US3646544A
Expired / Lapsed
US
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Apparatus for indicating numerical information
Assignee: Tokyo Sanyo Electric Co Ltd
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Filing: 1970-05-05
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Granted: 1972-02-29
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Expires: 1990-05-05
Abstract
Abstract A multidigit decimal number display apparatus comprises a predetermined plurality of numeral display elements corresponding to a plurality of individual digit display positions each capable of selectively indicating a minus sign or any desired Arabic numeral. The apparatus displays the digits of the decimal number on a time-sharing basis in accordance with data identifying the digits of the decimal number and registered in a main circulation shift register. Means are provided for generating a logical state pattern signal identifying the stages of the main register containing data identifying the decimal number. Means responsive to the logical state pattern signal effects cancellation of zeros in all display positions exceeding the most significant digit of the decimal number. Further means responsive to the logical state pattern signal generates an enabling signal identifying the display position immediately preceding the display position for the most significant digit of the decimal number. The enabling signal is also responsive to the state of the decimal number as plus or minus to activate the immediately preceding display position to display a minus sign in accordance with that state. Each display element comprises a plurality of light-emitting segments having a minus-in-square configuration wherein the horizontal middle segment is activated to provide the minus sign indication.
Inventors
- 👤 Hiroshi Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:15
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G06F3/1407; G09; G09F; G09F9/00; G09F9/30; G09F9/307; G09G; G09G3/00; G09G3/04
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
154 words
An apparatus for displaying numerical information comprising: a register for registering data identifying a decimal number to be displayed, display means for displaying said decimal number, said display means having a predetermined plurality of display positions for displaying digits of a decimal number in corresponding predetermined positions and for displaying a sign indication in each of a predetermined plurality of positions respectively related to said digit display positions, means responsive to said data registered in said register for controlling said display means to display the decimal number registered therein, means for generating an enabling signal identifying a display position related to the display position for the most significant digit of the decimal number to be displayed, and means responsive to the state of said decimal number and to said enabling signal for controlling said display means to display a sign indication in a position related to the most significant digit of the decimal number.
Claim 2
Independent Claim
154 words
An apparatus for displaying numerical information comprising: a register for registering data identifying a decimal number to be displayed, display means for displaying said decimal number, said display means having a predetermined plurality of display positions for displaying digits of a decimal number in corresponding predetermined positions and for displaying a sign indication in each of a predetermined plurality of positions respectively related to said digit display positions, means responsive to said data registered in said register for controlling said display means to display the decimal number registered therein, means for generating an enabling signal identifying a display position related to the display position for the most significant digit of the decimal number to be displayed, and means responsive to the state of said decimal number and to said enabling signal for controlling said display means to display a sign indication in a position related to the most significant digit of the decimal number.
Claim 3
Dependent Claim
35 words
An apparatus as recited in claim 1 wherein each of said plurality of display positions of said display means is operable to display selectively an individual digit of a decimal number or a sign indication.
Claim 4
Dependent Claim
45 words
An apparatus as recited in claim 2 wherein said means for generating an enabling signal generates a signal indicative of a digit position which is one digit position more significant than the most significant digit position of the decimal number displayed by said display meaNs.
Claim 5
Dependent Claim
43 words
An apparatus as recited in claim 1 wherein: said display means comprises a plurality of display elements defining said display positions, and each of said display elements is operable to display selectively an individual digit of a decimal number or a sign indication.
Claim 6
Dependent Claim
57 words
An apparatus as recited in claim 4 wherein there is further provided a further display element immediately preceding the most significant digit display element of said display means, said further display element being selectively operable for displaying a sign indication for a decimal number having a most significant digit displayed in said most significant digit display element.
Claim 7
Dependent Claim
36 words
An apparatus as recited in claim 4 wherein each display element comprises a plurality of selectively activated display segments arranged in a configuration for indicating any desired digit in accordance with selective activation of predetermined segments.
Claim 8
Dependent Claim
23 words
An apparatus as recited in claim 6 wherein at least one of said segments may be selectively activated to display a sign indication.
Claim 9
Dependent Claim
27 words
An apparatus as recited in claim 7 wherein said segments are in the form of minus-in-square and a horizontal middle segment is used as a minus sign.
Claim 10
Dependent Claim
27 words
An apparatus as recited in claim 7 wherein said segments are in the form of plus-in-square and a horizontal middle segment is used as a minus sign.
Claim 11
Dependent Claim
23 words
An apparatus as recited in claim 9 wherein a horizontal middle segment and a vertical middle segment are used as a plus sign.
Claim 12
Dependent Claim
24 words
An apparatus as recited in claim 1 wherein said register for data identifying the decimal number to be displayed comprises a circulation shift register.
Claim 13
Dependent Claim
36 words
An apparatus as recited in claim 1 wherein said display means is operable on a time-sharing basis to sequentially and repetitiously display each digit and the sign indication of the decimal number on a time-sharing basis.
Claim 14
Dependent Claim
86 words
An apparatus as recited in claim 1 wherein said display means comprises: a plurality of display elements selectively operable to display corresponding individual digits of the decimal number, a plurality of sign display elements positioned in preceding relationship with respect to corresponding digit display elements, and said means responsive to the state of said decimal number and to said enabling signal is operable to selectively activate the sign display element immediately preceding the digit display element corresponding to the most significant digit of the decimal number.
Claim 15
Dependent Claim
39 words
An apparatus as recited in claim 1 wherein there is further provided means responsive to said register for inhibiting the display of a zero digit in each digit position exceeding the most significant digit of the displayed decimal number.
Claim 16
Dependent Claim
37 words
An apparatus as recited in claim 1 further comprising means for generating a logic state pattern signal identifying digit positions of said register wherein data identifying the digits of the decimal number to be displayed is stored.
Claim 17
Dependent Claim
50 words
An apparatus as recited in claim 15 wherein there is further provided means responsive to said logic state pattern signal for identifying digit positions exceeding the most significant digit position of the decimal number to be displayed and for cancelling the display of a zero digit in those digit positions.
Claim 18
Dependent Claim
41 words
An apparatus as recited in claim 15 wherein said means for generating said enabling signal is responsive to said logic means for generating said logic state pattern signal to identify the display position for the sign indication of the decimal number.
Claim 19
Dependent Claim
24 words
An apparatus as recited in claim 15 wherein there is further provided means for detecting the state of the decimal number to be displayed.
Claim 20
Dependent Claim
27 words
An apparatus as recited in claim 15 further comprising means for delaying said logic state pattern signal by one digit position to identify the sign display position.
Claim 21
Dependent Claim
88 words
An apparatus as recited in claim 15 wherein said means for generating an enabling signal includes: means responsive to said logic state pattern signal to produce a further logic state pattern signal of inverted form and delayed by one display position in time relative thereto, and means for detecting the state of the decimal number to be displayed, said logic state pattern signal defining a logic ''''0'''' in all digit positions of the main register wherein data identifying the digits of the number to be displayed is registered.
Claim 22
Dependent Claim
90 words
An apparatus as recited in claim 16 wherein said means for generating the enabling signal comprises means for logically combining said logic state pattern signal, wherein that signal presents the logic ''''1'''' for each stage of the main register wherein data identifying the numerals to be displayed is stored, a signal comprising said logic state pattern signal in inverted form and delayed by one display position in time, and a signal identifying the state of the decimal number to provide a logic sum of these signals as the enabling signal.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |