Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1986-07-09
1987-11-17
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358138, 358 12, 375122, H04N 712, H04N 1106
Patent
active
047077379
ABSTRACT:
A band compression apparatus for transmitting a video signal having three color component signals sampled at a sampling frequency of 2Fs and a gradation of N bits per picture element by a transmission path of a gradation of N bits per sample and a sample transmission frequency 2Fs includes a prefilter for restricting the band of each color component signal; a sub-sample circuit for compressing the respective band restricted color component signal to a sampling frequency Fs; a signal separation switching circuit for separating data of 3n bits comprising the upper n bits of the sub-sampled color component signals
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patent: 4468708 (1984-08-01), Coleman, Jr.
patent: 4589110 (1986-05-01), Eng et al.
patent: 4602333 (1986-07-01), Komori
Tsuboi et al., "Fiber-Optic HDTV Transmission Technology", dated Jan. 1985, pp. 4-10.
Yoshino et al., "Digital Frame Memory for Still Picture Television Receivers--Pass Encoding System and Application", dated Apr. 1980, vol. 89, pp. 257-262.
Ouellet et al., "Sampling and Reconstruction of NTSC Video Signals at Twice the Color Subcarrier Frequency", dated Dec. 1981, pp. 1823-1832.
Adachi Mitsunori
Tomita Satoru
Britton Howard W.
Mitsubishi Kenki Kabushiki Kaisha
Peng John K.
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