1
Yoshinori Hatori, Toshio Koga, Kiichi Matsuda, Naoki Mukawa: Image coding system coding digital image signals by forming a histogram of a coefficient signal sequence to estimate an amount of information. Kokusai Denshin Denwa, NEC Corporation, Fujitsu, Nippon Telegraph and Telephone Corporation, Sughrue Mion Zinn Macpeak & Seas, April 24, 1990: US04920426 (115 worldwide citation)

In an image coding system having a plurality of coding characteristics, such as quantization characteristics, information of a digital image signal sequence is monitored in each of a number of predetermined intervals by forming a histogram of a sequence of coefficients which is calculated from the d ...


2
Masahide Kaneko, Mutsumi Ohta, Kiichi Matsuda, Yoichi Kato: Encoder capable of faithfully and adaptively encoding a moving image. Kokusai Denshin Denwa, NEC Corporation, Fujitsu, Nippon Telegraph and Telephone Corporation, Sughrue Mion Zinn Macpeak and Seas, March 29, 1988: US04734767 (69 worldwide citation)

In an encoder responsive to a sequence of coefficient blocks each of which is composed of a plurality of orthogonal transform coefficients subjected to predictive encoding and orthogonal transform, the coefficient blocks are classified by a classification circuit (55) into a plurality of classes to ...


3
Kiyoshi Sakai, Takashi Itoh, Kiichi Matsuda: Video signal coding apparatus, coding method used in the video signal coding apparatus and video signal coding transmission system having the video signal coding apparatus. Fujitsu, Staas & Halsey, August 10, 1993: US05235618 (66 worldwide citation)

A signal coding apparatus, which is coupled, via a transmission path, to a receiver having a receiver buffer and a decoder, includes a coding unit for coding a signal and outputting information generated in a frame unit, the information being a coded signal. The apparatus also includes a transmitter ...


4
Hideo Kuroda, Naoki Mukawa, Kiichi Matsuda, Toshihiro Honma, Hiroshi Fukuda: Digital data code conversion circuit for variable-word-length data code. Nippon Telegraph & Telephone Public Corporation, Fujitsu, Staas & Halsey, June 3, 1986: US04593267 (57 worldwide citation)

A digital data code conversion circuit for a variable-word-length data code includes a data code conversion portion and a preparation circuit. In the preparation circuit, a variable-word-length data code having a word length greater than a number n is divided into a plurality of variable-word-length ...


5
Akira Nakagawa, Eishi Morimatsu, Kiichi Matsuda: Apparatus and method for coding and decoding video images. Fujitsu, Staas & Halsey, June 20, 2000: US06078617 (40 worldwide citation)

An apparatus and method for coding and decoding digital video images, capable of maintaining the quality of static regions, such as background images, in decoded pictures even when the resolution of pictures has been changed from high to low. The apparatus is equipped with two storage units, low-res ...


6
Yasuhiro Kawakatsu, Akihiro Yamori, Kiichi Matsuda, Akira Nakagawa: Function transform apparatus. Fujitsu, November 19, 1996: US05576958 (34 worldwide citation)

Frequently occurring DCT coefficients F(u, v) are predictable. Accordingly, values f.sub.u,v,F,(u,v) (x, y) for the frequently occurring DCT coefficients are calculated and stored, in advance, in a table. Among input DCT coefficients F(u, v), only non-zero DCT coefficients are processed. It is deter ...


7
Masahide Kaneko, Atsushi Koike, Mutsumi Ohta, Kiichi Matsuda, Naoki Mukawa, Yoichi Kato: Encoding system capable of accomplishing a high efficiency by anterior and/or posterior processing to quantization. Kokusai Denshin Denwa, NEC Corporation, Fujitsu, Nippon Telegraph and Telephone Corporation, Sughrue Mion Zinn Macpeak & Seas, March 13, 1990: US04908862 (30 worldwide citation)

In an encoding system responsive to a sequence of coefficient signals which results from a predetermined linear transform and which is divided into a sequence of blocks, anterior processing is carried out prior to quantization about the coefficient signals in each block to determine a significant ar ...


8
Masahide Kaneko, Kiichi Matsuda, Naoki Mukawa, Toshio Koga: System for coding and transmitting motion image signals. Kokusai Denshin Denwa, Fujitsu, Nippon Telegraph and Telephone Corporation, NEC Corporation, Staas & Halsey, February 14, 1989: US04805017 (29 worldwide citation)

A motion compensation difference interframe or intra-frame coding system includes a block data redundancy compression and coding unit, a PIXEL data coding unit and a prediction data generator unit. The block data redundancy compression and coding unit codes a motion compensated (MC) difference betwe ...


9
Takashi Hamano, Kiyoshi Sakai, Kiichi Matsuda: Image coding system which limits number of variable length code words. Fujitsu, Staas & Halsey, December 1, 1998: US05844611 (28 worldwide citation)

An image encoding control system includes an orthogonal transform encoder for carrying out orthogonal transform coding for each block which includes transform coefficients related to a plurality of blocks, each block obtained by dividing one picture of an input image signal into the plurality of blo ...


10
Hiroichi Egawa, Kiichi Matsuda, Yasushi Inamoto, Takashi Hamano, Naoshi Matsuo: Multimedia server having a plurality of stream controllers directly connected to the network. Fujitsu, Helfgott & Karas P C, February 10, 1998: US05717854 (25 worldwide citation)

Each of processor units 31-1-31-n comprises a CPU, memory, and interface function. A high-speed communications network 32 interconnects the processor units for inter-processor communications. Each of input/output units 33-1-33-n stores multimedia data and transmits the multimedia data through the ne ...