US4712072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timer apparatus
Assignee: Canon Inc
•
Filing: 1985-10-28
•
Granted: 1987-12-08
•
Expires: 2005-10-28
Abstract
Abstract A timer apparatus which can simultaneously process a plurality of timer service requests of a plurality of control units by a single timer. This timer apparatus includes a timer for counting a clock pulse, a circuit for setting different times having a constant period from different termials and an output circuit for outputting a signal to the terminal at which the time was set from the corresponding terminal when the time coincides with a time signal output from the timer.
Inventors
- 👤 Tetsuya Kawanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:29
CPC Classifications
G; G04; G04G; G04G15/00; G04G15/006
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
A timer apparatus comprising: a plurality of control means for requesting timer services; data selecting and comparing means coupled to said plurality of control means which upon receiving control means requests, compares them and priortizes the timer services according to an ordered hierarchy of time determined from said plurality of control means and provides a data output and a first control signal, respectively; timer means for providing timing data according to a time period; comparator means for comparing data from said selecting and comparing means and providing a second control signal with data from said timer means; and output means for outputting a signal to respective control means to execute control means services upon coincidence of the first and second control signals from said comparator means and said data selecting and comparing means, respectively.
Claim 2
Dependent Claim
134 words
A timer apparatus comprising: a plurality of control means for requesting timer services; data selecting and comparing means coupled to said plurality of control means which upon receiving control means requests, compares them and priortizes the timer services according to an ordered hierarchy of time determined from said plurality of control means and provides a data output and a first control signal, respectively; timer means for providing timing data according to a time period; comparator means for comparing data from said selecting and comparing means and providing a second control signal with data from said timer means; and output means for outputting a signal to respective control means to execute control means services upon coincidence of the first and second control signals from said comparator means and said data selecting and comparing means, respectively.
Claim 3
Dependent Claim
19 words
A timer apparatus according to claim 1, wherein said timer means has a counter for counting a clock pulse.
Claim 4
Dependent Claim
144 words
A timer apparatus comprising: a plurality of control means for requesting different hour timer services; data selecting and comparing means coupled to said plurality of control means which upon receiving control means requests, compares them and priortizes the timer services according to an ordered hierarchy of hours of the day determined from said plurality of control means and provides a data output and a first control signal, respectively; timer means for providing timing data according to the hour of the day; comparator means for comparing the data from said data selecting and comparing means with the data from said timer means and providing a second control signal; and output means for outputting a signal to respective control means to execute control means service upon coincidence of the first and second control signals from said comparator means and said data selecting and comparing means, respectively.
Claim 5
Dependent Claim
144 words
A timer apparatus comprising: a plurality of control means for requesting different hour timer services; data selecting and comparing means coupled to said plurality of control means which upon receiving control means requests, compares them and priortizes the timer services according to an ordered hierarchy of hours of the day determined from said plurality of control means and provides a data output and a first control signal, respectively; timer means for providing timing data according to the hour of the day; comparator means for comparing the data from said data selecting and comparing means with the data from said timer means and providing a second control signal; and output means for outputting a signal to respective control means to execute control means service upon coincidence of the first and second control signals from said comparator means and said data selecting and comparing means, respectively.
Claim 6
Dependent Claim
33 words
A timer apparatus according to claim 3, wherein said timer means has a counter for counting a clock pulse, wherein the time of day is determined as a function of the clock pulse.
Claim 7
Dependent Claim
15 words
A timer apparatus according to claim 4, wherein said clock pulse has a constant period.
References Cited (Backward Citations)
US3657571A
Cited
US3909620A
Cited
US4068179A
Cited
US4081754A
Cited
US4127823A
Cited
US4206612A
Cited
US4168525A
Cited
US4390965A
Cited
US4429278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |