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US4322765A Expired / Lapsed US ⏱️ 0.0 years remaining

Tape recorder with display

Assignee: Olympus Corp
•
Filing: 1979-12-27
•
Granted: 1982-03-30
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Expires: 1999-12-27
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Abstract

Abstract In the recorder disclosed, a recorder assembly includes playback and motor control circuits and a signal generating device generates a signal proportional to the amount of tape travel. A counter interprets the signal from the generating device and an electro-optical display arrangement with an indicator displays the value of the signal at the counter. A power source serves for energizing both the assembly and the electro-optical display equipment, while a connecting arrangement connects the electro-optical display equipment to the power source. A tape travel detection circuit detects tape travel in response to the signal generating device. A switching element controlled by the output of the tape travel circuit is located between the assembly and the connecting arrangement so as to maintain the output of the electro-optical display equipment whether or not the recorder assembly is energized.

Inventors

  • 👤 Kenji Furuta

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 10:31
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/11; G11B27/13; G11B27/34

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 119 words
A tape recorder comprising an assembly including playback and motor control circuits; a signal generating device which generates a signal proportional to the amount of tape travel; a counter to interpret the signal from the signal generating device; electro-optical display equipment having an indicator to display the value of the calculation of the counter; a power source for energizing both the assembly and the electro-optical display equipment; connecting means for connecting the electro-optical display equipment to the power source; a tape travel detection circuit which detects tape travel from the signal from the signal generating device; and a switching element controlled by the output of the tape travel detecting circuit and located between the assembly and the connecting means.
Claim 2
Dependent Claim 119 words
A tape recorder comprising an assembly including playback and motor control circuits; a signal generating device which generates a signal proportional to the amount of tape travel; a counter to interpret the signal from the signal generating device; electro-optical display equipment having an indicator to display the value of the calculation of the counter; a power source for energizing both the assembly and the electro-optical display equipment; connecting means for connecting the electro-optical display equipment to the power source; a tape travel detection circuit which detects tape travel from the signal from the signal generating device; and a switching element controlled by the output of the tape travel detecting circuit and located between the assembly and the connecting means.
Claim 3
Dependent Claim 38 words
A tape recorder as set forth in claim 1, wherein a power source switch is connected at said connecting means both between the power source and the assembly, and between the power source and the electro-optical display element.
Claim 4
Dependent Claim 24 words
A tape recorder as set forth in claim 1, wherein a power source switch is inserted between only the assembly and the power source.
Claim 5
Dependent Claim 16 words
A tape recorder as set forth in claim 1, wherein the switching element includes a transistor.

References Cited (Backward Citations)

US3930267A Cited
US3949425A Cited
US3962532A Cited
US4096542A Cited
US4214282A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-03-29 1985-09-28 1986-03-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-03-29 1989-09-28 1990-03-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-03-29 1993-09-28 1994-03-30 $7700.00 Window Closed / Lapsed

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