Electronics and Telecommunications Research Institute

Korea Telecommunication Authority

Telecommunications Research

Do Nyon Kim

Jin Woong Kim

Jin Suk Kwak

Dong Hyun Kwon

Kang Whan Lee

Ki Chul Kim

Yo Sung Ho

Chi T Ahn

A block-matching motion estimation apparatus in the form of linear systolic array architecture. The apparatus includes a selecting unit for inputting data of a reference block and other data to delay the data of the reference data and selectively outputting the data; a delaying unit having P-1 delay elements where the first delay element delays and outputs an output of the selecting unit and the second to (P-1)-th delay elements delay and output outputs of just front delay element, respectively, the P-1 delay element being connected in serial; and a mean absolute difference operating unit for simultaneously inputting data of a search area to each pipe by connecting in parallel P pipes where operation elements are disposed in a linear systolic array architecture, and then calculating a value of mean absolute difference in each of the search areas by inputting outputs of the selecting unit, the first delay element, and the (P-1)-th delay element to the first pipe, the second pipe, and the (P-th) pipe, respectively.

Block-matching motion estimation apparatus under use of linear systolic

The present invention relates to an apparatus for simultaneously estimating a set of frame-to-frame motions between two frames and a set of field-to-field motions between two fields. The apparatus for simultaneously estimating both a set of frame-to-frame motions and a set of field-to-field motions, comprises: a first delay unit 1 for delaying a set of search area data of a first frame of the frames; a selection unit 3 for selecting a set of current reference data of a second frame of the frames or a set of previous reference data of the second frame; a motion estimation unit 4 for calculating a mean absolute difference between an output of a selection unit 3 and an output of the first delay unit 1; a second delay unit 2 for delaying a feedback reference data from the motion estimation unit 4; and a comparator 5 for receiving an output from the a motion estimation unit 4 and employing a mean absolute difference for each of the fields to produce a mean absolute difference, a motion vector and a prediction direction for each of the fields, and to produce a mean absolute difference and a motion vector for each of sets of the reference data contained in the second frame.

Apparatus for estimating frame-to-frame and field-to-field motions

An elementary stream packetizing unit for an MPEG-2 system comprising a system time clock generator for sampling an external system clock signal at a resolution of a predetermined frequency, first and second time stamp generators for latching a sampled value from the system time clock generator to generate a first presentation time stamp and a decoding time stamp for the process of video elementary stream data and a second presentation time stamp for the process of audio elementary stream data, respectively, first and second stream interface circuits for inputting the video and audio elementary stream data and generating a group-of-picture detect signal and an audio frame synchronous word detection start signal, respectively, first and second buffers for storing the video and audio elementary stream data and generating first and second header generation start signals, respectively, first and second header generators for generating first and second headers, respectively, a first multiplexer for multiplexing the first header from the first header generator and the video elementary stream data to generate a packetized video elementary stream, and a second multiplexer for multiplexing the second header from the second header generator and the audio elementary stream data to generate a packetized audio elementary stream.

Elementary stream packetizing unit for MPEG-2 system

Growing community of inventors

Daejeon, South Korea

Do Nyon Kim