US4389641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alphanumeric display
Assignee: Sharp Corp
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Filing: 1981-06-11
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Granted: 1983-06-21
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Expires: 2001-06-11
Abstract
Abstract A display device capable of selectively displaying numerical information or character information. During the mode wherein mainly characters are processed, a specific symbol (for example, a cursor symbol) is shifted digit by digit upon each actuation of a specific key (for example, a cursor key) and a character corresponding to the symbol display is also shifted. During the mode where numeral information is processed, on the other hand, numeral information or character information associated with said numeral information is selectively displayed upon actuation of the above specific key.
Inventors
- 👤 Yasuhiro Nakanishi
- 👤 Yoshiyuki Fujikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:17
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/04; G06; G06F; G06F15/00; G06F15/02; G06F15/0225
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
73 words
A display device capable of displaying selectively numerical information or character information on a display panel, said display device comprising: means for sensing if a specific cursor symbol moving along information now on said display panel upon depression of a specific key reaches an information display section of a predetermined digit length; and means for displaying selectively said character information or said numerical information in response to the output of said sensing means.
Claim 2
Dependent Claim
73 words
A display device capable of displaying selectively numerical information or character information on a display panel, said display device comprising: means for sensing if a specific cursor symbol moving along information now on said display panel upon depression of a specific key reaches an information display section of a predetermined digit length; and means for displaying selectively said character information or said numerical information in response to the output of said sensing means.
Claim 3
Dependent Claim
15 words
A display devide according to claim 1 wherein said specific key is a cursor key.
References Cited (Backward Citations)
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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) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |