US4769703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for aligning an image display device in a video signal processing and display system
Assignee: RCA Licensing Corp
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Filing: 1987-05-08
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Granted: 1988-09-06
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Expires: 2007-05-08
Abstract
Abstract Apparatus to permit service adjustment of a television receiver includes a microprocessor which normally controls parameters of a video signal processed by the receiver. The microprocessor also automatically establishes a desired video signal reference condition for the service mode when manual service controls are to be adjusted. The service mode is entered by pressing a designated microprocessor keyboard key while plugging the receiver into a source of primary AC power.
Inventors
- 👤 Gary T. Osborne
- 👤 Warren C. DeVilbiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:31
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/66; H04N5/68; H04N17/00; H04N17/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
In a system for processing an image representative video signal, said system subject to exhibiting normal and service operating modes and including a video signal channel for processing said video signal, an image display device responsive to a processed video signal from said video channel, and deflection means associated with said image device for providing horizontal and vertical scanning of said image display device; semi-automatic service adjustment apparatus comprising: manual control means for adjusting an operating parameter of said system in said service operating mode; and automatic control means coupled to said video signal channel for automatically causing said video signal channel to establish a desired video signal reference condition in said service mode to facilitate service adjustment of said system by said manual control means; wherein said automatic control means is a microprocessor otherwise included in said system for controlling parameters of said video signal processed by said video signal channel in said normal operating mode.
Claim 2
Dependent Claim
157 words
In a system for processing an image representative video signal, said system subject to exhibiting normal and service operating modes and including a video signal channel for processing said video signal, an image display device responsive to a processed video signal from said video channel, and deflection means associated with said image device for providing horizontal and vertical scanning of said image display device; semi-automatic service adjustment apparatus comprising: manual control means for adjusting an operating parameter of said system in said service operating mode; and automatic control means coupled to said video signal channel for automatically causing said video signal channel to establish a desired video signal reference condition in said service mode to facilitate service adjustment of said system by said manual control means; wherein said automatic control means is a microprocessor otherwise included in said system for controlling parameters of said video signal processed by said video signal channel in said normal operating mode.
Claim 3
Dependent Claim
210 words
In a system for processing an image representative video signal, said system subject to exhibiting normal and service operating modes and including a video signal channel for processing said video signal, an image display device responsive to a processed video signal from said video channel, and deflection means associated with said image device for providing horizontal and vertical scanning of said image display device; semi-automatic service adjustment apparatus comprising: manual control means for adjusting an operating parameter of said system in said service operating mode; and automatic control means coupled to said video signal channel for automatically causing said video signal channel to establish a desired video signal reference condition in said service mode to facilitate service adjustment of said system by said manual control means; wherein said automatic control means is a microprocessor otherwise included in said system for controlling parameters of said video signal processed by said video signal channel in said normal operating mode; said operating parameter is a bias for said image display device; and said microprocessor in said service mode causes a video signal processed by said video signal channel to exhibit an amplitude and DC level for establishing a black reference image display condition, and defeats said vertical scanning of said image display device.
Claim 4
Dependent Claim
210 words
In a system for processing an image representative video signal, said system subject to exhibiting normal and service operating modes and including a video signal channel for processing said video signal, an image display device responsive to a processed video signal from said video channel, and deflection means associated with said image device for providing horizontal and vertical scanning of said image display device; semi-automatic service adjustment apparatus comprising: manual control means for adjusting an operating parameter of said system in said service operating mode; and automatic control means coupled to said video signal channel for automatically causing said video signal channel to establish a desired video signal reference condition in said service mode to facilitate service adjustment of said system by said manual control means; wherein said automatic control means is a microprocessor otherwise included in said system for controlling parameters of said video signal processed by said video signal channel in said normal operating mode; said operating parameter is a bias for said image display device; and said microprocessor in said service mode causes a video signal processed by said video signal channel to exhibit an amplitude and DC level for establishing a black reference image display condition, and defeats said vertical scanning of said image display device.
Claim 5
Dependent Claim
21 words
Apparatus according to claim 1, wherein said manual control means includes a variable impedance device coupled to said image display device.
Claim 6
Independent Claim
160 words
A method for aligning a television receiver energized from a primary power source and including a video signal channel for processing a video signal; an image display device responsive to a processed video signal from said video channel; adjustable manual control means for adjusting an operating parameter of said receiver in a service mode, and automatic control means, responsive to the setting of associated control keys, coupled to said video signal channel for automatically causing said video signal channel to establish a desired video signal reference condition in said service mode to facilitate service alignment of said receiver, said method comprising the sequential steps of: entering said service mode by (a) disconnecting said receiver from said primary power source; (b) engaging a service key associated with said automatic control means; (c) connecting said receiver to said primary power source; and (d) releasing said service key; and adjusting said manual control means to establish a desired condition of said operating parameter.
Claim 7
Independent Claim
160 words
A method for aligning a television receiver energized from a primary power source and including a video signal channel for processing a video signal; an image display device responsive to a processed video signal from said video channel; adjustable manual control means for adjusting an operating parameter of said receiver in a service mode, and automatic control means, responsive to the setting of associated control keys, coupled to said video signal channel for automatically causing said video signal channel to establish a desired video signal reference condition in said service mode to facilitate service alignment of said receiver, said method comprising the sequential steps of: entering said service mode by (a) disconnecting said receiver from said primary power source; (b) engaging a service key associated with said automatic control means; (c) connecting said receiver to said primary power source; and (d) releasing said service key; and adjusting said manual control means to establish a desired condition of said operating parameter.
References Cited (Backward Citations)
US3816653A
Cited
US4700218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |