US3930266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for a recording/reproducing apparatus
Assignee: Individual
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Filing: 1974-01-24
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Granted: 1975-12-30
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Expires: 1994-01-24
Abstract
Abstract In order to condition the recording/reproducing apparatus for forward playback, reverse playback, recording and like operations, a plurality of normally open control switches are connected to the set terminals of their respective flip-flop circuits via bias terminals through which a prescribed positive voltage is normally applied to the set terminals. Upon closure of a desired control switch, the adjacent bias terminal is grounded therethrough to introduce the ground potential to the set terminal of the corresponding flip-flop circuit and hence to trigger the same, thereby causing the apparatus to initiate the desired operation. The control system may include an additional control switch adapted to condition the apparatus for a ''''pause, '''' such that upon closure of this control switch during forward recording operation, for example, the flip-flop circuit for the forward motion of the record medium is reset whereas the flipflop circuit for recording operation is held in a set condition. The apparatus is thus held standing by for immediate resumption of recording operation.
Inventors
- 👤 Hiroshi Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:07
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
636 words
In a recording/reproducing apparatus of the type including a record medium which can be caused to run in one and the opposite directions as required, a control system comprising, in combination: a first control switch; a first flip-flop circuit having a set terminal and a reset terminal and an output terminal, said set terminal of said first flip-flop circuit being connected to said first control switch whereby said first flip-flop circuit is triggered when said first control switch is actuated, said first flip-flop circuit comprising: a first NOR circuit having first and second input terminals and an output terminal, said first and second input terminals of said first NOR circuit being connected to said set and reset terminals, respectively, of said first flip-flop circuit; a second NOR circuit having first and second input terminals and an output terminal, said first input terminal of said second NOR circuit being connected to said output terminal of said first NOR circuit, said output terminal of said second NOR circuit being connected to said output terminal of said first flip-flop circuit; and a third NOR circuit having first and second input terminals and an output terminal, said first input terminal of said third NOR circuit being connected to said reset terminal of said first flip-flop circuit, said second input terminal of said third NOR circuit being connected to said output terminal of said second NOR circuit, said output terminal of said third NOR circuit being connected to said second input terminal of said second NOR circuit; means connected to said output terminal of said first flip-flop circuit and adapted to condition the recording/reproducing apparatus for the motion of the record medium in said one direction when said first flip-flop circuit is triggered; a second control switch; a second flip-flop circuit having a set terminal and a reset terminal and an output terminal, said set terminal of said second flip-flop circuit being connected to said second control switch whereby said second flip-flop circuit is triggered when said second control switch is actuated, said second flip-flop circuit comprising: a fourth NOR circuit having first and second input terminals and an output terminal, said first and second input terminals of said fourth NOR circuit being connected to said set and reset terminals, respectively, of said second flip-flop circuit; a fifth NOR circuit having first and second input terminals and an output terminal, said first input terminal of said fifth NOR circuit being connected to said output terminal of said fourth NOR circuit, said output terminal of said fifth NOR circuit being connected to said output termiNal of said second flip-flop circuit; and a sixth NOR circuit having first and second input terminals and an output terminal, said first input terminal of said sixth NOR circuit being connected to said reset terminal of said second flip-flop circuit, said second input terminal of said sixth NOR circuit being connected to said output terminal of said fifth NOR circuit, said output terminal of said sixth NOR circuit being connected to said second input terminal of said fifth NOR circuit; means connected to said output terminal of said second flip-flop circuit and adapted to condition the recording/reproducing apparatus for the motion of the record medium in said opposite direction when said second flip-flop circuit is triggered; a first diode connected between said output terminal of said first NOR circuit of said first flip-flop circuit and said reset terminal of said second flip-flop circuit, said first diode being adapted to reset said second flip-flop circuit when said first flip-flop circuit is triggered; and a second diode connected between said output terminal of said fourth NOR circuit of said second flip-flop circuit and said reset terminal of said first flip-flop circuit, said second diode being adapted to reset said first flip-flop circuit when said second flip-flop circuit is triggered.
Claim 2
Dependent Claim
636 words
In a recording/reproducing apparatus of the type including a record medium which can be caused to run in one and the opposite directions as required, a control system comprising, in combination: a first control switch; a first flip-flop circuit having a set terminal and a reset terminal and an output terminal, said set terminal of said first flip-flop circuit being connected to said first control switch whereby said first flip-flop circuit is triggered when said first control switch is actuated, said first flip-flop circuit comprising: a first NOR circuit having first and second input terminals and an output terminal, said first and second input terminals of said first NOR circuit being connected to said set and reset terminals, respectively, of said first flip-flop circuit; a second NOR circuit having first and second input terminals and an output terminal, said first input terminal of said second NOR circuit being connected to said output terminal of said first NOR circuit, said output terminal of said second NOR circuit being connected to said output terminal of said first flip-flop circuit; and a third NOR circuit having first and second input terminals and an output terminal, said first input terminal of said third NOR circuit being connected to said reset terminal of said first flip-flop circuit, said second input terminal of said third NOR circuit being connected to said output terminal of said second NOR circuit, said output terminal of said third NOR circuit being connected to said second input terminal of said second NOR circuit; means connected to said output terminal of said first flip-flop circuit and adapted to condition the recording/reproducing apparatus for the motion of the record medium in said one direction when said first flip-flop circuit is triggered; a second control switch; a second flip-flop circuit having a set terminal and a reset terminal and an output terminal, said set terminal of said second flip-flop circuit being connected to said second control switch whereby said second flip-flop circuit is triggered when said second control switch is actuated, said second flip-flop circuit comprising: a fourth NOR circuit having first and second input terminals and an output terminal, said first and second input terminals of said fourth NOR circuit being connected to said set and reset terminals, respectively, of said second flip-flop circuit; a fifth NOR circuit having first and second input terminals and an output terminal, said first input terminal of said fifth NOR circuit being connected to said output terminal of said fourth NOR circuit, said output terminal of said fifth NOR circuit being connected to said output termiNal of said second flip-flop circuit; and a sixth NOR circuit having first and second input terminals and an output terminal, said first input terminal of said sixth NOR circuit being connected to said reset terminal of said second flip-flop circuit, said second input terminal of said sixth NOR circuit being connected to said output terminal of said fifth NOR circuit, said output terminal of said sixth NOR circuit being connected to said second input terminal of said fifth NOR circuit; means connected to said output terminal of said second flip-flop circuit and adapted to condition the recording/reproducing apparatus for the motion of the record medium in said opposite direction when said second flip-flop circuit is triggered; a first diode connected between said output terminal of said first NOR circuit of said first flip-flop circuit and said reset terminal of said second flip-flop circuit, said first diode being adapted to reset said second flip-flop circuit when said first flip-flop circuit is triggered; and a second diode connected between said output terminal of said fourth NOR circuit of said second flip-flop circuit and said reset terminal of said first flip-flop circuit, said second diode being adapted to reset said first flip-flop circuit when said second flip-flop circuit is triggered.
References Cited (Backward Citations)
US3347996A
Cited
US3624424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |