Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1990-10-17
1991-08-06
Envall, Jr., Roy N.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358335, 358185, 360 91, H04N 979
Patent
active
050382195
ABSTRACT:
In an apparatus for recording a selected one of at least two different types of video signals, such as, a studio standard video signal and a video signal transmitted in the MUSE system, which are respectively characterized by different numbers of effective scanning lines and different durations of the video parts in the respective effective scanning lines, analog-to-digital conversion circuits convert an input video signal of the selected type into digital signals, a digital signal processing ciruit successively writes and reads, and thereby temporarily stores, samples of the digital signals from the analog-to-digital conversion circuits, digital-to-analog conversion circuits convert digital signals read by the digital signal processing circuit into analog signals, a recording signal processing circuit receives such analog signals and processes the same to provide a recording signal for recording on a recording medium, and a control circuit for the digital signal processing circuit is operative to select the samples of the digital signal which are successively written, or read from the digital signal processing circuit so as to limit, in the recording signal, the number of the effective scanning lines and/or the duration of the video part in each of the effective scanning lines to the least of the different numbers of effective scanning lines and the shortest of the different durations.
REFERENCES:
patent: 4942466 (1990-07-01), Sandbank et al.
patent: 4963991 (1990-10-01), Honjo
patent: 4989091 (1991-01-01), Lucas
Nishikata Yutaka
Yamashita Keitaro
Envall Jr. Roy N.
Frommer William S.
Sinderbrand Alvin
Sony Corporation
Tran Thai
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