US4789255A
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Correction buffer
Assignee: IBM Information Products Corp
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Filing: 1987-05-26
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Granted: 1988-12-06
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Expires: 2007-05-26
Abstract
Abstract A correction buffer for a typing system in which the correction buffer has a group of records, each record corresponding to an incremental distance on the medium which is printed upon. The records in the correction buffer contain information concerning characters entered through a keyboard by a typist including designations of entered characters and character attributes.
Inventors
- 👤 Douglas E. Hays
- 👤 James F. Lederer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:20
CPC Classifications
G; G06; G06F; G06F40/00; G06F40/10; G06F40/166
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
90 words
In a system for printing characters on a print medium in response to the input of character information from an input device, including a correct ion buffer for storing character information from the input device in the form of character codes, the improvement comprising: a correction buffer having a group of records, each record being capable for storing a different character code and each record corresponding to an incremental distance on the print medium such that a character on the print medium spans a distance greater than said incremental distance.
Claim 2
Dependent Claim
90 words
In a system for printing characters on a print medium in response to the input of character information from an input device, including a correct ion buffer for storing character information from the input device in the form of character codes, the improvement comprising: a correction buffer having a group of records, each record being capable for storing a different character code and each record corresponding to an incremental distance on the print medium such that a character on the print medium spans a distance greater than said incremental distance.
Claim 3
Dependent Claim
23 words
The improvement of claim 1 in which the system for printing characters is responsive to the input of character information from a keyboard.
Claim 4
Dependent Claim
49 words
The improvement of claim 1 in which the records in the correction buffer are substantially identical, with each record corresponding to the same incremental distance on the print medium and in which a character on the print medium spans a distance equal to a plurality of said incremental distance.
Claim 5
Dependent Claim
83 words
In a system for printing characters on a print medium in response to the input of character information from an input device, including a correction buffer for storing character information from the input device, the improvement comprising: a correction buffer having a group of records, each record corresponding to an incremental distance on the print medium and each record in the group of correction buffer records having a first portion for storing graphic character information and a second portion for storing attribute information.
Claim 6
Dependent Claim
83 words
In a system for printing characters on a print medium in response to the input of character information from an input device, including a correction buffer for storing character information from the input device, the improvement comprising: a correction buffer having a group of records, each record corresponding to an incremental distance on the print medium and each record in the group of correction buffer records having a first portion for storing graphic character information and a second portion for storing attribute information.
Claim 7
Dependent Claim
143 words
In a typing system having a keyboard, a print mechanism, and a display, a control system for processing keystrokes entered through the keyboard to display characters on the display and to print characters on a print medium at the print mechanism, the control system comprising: means for defining a correction buffer having a group of identical record locations, each being capable of storing a different keystroke and each corresponding to an incremental distance on the print medium such that a character on the print median spans a distance greater than said incremental distance; means for entering character information in the record locations in the correction buffer in response to the entry of keystrokes through the keyboard; and means for displaying characters on the display in locations which are related to the correction buffer record locations for character information corresponding to the characters displayed.
Claim 8
Dependent Claim
143 words
In a typing system having a keyboard, a print mechanism, and a display, a control system for processing keystrokes entered through the keyboard to display characters on the display and to print characters on a print medium at the print mechanism, the control system comprising: means for defining a correction buffer having a group of identical record locations, each being capable of storing a different keystroke and each corresponding to an incremental distance on the print medium such that a character on the print median spans a distance greater than said incremental distance; means for entering character information in the record locations in the correction buffer in response to the entry of keystrokes through the keyboard; and means for displaying characters on the display in locations which are related to the correction buffer record locations for character information corresponding to the characters displayed.
Claim 9
Dependent Claim
114 words
In a system for printing characters on a print medium in response to the input of character information from an input device, a method for storing character information from the input device in the form of character codes comprising the steps of: defining a correction buffer having a group of identical record locations, each being capable of storing a different character code and each corresponding to an incremental distance on the print medium such that a character on the print medium spans a distance greater than said incremental distance; and entering character code information in the record locations in the correction buffer in response to the input of character information from the input device.
Claim 10
Dependent Claim
114 words
In a system for printing characters on a print medium in response to the input of character information from an input device, a method for storing character information from the input device in the form of character codes comprising the steps of: defining a correction buffer having a group of identical record locations, each being capable of storing a different character code and each corresponding to an incremental distance on the print medium such that a character on the print medium spans a distance greater than said incremental distance; and entering character code information in the record locations in the correction buffer in response to the input of character information from the input device.
Claim 11
Dependent Claim
41 words
The method of claim 6 in which the input device is a keyboard and in which the step of entering character information in the record locations in the correction buffer is in response to the entry of keystrokes through the keyboard.
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) | 1991-12-06 | 1992-06-06 | 1992-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-06 | 1996-06-06 | 1996-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-06 | 2000-06-06 | 2000-12-06 | $7700.00 | Window Closed / Lapsed |