US3828174A
Expired / Lapsed
US
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Numerical data input apparatus
Assignee: Sony Corp
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Filing: 1973-03-05
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Granted: 1974-08-06
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Expires: 1993-03-05
Abstract
Abstract A numerical data input apparatus stores a numerical data signal supplied thereto in a register with a decimal-point fixed at a predetermined place in the register when the input signal is composed of digits all of which can be stored with the position of the decimal-point fixed in the register, but the input signal is stored in the register with its decimal-point shifted automatically from the predetermined place in the register when the input signal is composed of digits some of which would cause an overflow or underflow if the decimal point was kept at the predetermined place in the register.
Inventors
- 👤 T Nakamura
- 👤 Y Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:33
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G06F3/1407; G06F15/00; G06F15/02; G06F3/01; G06F3/02; G06F3/023; G06F3/027
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
138 words
Numerical data input apparatus comprising: an input terminal to receive a numerical data input signal; a register supplied with said numerical data input signal from said input terminal; and control means connected to said register including: means including a decimal point counter for setting a decimal point at a predetermined position in said register, an address counter, and comparing means for comparing the position of a decimal point of the numerical data input signal with said predetermined position of the decimal point in said register, said decimal point counter being responsive to the output of said comparing means and coacting with said address counter for shifting the decimal point in said register from said predetermined position when said register is unable to accommodate the whoe numerical data input signal with the decimal set at said predetermined position therein.
Claim 2
Dependent Claim
138 words
Numerical data input apparatus comprising: an input terminal to receive a numerical data input signal; a register supplied with said numerical data input signal from said input terminal; and control means connected to said register including: means including a decimal point counter for setting a decimal point at a predetermined position in said register, an address counter, and comparing means for comparing the position of a decimal point of the numerical data input signal with said predetermined position of the decimal point in said register, said decimal point counter being responsive to the output of said comparing means and coacting with said address counter for shifting the decimal point in said register from said predetermined position when said register is unable to accommodate the whoe numerical data input signal with the decimal set at said predetermined position therein.
Claim 3
Dependent Claim
214 words
Numerical data input apparatus comprising: an input termiNal to receive a numerical data input signal; a register supplied with said numerical data input signal from said input terminal; and control means connected to said register including: a decimal point counter for setting a decimal point at a predetermined position in said register, an address counter, means responsive to said decimal point counter and said address counter for controlling said register so that the latter stores therein said input signal with said predetermined position of the decimal point when the number of digits below a decimal point in said input signal is not greater that the number of places below said predetermined decimal point in said register, shifting means responsive to said decimal point counter and said address counter for shifting the contents of said register together with the decimal point included therein when the number of the digits below the decimal point in said input signal is greater than the number of the places below said predetermined position of the decimal point in said register, and means responsive to said shifting means for controlling said register so that said register further stores digits of the input signal beyond said number of said places below said predetermined position of the decimal point in the register.
Claim 4
Dependent Claim
214 words
Numerical data input apparatus comprising: an input termiNal to receive a numerical data input signal; a register supplied with said numerical data input signal from said input terminal; and control means connected to said register including: a decimal point counter for setting a decimal point at a predetermined position in said register, an address counter, means responsive to said decimal point counter and said address counter for controlling said register so that the latter stores therein said input signal with said predetermined position of the decimal point when the number of digits below a decimal point in said input signal is not greater that the number of places below said predetermined decimal point in said register, shifting means responsive to said decimal point counter and said address counter for shifting the contents of said register together with the decimal point included therein when the number of the digits below the decimal point in said input signal is greater than the number of the places below said predetermined position of the decimal point in said register, and means responsive to said shifting means for controlling said register so that said register further stores digits of the input signal beyond said number of said places below said predetermined position of the decimal point in the register.
Claim 5
Dependent Claim
217 words
Numerical data input apparatus comprising: an input terminal to receive a numerical data input signal; a register supplied with said numerical data input signal from said input terminal; and control means connected to said register including: means including a decimal point counter for setting a decimal point at a predetermined position in said register; an address counter, means responsive to said decimal point counter and said address counter for controlling said register so that the latter stores said input signal with said predetermined position of the decimal point when the number of digits above a decimal point in said input signal is not greater than the number of places above said predetermined position of the decimal point in said register, shifting means responsive to said decimal point counter and said address counter for shifting the contents of said register together with the decimal point included therein when the number of the digits above the decimal point in said input signal is greater than the number of places above said predetermined position of the decimal point in said register, and means responsive to said shifting means for controlling said register so that said register further stores digits of the input signal beyond said number of said places above said predetermined position of the decimal point in the register.
Claim 6
Dependent Claim
217 words
Numerical data input apparatus comprising: an input terminal to receive a numerical data input signal; a register supplied with said numerical data input signal from said input terminal; and control means connected to said register including: means including a decimal point counter for setting a decimal point at a predetermined position in said register; an address counter, means responsive to said decimal point counter and said address counter for controlling said register so that the latter stores said input signal with said predetermined position of the decimal point when the number of digits above a decimal point in said input signal is not greater than the number of places above said predetermined position of the decimal point in said register, shifting means responsive to said decimal point counter and said address counter for shifting the contents of said register together with the decimal point included therein when the number of the digits above the decimal point in said input signal is greater than the number of places above said predetermined position of the decimal point in said register, and means responsive to said shifting means for controlling said register so that said register further stores digits of the input signal beyond said number of said places above said predetermined position of the decimal point in the register.
Claim 7
Dependent Claim
154 words
Numerical data input apparatus comprising: signal input means including a keyboard for supplying a numerical data input signal in response to the operation of the keyboard; a register; a buffer connected between said signal input means and said register for selectively supplying said numerical data input signal from said signal input means to said register under the control of an address counter; control means connected to said register comprising means for setting a decimal point at a predetermined position in said register; comparing means for comparing the position of a decimal point of the numerical data input signal with said predetermined position of the decimal point in said register; and means responsive to the output of said comparing means for shifting the decimal point in said register from said predetermined position when said register is unable to accommodate the whole numerical data input signal with the decimal point set at said predetermined position therein.
Claim 8
Dependent Claim
154 words
Numerical data input apparatus comprising: signal input means including a keyboard for supplying a numerical data input signal in response to the operation of the keyboard; a register; a buffer connected between said signal input means and said register for selectively supplying said numerical data input signal from said signal input means to said register under the control of an address counter; control means connected to said register comprising means for setting a decimal point at a predetermined position in said register; comparing means for comparing the position of a decimal point of the numerical data input signal with said predetermined position of the decimal point in said register; and means responsive to the output of said comparing means for shifting the decimal point in said register from said predetermined position when said register is unable to accommodate the whole numerical data input signal with the decimal point set at said predetermined position therein.
References Cited (Backward Citations)
US3692990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |