US4415890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Character generator capable of storing character patterns at different addresses
Assignee: Canon Inc
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Filing: 1980-05-23
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Granted: 1983-11-15
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Expires: 2000-05-23
Abstract
Abstract A character generator capable of storing character patterns at different addresses comprises a memory for storing character patterns corresponding to characters. Each of the character patterns includes a plurality of elements and one of the plurality of elements is stored apart from the remainder of the elements in the memory. A signal generator generates signals corresponding to the number of the plurality of elements and an address signal generator generates address signals for obtaining access to each of the character patterns stored in the memory. An address converter gains access to each of the character patterns stored in the memory in accordance with the address signals and the signals generated by the signal generator.
Inventors
- 👤 Sadao Iwakura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:09
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/22; G09G5/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
163 words
A character generator capable of storing character patterns at different addresses, comprising: (a) memory means for storing character patterns corresponding to characters, each of said character patterns including a plurality of elements, an element of each plurality of elements comprising one of said character patterns being stored at a location in said memory means separate and spaced from the location of storage in said memory means of the remainder of said plurality of elements comprising said one of said character patterns; (b) signal generating means for generating signals corresponding to the number of said plurality of elements; (c) address signal generating means for generating address signals for obtaining access to each of said character patterns stored in said memory; and (d) address conversion means for gaining access to each element of each of said character patterns stored in said memory means in accordance with said address signals generated by said address signal generating means and the signals generated by said signal generating means.
Claim 2
Dependent Claim
163 words
A character generator capable of storing character patterns at different addresses, comprising: (a) memory means for storing character patterns corresponding to characters, each of said character patterns including a plurality of elements, an element of each plurality of elements comprising one of said character patterns being stored at a location in said memory means separate and spaced from the location of storage in said memory means of the remainder of said plurality of elements comprising said one of said character patterns; (b) signal generating means for generating signals corresponding to the number of said plurality of elements; (c) address signal generating means for generating address signals for obtaining access to each of said character patterns stored in said memory; and (d) address conversion means for gaining access to each element of each of said character patterns stored in said memory means in accordance with said address signals generated by said address signal generating means and the signals generated by said signal generating means.
Claim 3
Dependent Claim
34 words
A character generator as set forth in claim 1, wherein said address conversion means comprises arranging means for combining a portion of said address signals with said signals generated by said signal generating means.
Claim 4
Dependent Claim
16 words
A character generator as set forth in claim 2 wherein said arranging means comprises logic means.
Claim 5
Dependent Claim
19 words
A character generator as set forth in claim 1 or 2, wherein said signal generating means comprises counter means.
Claim 6
Dependent Claim
40 words
A character generator as set forth in claim 2, wherein said arranging means includes a circuit for combining more significant plural bits and less significant plural bits of said address signals with said signals generated by said signal generating means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |