EP0176257A2
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EP
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Magnetic recording apparatus for intermittently recording a video signal
Assignee: Mitsubishi Electric Corp
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Filing: 1985-08-27
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Granted: —
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Expires: 2005-08-27
Abstract
Abstract A magnetic tape (3) is intermittently driven for one frame period at intervals of a predetermined odd number of frames so that a video signal applied from an input terminal (1) is intermittently recorded by magnetic heads (5a) and (5b). The use of an odd number ensures that the colour burst signals in succeeding recorded frames are in the normal relation to each other, so as to avoid possible colour disappearance.
Inventors
- 👤 Hiroshi C/O Mitsubishi Denki K.K. Shimoi
- 👤 Takafumi Inatomi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 06:18
CPC Classifications
G; G11; G11B; G11B5/00; G11B15/00; G11B15/18; G11B15/1808; G11B5/008; G11B5/00813; G11B5/00878; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/915; H04N9/00; H04N9/79; H04N9/80; H04N9/82; H04N9/87; H04N9/873
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
137 words
An apparatus for intermittently recording a video signal of the PAL system or the SECAM system on a magnetic record medium (3), comprising: video signal input means (1) for applying a video signal to be recorded, record signal processing means (2) for converting the video signal applied from said video signal input means to a magnetically recordable signal, magnetic heads (5a, 5b) for receiving the output of said record signal processing means to record the video signal on said magnetic record medium, feed mechanism (13 - 15) for feeding said magnetic record medium for recording said video signal, and intermittent drive control means (8 - 12) for intermittently driving said feed mechanism for one frame period at intervals of a predetermined odd number"of frames in synchronism with the video signal applied from said video signal input means.
Claim 2
Independent Claim
137 words
An apparatus for intermittently recording a video signal of the PAL system or the SECAM system on a magnetic record medium (3), comprising: video signal input means (1) for applying a video signal to be recorded, record signal processing means (2) for converting the video signal applied from said video signal input means to a magnetically recordable signal, magnetic heads (5a, 5b) for receiving the output of said record signal processing means to record the video signal on said magnetic record medium, feed mechanism (13 - 15) for feeding said magnetic record medium for recording said video signal, and intermittent drive control means (8 - 12) for intermittently driving said feed mechanism for one frame period at intervals of a predetermined odd number"of frames in synchronism with the video signal applied from said video signal input means.
Claim 3
Dependent Claim
23 words
An apparatus for intermittently recording a video signal as set forth in claim 1, said apparatus being applied to a video tape recorder.
Claim 4
Dependent Claim
46 words
An apparatus for intermittently recording a video signal as set forth in claim 2, further comprising switching means (4) for applying the output of said record signal processing means to said magnetic heads only at the time when said feed mechanics feeds said magnetic record medium.
Claim 5
Dependent Claim
75 words
An apparatus for intermittently recording a video signal as set forth in claim 3, wherein said video signal applied from said video signal input means includes a horizontal synchronizing signal and a vertical synchronizing signal together with a picture signal, and said intermittent drive control means comprises intermittent drive control signal forming means (8 - 12) for forming an intermittent drive control signal for intermittently driving said feed mechanism, based on said vertical synchronizing signal.
Claim 6
Dependent Claim
118 words
An apparatus for intermittently recording a video signal as set forth in claim 4, wherein said intermittent drive control signal forming means comprises: a vertical synchronizing signal separating circuit (8) for separating and extracting said vertical synchronizing signal from said video signal, frame synchronizing signal generating means (10) for generating a frame synchronizing signal based on said vertical synchronizing signal separated and extracted by said vertical synchronizing signal separating circuit, counter means (11) for counting the number of said frame synchronizing signals to provide a count-up signal at intervals of said predetermined odd number of frames, and logical circuit means (12) for forming said intermittent drive control signal based on said frame synchronizing signal and said count-up signal.
Claim 7
Dependent Claim
109 words
An apparatus for intermittently recording a video signal as set forth in claim 4, wherein said intermittent drive control signal forming means comprises: a vertical synchronizing signal separating circuit (8) for separating and extracting said vertical synchronizing signal from said video signal, frame synchronizing signal generating means (10) for generating a frame synchronizing signal based on said vertical synchronizing signal separated and extracted by said vertical synchronizing signal separating circuit, timer means (16) for providing a timing signal at intervals of said predetermined odd number of frames, and logical circuit means (12) for forming said intermittent drive control signal based on said frame synchronizing signal and said timing signal.
Claim 8
Independent Claim
68 words
A method of recording intermittently a video signal in which a video signal is supplied to a recording head (5a,5b) and is recorded intermittently on a recording medium (3), and the medium is driven intermittently in synchronism with the frames of the video signal, the parts of the signal not recorded on the recording medium during the said intermittent recording being n frames long where n is even.
Claim 9
Independent Claim
68 words
A method of recording intermittently a video signal in which a video signal is supplied to a recording head (5a,5b) and is recorded intermittently on a recording medium (3), and the medium is driven intermittently in synchronism with the frames of the video signal, the parts of the signal not recorded on the recording medium during the said intermittent recording being n frames long where n is even.
Claim 10
Dependent Claim
90 words
Apparatus for recording intermittently a video signal, the apparatus having a recording head (5a i 5b) operable to record a video signal intermittently on a recording medium (3), and means (13,14,15) to drive a recording medium past the head, the said drive means being operable to drive the recording medium intermittently in synchronism with the frames of the video signal, the parts of the signal not recorded on the recording medium during the said intermittent recording being n frames long where n is a preselected integer which may be even.
Claim 11
Dependent Claim
90 words
Apparatus for recording intermittently a video signal, the apparatus having a recording head (5a i 5b) operable to record a video signal intermittently on a recording medium (3), and means (13,14,15) to drive a recording medium past the head, the said drive means being operable to drive the recording medium intermittently in synchronism with the frames of the video signal, the parts of the signal not recorded on the recording medium during the said intermittent recording being n frames long where n is a preselected integer which may be even.
Claim 12
Dependent Claim
89 words
Apparatus for recording intermittently a video signal, the apparatus having a recording head (5a,5b) operable to record a video signal intermittently on a recording medium (3), and means (13,14,15) to drive a recording medium past the head, the said drive means being operable to drive the recording medium intermittently in synchronism with the frames of the video signal, the parts of the signal not recorded on the recording medium during the said intermittent recording being n frames long where n is a preselected integer which may only be even.
Claim 13
Dependent Claim
89 words
Apparatus for recording intermittently a video signal, the apparatus having a recording head (5a,5b) operable to record a video signal intermittently on a recording medium (3), and means (13,14,15) to drive a recording medium past the head, the said drive means being operable to drive the recording medium intermittently in synchronism with the frames of the video signal, the parts of the signal not recorded on the recording medium during the said intermittent recording being n frames long where n is a preselected integer which may only be even.
References Cited (Backward Citations)
No citation records indexed.
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