US5055928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital video frame recorder with video display test pattern signal generator
Assignee: Sony Electronics Inc
•
Filing: 1990-04-10
•
Granted: 1991-10-08
•
Expires: 2010-04-10
Abstract
Abstract A digital video frame recorder which includes an internal video display test pattern signal generator constructed substantially from already existing circuitry and hardware. A microprocessor and read only memor ("ROM") and/or random access memory ("RAM") used for performing preprogrammed self-diagnostic testing upon the digital video frame recorder are additionally programmed so that the user can selectively enable the internal video display test pattern signal generator. The internally generated video display test pattern signal data is stored within the frame memory in memory locations not normally used for storage of externally sourced video data. The internally generated video display test pattern signal data can be generated by sequentially reading out preprogrammed video display test pattern signal data directly from the ROM or RAM, or by having the microprocessor execute preprogrammed instructions stored in the ROM or RAM and thereby compute the video display test pattern signal data directly.
Inventors
- 👤 Marc Klingelhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:43
CPC Classifications
H; H04; H04N; H04N17/00; H04N17/06; H04N17/04; H04N17/045
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
77 words
An improved digital video signal recorder comprising a digital memory for storing inputted digital video signal data and a microprocessor programmed and coupled to generate and transfer digital test data to and from the digital memory, the improvement comprising: a read only memory coupled to the microprocessor and containing preprogrammed digital video test data representing standard video display test patterns, whereby the microprocessor reads out the digital video test data and transfers it to the digital memory.
Claim 2
Dependent Claim
77 words
An improved digital video signal recorder comprising a digital memory for storing inputted digital video signal data and a microprocessor programmed and coupled to generate and transfer digital test data to and from the digital memory, the improvement comprising: a read only memory coupled to the microprocessor and containing preprogrammed digital video test data representing standard video display test patterns, whereby the microprocessor reads out the digital video test data and transfers it to the digital memory.
Claim 3
Dependent Claim
82 words
An improved digital video signal recorder comprising a digital memory for storing inputted digital video signal data and a microprocessor programmed and coupled to generate and transfer digital test data to and from the digital memory, the improvement comprising: a read only memory coupled to the microprocessor and containing preprogrammed digital data representing instructions for execution by the microprocessor whereby the microprocessor computes, generates and transfers to the digital memory digital video display test pattern data representing standard video display test patterns.
Claim 4
Dependent Claim
82 words
An improved digital video signal recorder comprising a digital memory for storing inputted digital video signal data and a microprocessor programmed and coupled to generate and transfer digital test data to and from the digital memory, the improvement comprising: a read only memory coupled to the microprocessor and containing preprogrammed digital data representing instructions for execution by the microprocessor whereby the microprocessor computes, generates and transfers to the digital memory digital video display test pattern data representing standard video display test patterns.
Claim 5
Dependent Claim
99 words
A digital video signal recorder for recording digital video signal data, the digital video signal recorder comprising: an input video signal data port coupled to receive externally sourced digital input video signal data; video display test pattern signal generator means for programmably generating digital video display test pattern signal data representing predetermined video display test patterns; memory means for storing digital video signal data; and memory addressing means for addressing the memory means for writing and reading the digital input video signal data and digital video display test pattern signal data into and out from the memory means, respectively.
Claim 6
Dependent Claim
99 words
A digital video signal recorder for recording digital video signal data, the digital video signal recorder comprising: an input video signal data port coupled to receive externally sourced digital input video signal data; video display test pattern signal generator means for programmably generating digital video display test pattern signal data representing predetermined video display test patterns; memory means for storing digital video signal data; and memory addressing means for addressing the memory means for writing and reading the digital input video signal data and digital video display test pattern signal data into and out from the memory means, respectively.
Claim 7
Dependent Claim
37 words
A digital video signal recorder as recited in claim 3, wherein the video display test pattern signal generator means comprises a read only memory containing preprogrammed digital video signal data representing the predetermined video display test patterns.
Claim 8
Dependent Claim
50 words
A digital video signal recorder as recited in claim 3, wherein the video display test pattern signal generator means comprises a read only memory containing preprogrammed digital data representing instructions for generating the digital video display test pattern signal data and a microprocessor coupled to receive and execute the instructions.
Claim 9
Dependent Claim
19 words
A digital video signal recorder as recited in claim 3, wherein the memory means comprises a random access memory.
Claim 10
Dependent Claim
25 words
A digital video signal recorder as recited in claim 3, wherein the memory addressing means comprises write and read address pointers and a controller therefor.
Claim 11
Independent Claim
86 words
A method of operating a digital video signal data recorder, comprising the following steps: inputting externally sourced digital video signal data to a digital video signal data recorder having an electronic memory coupled to input and store therein externally sourced digital video signal data; storing the inputted digital video signal data in the electronic memory; internally generating digital video display test pattern data within the digital video signal data recorder; and storing the internally generated digital video display test pattern signal data in the electronic memory.
Claim 12
Independent Claim
86 words
A method of operating a digital video signal data recorder, comprising the following steps: inputting externally sourced digital video signal data to a digital video signal data recorder having an electronic memory coupled to input and store therein externally sourced digital video signal data; storing the inputted digital video signal data in the electronic memory; internally generating digital video display test pattern data within the digital video signal data recorder; and storing the internally generated digital video display test pattern signal data in the electronic memory.
Claim 13
Dependent Claim
46 words
A method of operating a digital video signal data recorder as recited in claim 8, wherein the step of internally generating the digital video display test pattern signal data comprises sequentially reading out preprogrammed digital video display test pattern signal data from a read only memory.
Claim 14
Dependent Claim
46 words
A method of operating a digital video signal data recorder as recited in claim 8, wherein the step of internally generating the digital video display test pattern signal data comprises sequentially reading out preprogrammed digital video display test pattern signal data from a random access memory.
Claim 15
Dependent Claim
57 words
A method of operating a digital video signal data recorder as recited in claim 8, wherein the step of internally generating the digital video display test pattern signal data comprises electronically executing preprogrammed instructions stored in an electronic memory whereby the execution results in the computation and generation of the digital video display test pattern signal data.
Claim 16
Dependent Claim
92 words
A digital video signal recorder for recording digital video signal data, the digital video signal recorder comprising: an input video signal data port coupled to receive externally sourced digital input video signal data; a memory containing preprogrammed digital video signal data representing a predetermined video display test pattern; memory means for storing digital video signal data; and memory addressing means for addressing the memory means for writing and reading into and out from the memory means, respectively, the digital input video signal data and the digital video display test pattern signal data.
Claim 17
Dependent Claim
92 words
A digital video signal recorder for recording digital video signal data, the digital video signal recorder comprising: an input video signal data port coupled to receive externally sourced digital input video signal data; a memory containing preprogrammed digital video signal data representing a predetermined video display test pattern; memory means for storing digital video signal data; and memory addressing means for addressing the memory means for writing and reading into and out from the memory means, respectively, the digital input video signal data and the digital video display test pattern signal data.
Claim 18
Dependent Claim
109 words
A digital video signal recorder for recording digital video signal data, the digital video signal recorder comprising: an input video signal data port coupled to receive externally sourced digital input video signal data; a memory containing preprogrammed digital data representing instructions for generating digital video signal data representing a predetermined video display test pattern; a microprocessor coupled to receive and execute the test pattern instructions; memory means for storing digital video signal data; and memory addressing means for addressing the memory means for writing and reading into and out from the memory means, respectively, the digital input video signal data and the digital video display test pattern signal data.
Claim 19
Dependent Claim
109 words
A digital video signal recorder for recording digital video signal data, the digital video signal recorder comprising: an input video signal data port coupled to receive externally sourced digital input video signal data; a memory containing preprogrammed digital data representing instructions for generating digital video signal data representing a predetermined video display test pattern; a microprocessor coupled to receive and execute the test pattern instructions; memory means for storing digital video signal data; and memory addressing means for addressing the memory means for writing and reading into and out from the memory means, respectively, the digital input video signal data and the digital video display test pattern signal data.
Claim 20
Independent Claim
91 words
A method of operating a digital video signal data recorder, comprising the following steps: inputting externally sourced digital video signal data to a digital video signal data recorder having a display memory coupled to input and store therein externally sourced digital video signal data; storing the inputted digital video signal data in the display memory; reading out preprogrammed digital video signal data representing a predetermined video display test pattern from a test pattern data memory; and storing the read out digital video display test pattern signal data in the display memory.
Claim 21
Independent Claim
91 words
A method of operating a digital video signal data recorder, comprising the following steps: inputting externally sourced digital video signal data to a digital video signal data recorder having a display memory coupled to input and store therein externally sourced digital video signal data; storing the inputted digital video signal data in the display memory; reading out preprogrammed digital video signal data representing a predetermined video display test pattern from a test pattern data memory; and storing the read out digital video display test pattern signal data in the display memory.
Claim 22
Independent Claim
99 words
A method of operating a digital video signal data recorder, comprising the following steps: inputting externally sourced digital video signal data to a digital video signal data recorder having a display memory coupled to input and store therein externally sourced digital video signal data; storing the inputted digital video signal data in the display memory; electronically executing preprogrammed instructions stored in an instructions memory, whereby the execution results in computation and generation of digital video signal data representing a predetermined video display test pattern; and storing the generated digital video display test pattern signal data in the display memory.
Claim 23
Independent Claim
99 words
A method of operating a digital video signal data recorder, comprising the following steps: inputting externally sourced digital video signal data to a digital video signal data recorder having a display memory coupled to input and store therein externally sourced digital video signal data; storing the inputted digital video signal data in the display memory; electronically executing preprogrammed instructions stored in an instructions memory, whereby the execution results in computation and generation of digital video signal data representing a predetermined video display test pattern; and storing the generated digital video display test pattern signal data in the display memory.
References Cited (Backward Citations)
US4425581A
Cited
US4554663A
Cited
US4635096A
Cited
US4772948A
Cited
US4780755A
Cited
US4816897A
Cited
US4893925A
Cited
US4956707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-07 | 1995-04-08 | 1995-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-07 | 1999-04-08 | 1999-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-07 | 2003-04-08 | 2003-10-08 | $7700.00 | Window Closed / Lapsed |