (CTB). The redundancy determination unit determines whether or not the CTB is an estimated redundant block using the current SAD. The motion estimation skip unit provides an FME unit with an FME skip signal of the CTB depending on whether or the CTB is an estimated redundant block.

Apparatus and method for skipping fractional motion estimation in high efficiency video coding

Provided are an apparatus for controlling power management of a DSP (Digital Signal Processor) and a power management system and method using the same. The power management system includes a command decoding device for decoding a program into which a PSM (Power Saving Mode) command and a general command are inserted and transmitting module information required for execution of a corresponding command to a power management control apparatus at the time of decoding the corresponding command; a pipeline control device for blocking and restarting the transmission of data through a pipeline upon receipt of a pipeline control signal (pipeline stall) from the power management control device; and the power management control apparatus for controlling power in respective modules by setting/resetting corresponding bits of a PSM status register and a PSM flag register in accordance with the PSM command and the general command decoded in the command decoding device.

Apparatus for controlling power management of digital signal processor and power management system and method using the same

Provided are an embedded system and a method for relocating memory pages therefor. The embedded system includes a processor, a data relocating circuit for receiving a logical address from the processor, mapping the received logical address to a physical address to locate a valid page in a predetermined bank, and generating a bank power control signal according to whether or not a corresponding memory bank includes valid pages, and a memory including a plurality of memory banks addressed by a physical address outputted from the data relocating circuit and a plurality of switching means for selectively supplying a power voltage to each of memory banks in response to the bank power control signal.

Embedded system and page relocation method therefor

A waveform interpolation speech coding apparatus and method for reducing complexity thereof are disclosed. The waveform interpolation speech coding apparatus includes: a waveform interpolation encoding unit for receiving a speech signal, calculating parameters for a waveform interpolation from the received speech signal, and quantizing the calculating parameters; and a realignment parameter calculating unit for restoring a characteristic waveform (CW) using the quantized parameter, calculating a realignment parameter that maximizes a cross-correlation among consecutive CWs for the restored CW.

Waveform interpolation speech coding apparatus and method for reducing complexity thereof

A low power consuming mixed mode power amplifier which includes: a low output amplifier circuit generating a power amplified result having high efficiency in a low output mode that is most frequently used; a high output amplifier circuit generating an amplified result having high linearity in a high output mode of a region consuming the most power; and an amplifier controller selectively activating the low and high output amplifier circuits according to a power level of an input signal. The high and low output amplifier circuits have a predetermined gain difference.

Growing community of inventors

Daejeon, South Korea

Nak-Woong Eum