US3636246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television signal conversion apparatus
Assignee: EIDOPHER AG
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Filing: 1969-11-21
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Granted: 1972-01-18
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Expires: 1989-11-21
Abstract
Abstract A television signal conversion apparatus for converting one type of television signals into another. More specifically an apparatus for sequentially reproducing simultaneous composite color television signals by using a simultaneous-to-sequential signal converter in the form of a magnetic tape recording and reproducing machine. The magnetic tape is guided in a helical path around two coaxially mounted cylinders. The rotatable magnetic heads for recording the incoming television signals on the tape and for reproducing the recorded signals are mounted on a common rotor, which is coaxially disposed inside the cylinders.
Inventors
- 👤 Werner Steiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:22
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N11/00; H04N11/06; H04N11/20; H04N11/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
254 words
Color television recording and reproducing apparatus comprising: means receiving composite television signals having n video component signals; a rotatable shaft; magnetic recording means; means applying said n video signal components to said magnetic recording means; means mounting said magnetic recording means on said shaft for rotation therewith; a plurality of magnetic reproducing heads; means mounting said magnetic reproducing heads for rotation with the shaft at a position thereon spaced apart from said magnetic recording means, said magnetic reproducing heads being angularly disposed about said shaft by approximately 2 pi /n; a first cylinder having a periphery defining a slot through which said magnetic recording means project flush with the surface of said periphery; a second cylinder coaxially aligned with said first cylinder and having a periphery defining a slot through which said magnetic reproducing heads project flush with the surface of said periphery, said first and second cylinders having respective diameters d and D chosen so that the ratio d:D is approximately equal to 1:n; and guide means on said first and second cylinders arranged to guide magnetic tape in a helical path about said first and second cylinders such that the tape is guided about substantially the entire periphery of said cylinder having the smaller diameter and over at least 1/n of the periphery having the larger diameter whereby the signals recorded by said magnetic recording means on passage of the tape over said first cylinder are reproduced n times by said reproducing heads on passage of the tape over said second cylinder.
Claim 2
Dependent Claim
254 words
Color television recording and reproducing apparatus comprising: means receiving composite television signals having n video component signals; a rotatable shaft; magnetic recording means; means applying said n video signal components to said magnetic recording means; means mounting said magnetic recording means on said shaft for rotation therewith; a plurality of magnetic reproducing heads; means mounting said magnetic reproducing heads for rotation with the shaft at a position thereon spaced apart from said magnetic recording means, said magnetic reproducing heads being angularly disposed about said shaft by approximately 2 pi /n; a first cylinder having a periphery defining a slot through which said magnetic recording means project flush with the surface of said periphery; a second cylinder coaxially aligned with said first cylinder and having a periphery defining a slot through which said magnetic reproducing heads project flush with the surface of said periphery, said first and second cylinders having respective diameters d and D chosen so that the ratio d:D is approximately equal to 1:n; and guide means on said first and second cylinders arranged to guide magnetic tape in a helical path about said first and second cylinders such that the tape is guided about substantially the entire periphery of said cylinder having the smaller diameter and over at least 1/n of the periphery having the larger diameter whereby the signals recorded by said magnetic recording means on passage of the tape over said first cylinder are reproduced n times by said reproducing heads on passage of the tape over said second cylinder.
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1, wherein the mounting means for the magnetic recording means and the magnetic reproducing heads comprises circular discs.
Claim 4
Dependent Claim
110 words
Apparatus according to claim 1 including servo-controlled drive means driving said tape over said cylinders, a fixed magnetic recording head recording on said tape-synchronizing signals derived from the received television signals prior to the passage of the tape over the cylinder of smaller diameter, and a fixed magnetic reproducing head reproducing the recorded synchronizing signals after the tape leaves the cylinder of smaller diameter, said servo controlled drive means being responsive to the synchronizing signals reproduced by said fixed magnetic reproducing head so that during the recording of a synchronizing signal by said fixed magnetic recording head a previously recorded synchronizing signal is reproduced by said fixed magnetic reproducing head.
Claim 5
Dependent Claim
62 words
Apparatus according to claim 1, wherein said magnetic recording means comprises magnetic recording heads, each recording head for recording a signal containing more than one component in a track on the magnetic tape being associated with at least one reproducing head which reproduced from the track in consecutive time intervals as many times as the number of components in the recorded signal.
Claim 6
Dependent Claim
48 words
Apparatus according to claim 4, wherein the number of reproducing heads associated with each track equals the number of components in the recorded signal, each of the reproducing heads reproducing the recorded signal in the track at least once before it is reproduced by the following reproducing head.
Claim 7
Dependent Claim
201 words
Apparatus according to claim 1 for sequentially reproducing simultaneous color television signals comprising n color component signals per frame, including a color component decoding unit responsive to the signals reproduced by said magnetic reproducing heads to provide a Plurality of output signals each containing information of a different one of the colors included in said television signal, a display unit having a light source, a rotatable filter having filter elements corresponding to the colors in said television signal and arranged in front of said light source, an electronic switch coupling the output signals from said decoder to said display unit, and drive means for rotating said rotatable filter wherein said light source is responsive to signals received by the display unit to produce a visual image in accordance with the information contained in the received signal and wherein said drive means and said electronic switch are responsive to synchronizing signals included in said television signal as received by said receiving means to couple an output signal from the decoder to the display unit and position in front of said light source a filter element having a color corresponding to the color represented by the output signal switched to the display unit.
Claim 8
Dependent Claim
74 words
Apparatus according to claim 1, wherein said receiving means includes a decoder dividing the received television signals up into separate signals each containing information of a different one of the components included in said television signal and applying the separated signals to individual ones of said plurality of magnetic recording heads, said apparatus further including a display unit reconstituting the separated component signals reproduced by the magnetic reproducing heads into a composite signal display.
Claim 9
Dependent Claim
117 words
Apparatus according to claim 7 for sequentially reproducing simultaneous color television signals comprising n color component signals per frame, wherein said display unit includes a light source responsive to the signals successively reproduced by said magnetic reproducing heads to produce a visual image in accordance with the information contained in the received signal, a rotatable filter having filter elements corresponding to the colors in the received television signal, means responsive to frame-synchronizing signals in the received television signal to rotate said filter and positioned successively in front of the light source filter elements corresponding in color to the color information contained in the successively reproduced signals as applied from the magnetic reproducing heads to the display unit.
Claim 10
Dependent Claim
57 words
Apparatus as claimed in claim 1, including a motor driving said shaft, means for sensing the speed of rotation of said shaft and the position thereof, and means responsive to frame-synchronizing signals included in the received television signal and the sensing means to control the speed of rotation of the motor and the position of said shaft.
References Cited (Backward Citations)
US3157738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |