EP0085578A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for recording an information signal comprising a video signal and an audio signal
Assignee: Sony Corp
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Filing: 1983-02-02
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Granted: —
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Expires: 2003-02-02
Abstract
Abstract Apparatus for recording an information signal comprising at least an analog audio signal in a plurality of successive tracks (2A, 2B) on a magnetic tape (2) includes a PCM processing circuit (22) for converting an analog audio signal into a PCM audio signal, a video signal processing circuit (13, 14, 19) for processing a video signal to produce an output video signal, a rotary magnetic head assembly (1A, 1B) for recording the output video signal and the PCM audio signal in the plurality of successive tracks (2A, 2B) on the tape (2), a switch assembly (17A, 17B) for supplying the output video signal and the PCM audio signal to the rotary magnetic head assembly (1A, 1B), and a control circuit (34, etc) for controlling the switch assembly (17A, 17B) to supply the output video signal and the PCM audio signal to the rotary magnetic head assembly (1A, 1B) during a video use mode so that the rotary magnetic head assembly (1A, 1B) records the output video signal in a main section of each track (2A, 2B) and to supply only the PCM audio signal to the rotary magnetic head assembly (1A, 1B) during an audio use mode so that the rotary magnetic head assembly (1A, 1 B) records the PCM audio signal in different segments of the main section and overscan section of each track (2A, 2B).
Inventors
- 👤 Minoru Morio
- 👤 Kenji Nakano
- 👤 Hisayoshi Moriwaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 20:30
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/928; G; G11; G11B; G11B20/00; G11B20/10; G11B20/10527; G11B5/00; G11B5/008; G11B5/00813; G11B5/00847; G11B5/0086; G11B5/00878
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
24 words
Apparatus for recording an information signal comprising at least an audio signal in a plurality of successive tracks (2A, 28) on a record medium
Claim 2
Dependent Claim
24 words
Apparatus for recording an information signal comprising at least an audio signal in a plurality of successive tracks (2A, 28) on a record medium
Claim 3
Dependent Claim
204 words
(2), the apparatus comprising: audio signal processing means (22) for converting said audio signal into digital form; video signal processing means (13, 14, 19) for processing a video signal of said information signal to produce an output video signal; transducer means (lA, 1B) for recording said output video signal and said digitized audio signal in said plurality of successive tracks (2A, 2B) on said record medium (2); switch means (17A, 17B) for supplying said output video signal and said digitized audio signal to said transducer means (lA, 1B); and control means (34, etc) for controlling said switch means (17A, 17B) to supply said output video signal and said digitized audio signal to said transducer means (lA, 1B) during a video use mode so that said transducer means (lA, 1B) records the output video signal in a main section of each track (2A, 2B) and the digitized audio signal in an overscan section of each track (2A, 2B) and to supply only said digitized audio signal to said transducer means (lA, 1B) during an audio use mode so that said transducer means (lA, 1B) records the digitized audio signal in at least one of the main section and overscan section of each track (2A, 2B).
Claim 4
Dependent Claim
204 words
(2), the apparatus comprising: audio signal processing means (22) for converting said audio signal into digital form; video signal processing means (13, 14, 19) for processing a video signal of said information signal to produce an output video signal; transducer means (lA, 1B) for recording said output video signal and said digitized audio signal in said plurality of successive tracks (2A, 2B) on said record medium (2); switch means (17A, 17B) for supplying said output video signal and said digitized audio signal to said transducer means (lA, 1B); and control means (34, etc) for controlling said switch means (17A, 17B) to supply said output video signal and said digitized audio signal to said transducer means (lA, 1B) during a video use mode so that said transducer means (lA, 1B) records the output video signal in a main section of each track (2A, 2B) and the digitized audio signal in an overscan section of each track (2A, 2B) and to supply only said digitized audio signal to said transducer means (lA, 1B) during an audio use mode so that said transducer means (lA, 1B) records the digitized audio signal in at least one of the main section and overscan section of each track (2A, 2B).
Claim 5
Dependent Claim
213 words
Apparatus according to claim 1 wherein said control means (34, etc) includes counter means (32) for counting a predetermined number of time periods for each field interval of said video signal and producing a count value in response thereof, selector means (34) for selecting at least one desired one of said count value and producing an output signal corresponding thereof, and decoder means (33) for producing at least one switch control signal in response to said count value and said output signal from said selector means (34) and supplying said at least one switch control signal to said switch means (17A, 17B) to control said switch means (17A, 17B) to supply said output video signal and said digitized audio signal to said transducer means (lA, 1B) during said video use mode so that said transducer means (lA, 1B) records the output video signal in the main section of each track (2A, 2B) and the digitized audio signal in the overscan section of each track (2A, 2B) and to supply only the digitized audio signal to said transducer means (1A, 1B) during said audio use mode so that said transducer means (lA, 1B) records the digitized audio signal in at least one of the main section and overscan section of each track (2A, 2B).
Claim 6
Dependent Claim
61 words
Apparatus according to claim 2 wherein said control means (34, etc) includes means (36) for producing a vertical synchronizing signal having a period equal to a field interval of said video signal, and clock generator means (31) for producing clock pulses, and said counter means (32) produces said count value in response to said clock pulses and said vertical synchronizing signal.
Claim 7
Dependent Claim
66 words
Apparatus according to claim 3 wherein said control means (34, etc) includes frequency divider means (38) for producing a frequency-divided signal in response to said vertical synchronizing signal and having a period equal to twice that of said vertical synchronizing signal, and said counter means (32) includes a reset input terminal supplied with said frequency-divided signal and a clock input terminal supplied with said clock pulses.
Claim 8
Dependent Claim
127 words
Apparatus according to claim 4 wherein said video signal includes a vertical synchronizing signal and said clock generator means (31) produces a substitute vertical synchronizing signal having a period substantially equal to that of said vertical synchronizing signal of said video signal, and said control means (34, etc) includes switch means (37) for supplying one of said vertical synchronizing signal of said video signal and said substitute vertical synchronizing signal to said frequency divider means (38), and switch control means (35) for controlling said switch means (37) to switch said vertical synchronizing signal of said video signal to said frequency divider means (38) during said video use mode and to switch said substitute vertical synchronizing signal to said frequency divider means (38) during said audio use mode.
Claim 9
Dependent Claim
49 words
Apparatus according to claim 2 wherein said selector means (34) includes switch control means (35) for producing a selection signal corresponding to one of said video use mode and said audio use mode, and count value selector means for producing said output signal in response to said selection signal.
Claim 10
Dependent Claim
96 words
Apparatus according to claim 6 wherein said count value selector means selects a predetermined count value corresponding to a time period when said transducer means (lA, 1B) records said digitized audio signal in the overscan section of each track (2A, 2B) during said video use mode, and said selector means (34) can be varied to select a count value corresponding to a time period when said transducer means (lA, 1B) records said digitized audio signal in at least one of the overscan section and main section of each track (2A, 2B) during said audio use mode.
Claim 11
Dependent Claim
69 words
Apparatus according to claim 7 wherein said decoder means (33) produces two switch control signals and a control signal corresponding to a combination of said switch control signals and supplies said control signal to said audio signal processing means (22) to enable said audio signal processing means (22) to process said digitized audio signal only during time periods corresponding to said count value selected by said selector means (34).
References Cited (Backward Citations)
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