US Patent No: 4,517,596

Number of patents in Portfolio can not be more than 2000

System comprising a preliminary processing device controlled in accordance with an amount of information stored in a buffer

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Abstract

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In an encoding system comprising a buffer circuit for successively storing variable length codes and for producing the stored codes at a predetermined rate as transmission codes, a controller produces a control signal which stepwise specifies a variable amount of the stored codes. Responsive to the control signal, a preliminary processing circuit preliminarily processes the digital video signals into preliminarily processed signals which are dependent on the amounts and which are predictively encoded in accordance with an encoding rule by a non-recursive predictive encoder into predictive error signals with information of the preliminarily processed signals preserved. For use in the buffer circuit, a variable length encoder controlled by the control signal further encodes the predictive error signals into the variable length codes of code lengths related to the amounts. The processing circuit may comprise at least one of a quantizer, a thinning circuit, and a band compression circuit. A decoding system decodes the transmission codes in accordance with a decoding rule reversible to the encoding rule to produce reproductions of the preliminarily processed signals. A combination of the encoding and the decoding systems is connected in cascade to at least one of an additional combination of the encoding and the decoding systems to repeatedly edit and/or dub video signals in a digital form. The encoding system may additionally comprise an additional predictive encoder operable, when the amount is large to compensate for that visibly perceptible degradation of picture qualities which would otherwise result from a reduction in the numbers of bits representative of the predictive error signals produced by the non-recursive predictive encoder.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NIPPON ELECTRIC CO., LTD.TOKYO733

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Suzuki, Norio Mito, JP 301 1754

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Bell Telephone Laboratories, Incorporated (1)
4,255,763 Technique for reducing transmission error propagation in an adaptively predicted DPCM video encoder 19 1979

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY (3)
4,985,766 Video coder 122 1989
5,371,811 Data encoding 22 1992
RE34824 Video coder 13 1993
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (3)
5,144,426 Motion compensated prediction interframe coding system 111 1990
5,150,208 Encoding apparatus 43 1991
RE37091 Motion compensated prediction interframe coding system 4 1994
 
AT&T Bell Laboratories (2)
5,007,102 Data compression using block list transform 21 1989
5,063,444 High definition television arrangement with signal selections adapted to the available transmission capacity 23 1990
 
LUCENT TECHNOLOGIES INC. (2)
5,028,999 Source encoder for video pictures having a quantizer whose stepsize is controlled in an incremental manner 9 1988
5,907,363 Method for controlling a compressed data buffer 11 1996
 
SIEMENS AKTIENGESELLSCHAFT (2)
4,569,058 Transmission system 27 1984
4,651,194 Arrangement for multiplexing luminance and chrominance code words of variable length 5 1984
 
WARNER BROS. ENTERTAINMENT INC. (2)
5,819,004 Method and system for a user to manually alter the quality of previously encoded video frames 71 1995
5,623,424 Rate-controlled digital video editing method and system which controls bit allocation of a video encoder by varying quantization levels 92 1995
 
AGERE SYSTEMS INC. (1)
6,980,592 Digital adaptive equalizer for T1/E1 long haul transceiver 12 1999
 
APPLE INC. (1)
8,564,522 Reduced-power communications within an electronic display 1 2010
 
CAMBRIDGE SILICON RADIO LIMITED (1)
8,627,187 Decoding of recursive convolutional codes by means of a decoder for non-recursive convolutional codes 0 2008
 
CANON KABUSHIKI KAISHA (1)
5,883,976 Selectively utilizing multiple encoding methods 27 1995
 
COMPUPIX TECHNOLOGY, INC., 5301 NORTH FEDERAL HWY., SCCA RATON, FL 33431 A CORP. OF FL (1)
4,665,436 Narrow bandwidth signal transmission 38 1985
 
Concept Communications, Inc. (1)
4,695,883 Digital video compression system with variable digital filter 9 1985
 
DELTA INFORMATION SYSTEMS, INC. (1)
4,729,020 System for formatting digital signals to be transmitted 59 1987
 
FUJI PHOTO FILM CO., LTD. (1)
4,656,500 Adaptive type compression method for compressing a color image by imparting predetermined variable-length codes to combinations of quantized values based upon quantized prediction error components 35 1984
 
HITACHI, LTD. (1)
4,758,899 Data compression control device 16 1985
 
KABUSHIKI KAISHA TOSHIBA (1)
5,612,900 Video encoding method and system which encodes using a rate-quantizer model 56 1995
 
KDDI CORPORATION (1)
4,802,004 Predictive coding system for TV signals 4 1987
 
KOKUSAI DENSHIN DENWA KABUSHIKI KAISHA (1)
4,639,778 Embedding quantization system for vector signals 13 1984
 
LENOVO (SINGAPORE) PTE LTD. (1)
4,870,695 Compression and de-compression of column-interlaced, row-interlaced graylevel digital images 25 1988
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
5,337,087 Video signal encoding apparatus 90 1993
 
NEC CORPORATION (1)
4,633,312 Interframe encoding system having a buffer simulator 6 1985
 
NEC Home Electronics Ltd. (1)
4,931,879 Image processing system for recording or reproducing an image signal sequence which has been encoded by employing two predictive coding methods and combining the results of those methods 101 1988
 
NIKON CORPORATION (1)
5,818,524 Digital still camera having an image data compression function 11 1996
 
PHILIPS COMMUNICATION D'ENTREPRISE (1)
5,062,125 Statistic coding arrangement for producing code words comprising a variable number of bits 3 1989
 
RACAL-DATACOM, INC. (1)
4,937,844 Modem with data compression selected constellation 83 1988
 
RCA Corporation (1)
4,706,260 DPCM system with rate-of-fill control of buffer occupancy 83 1986
 
SCIENTIFIC-ATLANTA, INC. (1)
6,188,729 Method and apparatus for effecting seamless data rate changes in a video compression system 25 1993
 
SONY CORPORATION (1)
6,157,675 Image transmission device and image transmission method 13 1998
 
TELCORDIA TECHNOLOGIES, INC. (1)
4,819,253 Method for determining PCM coding law 7 1988
 
Thomson Consumer Electronics (1)
5,036,391 Synchronization method for the transmission, of an asynchronous channel, or a series of pictures encoded by means of a variable length code, and device for the implementation of this method 35 1989
 
UNIDEN CORPORATION (1)
5,708,596 Filter circuit 2 1996
 
Workstation Technologies, Inc. (1)
5,159,449 Method and apparatus for data reduction in a video image data reduction system 61 1991