1
Robert D Widergren, Wen Hsiung Chen, Stanley C Fralick, Andrew G Tescher: Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback. Compression Labs, David B Harrison, November 24, 1981: US04302775 (420 worldwide citation)

A digital video compression system and its methods for compressing digitalized video signals in real time at rates up to NTSC color broadcast rates are disclosed. The system compressor receives digitalized video frames divided into subframes, performs in a single pass a spatial domain to transform d ...


2
R Padmanabha Rao: Method for configuring a statistical multiplexer to dynamically allocate communication channel bandwidth. Compression Labs, Skjerven Morrill MacPherson Franklin & Friel, April 9, 1996: US05506844 (299 worldwide citation)

A statistical multiplexer selectively passes packets of encoded data from a plurality of encoders to a communication channel so as to maximize the quality of the encoded data. The statistical multiplexer determines what fraction of the communication channel capacity should be allocated to an applica ...


3
Robert D Widergren, Wen Hsiung Chen, Stanley C Fralick, Andrew G Tescher: Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback. Compression Labs, David B Harrison, July 19, 1983: US04394774 (275 worldwide citation)

A digital video compression and expansion system and its methods for compressing and expanding digitalized video signals in real time at rates up to NTSC color broadcast rates are disclosed. The system compressor receives digitalized video frames divided into subframes, performs in a single pass a s ...


4
Chen Wen Hsiung, Elliott James Parker, Newell Robert Edwin George, Nichols Ralph Emerson, Rackett Albert Edwards: A combined intraframe and interframe transform coding method.. Compression Labs, October 31, 1984: EP0123456-A2 (227 worldwide citation)

An apparatus and method for signal processing employing intraframe and interframe variable prediction transform coding. Images are represented by sequential frames of two-dimensional arrays of digital signals. The digital signals are transformed to form transform coefficients for each frame. Predict ...


5
Wen hsiung Chen, Daniel J Klenke: Coding system for reducing redundancy. Compression Labs, Fliesler Dubb Meyer & Lovejoy, October 6, 1987: US04698672 (164 worldwide citation)

The present invention relates to methods and apparatus for processing signals to remove redundant information thereby making the signals more suitable for transfer through a limited-bandwidth medium. The present invention specifically relates to methods and apparatus useful in video compression syst ...


6
Andrew G Tescher: Video bandwidth reduction system employing interframe block differencing and transform domain coding. Compression Labs, Fliesler Dubb Meyer & Lovejoy, September 10, 1985: US04541012 (112 worldwide citation)

Video type information signals are compressed for transmission and reproduction by comparing corresponding blocks of time domain information signals from successive fields, converting a block of the time domain information signals to a transform domain signal represented by discrete cosine transform ...


7
William K Pratt, Ronald S Bader, Wen Hsiung Chen, Lyle V Rennick, Robert H Wallis: Dual mode facsimile coding system and method. Compression Labs, Flehr Hohbach Test Albritton & Herbert, October 18, 1983: US04410916 (104 worldwide citation)

A dual mode facsimile data compression technique which possesses the advantage of symbol recognition and extended run-length coding methods. In operation, a symbol blocking operator isolates digital raster data representing valid alphanumeric characters and document symbols. The first symbol encoung ...


8
Wen hsiung Chen, James P Elliott, Robert E G Newell, Ralph E Nichols, Albert E Rackett: Combined intraframe and interframe transform coding system. Compression Labs, Fliesler Dubb Meyer & Lovejoy, November 3, 1987: US04704628 (96 worldwide citation)

An apparatus and method for signal processing employing intraframe and interframe variable prediction transform coding. Images are represented by sequential frames of two-dimensional arrays of digital signals. The digital signals are transformed to form transform coefficients for each frame. Predict ...


9
Robert D Widergren, Wen Hsiung Chen, Stanley C Fralick, Andrew G Tescher: Discrete cosine transformer. Compression Labs, David B Harrison, May 24, 1983: US04385363 (86 worldwide citation)

An improved method and apparatus for calculating discrete cosine transform coefficients from a plurality of digitalized data is disclosed. The pipelined processor utilizes two basic types of circuits arranged in five computational stages. Shuffle and add circuits operate upon prearranged data compon ...


10
Smita Gupta, Yi Tong Tse: Transform artifact reduction process. Compression Labs, Skjerven Morrill MacPherson Franklin & Friel, December 22, 1998: US05852475 (81 worldwide citation)

A post-processor for a decoded video sequence includes a digital noise reduction unit and an artifact reduction unit which significantly reduce blocking artifacts and mosquito noise in a video image. The post-processor uses both temporal and edge characteristics of the video image to enhance the dis ...