1
Rory D Jackson, Willi K Rackl: Data expansion apparatus. International Business Machines Corporation, Edward S Gershuny, October 18, 1977: US04054951 (101 worldwide citation)

When a data stream includes long sections of data that are repeated periodically, storage space may be saved by not including full repetitions of such sections in the storage. However, when the data is to be read from storage for utilization, the omitted repetitious sections must be inserted. This i ...


2
Marcel Manzardo: Apparatus and method for compressing data containing repetitive patterns. Siemens Information and Communication Networks, October 3, 2000: US06127953 (10 worldwide citation)

A data compression/expansion method and apparatus are provided. The data compression apparatus (70) includes a repetitive symbol detector (72), a shift register (74), a FIFO (76), a byte counter (78), and a map buffer (80). The symbol detector (72) generates an output signal indicating the presence ...


3
Toyota Honda, Masayoshi Kuroda, Shinya Imanishi, Koichi Takamoto, Yuichi Michikawa: Image data compression or expansion method and apparatus, and image transmission system and monitoring system using the method and device. Hitachi, Antonelli Terry Stout & Kraus, August 19, 2003: US06608938 (6 worldwide citation)

An image data expansion apparatus including a decoder for decoding compressed image data at a frame rate controlled to be lower in a scene where the change is small than that in a scene where the change is large; an expander for expanding the compressed image data decoded by the decoder, the input i ...


4
Renatus J Van Der Vleuten: Data compression and expansion of an N-level information signal. U S Philips Corporation, Michael E Belk, May 7, 2002: US06385588 (6 worldwide citation)

A data compression apparatus for data compressing an information signal, which is in n-level form, n being larger than 2. The data compression apparatus includes an input terminal for receiving the n-level information signal, an entropy coder, such as an arithmetic coder having an input for receivin ...


5
Mutsuhiro Omori: Data compression apparatus and method, data expansion apparatus and method, and recording medium. Sony Corporation, Fulwider Patton Lee & Utecht, December 7, 1999: US05999112 (5 worldwide citation)

In the data compression method and apparatus, difference value data each consisting of m bits that include an absolute value represented by m-1 bits and a 1-bit sign bit representing a sign are received, each of the difference value data having been obtained by calculating a difference between data ...


6
Masaaki Katsumata, Satoshi Kusakabe: Waveform data compression apparatus and waveform data expansion apparatus. Roland Kabushiki Kaisha, Lyon & Lyon, May 12, 1998: US05751771 (4 worldwide citation)

The present invention provides a waveform data compression apparatus which can express waveform data by a small amount of compression data obtained by compressing the aforesaid waveform data, and a waveform data expansion apparatus which can reproduce the compression data produced by the aforesaid w ...


7
Renatus Josephus Van Der Vleuten: Data compression and expansion of a digital information signal. Koninklijke Philips Electronics, Michael E Belk, September 2, 2008: US07421138 (3 worldwide citation)

A data compression apparatus receives a digital information signal, determines a probability signal from the digital information signal and at least one previously determined value of the probability signal, entropy encodes the digital information signal into a compressed digital information signal, ...


8
Toshiki Miyane: Apparatus for expanding compressed binary data. Seiko Epson Corporation, Harold T Tsiang, September 3, 1996: US05553260 (3 worldwide citation)

A data expansion apparatus that performs data expansion operation for a data block unit in a constant period of time is provided. First and second memory devices are first initialized by storing zeroes at all of their addresses. Numeric data and number-of-zeroes data (i.e., data representing the num ...


9
Data expansion apparatus. Ibm, October 25, 1978: GB1529538-A (3 worldwide citation)

1529538 Data expansion INTERNATIONAL BUSINESS MACHINES CORP 25 April 1977 [30 June 1976] 17020/77 Heading G4A Data is stored in storage 2 such that certain segments are replaced by compact representations each including a flag and address, length and count fields representing the starting address an ...


10
Tateno Shuji: Data compression apparatus and data expansion apparatus. Nomura Research Institute, April 13, 2006: JP2006-100973 (3 worldwide citation)

PROBLEM TO BE SOLVED: To provide a technology of improving the compression efficiency without increasing a time required for compression processing.SOLUTION: A data compression apparatus 13 includes: a segmentation processing section 31 for sequentially segmenting a data block corresponding to any o ...