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US4145753A
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Comparing apparatus for variable length word
Assignee: Casio Computer Co Ltd
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Filing: 1977-10-19
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Granted: 1979-03-20
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Expires: 1997-10-19
Abstract
Abstract A comparing apparatus for comparing variable length word information comprises: first and second memory means for storing record information to be compared, each record information including a plurality of variable length word information arranged in series fashion with intervention of word boundary codes; means for specifying the address of the word information to be compared and for directing whether the specified word information are to be compared truing up the most significant digits or the least significant digits; means for comparing the specified word information in accordance with the direction from the specifying and directing means; and means for reading out the record information from the memory means specified in accordance with the result of the comparison of the comparing means.
Inventors
- 👤 Toshio Kashio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:07
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/02; Y; Y10; Y10S; Y10S707/00; Y10S707/99931; Y10S707/99933; Y10S707/99936
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
A comparing apparatus for comparing the variable length, comprising information: first and second memory means each for storing record information including a plurality of variable length word information arranged in series fashion with intervention of word boundary codes; first means for specifying the address of at least one word in the record information stored in each of said first and second memory means; second means for directing whether the words specified by said first means are to be compared truing up the most significant digits or the least significant digits; third means for reading out the words specified by said first means and for comparing these words in accordance with the direction by said second means; and fourth means for specifying one of said first and second memory means in accordance with the result of the comparison from said third means and for reading out one record information from said memory means specified.
Claim 2
Dependent Claim
153 words
A comparing apparatus for comparing the variable length, comprising information: first and second memory means each for storing record information including a plurality of variable length word information arranged in series fashion with intervention of word boundary codes; first means for specifying the address of at least one word in the record information stored in each of said first and second memory means; second means for directing whether the words specified by said first means are to be compared truing up the most significant digits or the least significant digits; third means for reading out the words specified by said first means and for comparing these words in accordance with the direction by said second means; and fourth means for specifying one of said first and second memory means in accordance with the result of the comparison from said third means and for reading out one record information from said memory means specified.
Claim 3
Dependent Claim
24 words
A comparing apparatus according to claim 1, in which said first memory means and said second memory means each comprise a random access memory.
Claim 4
Dependent Claim
23 words
A comparing apparatus according to claim 1, further including third memory means for storing one record information read out of said fourth means.
Claim 5
Dependent Claim
18 words
A comparing apparatus according to claim 3 in which said third memory means comprises a random access memory.
Claim 6
Dependent Claim
33 words
A comparing apparatus according to claim 1 in which said first means and said second means comprise a program memory device, and means for executing respective programs stored in said program memory device.
References Cited (Backward Citations)
US2865567A
Cited
US3931612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |