US4947343A
Expired / Lapsed
US
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Document processing system for detecting an overlap in two characters
Assignee: Canon Inc
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Filing: 1989-12-11
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Granted: 1990-08-07
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Expires: 2009-12-11
Abstract
Abstract A document processing system includes a display pattern memory having an address space in one-to-one corresponding with a printable area of a printing unit and a display unit for displaying character pattern dot information stored in the display pattern memory. A superposition determination unit for determining based on a predetermined operation a superposition between a character pattern of a character code read from the character pattern memory and stored in the display pattern memory and a character pattern to be sequentially input while a character print position is designated and an indication unit for indicating the determination result by the superposition determination unit.
Inventors
- 👤 Takashi Amari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:14
CPC Classifications
B; B41; B41J; B41J25/00; B41J25/20; B41J5/00; B41J5/30; B41J5/44
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
A document processing system comprising: a display pattern memory for storing a pattern to be displayed; a display unit for displaying the pattern stored in said display pattern memory; reference character pattern store means for storing a reference character pattern corresponding to the pattern stored in said display pattern memory; read-out reference character pattern store means for storing a reference character pattern corresponding to a display pattern read from said display pattern memory; superposition determination means for determining, based on a predetermined operation and in parallel with development of a pattern in said display pattern memory, whether there is a superposition between reference character patterns read from said reference character pattern store means and written in said read-out reference character pattern store means; and indication means for indicating the determination made by said superposition determination means.
Claim 2
Dependent Claim
136 words
A document processing system comprising: a display pattern memory for storing a pattern to be displayed; a display unit for displaying the pattern stored in said display pattern memory; reference character pattern store means for storing a reference character pattern corresponding to the pattern stored in said display pattern memory; read-out reference character pattern store means for storing a reference character pattern corresponding to a display pattern read from said display pattern memory; superposition determination means for determining, based on a predetermined operation and in parallel with development of a pattern in said display pattern memory, whether there is a superposition between reference character patterns read from said reference character pattern store means and written in said read-out reference character pattern store means; and indication means for indicating the determination made by said superposition determination means.
Claim 3
Dependent Claim
35 words
A document processing system according to claim 1, wherein said indication means distinguishably displays a superposed pattern of patterns displayed on said display unit, in accordance with a determination made by said superposition determination means.
Claim 4
Dependent Claim
31 words
A document processing system according to claim 1, wherein said indication means actuates an alarm when a superposed pattern occurs, in accordance with a determination made by said superposition determination means.
Claim 5
Dependent Claim
132 words
A document processing system according to claim 1, wherein said display pattern memory has an address space in one-to-one correspondence with a printable area of a printing unit, wherein said display unit displays character pattern dot information stored in said display memory pattern, wherein said read-out reference character pattern store means stores a reference character pattern corresponding to the display character pattern read from said display pattern memory at an address corresponding to that of said display pattern memory, and wherein said superposition determination means determines, based on a predetermined operation and in parallel with development of a character pattern in said display pattern memory, whether there is a superposition between reference character patterns read from said reference character pattern store means and written in said read-out reference character pattern store means.
Claim 6
Dependent Claim
36 words
A document processing system according to claim 4, wherein said indication means distinguishably displays a superposed pattern of character patterns displayed on said display unit, in accordance with a determination made by said superposition determination means.
Claim 7
Dependent Claim
84 words
A document processing system comprises: a display pattern memory for storing a pattern to be displayed; a display unit for displaying the pattern stored in said display pattern memory; superposition determination means for determining, based on a predetermined operation, whether there is a superposition between the pattern stored in said display pattern memory, and a character pattern to be sequentially input into said system, while a character print position is designated; and indication means for indicating the determination made by said superposition determination means.
Claim 8
Dependent Claim
84 words
A document processing system comprises: a display pattern memory for storing a pattern to be displayed; a display unit for displaying the pattern stored in said display pattern memory; superposition determination means for determining, based on a predetermined operation, whether there is a superposition between the pattern stored in said display pattern memory, and a character pattern to be sequentially input into said system, while a character print position is designated; and indication means for indicating the determination made by said superposition determination means.
Claim 9
Dependent Claim
35 words
A document processing system according to claim 6, wherein said indication means distinguishably displays a superposed pattern of patterns displayed on said display unit, in accordance with a determination made by said superposition determination means.
Claim 10
Dependent Claim
31 words
A document processing system according to claim 6, wherein said indication means actuates an alarm when a superposed pattern occurs, in accordance with a determination made by said superposition determination means.
Claim 11
Dependent Claim
99 words
A document processing system according to claim 4, wherein said display pattern memory has an address space in one-to-one correspondence with a printable area of a printing unit, wherein said display unit displays character pattern dot information stored in said display pattern memory, and wherein said superposition determination means determines, based on a predetermined operation, whether there is a superposition between a character pattern of a character code read from a character pattern memory and stored in said display pattern memory, and a character pattern to be sequentially input into said system, while a character print position is designated.
Claim 12
Dependent Claim
36 words
A document processing system according to claim 9, wherein said indication means distinguishably displays a superposed pattern of character patterns displayed on said display unit, in accordance with a determination made by said superposition determination means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |