US3812285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television channel indicator
Assignee: Sharp Corp
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Filing: 1973-03-02
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Granted: 1974-05-21
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Expires: 1993-03-02
Abstract
Abstract In the television receiver implementations the transmitted video signals are received and then reproduced to form pictures in a cathode ray tube in accordance with the video signals. The previously produced channel character signals indicative of the selected channel numbers are used as substitutes for the video signals to enable channel indication in the same cathode ray tube. In order to accomplish the channel indication, the channel position signals are first produced in a channel selector mechanism and then the channel character signals are produced based upon the produced channel position signals by the vertical and horizontal signals necessarily formed on the receiver circuit arrangement.
Inventors
- 👤 E Miyata
- 👤 S Kamuro
- 👤 K Sano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:34
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/445; H04N5/45
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
106 words
A channel indicator in a television receiver tunable to a plurality of channels comprising; a tuning mechanism for tuning the receiver to any one of the channels; a channel character generator for providing a channel character signal in accordance with the turned channel; a receiver circuit arrangement for receiving and amplifying transmitted video signals; a cathode ray tube for projecting a picture in accordance with the received video signals; a connection between the channel character generator and the cathode ray tube for supplying the channel character signal to the cathode ray tube thereby indicating the channel character of the tuned channel in the cathode ray tube.
Claim 2
Dependent Claim
106 words
A channel indicator in a television receiver tunable to a plurality of channels comprising; a tuning mechanism for tuning the receiver to any one of the channels; a channel character generator for providing a channel character signal in accordance with the turned channel; a receiver circuit arrangement for receiving and amplifying transmitted video signals; a cathode ray tube for projecting a picture in accordance with the received video signals; a connection between the channel character generator and the cathode ray tube for supplying the channel character signal to the cathode ray tube thereby indicating the channel character of the tuned channel in the cathode ray tube.
Claim 3
Dependent Claim
32 words
A channel indicator as defined in claim 1 wherein means is provided for composing the channel character signal to the video signal, the composed signal being supplied to the cathode ray tube.
Claim 4
Dependent Claim
34 words
A channel indicator as defined in claim 1 wherein means is provided for substituting the channel character signal for the video signal, only the channel character signal being supplied to the cathode ray tube.
Claim 5
Dependent Claim
44 words
A channel indicator as defined in claim 1 wherein the channel character signals indicative of the tuned channels are provided for all of the tunable channels, each channel character signal comprising a combination of segment signals defined by both horizontal and vertical position signals.
Claim 6
Dependent Claim
126 words
A channel indicator in a television receiver tunable to a plurality of channels comprising; a tuning mechanism for tuning the receiver to any one of the channels; a receiver circuit arrangement for receiving and amplifying transmitted video signals; a picture tube for vidually projecting a picture in according with the received video signals; a channel character generator for providing channel character signals for all of the tunable channels; a channel character selector associated with the tuning mechanism for selecting one of the channel character signals corresponding to the tuned channel; a connection between the channel character selector and the picture tube for supplying the selected one channel character signal to the picture tube thereby indicating the channel character of the tuned channel in the picture tube.
Claim 7
Dependent Claim
126 words
A channel indicator in a television receiver tunable to a plurality of channels comprising; a tuning mechanism for tuning the receiver to any one of the channels; a receiver circuit arrangement for receiving and amplifying transmitted video signals; a picture tube for vidually projecting a picture in according with the received video signals; a channel character generator for providing channel character signals for all of the tunable channels; a channel character selector associated with the tuning mechanism for selecting one of the channel character signals corresponding to the tuned channel; a connection between the channel character selector and the picture tube for supplying the selected one channel character signal to the picture tube thereby indicating the channel character of the tuned channel in the picture tube.
Claim 8
Dependent Claim
49 words
A channel indicator as defined in claim 1 which further comprises horizontal and vertical signal generators associated with the cathode ray tube and the channel character generator being responsive to the horizontal and vertical signals to enable the channel character indication about the center of the tube front face.
Claim 9
Dependent Claim
37 words
A channel indicator as defined in claim 1 which further comprises an indication time setting circuit for enabling the channel character indication in the cathode ray tube during a predetermined time period following operator''s mannual channel selection.
Claim 10
Dependent Claim
31 words
A channel indicator as defined in claim 7 wherein the indication time setting circuit contains a one-shot multivibrator for providing an indication instruction signal every channel switch-over in the tuning mechanism.
Claim 11
Dependent Claim
36 words
A channel indicator as defined in claim 7 wherein the indication time setting circuit cOntains a Schmitt circuit and a charge-and-discharge circuit connected with the input of the Schmitt circuit for providing an indication instruction signal.
Claim 12
Dependent Claim
124 words
A channel indicator in a television receiver tunable to a plurality of VHF channels and a limited number of UHF channels comprising; a tuning mechanism for tuning the receiver to any one of the VHF and UHF channels; a channel character generator for providing channel number signals indicative of the tuned VHF or UHF channel and an UHF symbol signal indicative of the UHF channel selection; a receiver circuit arrangement for receiving and amplifying transmitted video signals; a connection between the channel character generator and the cathode ray tube for supplying the VHF or UHF channel number signals and/or the UHF symbol signal to the cathode ray tube thereby indicating the channel numbers of the VHF and UHF channels in the cathode ray tube.
Claim 13
Dependent Claim
124 words
A channel indicator in a television receiver tunable to a plurality of VHF channels and a limited number of UHF channels comprising; a tuning mechanism for tuning the receiver to any one of the VHF and UHF channels; a channel character generator for providing channel number signals indicative of the tuned VHF or UHF channel and an UHF symbol signal indicative of the UHF channel selection; a receiver circuit arrangement for receiving and amplifying transmitted video signals; a connection between the channel character generator and the cathode ray tube for supplying the VHF or UHF channel number signals and/or the UHF symbol signal to the cathode ray tube thereby indicating the channel numbers of the VHF and UHF channels in the cathode ray tube.
Claim 14
Dependent Claim
42 words
A channel indicator as defined in claim 5 wherein the channel character selector comprises an encoder circuit for encoding the one selected channel signal into binary coded signals and a decoder circuit for decoding the coded signals into the channel character signals.
Claim 15
Dependent Claim
51 words
A channel indicator as defined in claim 5 wherein the channel character generator comprises a first counter for providing a plurality of horizontal unit signals and a second counter for providing a plurality of vertical unit signals, each channel character signal being composed of a combination of both the unit signals.
Claim 16
Dependent Claim
40 words
A channel indicator as defined in claim 1 which further comprises means for sensing any horizontal or vertical synchronizing signal occurred in the receiver and means for inhibiting the operation of the channel character generator when sensing no synchronizing signals.
Claim 17
Dependent Claim
34 words
A channel indicator as defined in claim 13 wherein the inhibition means comprises a flip-flop of RSS type receiving as set inputs the horizontal synchronizing signals and receiving as reset inputs the vertical signals.
Claim 18
Dependent Claim
26 words
A channel indicator as defined in claim 1 wherein the channel character generator provides slanting channel character signals relative to the horizontal and vertical scanning lines.
Claim 19
Dependent Claim
35 words
A channel indicator as defined in claim 15 wherein the slanting channel character generator comprises integration circuits associated with horizontal and vertical scanning lines respectively and a comparison circuit connected with both the integration circuits.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |