US4301524A
Expired / Lapsed
US
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Programmable alarm clock
Assignee: National Semiconductor Corp
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Filing: 1980-03-12
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Granted: 1981-11-17
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Expires: 2000-03-12
Abstract
Abstract A programmable microcomputer controlled alarm clock has a multi-key input keyboard for setting the time of day, the month and date, and the alarm times of two or more independent alarms. Each alarm may be set to generate an alarm signal at a selected time on each day of two to six consecutive days of a seven-day period, the alarm sequence being automatically repeated each following seven-day period. In the normal operational mode, time of day is displayed until a month-and-date switch, an alarm-period or doze switch, or an alarm-enabling switch is actuated to display the respective date and alarm time. After the particular switch is actuated and the appropriate time information displayed, the clock returns to display time of day within several seconds.
Inventors
- 👤 Ronald L. Koepp
- 👤 Floyd F. Oliver
- 👤 James V. Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:59
CPC Classifications
G; G04; G04G; G04G13/00; G04G13/02; G04G13/026
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
172 words
A programmable clock having: a microcomputer system for storing and processing time-related data and for controlling the display of time-related data; input keyboard means operable in a SET mode for entering time-related data into the microcomputer system, said keyboard means including a plurality of numeric input keys; switching means coupled to the microcomputer system for switching said clock between the SET mode and an operational RUN mode; output display means controlled by the microcomputer system for displaying time-related data thereon; and alarm means controlled by the microcomputer system for generating alarm signals; characterized in that said alarm means include M independently operable alarm circuits, where M is a positive integer greater than one, each alarm circuit operable on a repetitive seven-day basis for generating during a seven-day period according to an alarm-signal sequence an alarm signal at a selected alarm time on each day of N consecutive days of the seven-day period, where N is an integer varying from two through six, the alarm-signal sequence automatically repeatable during each following seven-day period.
Claim 2
Dependent Claim
172 words
A programmable clock having: a microcomputer system for storing and processing time-related data and for controlling the display of time-related data; input keyboard means operable in a SET mode for entering time-related data into the microcomputer system, said keyboard means including a plurality of numeric input keys; switching means coupled to the microcomputer system for switching said clock between the SET mode and an operational RUN mode; output display means controlled by the microcomputer system for displaying time-related data thereon; and alarm means controlled by the microcomputer system for generating alarm signals; characterized in that said alarm means include M independently operable alarm circuits, where M is a positive integer greater than one, each alarm circuit operable on a repetitive seven-day basis for generating during a seven-day period according to an alarm-signal sequence an alarm signal at a selected alarm time on each day of N consecutive days of the seven-day period, where N is an integer varying from two through six, the alarm-signal sequence automatically repeatable during each following seven-day period.
Claim 3
Dependent Claim
76 words
A programmable clock as in claim 1 further characterized in that said keyboard means included M alarm-enabling switches corresponding on a one-to-one basis to said M alarm circuits, the selected alarm time of each alarm circuit enterable during the SET mode by first actuating the corresponding alarm-enabling switch and then actuating selected keys of said input keys, each selected alarm time displayable on said display means by actuating said corresponding alarm-enabling switch during the RUN mode.
Claim 4
Dependent Claim
122 words
A programmable clock as in claim 2 further characterized in that said keyboard means includes a day-selection switch and said display means includes seven individual displays to indicate the seven days of the week respectively, the single day enterable during the SET mode for each alarm circuit by actuating said day-selection switch a specified number of times before entering the selected alarm time and the last N minus one days of the N consecutive days enterable during the SET mode for each alarm circuit by further actuating the day-selection switch N minus one times after entering the selected alarm time, the N consecutive days displayable on said individual displays by actuating the alarm-enabling switch for each alarm circuit during the RUN mode.
Claim 5
Dependent Claim
40 words
A programmable clock as in claim 3 further characterized in that actuation during the SET mode of the day-selection switch after actuation of the alarm-enabling switch for each alarm circuit erases all previous day information associated with that alarm circuit.
Claim 6
Dependent Claim
54 words
A programmable clock as in claim 1 further characterized in that said display means includes M alarm-day displays corresponding on a one-to-one basis to said M alarm circuits, each alarm-day display being actuated on a particular day only if the corresponding alarm circuit is programmed to generate an alarm signal on that particular day.
Claim 7
Dependent Claim
36 words
A programmable clock as in claim 1 further characterized in that said display means includes a plurality of numeric displays which flash on and off in the SET mode to indicate readiness to receive time-related data.
Claim 8
Dependent Claim
28 words
A programmable clock as in claim 1 further characterized in that time of day is entered by actuating selected keys of said input keys during the SET mode.
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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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |