US3844397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic underlining in an automated typewriter system
Assignee: REDACTRON CORP
•
Filing: 1973-05-21
•
Granted: 1974-10-29
•
Expires: 1993-05-21
Abstract
Abstract In an automated typewriter system having a memory for sequentially storing bytes generated by operator keystrokes during an input mode an operator generates by a keystroke a start underline control byte which is stored in the memory and thereafter keystrokes in the word (group of symbols) to be underlined. The bytes of this word are stored in sequence following the start underline control byte. The operator then generates by another keystroke an end underline control byte which is stored in the memory. This end underline control byte initiates the automatic sequential reading of the bytes of the memory in the inverse order of entry. After each byte is read the typewriter is automatically backspaced one position. The reading and backspacing continue until the start underline control byte is read. Now the bytes are sequentially read automatically in the original order of entry. After each byte is read one underline symbol is automatically printed. The reading and underline continue until the end underline control byte is read.
Inventors
- 👤 E Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:26
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/26; B41J3/00; B41J3/44; B41J3/50
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
248 words
For use with a typewriter which generates a particular coded combination of signals for each key which is stroked to perform a printing or other operation and which can perform said operations upon receipt of said particular coded combinations of signals, the method of automatically underlining a typed word comprising the steps generating a first given coded combination of signals representing a start underline control byte, storing said start underline control byte, sequentially stroking the keys of the typewriter associated with the word to be underlined, sequentially storing the coded combinations of signals generated by the keystrokings, generating a second given coded combination of signals representing an end underline control byte, storing said end underline control byte, after the storage of said second given coded combinations of signals, generating, in response to the stored coded combination of signals, signals for causing said typewriter to backspace one position for each of the stored coded combinations of signals bracketed between said first and second given coded combinations of signals, generating an alaRm whenever the number of signals for causing backspacing exceeds a number related to the number of keystrokes performed between the generation of the first and second given coded combinations of signals, and, if no alarm is generated, then generating, in response to the stored coded combinations of signals, signals for causing said typewriter to print one underline symbol for each of the stored coded combinations of signals bracketed between said first and second given coded combinations of signals.
Claim 2
Dependent Claim
248 words
For use with a typewriter which generates a particular coded combination of signals for each key which is stroked to perform a printing or other operation and which can perform said operations upon receipt of said particular coded combinations of signals, the method of automatically underlining a typed word comprising the steps generating a first given coded combination of signals representing a start underline control byte, storing said start underline control byte, sequentially stroking the keys of the typewriter associated with the word to be underlined, sequentially storing the coded combinations of signals generated by the keystrokings, generating a second given coded combination of signals representing an end underline control byte, storing said end underline control byte, after the storage of said second given coded combinations of signals, generating, in response to the stored coded combination of signals, signals for causing said typewriter to backspace one position for each of the stored coded combinations of signals bracketed between said first and second given coded combinations of signals, generating an alaRm whenever the number of signals for causing backspacing exceeds a number related to the number of keystrokes performed between the generation of the first and second given coded combinations of signals, and, if no alarm is generated, then generating, in response to the stored coded combinations of signals, signals for causing said typewriter to print one underline symbol for each of the stored coded combinations of signals bracketed between said first and second given coded combinations of signals.
Claim 3
Dependent Claim
83 words
The method of claim 1 wherein the step of generating signals for causing said typewriter to backspace comprises sequentially reading, in the order opposite the order of storing, said sequentially stored coded combinations of signals generated by the keystroking followed by the reading of said stored first given coded combination of signals and generating a signal for causing said typewriter to backspace one position for each of the read coded combinations of signals until said first given coded combination of signals is read.
Claim 4
Dependent Claim
93 words
The method of claim 2 wherein the step of generating signals for causing said typewriter to print underline symbols comprises, after said first given coded combination of signals is read, sequentially reading in the order of the storing said sequentially stored coded combinations of signals generated by the keystroking followed by the reading of said second given coded combination of signals and generating a signal for causing said typewriter to print an underline symbol for each of the reread coded combinations of signals until said second given coded combination of signals is read.
Claim 5
Dependent Claim
25 words
The method of claim 1 wherein said first and second coded combinations of signals are generated by at least stroking different keys of the typewriter.
Claim 6
Dependent Claim
267 words
For use with a typewriter which generates a particular coded combination of signals for each key which is stroked to perform a printing or other operation and which can perform said operations upon receipt of said particular coded combinations of signals, the method of automatically underlining a typed block of characters including at least one space between two characters within the block comprising the steps generating a first given coded combination of signals uniquely representing a start underline control byte, storing said start underline control byte, sequentially stroking the keys of the typewriter associated with the block of characters to be underlined, sequentially storing the coded combinations of signals generated by the keystrokings including a space keystroke, generating a second given coded combination of signals representing an end underline control byte, storing said end underline control byte, after the storage of said second given combinations of signals, generating, in response to the stored coded combination of signals, signals for causing said typewriter to backspace one position for each of the stored coded combinations of signals bracketed between said first and second given coded combinations of signals, generating an alarm whenever the number of signals for causing backspacing exceeds a number related to the number of keystrokes performed between the generation of the first and second given coded combinations of signals, and then if no alarm is generated, generating, in response to the stored coded combinations of signals, signals for causing said typewriter to print one underline symbol for each of the stored coded combinations of signals bracketed between said first and second given coded combinations of signals.
Claim 7
Dependent Claim
267 words
For use with a typewriter which generates a particular coded combination of signals for each key which is stroked to perform a printing or other operation and which can perform said operations upon receipt of said particular coded combinations of signals, the method of automatically underlining a typed block of characters including at least one space between two characters within the block comprising the steps generating a first given coded combination of signals uniquely representing a start underline control byte, storing said start underline control byte, sequentially stroking the keys of the typewriter associated with the block of characters to be underlined, sequentially storing the coded combinations of signals generated by the keystrokings including a space keystroke, generating a second given coded combination of signals representing an end underline control byte, storing said end underline control byte, after the storage of said second given combinations of signals, generating, in response to the stored coded combination of signals, signals for causing said typewriter to backspace one position for each of the stored coded combinations of signals bracketed between said first and second given coded combinations of signals, generating an alarm whenever the number of signals for causing backspacing exceeds a number related to the number of keystrokes performed between the generation of the first and second given coded combinations of signals, and then if no alarm is generated, generating, in response to the stored coded combinations of signals, signals for causing said typewriter to print one underline symbol for each of the stored coded combinations of signals bracketed between said first and second given coded combinations of signals.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |