US5438463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic video and audio recording and/or reproducing apparatus for simultaneously recording input video and audio signals
Assignee: Teac Corp
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Filing: 1994-01-07
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Granted: 1995-08-01
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Expires: 2014-01-07
Abstract
Abstract A magnetic video and audio signals recording apparatus for simultaneously recording video signals and two audio signals in first and second recording areas on a magnetic recording medium comprising a video signal recording structure for recording the video signals in the first recording area using magnetic heads A1 and B2, a first audio signal recording structure for recording an FM audio signal to be recorded obtained by at least frequency-modulating the audio signals in a deep portion of the second recording area using a magnetic head C1, and a second audio signal recording structure for subsequently recording a PCM audio signal to be recorded on a surface portion of the second recording area using a magnetic head D1. A magnetic recording and reproducing apparatus for recording first and second input video signals and first and second L and R channel input audio signals associated with first and second programs wherein the video signals are recorded on video signal recording tracks TA1 through TB2 formed on a magnetic tape T and, after a first audio signal to be recorded is recorded at a deep portion of an audio-exclusive track TC, a second recording audio signal is recorded on a surface portion thereof at a time interval using magnetic heads C1 and C2.
Inventors
- 👤 Hiroshi Nishiumi
- 👤 Kanjyu Ishii
- 👤 Mitsuhiko Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:17
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; H04N5/78213; G; G11; G11B; G11B5/00; G11B5/008; G11B5/00813; G11B5/00847; G11B5/0086; G11B5/02; H04N9/00; H04N9/79; H04N9/797; H04N9/7973; H04N9/80; H04N9/802; H04N9/81; H04N9/82; H04N9/8205; H04N9/8211
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
235 words
A magnetic video and audio signal recording apparatus for simultaneously recording an input video signal and an input audio signal on a magnetic recording medium forming first, second and third tracks thereon at a predetermined track pitch, comprising: video signal recording means including first and second magnetic heads for recording a video signal derived from the input video signal on the first and second tracks using respectively the first and second magnetic heads, a head width of the first and second magnetic heads being substantially equal to the predetermined track pitch; audio signal recording means including a third magnetic head having a head width larger than the predetermined track pitch for recording an audio signal obtained by frequency-multiplexing first and second audio signals derived from the input audio signal on the third track using the third magnetic head; wherein the third magnetic head precedes the first and second magnetic heads with respect to scanning of the magnetic recording medium and forms the third track having initially a full head width of the third magnetic head, subsequently after, the first magnetic head forms the first track erasing partially one side of the third track, and then the second magnetic head forms the second track erasing partially another side of the third track, so that the third track having a track width substantially equal to the predetermined track pitch is consequently formed on the magnetic recording medium.
Claim 2
Dependent Claim
235 words
A magnetic video and audio signal recording apparatus for simultaneously recording an input video signal and an input audio signal on a magnetic recording medium forming first, second and third tracks thereon at a predetermined track pitch, comprising: video signal recording means including first and second magnetic heads for recording a video signal derived from the input video signal on the first and second tracks using respectively the first and second magnetic heads, a head width of the first and second magnetic heads being substantially equal to the predetermined track pitch; audio signal recording means including a third magnetic head having a head width larger than the predetermined track pitch for recording an audio signal obtained by frequency-multiplexing first and second audio signals derived from the input audio signal on the third track using the third magnetic head; wherein the third magnetic head precedes the first and second magnetic heads with respect to scanning of the magnetic recording medium and forms the third track having initially a full head width of the third magnetic head, subsequently after, the first magnetic head forms the first track erasing partially one side of the third track, and then the second magnetic head forms the second track erasing partially another side of the third track, so that the third track having a track width substantially equal to the predetermined track pitch is consequently formed on the magnetic recording medium.
Claim 3
Dependent Claim
70 words
A magnetic video and audio signal recording apparatus claimed in claim 1 further comprising a fourth magnetic head for recording an additional audio signal disposed between the first and the third magnetic heads in angular positions with respect to a circular head arrangement of the first, third and fourth magnetic heads, a vertical center of the fourth magnetic head being aligned with a vertical center of the third magnetic head.
Claim 4
Dependent Claim
193 words
A magnetic video and audio signal reproducing apparatus for simultaneously reproducing a video signal recorded on first and second tracks on a magnetic recording medium and an audio signal recorded on a third track interposed between the first and the second track on the magnetic recording medium, the first, second and third tracks being disposed on the magnetic recording medium at a predetermined track pitch, the audio signal recorded on the third track being a form of frequency-multiplexed two audio signals, the magnetic video and audio signal reproducing apparatus comprising: video signal reproducing means including first and second magnetic heads for reproducing the video signal recorded on the first and second tracks using respectively the first and second magnetic heads, a head width of the first and second magnetic heads being substantially equal to the predetermined track pitch; audio signal reproducing means including a third magnetic head having a head width larger than the predetermined track pitch for reproducing the audio signal recorded on the third track using the third magnetic head; wherein the third magnetic head precedes the first and second magnetic heads with respect to scanning of the magnetic recording medium.
Claim 5
Dependent Claim
193 words
A magnetic video and audio signal reproducing apparatus for simultaneously reproducing a video signal recorded on first and second tracks on a magnetic recording medium and an audio signal recorded on a third track interposed between the first and the second track on the magnetic recording medium, the first, second and third tracks being disposed on the magnetic recording medium at a predetermined track pitch, the audio signal recorded on the third track being a form of frequency-multiplexed two audio signals, the magnetic video and audio signal reproducing apparatus comprising: video signal reproducing means including first and second magnetic heads for reproducing the video signal recorded on the first and second tracks using respectively the first and second magnetic heads, a head width of the first and second magnetic heads being substantially equal to the predetermined track pitch; audio signal reproducing means including a third magnetic head having a head width larger than the predetermined track pitch for reproducing the audio signal recorded on the third track using the third magnetic head; wherein the third magnetic head precedes the first and second magnetic heads with respect to scanning of the magnetic recording medium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |