US3789386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Restoration system for pattern information using and-type logic of adjacent bits
Assignee: Takachiho Koheki KK
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Filing: 1972-06-30
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Granted: 1974-01-29
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Expires: 1992-06-30
Abstract
Abstract A restoration system is disclosed for restoring omitted dots of dot-typed patterns indicated by an alternate arrangement of black dots and white dots in bilateral scanning lines and vertical scanning lines in which some dots of each of the dot-typed patterns omitted in a pattern generator or in the transmission medium because of noise are restored irrespective of the states of the dots if upper and lower dots and right and left dots adjacent to each of the omitted dots assume predetermined states determined in consideration of the characteristics of the patterns. The dot-typed omitted pattern is temporarily stored in a shift register, and AND logic operations are performed by use of AND circuits to detect the predetermined states.
Inventors
- 👤 T Itoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:03
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/06; G09G1/14; G09G1/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
177 words
A restOration system for restoring omitted dots of dot-typed patterns indicated by an alternate arrangement of black dots and white dots in bilateral scanning lines and vertical scanning lines comprising: memory means comprising a number of bistable memory elements for simultaneously storing one dot of each of the dot typed patterns and at least a right dot, a left dot, an upper dot and a lower dot of said one dot, means connected to said memory means for shifting said dots in said memory means in synchronism with the clock timing of the dot-typed patterns. detection means coupled to said memory means for generating a detected output when the right dot, the left dot, the upper dot and the lower dot assume predetermined states determined in accordance with the characteristics of the dot-typed patterns, and means coupled to said memory means and said detection means for obtaining in the same clock timing as the dot-typed patterns a logical sum of said one dot and said detected output of said detection means so as to provide restored patterns.
Claim 2
Dependent Claim
177 words
A restOration system for restoring omitted dots of dot-typed patterns indicated by an alternate arrangement of black dots and white dots in bilateral scanning lines and vertical scanning lines comprising: memory means comprising a number of bistable memory elements for simultaneously storing one dot of each of the dot typed patterns and at least a right dot, a left dot, an upper dot and a lower dot of said one dot, means connected to said memory means for shifting said dots in said memory means in synchronism with the clock timing of the dot-typed patterns. detection means coupled to said memory means for generating a detected output when the right dot, the left dot, the upper dot and the lower dot assume predetermined states determined in accordance with the characteristics of the dot-typed patterns, and means coupled to said memory means and said detection means for obtaining in the same clock timing as the dot-typed patterns a logical sum of said one dot and said detected output of said detection means so as to provide restored patterns.
Claim 3
Dependent Claim
183 words
A restoration system for restoring omitted dots of dot typed patterns indicated by an alternate arrangement of black dots and white dots in bilateral scanning lines and vertical scanning lines comprising: shift register means comprising a number of bistable memory elements for simultaneously storing one dot of each of the dot typed patterns and at least a right dot, a left dot, an upper dot and a lower dot of said one dot, means connected to said shift register means for shifting said dots in said shift register means in synchronism with the clock timing of the dot-typed patterns, detection means coupled to said shift register means for generating a detected output when the right dot, the left dot, the upper dot and the lower dot assume predetermined states determined in accordance with the characteristics of the dot-typed patterns, and means coupled to said shift register means and said detection means for obtaining in the same clock timing as the dot-typed patterns a logical sum of said one dot and said detected output of said detection means so as to provide restored patterns.
Claim 4
Dependent Claim
183 words
A restoration system for restoring omitted dots of dot typed patterns indicated by an alternate arrangement of black dots and white dots in bilateral scanning lines and vertical scanning lines comprising: shift register means comprising a number of bistable memory elements for simultaneously storing one dot of each of the dot typed patterns and at least a right dot, a left dot, an upper dot and a lower dot of said one dot, means connected to said shift register means for shifting said dots in said shift register means in synchronism with the clock timing of the dot-typed patterns, detection means coupled to said shift register means for generating a detected output when the right dot, the left dot, the upper dot and the lower dot assume predetermined states determined in accordance with the characteristics of the dot-typed patterns, and means coupled to said shift register means and said detection means for obtaining in the same clock timing as the dot-typed patterns a logical sum of said one dot and said detected output of said detection means so as to provide restored patterns.
Claim 5
Dependent Claim
48 words
A restoration system according to claim 2, in which said detection means comprises a first AND circuit for providing a logical product of said right dot and said left dot, and a second AND circuit for providing a logical product of said upper dot and said lower dot.
Claim 6
Dependent Claim
80 words
A restoration system according to claim 2, in which said detection means comprises a first AND circuit for providing a logical product of said right dot and said left dot, a third AND circuit for providing a logical product of said upper dot, said lower dot and one of said right and left dots, and a fourth AND circuit for providing a logical product of said upper dot, said lower dot and the other of said right and left dots.
Claim 7
Dependent Claim
80 words
A restoration system according to claim 2, in which said detection means comprises a second AND circuit for providing a logical product of said upper dot and said lower dot, a fifth AND circuit for providing a logical product of said right dot, said left dot and one of said upper and lower dots, and a sixth AND circuit for providing a logical product of said right dot, said left dot and the other of said upper and lower dots.
Claim 8
Dependent Claim
112 words
A restoration system according to claim 2, in which said detection means comprises a sixth AND circuit for providing a logical product of said right dot, said left dot and the other of said upper and lower dots, a fourth AND circuit for providing a logical product of said upper dot, said lower dot and the other of said right and left dots, a fifth AND circuit for providing a logical product of said right dot, said left dot and one of said upper and lower dots, and a third AND circuit for providing a logical product of said upper dot, said lower dot and one of said right and left dots.
References Cited (Backward Citations)
US3573789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |