US4318181A
Expired / Lapsed
US
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Timer display apparatus
Assignee: Sony Corp
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Filing: 1980-01-16
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Granted: 1982-03-02
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Expires: 2000-01-16
Abstract
Abstract A timer display apparatus is disclosed which has a timer time display member, a memory capable of memorizing a plurality of timer times and a discriminating circuit which compares the memorized timer times in the memory with the present or instant time and then discriminates the timer time of the memorized timer times nearest but after the instant time. Then, based upon the output from the discriminating circuit, the timer time nearest but after the instant time is read out from the memory and displayed on the timer time display member.
Inventors
- 👤 Ryuichi Kawakami
- 👤 Kenichi Nakazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:00
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/10; G05B19/102; G05B19/104; G04; G04G; G04G15/00; G04G9/00; G04G9/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
A timer display apparatus, comprising: memory means capable of memorizing a plurality of timer times; discriminating means for comparing a timer time memorized in said memory means with an instant time and discriminating a timer time after but nearest the instant time; timer time display means for displaying a timer time after but nearest an instant time which is read out from said memory means based upon an output from said discriminating means, wherein said discriminating means includes a subtracter circuit which subtracts said plurality of timer time signals read out from said memory means from a clock signal to produce a difference time, a difference time memory capable of memorizing a plurality of difference times, a discriminator circuit for discriminating whether the difference time is positive or negative, and a data register which provides the smallest absolute value between the positive and negative difference times.
Claim 2
Dependent Claim
146 words
A timer display apparatus, comprising: memory means capable of memorizing a plurality of timer times; discriminating means for comparing a timer time memorized in said memory means with an instant time and discriminating a timer time after but nearest the instant time; timer time display means for displaying a timer time after but nearest an instant time which is read out from said memory means based upon an output from said discriminating means, wherein said discriminating means includes a subtracter circuit which subtracts said plurality of timer time signals read out from said memory means from a clock signal to produce a difference time, a difference time memory capable of memorizing a plurality of difference times, a discriminator circuit for discriminating whether the difference time is positive or negative, and a data register which provides the smallest absolute value between the positive and negative difference times.
Claim 3
Dependent Claim
135 words
A timer display apparatus, comprising: memory means capable of memorizing a plurality of timer times; discriminating means for comparing a timer time memorized in said memory means with an instant time and discriminating a timer time after but nearest the instant time; timer time display means for displaying a timer time after but nearest an instant time which is read out from said memory means based upon an output from said discriminating means; wherein said discriminating means includes an operational circuit which reads out said plurality of timer times memorized in said memory means and adds their orders to the read out timer times, a pulse generator which produces a pulse when an instant time coincides with the timer time, and an adder circuit which adds the outputs from said operational circuit and pulse generator.
Claim 4
Dependent Claim
135 words
A timer display apparatus, comprising: memory means capable of memorizing a plurality of timer times; discriminating means for comparing a timer time memorized in said memory means with an instant time and discriminating a timer time after but nearest the instant time; timer time display means for displaying a timer time after but nearest an instant time which is read out from said memory means based upon an output from said discriminating means; wherein said discriminating means includes an operational circuit which reads out said plurality of timer times memorized in said memory means and adds their orders to the read out timer times, a pulse generator which produces a pulse when an instant time coincides with the timer time, and an adder circuit which adds the outputs from said operational circuit and pulse generator.
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) | 1985-03-01 | 1985-08-31 | 1986-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-01 | 1989-08-31 | 1990-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-01 | 1993-08-31 | 1994-03-02 | $7700.00 | Window Closed / Lapsed |