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US4583129A Expired / Lapsed US ⏱️ 0.0 years remaining

Color TV signal playback apparatus

Assignee: Victor Company of Japan Ltd
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Filing: 1983-12-12
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Granted: 1986-04-15
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Expires: 2003-12-12
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Abstract

Abstract A color TV signal playback apparatus capable of applying H (horizontal sync) period compensation and color sequence compensation to a color TV signal stored in a magnetic tape. A 1-H delayed reproduced color signal and a non-delayed reproduced color signal are switched from one to the other in response to a color sequence compensating signal. The selected reproduced color signal is multiplexed with a reproduced luminance signal to prepare a composite video signal. A signal produced by delaying the composite video signal by a period of time equal to a deviation in the period of a horizontal sync signal and the non-delayed composite video signal are selected in response to an H-period compensating signal, thereby producing a compensated color TV signal.

Inventors

  • 👤 Koji Arai

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 21:07
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N9/87; H04N9/873

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 396 words
A color television signal playback apparatus for playing back a color television signal recorded on a magnetic tape, said color television signal playback apparatus comprising: first delay means for delaying an incoming reproduced color signal by 1 H to generate a 1-H delayed reproduced color signal; color sequence compensating signal generator means for generating a color sequence compensating signal to compensate a phase of the reproduced color signal; first switching means for switching the reproduced color signal and the 1-H delayed reproduced color signal from one to the other in response to the color sequence compensating signal, thereby producing a switched reproduced color signal; multiplexer means for multiplexing the switched reproduced color signal and an incoming reproduced luminance signal to produce a composite video signal; second delay means for delaying the composite video signal by a period of time equal to an amount of deviation in a period of a horizontal sync signal which develops when a playback operation occurs at a speed different from a recording speed, thereby producing a delayed composite video signal; H-period compensating signal generator means for generating an H-period compensating signal in response to a timing at which said deviation occurs in the period of the horizontal sync signal; and second switching means for switching the composite video signal and the delayed composite video signal from one to the other in response to the H-period compensating signal, thereby producing a compensated color television signal, said color sequence compensating signal generator means comprising a third delay means for delaying an incoming reproduced color burst phase detection output signal by a period of time equal to the amount of deviation in the period of the horizontal sync signal, thereby producing a delayed color burst phase detection output signal, third switching means for switching the color burst phase detection output signal and the delayed color burst phase detection output signal from one to the other in response to the H-period compensating signal, thereby producing an H-period compensated color burst phase detection output signal, divider means for dividing a frequency of a signal corresponding to a timing of the horizontal sync signal produced from the reproduced luminance signal to produce a divided signal, and color sequence compensating signal output means for producing the color sequence compensating signal from a phase of the compensated color burst phase detection output and a phase of the divided signal.
Claim 2
Dependent Claim 396 words
A color television signal playback apparatus for playing back a color television signal recorded on a magnetic tape, said color television signal playback apparatus comprising: first delay means for delaying an incoming reproduced color signal by 1 H to generate a 1-H delayed reproduced color signal; color sequence compensating signal generator means for generating a color sequence compensating signal to compensate a phase of the reproduced color signal; first switching means for switching the reproduced color signal and the 1-H delayed reproduced color signal from one to the other in response to the color sequence compensating signal, thereby producing a switched reproduced color signal; multiplexer means for multiplexing the switched reproduced color signal and an incoming reproduced luminance signal to produce a composite video signal; second delay means for delaying the composite video signal by a period of time equal to an amount of deviation in a period of a horizontal sync signal which develops when a playback operation occurs at a speed different from a recording speed, thereby producing a delayed composite video signal; H-period compensating signal generator means for generating an H-period compensating signal in response to a timing at which said deviation occurs in the period of the horizontal sync signal; and second switching means for switching the composite video signal and the delayed composite video signal from one to the other in response to the H-period compensating signal, thereby producing a compensated color television signal, said color sequence compensating signal generator means comprising a third delay means for delaying an incoming reproduced color burst phase detection output signal by a period of time equal to the amount of deviation in the period of the horizontal sync signal, thereby producing a delayed color burst phase detection output signal, third switching means for switching the color burst phase detection output signal and the delayed color burst phase detection output signal from one to the other in response to the H-period compensating signal, thereby producing an H-period compensated color burst phase detection output signal, divider means for dividing a frequency of a signal corresponding to a timing of the horizontal sync signal produced from the reproduced luminance signal to produce a divided signal, and color sequence compensating signal output means for producing the color sequence compensating signal from a phase of the compensated color burst phase detection output and a phase of the divided signal.
Claim 3
Dependent Claim 23 words
A color television signal playback apparatus as claimed in claim 1, in which the third delay means comprises a 1/2 H monostable multivibrator.
Claim 4
Dependent Claim 20 words
A color television signal playback apparatus as claimed in claim 1, in which the divider means comprises a 1/4 downcounter.
Claim 5
Dependent Claim 24 words
A color television signal playback apparatus as claimed in claim 1, in which the color sequence compensating signal output means comprises a D-type flip-flop.

References Cited (Backward Citations)

US4330791A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-04-14 1989-10-14 1990-04-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-04-14 1993-10-14 1994-04-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-04-14 1997-10-14 1998-04-15 $7700.00 Window Closed / Lapsed

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