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US4896308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital clock for giving acoustic time-indicating signals at predetermined moments
Assignee: Individual
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Filing: 1989-06-15
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Granted: 1990-01-23
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Expires: 2009-06-15
Abstract
Abstract A digital clock for giving acoustic time-indicating signals having an oscillator, a time integrated circuit driven by the oscillator, a first display element connected to the time integrated circuit to show hour and minute and, a second display element connected to the time integrated circuit to show a day among a week. A minute and a hour decoders are connected to the first display element to convert signals into a form of binary code. A memory unit receives the signals from the minute and hour decoders. A setting circuit has a number of flip-flops and control switches to be connected to inputs of the memory unit to pre-set a moment for giving acoustic time-indicating signals. An acoustic generator and a driving interface are connected to respective outputs of the memory unit and are driven by the memory unit to output the time-indicating signals.
Inventors
- 👤 Huoy J. Hwang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:44
CPC Classifications
G; G04; G04G; G04G13/00; G04G13/02; G04G13/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
216 words
A digital clock for giving acoustic time-indicating signals at predetermined moments comprising an oscillator, a time integrated circuit driven by said oscillator, a first display means connected to said time integrated circuit to show hour and minute and a second display means connected to said time integrated circuit to show a day among a week, two minute and hour decoders connected to said first display means to convert signals therefrom into a digital form, a memory unit for receiving said signals from said minute and hour decoders, and having a plurality of inputs and outputs and a control pin, a setting circuit comprising a plurality of flip-flops and a control switches connected to said inputs of said memory unit to pre-set said moments when said acoustic time-indicating signals are given; an acoustic generator and a driving interface connected to respective outputs of said memory unit and driven by said memory unit to output said time-indicating signals, a switching circuit to respectively connect with an output of said second display means and a control pin of said memory unit to disable said memory unit on a day shown on said second display means, and a plurality of time-setting switches connected to said time integrated circuit to manually adjust time shown on said first and second display means.
Claim 2
Dependent Claim
216 words
A digital clock for giving acoustic time-indicating signals at predetermined moments comprising an oscillator, a time integrated circuit driven by said oscillator, a first display means connected to said time integrated circuit to show hour and minute and a second display means connected to said time integrated circuit to show a day among a week, two minute and hour decoders connected to said first display means to convert signals therefrom into a digital form, a memory unit for receiving said signals from said minute and hour decoders, and having a plurality of inputs and outputs and a control pin, a setting circuit comprising a plurality of flip-flops and a control switches connected to said inputs of said memory unit to pre-set said moments when said acoustic time-indicating signals are given; an acoustic generator and a driving interface connected to respective outputs of said memory unit and driven by said memory unit to output said time-indicating signals, a switching circuit to respectively connect with an output of said second display means and a control pin of said memory unit to disable said memory unit on a day shown on said second display means, and a plurality of time-setting switches connected to said time integrated circuit to manually adjust time shown on said first and second display means.
Claim 3
Dependent Claim
46 words
A digital clock as set forth in claim 1, in which said second display means comprises a counter connected to an output of said time integrated circuit, a plurality of light emitting diodes and a button to adjust said day shown on said second display means.
Claim 4
Dependent Claim
60 words
A digital clock as set forth in claim 1, further comprising a memory selector means having two switches which are provided to connect address buses of said memory unit to enlarge memory storage blocks, a plurality of music software being respectively stored in each said storage block to be output via said acoustic generator when said pre-set moment is reached.
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) | 1993-01-22 | 1993-07-24 | 1994-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-22 | 1997-07-24 | 1998-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-22 | 2001-07-24 | 2002-01-23 | $7700.00 | Window Closed / Lapsed |