Video format signal recording and reproducing device

• US 4,286,281 A
• Filed: 09/26/1979
• Issued: 08/25/1981
• Est. Priority Date: 09/30/1978
• Status: Expired due to Term

• Current Assignee: Pioneer Electronics (USA) Incorporated (Pioneer Corporation)
• Original Assignee: Pioneer Electronics (USA) Incorporated (Pioneer Corporation)
• Inventors: Suzuki, Tsutomu
• Primary Examiner(s): Konick, Bernard
• Assistant Examiner(s): McElheny, Jr., Donald
• Application Number:
  US06/079,006
• Time in Patent Office: 699 Days
• Field of Search: 358/4, 358/128.5, 358/128.6, 358/147, 360/8, 360/9, 360/10, 360/19, 360/27, 360/37
• US Class Current: 386/248
• CPC Class Codes: G11B 15/02 Control of operating function, e.g. switching from recording to reproducing
• CPC Class Codes: G11B 19/20 Driving; Starting; Stopping; Control thereof
• CPC Class Codes: G11B 20/00007 Time or data compression or expansion audio compression based on psychoacoustics G10L19/00; data processing for reproducing audio data at different playback speeds G10L21/04; video compression H04N19/00; data compression per se H03M7/30
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/90 Tape-like record carriers
• CPC Class Codes: G11B 27/3054 Vertical Interval Time code [VITC]
• CPC Class Codes: H04N 5/9201 involving the multiplexing of an additional signal and the video signal
• CPC Class Codes: H04N 5/9202 the additional signal being a sound signal H04N5/9155, H04N5/92 take precedence
• CPC Class Codes: H04N 9/802 involving processing of the sound signal H04N9/806, H04N9/835 take precedence

Abstract

A video format signal recording and reproducing device in which an identification signal is inserted into each frame of the video format signal for identifying whether the corresponding data is video or audio data. The identification signal may further be capable of indicating whether corresponding video data is still picture data or motion picture data. In this case, the identification signal may be implemented as a color burst signal with the number of cycles within the burst set in accordance with whether the corresponding video data is still picture or motion picture data. The color burst signal is also inserted in each frame containing audio data so that there is no loss of color synchronization when audio frame data is being read from the recording medium.

Claims

1. A video format signal recording device for recording a video format signal on a recording medium comprising:

means for inserting an identification signal in a blanking portion of each frame of said video format signal, said identification signal identifying whether data within a corresponding frame is video data or audio data, wherein said identifying signal inserting means comprises means for inserting a first video identifying signal corresponding to motion picture data means for inserting a second video identifying signal corresponding to still picture data, and wherein said first and second video identifying signals comprise first and second numbers of cycles of a color burst signal.

2. The video format signal recording device of claim 1 further comprising means for inserting a color burst signal in frames corresponding to audio data.

9. The device of claims 1, 3 or 7 wherein said color burst signal is inserted for both video data and audio data, whereby no loss of color synchronization occurs upon the processing of audio data.

3. A video format signal reproducing device comprising means for detecting a video format signal including an identification signal recorded on a recording medium, means for separating said identification signal from said video format signal;

decision means for providing video data decision signal or an audio data decision signal according to said identification signal thus separated;

video signal processing means for reproducing video portions of said video format signal;

audio portions of said video format signal;

switching means for supplying said video format signal to said video signal processing means and said audio signal processing means separately in response to said video data decision signal and said audio data decision signal;

means for counting the number of cycles of a color burst signal; and

means for repeatedly scanning the recording medium in a mode for reproducing still picture data in response to a first count output of said counting means and means for sequentially scanning the recording medium in a mode for reproducing motion picture data for a second count output of said counting means.

4. The video signal reproducing device of claim 3 further comprising control means for controlling said signal detecting means in response to said video data decision signal and said audio data decision signal.

5. The video format signal reproducing device of claim 3 further comprising means coupled to said audio signal processing means for muting an output audio signal while no audio data decision signal is present.

6. A video format signal recording and reproducing device for recording a video format signal on a recording medium in a recording mode and for playing back signals so recorded in a reproducing mode comprising:

means for inserting an identification signal in a blanking portion of each frame of said video format signal as it is recorded in said recording mode, said identification signal identifying whether data within a corresponding frame is video data or audio data;

means for detecting said identification signal in said playback mode;

means for producing a video data decision signal or an audio data decision signal according to said identification signal thus separated;

video signal processing means for reproducing video portions of said video format signal;

audio signal processing means for reproducing audio portions of said video format signal; and

switching means for supplying said video format signal to said video signal processing means and said audio signal processing means separately in response to said video data decision signal and said audio data decision signal, said identification signal being based, at least in part, on the number of cycles of a color burst signal in said blanking portion.

7. The device of claim 6 wherein the number of cycles of said color burst signal identifies said video format signal as one of motion picture data and still picture data.

8. The device of claims 6 or 7 wherein said color burst signal is inserted in the back porch of the horizontal blanking portion of said corresponding frame.