US3683360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control devices for display apparatus
Assignee: Toshiba Corp
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Filing: 1971-07-01
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Granted: 1972-08-08
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Expires: 1991-07-01
Abstract
Abstract Character data for a plurality of scanned cathode ray tube displays are stored in a recirculating magnetostrictive delay line memory by character lines identified for their particular display tubes. Decoder means continuously gates character data to the appropriate display tubes. The recirculating memory has three feedback circuits - one for the normal memory function, the second having a recirculating delay sufficient for scanning a line of characters, and the third for advancing each character line to the position in the memory previously occupied by a preceding displayed character line. The three feedback circuits are controlled by gating means to give static character line readout for all the display tubes, to delete specified character lines and thereby contract the display and advance the other character lines to new positions on the appropriate display tubes, or to add new character lines and thereby expand the display on the appropriate display tubes.
Inventors
- 👤 Shigenori Matsushita
- 👤 Fumitaka Sato
- 👤 Hisao Chujo
- 👤 Minori Horiike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:42
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G06F3/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
404 words
A control device for display apparatus for controlling the amount of information to be displayed on the display surfaces of at least first and second cathode ray tubes, which comprises a memory device consisting of a magneto-strictive delay line, transducers and write-in and read-out amplifiers; means for successively storing information from its input terminal with first and second head marks representing the first and second cathode ray tubes and the following information to be displayed on the cathode ray tubes in the form of a block divided into a plurality of display lines; first feedback means for feeding back stored information directly from the output teRminal to the input terminal of the memory device; second feed back means for feeding back stored information from the output terminal to the input terminal of the memory device by delaying said information for a length of time equal to that required for one display line to be presented on the display surface; third feedback means for drawing out stored information at a point displaced from the output terminal toward the input terminal of the memory device for a sufficient interval to store information corresponding to one display line to be indicated on the display surface and feeding back said information directly to the input terminal of the memory device; means for visibly displaying on one cathode ray tube a piece of information immediately following the head mark appearing at the output terminal of the memory device; first and second switch means corresponding to said first and second cathode ray tubes so as to generate information display-expanding signals; means for detecting upon the closure of the first or second switch means the head mark of a cathode ray tube expected to display information in succession to that which is already displaying information and rendering the first feedback means inoperable and the second feedback means operable according to the signals thus detected; third and fourth switch means corresponding to said first and second cathode ray tubes so as to generate information display-containing signals; and means for rendering upon the closure of the third or fourth switch means the first feedback means inoperable and the third feedback means operable when there appears at the output terminal of the memory device a piece of information representing a display line to be presented on the display surface of a prescribed cathode ray tube in succession to that which is already displayed thereon.
Claim 2
Dependent Claim
404 words
A control device for display apparatus for controlling the amount of information to be displayed on the display surfaces of at least first and second cathode ray tubes, which comprises a memory device consisting of a magneto-strictive delay line, transducers and write-in and read-out amplifiers; means for successively storing information from its input terminal with first and second head marks representing the first and second cathode ray tubes and the following information to be displayed on the cathode ray tubes in the form of a block divided into a plurality of display lines; first feedback means for feeding back stored information directly from the output teRminal to the input terminal of the memory device; second feed back means for feeding back stored information from the output terminal to the input terminal of the memory device by delaying said information for a length of time equal to that required for one display line to be presented on the display surface; third feedback means for drawing out stored information at a point displaced from the output terminal toward the input terminal of the memory device for a sufficient interval to store information corresponding to one display line to be indicated on the display surface and feeding back said information directly to the input terminal of the memory device; means for visibly displaying on one cathode ray tube a piece of information immediately following the head mark appearing at the output terminal of the memory device; first and second switch means corresponding to said first and second cathode ray tubes so as to generate information display-expanding signals; means for detecting upon the closure of the first or second switch means the head mark of a cathode ray tube expected to display information in succession to that which is already displaying information and rendering the first feedback means inoperable and the second feedback means operable according to the signals thus detected; third and fourth switch means corresponding to said first and second cathode ray tubes so as to generate information display-containing signals; and means for rendering upon the closure of the third or fourth switch means the first feedback means inoperable and the third feedback means operable when there appears at the output terminal of the memory device a piece of information representing a display line to be presented on the display surface of a prescribed cathode ray tube in succession to that which is already displayed thereon.
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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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |