US4698776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording/reproducing apparatus
Assignee: Trio KK
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Filing: 1984-05-23
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Granted: 1987-10-06
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Expires: 2004-05-23
Abstract
Abstract There is provided an apparatus which automatically records and reproduces. The digital signal based on the acoustic signal is stored in memory means due to the operation of write control means in response to the recording instruction. When the recording is not instructed, the digital signal stored is read out due to the operation of readout control means, and the acoustic signal is reproduced from this digital signal.
Inventors
- 👤 Izumi Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:16
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/06; G10; G10L; G10L19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
Speech recording/reproducing apparatus comprising: A/D converter means for converting an input analog speech signal into a digital signal; a read/write semiconductor digital memory for storing the digital signal from said A/D converter means; D/A converter means for converting digital signal read out from said memory to reproduce the speech signal; detection means for detecting that the input analog speech signal exists; and control means in response to the output of said detection means for writing the digital signal into said memory while the input analog speech signal exists until the store capacity of said memory is filled up, and for starting read-out of the digital signal from said memory with detection of the termination of the input analog speech signal.
Claim 2
Dependent Claim
120 words
Speech recording/reproducing apparatus comprising: A/D converter means for converting an input analog speech signal into a digital signal; a read/write semiconductor digital memory for storing the digital signal from said A/D converter means; D/A converter means for converting digital signal read out from said memory to reproduce the speech signal; detection means for detecting that the input analog speech signal exists; and control means in response to the output of said detection means for writing the digital signal into said memory while the input analog speech signal exists until the store capacity of said memory is filled up, and for starting read-out of the digital signal from said memory with detection of the termination of the input analog speech signal.
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) | 1990-10-05 | 1991-04-06 | 1991-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-05 | 1995-04-06 | 1995-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-05 | 1999-04-06 | 1999-10-06 | $7700.00 | Window Closed / Lapsed |