EP0054413A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Combined television camera and recording apparatus
Assignee: RCA Corp
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Filing: 1981-12-10
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Granted: —
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Expires: 2001-12-10
Abstract
Abstract An example of the apparatus is a portable video tape recorder. The transducer (28)-to-tape (130) velocity is controlled by a rotary member such as a capstan, turnable or headwheel (22). Motion of the recorder may cause accelerations or variations in velocity of the headwheel (22) which affect the regular spacing on the tape of sync or timing signals transduced thereto. Regular spacing of sync signals is desirable for good reproduction on playback. Timing or sync signals generated by a signal generating wheel (34) coupled to the headwheel (22) are used to control the application of the video timing signals to the transducer, thereby making the spacing regular. In the combined recorder and camera, the timing signals from the generating wheel (34) control the image scanning (76, 56) in the camera and also the chroma production (65, 58). In another example, video signals are written into a digital memory and read out of it at a rate determined by the timing signals from the generating wheel.
Inventors
- 👤 Robert Adams Dischert
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 23:25
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N5/00; H04N5/76; H04N5/765; H04N5/77; H04N5/772
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
90 words
Apparatus for recording signals on a recording medium, comprising: means for transducing the signals onto the recording medium, means for establishing relative movement between the transducing means and the recording medium, means coupled to the movement establishing means for indicating the actual rate of said relative movement, and means responsive to the indicated actual rate to modify the signals in time prior to being applied to the transducing means so as to place the signals on the recording medium as if said relative movement took place at a predetermined rate.
Claim 2
Dependent Claim
90 words
Apparatus for recording signals on a recording medium, comprising: means for transducing the signals onto the recording medium, means for establishing relative movement between the transducing means and the recording medium, means coupled to the movement establishing means for indicating the actual rate of said relative movement, and means responsive to the indicated actual rate to modify the signals in time prior to being applied to the transducing means so as to place the signals on the recording medium as if said relative movement took place at a predetermined rate.
Claim 3
Dependent Claim
11 words
Apparatus according to claim 1, which is a magnetic tape recorder.
Claim 4
Dependent Claim
39 words
Apparatus according to claim 1 or 2, wherein the movement establishing means comprises means for rotating the transducing means about an axis of rotation so as to establish the relative movement between the recording medium and the transducing means.
Claim 5
Dependent Claim
34 words
Apparatus according to claim 1, 2 or 3 wherein the modifying means comprises means for applying a delay to the signals, which delay is variable in dependence upon the indicated rate of relative movement.
Claim 6
Dependent Claim
13 words
Apparatus according to claim 4, wherein the delay means comprises a digital memory.
Claim 7
Dependent Claim
32 words
Apparatus according to claim 1,2 or 3 wherein the modifying means comprises a phase-locked loop incorporating a controllable oscillator and responsive to the indicated rate of relative movement to control the oscillator.
Claim 8
Dependent Claim
13 words
Apparatus according to any preceding claim, wherein the indicating means comprise a tachometer.
Claim 9
Dependent Claim
11 words
Apparatus according to any proceding claim adapted to record television signals.
Claim 10
Dependent Claim
69 words
A combination of apparatus according to claim 1, 2 or 3 adapted to record television signals and a television camera for generating the signals, wherein the modifying means modifies at least the image scanning in the camera in dependence upon the said indicated rate of relative movement so as to place the television signals on the recording medium as if said relative movement took place at the predetermined rate.
Claim 11
Dependent Claim
72 words
A combination according to claim 9, wherein the camera comprises an image pick-up tube and associated deflection means for deflecting an image scanning beam, the deflection means being responsive to the indicated rate of relative movement to modify the rate of deflection and the timing of the repetition of deflection so as to place the television signals on the recording medium as if said relative movement took place at the predetermined rate.
Claim 12
Dependent Claim
49 words
A combination according to claim 10, wherein said deflection is controlled by a ramp signal having a peak value representing an extreme of said deflection, and further comprising amplitude control means for maintaining said peak value constant in the presence of control of said deflection rate of said camera.
Claim 13
Dependent Claim
15 words
A combination according to claim 11 wherein said amplitude control means comprises controllable current means.
Claim 14
Dependent Claim
20 words
A combination according to claim 12 wherein said controllable current means comprises a field-effect transistor coupled with linear resistance means.
Claim 15
Dependent Claim
56 words
A combination according to any one of claims 9 to 13, further comprising a chroma modulator,a chroma subcarrier oscillator and means responsive to the indicated rate of relative movement to modify the frequency of the chroma subcarrier so as to record the chroma signal as if said relative movement took place at the predetermined rate .
Claim 16
Dependent Claim
76 words
Apparatus or a combination according to any one of claims 1 to 14 adapted to record television signals and wherein the indicating means comprises means coupled to rotate with the said rotating means and carrying indicia, related to at least one of the timing components of television signals, for indicating the placement of the television signals on the tape, and means for producing signals representing the indicia as said indication of the rate of relative movement.
Claim 17
Dependent Claim
115 words
Apparatus for recording television signals on a magnetic tape comprising means for transducing the signals onto the tape, means for rotating the transducing means about an axis to establish a predetermined rate of movement relative to the tape, means having a member coupled to rotate with the transducing means and arranged to produce timing signals for indicating a desired placement of at least components of the television signals on the tape, means responsive to the said timing signals to control the rotation of the transducing means to tend to produce the desired placement, and means responsive to the said timing signals to modify the television signals so as to tend to produce the desired placement.
Claim 18
Dependent Claim
115 words
Apparatus for recording television signals on a magnetic tape comprising means for transducing the signals onto the tape, means for rotating the transducing means about an axis to establish a predetermined rate of movement relative to the tape, means having a member coupled to rotate with the transducing means and arranged to produce timing signals for indicating a desired placement of at least components of the television signals on the tape, means responsive to the said timing signals to control the rotation of the transducing means to tend to produce the desired placement, and means responsive to the said timing signals to modify the television signals so as to tend to produce the desired placement.
References Cited (Backward Citations)
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