Patent US4970602A successfully refreshed from Google Patents.
US4970602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk player for displaying recorded audio signals
Assignee: Pioneer Corp
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Filing: 1988-09-14
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Granted: 1990-11-13
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Expires: 2008-09-14
Abstract
Abstract A disk player for a disk having video signals and digital audio signals recorded thereon. The disk player includes a video reproducing system for reproducing video signals recorded on the disk, an audio reproducing system for reproducing digital audio signals recorded on the disk as analog audio signals, and a processing circuit for converting the digital audio signals into a video signal so that the audio signals recorded on the disk can be displayed.
Inventors
- 👤 Junichi Yoshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:38
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/9201; H04N5/9202; H04N5/9204; H04N5/9206; H04N5/9208; H04N9/00; H04N9/79; H04N9/80; H04N9/802
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
123 words
A disk player for disks having at least one of a video signal and digital data representing an audio signal recorded thereon, the disk player comprising: a video reproducing system for receiving and for reproducing the video signal recorded on a disk; an audio reproducing system, connected to receive the recorded digital data representing an audio signal, for converting the received digital data to an audio signal; and a digital processing circuit, also connected to receive the recorded digital data representing an audio signal, for converting the received digital data into a video signal, thereby outputting a video-converted digital audio signal, and supplying the video-converted digital audio signal to said video reproducing system so that the video-converted digital audio signal can be displayed.
Claim 2
Dependent Claim
123 words
A disk player for disks having at least one of a video signal and digital data representing an audio signal recorded thereon, the disk player comprising: a video reproducing system for receiving and for reproducing the video signal recorded on a disk; an audio reproducing system, connected to receive the recorded digital data representing an audio signal, for converting the received digital data to an audio signal; and a digital processing circuit, also connected to receive the recorded digital data representing an audio signal, for converting the received digital data into a video signal, thereby outputting a video-converted digital audio signal, and supplying the video-converted digital audio signal to said video reproducing system so that the video-converted digital audio signal can be displayed.
Claim 3
Dependent Claim
69 words
The disk player according to claim 1, wherein said audio reproducing system includes a first system for processing digital data representing an audio signal recorded on a CD region of a disk, and a second system for processing digital data representing an audio signal recorded on a video region of the disk, and means for selectively supplying the outputs of said first and second systems to said processing circuit.
Claim 4
Dependent Claim
41 words
The disk player according to claim 1, wherein said digital processing circuit includes means for dividing the video-converted digital audio signal into frames, and means for synchronously sampling the frames according to a picture being reproduced in said video reproducing system.
Claim 5
Dependent Claim
56 words
The disk player according to claim 1, wherein said video reproducing system includes a demodulating circuit for receiving the video signal recorded on a disk, a time axis correction circuit connected to receive an output of said demodulating circuit, and a video signal processing circuit connected to receive an output of said time axis correction circuit.
Claim 6
Dependent Claim
88 words
The disk player according to claim 4, wherein said video reproducing system further includes: a separating circuit connected to receive an output of said demodulating circuit, a voltage-controlled oscillator connected to receive an output of said separating circuit, and a time axis control circuit, connected to receive an output from said time axis correction circuit and an output from said voltage-controlled oscillator, for supplying a control signal to said time axis control circuit in response to the outputs from said time axis correction circuit and said voltage-controlled oscillator.
Claim 7
Dependent Claim
85 words
The disk player according to claim 1, wherein said audio reproducing system includes first equalizer circuit means having first equalizing characteristics, a second equalizer circuit means having second equalizing characteristics, which are different from the first equalizing characteristics, select switch means for selectively supplying an output of only one of said first and second equalizer circuit means, a demodulation-correction circuit connected to receive the output supplied by said select switch means, and an audio signal processing circuit for receiving an output of said demodulation-correction circuit.
Claim 8
Dependent Claim
23 words
The disk player according to claim 6, wherein said digital processing circuit is also connected to receive the output of said demodulation-correction circuit.
Claim 9
Dependent Claim
17 words
The disk player according to claim 6, wherein said audio signal processing circuit includes a digital-to-analog converter.
Claim 10
Dependent Claim
56 words
The disk player according to claim 6, wherein said audio reproducing system further includes a digital data extracting circuit for receiving a recorded video signal containing the digital data representing an audio signal, and for extracting the digital data therefrom, said second equalizer circuit means connected to receive an output of said digital data extracting circuit.
Claim 11
Dependent Claim
28 words
The disk player according to claim 6, wherein said first and second equalizer circuit means each comprises an equalizer circuit and an amplifier connected to said equalizer circuit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-12 | 1994-05-14 | 1994-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-12 | 1998-05-14 | 1998-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-12 | 2002-05-14 | 2002-11-13 | $7700.00 | Window Closed / Lapsed |