Video signal generating apparatus with color sequencing

• US 4,677,464 A
• Filed: 06/08/1984
• Issued: 06/30/1987
• Est. Priority Date: 06/13/1983
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Yamaji, Kazunori, Nakamura, Takashi, Kihara, Taku
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Bauer, Robert M.
• Application Number:
  US06/618,839
• Time in Patent Office: 1,117 Days
• Field of Search: 358/41, 358/137, 358/11, 358/12, 358/140, 358/141, 358/312, 360/9.1
• US Class Current: 375/240.01
• CPC Class Codes: H04N 9/79 Processing of colour television signals in connection with recording

Abstract

A video signal generating apparatus having a video camera which has a higher scanning speed than that of a standard video camera for generating a prior standard television video signal is disclosed which includes a circuit for dividing the video signal into a plurality of channel video signals, a circuit for expanding a time axis of the channel video signals, a circuit for combining the time axis expanded channel video signals for producing a plurality of composite video signals so that each of the composite video signals has a band width similar to that of the standard television video signal respectively and, a circuit for supplying a reference signal to the combining circuit so that each of the composite video signals has a color framing sequence same as that of the standard television video signal respectively.

Claims

1. A video signal generating apparatus having a color video camera which has a higher scanning speed than that of a standard color video camera for generating a conventional standard television signal having a conventional bandwidth, comprising:

means for dividing a color video signal from said video camera into a plurality of channel video signals having respective time axes;

means for expanding the time axis of each of said channel video signals to produce a plurality of time axis expanded channel video signals;

means for converting said time axis expanded channel video signals into a plurality of composite video signals each having a bandwidth similar to said conventional bandwidth of said conventional standard television signal; and

means for supplying a reference signal to said means for converting so that each of said composite video signals has a color framing sequence the same as that of said conventional standad television signal.

2. The video signal generating apparatus according to claim 1, in which said means for dividing includes analaog-to-digital converter means for converting said video signal from said video camera into a digital video signal and a plurality of memory circuits, and said means for expanding includes writing and reading address setting circuit means, said plurality of memory circuits being controlled by said writing and reading address setting circuit means to expand the time axis of said digital video signal to produce a plurality of time axis expanded digital video signals and a plurality of digital-to-analog converting means for converting said time axis expanded digital video signals provided from said plurality of memory circuits into a corresponding plurality of time axis expanded analog video signals.

3. The apparatus according to claim 1, in which said reference signal is a color subcarrier signal.

4. The apparatus according to claim 1, in which said means for supplying a reference signal includes reference signal generator means for producing first and second color subcarrier signals, said first and second color subcarrier signals having opposite phases, and means for selectively supplying one of said first and second color subcarrier signals to said converting means in response to the scanning speed of said video camera.