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EP0197154A1
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Fundamental apparatus for processing video signals
Assignee: Japan Broadcasting Corp
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Filing: 1985-09-30
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Granted: —
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Expires: 2005-09-30
Abstract
Abstract @ A fundamental apparatus for processing video signals comprising video signal select means (2) which selectively introduces video signals from a plurality of transmission lines (1), memory means (4) which stores video signals, write means (3) which writes video signals from the video signal select means (2) onto the memory means (4) with synchronizing signals of video signals as control singals, read means (5) which designates addresses of data stored in the memory means (4) to read data from the memory means (4), operation means (6) which performs arithmetic operation using data read out by the read means (5), output means (7) which produces the results of operation of the operation means (6) to the transmission lines (1) or which permits video signals of the transmission lines (1) to pass through, and control means (8) which controls the video signal select means (2), read means (5), operation means (6) and output means (7) relying upon independent synchronizing signals. By using the fundamental apparatus, varieties of processing can be performed in real time for the video signals that are raster-scanned.
Inventors
- 👤 Keinosuke Murakami
- 👤 Kazumasa Enami
- 👤 Nobuyuki Yagi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 17:22
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
A fundamental unit for processing video signals, characterized by comprising: a. video signal selection means receiving video signals transmitted through a plurality of transmission lines for selecting one of the video signals; b. memory means for storing therein a video signal; c. write means for storing one video signal selected from said video signal selection means into said memory means by utilizing a sync signal of said video signal as a control signal; d. readout means for specifying an address of data stored in said memory means to read out said data from said memory means; e. arithmetic means for effecting arithmetic operation of data read out by said readout means; f. output means for outputting a result of the arithmetic operation by said arithmetic means to said transmission lines or passing the video signals on said transmission lines through said output means; and g. control means for controlling said video signal selection means, said readout means, said arithmetic means and said output means in accordance with an independent sync signal.
Claim 2
Dependent Claim
171 words
A fundamental unit for processing video signals, characterized by comprising: a. video signal selection means receiving video signals transmitted through a plurality of transmission lines for selecting one of the video signals; b. memory means for storing therein a video signal; c. write means for storing one video signal selected from said video signal selection means into said memory means by utilizing a sync signal of said video signal as a control signal; d. readout means for specifying an address of data stored in said memory means to read out said data from said memory means; e. arithmetic means for effecting arithmetic operation of data read out by said readout means; f. output means for outputting a result of the arithmetic operation by said arithmetic means to said transmission lines or passing the video signals on said transmission lines through said output means; and g. control means for controlling said video signal selection means, said readout means, said arithmetic means and said output means in accordance with an independent sync signal.
Claim 3
Dependent Claim
47 words
A fundamental unit for processing video signals as claimed in claim 1, wherein said control means has a memory for storing therein a program for processing a video signal in a desired manner and is a sequencer which operates at a timing of a system sync signal.
Claim 4
Dependent Claim
38 words
3 . A fundamental unit for processing video signals as claimed in claim 1 or 2, wherein said write means is an address counter to which a clock and a sync signal are supplied from said control means.
Claim 5
Dependent Claim
92 words
A fundamental unit for processing video signals as claimed in claim 3, wherein said address counter includes a horizontal address counter and a vertical address counter; said clock is applied to the countup input terminal of said horizontal address counter; a horizontal sync signal of said sync signal is applied to the reset input terminal of said horizontal address counter and to the countup input terminal of said vertical address counter, and a vertical sync signal of said sync signal is applied to the reset input terminal of said vertical address counter.
Claim 6
Dependent Claim
21 words
A fundamental unit for processing video signals as claimed in claim 1, wherein said readout means is an arithmetic logic unit.
Claim 7
Dependent Claim
21 words
A fundamental unit for processing video signals as claimed in claim 1, wherein said arithmetic means is an arithmetic logic unit.
Claim 8
Dependent Claim
40 words
A fundamental unit for processing video signals a3 claimed in claim 1, wherein said output means selectively outputs said data read out from said memory means and said video signals on said transmission lines under the control of said sequencer.
Claim 9
Dependent Claim
237 words
A video signal processing system, characterized by comprising: a plurality of fundamental units for processing video signals, each comprising: a. video signal selection means receiving video signals transmitted through a plurality of transmission lines for selecting one of the video signals; b. memory means for storing therein a video signal; c. write means for storing one video signal selected from said video signal selection means into said memory means by utilizing a sync signal of said video signal as a control signal; d. readout means for specifying an address of data stored in said memory means to read out said data from said memory means; e. arithmetic means for effecting arithmetic operation of data read out by said readout means; f. output means for outputting a result of the arithmetic operation by said arithmetic means to said transmission lines or passing the video signals on said transmission lines through said output means; g. control means for controlling said video signal selection means, said readout means, said arithmetic means and said output means in accordance with an independent sync signal; and means for connecting the respective video signal selection means and the respective output means of said plurality of fundamental units for processing video signals in parallel to said plurality of transmission lines, so that the video signals from said plurality of transmission lines are processed in parallel by said plurality of fundamental units for processing video signals.
Claim 10
Dependent Claim
237 words
A video signal processing system, characterized by comprising: a plurality of fundamental units for processing video signals, each comprising: a. video signal selection means receiving video signals transmitted through a plurality of transmission lines for selecting one of the video signals; b. memory means for storing therein a video signal; c. write means for storing one video signal selected from said video signal selection means into said memory means by utilizing a sync signal of said video signal as a control signal; d. readout means for specifying an address of data stored in said memory means to read out said data from said memory means; e. arithmetic means for effecting arithmetic operation of data read out by said readout means; f. output means for outputting a result of the arithmetic operation by said arithmetic means to said transmission lines or passing the video signals on said transmission lines through said output means; g. control means for controlling said video signal selection means, said readout means, said arithmetic means and said output means in accordance with an independent sync signal; and means for connecting the respective video signal selection means and the respective output means of said plurality of fundamental units for processing video signals in parallel to said plurality of transmission lines, so that the video signals from said plurality of transmission lines are processed in parallel by said plurality of fundamental units for processing video signals.
References Cited (Backward Citations)
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