US3647985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tone-actuated dictation systems with voice buffer option
Assignee: International Business Machines Corp
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Filing: 1970-06-22
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Granted: 1972-03-07
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Expires: 1990-06-22
Abstract
Abstract The invention concerns dictation systems having facilities for selectively connecting remote stations to a central recording unit, and recognizing control tones generated at a connected remote station to effect all operations required including recording and playback of audio (voice) signals. The systems include, in several versions, circuits responsive to presence or absence of voice signals to start and stop the recording unit (respectively), an intermediate voice buffer to prevent loss of voice signals during startup time and features circuitry to insure that control tones are recognized properly, but not recorded on the media in the central recording unit.
Inventors
- 👤 Matthew P Langendorf
- 👤 Charles L Ridings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:38
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
A dictating system comprising: a remote station; a voice buffer unit; a recorder unit accommodating a record medium, said recorder unit being operable in a number of modes, including a Record mode; terminal connector means associated with said station and said units according to a standardized connecting pattern for selectively (1) connecting said station solely to said recorder unit to form a first system configuration and (2) connecting said voice buffer unit intermediate said station and said recorder unit to form a second system configuration; tone signal generating adjuncts at said remote station; tone-responsive circuits in said recorder unit for recognizing generated tones and controlling operation of said recorder unit; means in said recorder unit for recording generated tone signals on said record medium when said system is connected in said first configuration and said recorder unit is in a Record mode; status means providing control signals indicative of the configuration status of said system; first means automatically conditioned by said status means and operable only when said system is connected in said first configuration to process said medium in order to eliminate any recorded tone signal, and second means automatically conditioned by said status means and operable only when said system is connected in said second system configuration with said voice buffer unit to inhibit recording of any generated tones on said medium.
Claim 2
Dependent Claim
224 words
A dictating system comprising: a remote station; a voice buffer unit; a recorder unit accommodating a record medium, said recorder unit being operable in a number of modes, including a Record mode; terminal connector means associated with said station and said units according to a standardized connecting pattern for selectively (1) connecting said station solely to said recorder unit to form a first system configuration and (2) connecting said voice buffer unit intermediate said station and said recorder unit to form a second system configuration; tone signal generating adjuncts at said remote station; tone-responsive circuits in said recorder unit for recognizing generated tones and controlling operation of said recorder unit; means in said recorder unit for recording generated tone signals on said record medium when said system is connected in said first configuration and said recorder unit is in a Record mode; status means providing control signals indicative of the configuration status of said system; first means automatically conditioned by said status means and operable only when said system is connected in said first configuration to process said medium in order to eliminate any recorded tone signal, and second means automatically conditioned by said status means and operable only when said system is connected in said second system configuration with said voice buffer unit to inhibit recording of any generated tones on said medium.
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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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |