US3911484A — Operation control device for multichannel memory …

Claim 1

Independent Claim 278 words

An operation control device for a multichannel memory apparatus comprising: vertical synchronizing pulse separater means for separating vertical synchronizing pulses from a video signal; counter means connected to the vertical synchronizing pulse separater means for generating specified pulses whose repetition rate is lower than that of the vertical synchronizing pulses; a rotatable magnetic member having a plurality of magnetic recording channel tracks; a plurality of channel heads each assigned to a respective one of the plurality of channel tracks of said rotatable magnetic member; a recording-reproducing change-over switch having a movable contact and two stationary contacts, one of the stationary contacts being connected to a recording stage and the other of the stationary contacts being connected to a reproducing stage; head transfer means having a plurality of electrical transmission paths connected between a respective one of said channel heads and the movable contact of the recordingreproducing change-over switch, for controlling the conduction of the plurality of the electrical transmission paths one after another; and auto-manual change-over switching means including an autooperation switch means and a manual-operation switch means which are alternatively rendered operable, said auto-operation switch means, when rendered operable, transmitting therethrough pulses in accordance the specified pulses from the counter means to the head transfer means so that the conduction of the plurality of the electrical transmission paths is controlled in sequence by the pulses, and said manual-operation switch means having a plurality of manually conducting unit switch means each assigned to a respective one of the electrical transmission paths so that when one of the unit switch means is rendered operable while the manual-operation switch means is operable, the corresponding electrical transmission path is rendered conductive.

Claim 2

Dependent Claim 278 words

An operation control device for a multichannel memory apparatus comprising: vertical synchronizing pulse separater means for separating vertical synchronizing pulses from a video signal; counter means connected to the vertical synchronizing pulse separater means for generating specified pulses whose repetition rate is lower than that of the vertical synchronizing pulses; a rotatable magnetic member having a plurality of magnetic recording channel tracks; a plurality of channel heads each assigned to a respective one of the plurality of channel tracks of said rotatable magnetic member; a recording-reproducing change-over switch having a movable contact and two stationary contacts, one of the stationary contacts being connected to a recording stage and the other of the stationary contacts being connected to a reproducing stage; head transfer means having a plurality of electrical transmission paths connected between a respective one of said channel heads and the movable contact of the recordingreproducing change-over switch, for controlling the conduction of the plurality of the electrical transmission paths one after another; and auto-manual change-over switching means including an autooperation switch means and a manual-operation switch means which are alternatively rendered operable, said auto-operation switch means, when rendered operable, transmitting therethrough pulses in accordance the specified pulses from the counter means to the head transfer means so that the conduction of the plurality of the electrical transmission paths is controlled in sequence by the pulses, and said manual-operation switch means having a plurality of manually conducting unit switch means each assigned to a respective one of the electrical transmission paths so that when one of the unit switch means is rendered operable while the manual-operation switch means is operable, the corresponding electrical transmission path is rendered conductive.

Claim 3

Dependent Claim 79 words

An operation control device as defined in claim 1, wherein said counter means includes: frequency divider means connected to said vertical synchronizing pulse separater means for producing a plurality of pulse trains whose repetition rates are different and lower than that of the vertical synchronizing pulses by dividing the repetition rate of the vertical synchronizing pulses at different dividing rates; and select switch means connected to said frequency divider means for selecting one of said plurality of pulse trains.

Claim 4

Dependent Claim 205 words

An operation control device as defined in claim 1, wherein said head transfer means includes: a common pulse transformer having primary and second windings, said primary winding being selectively connected to one of a recording amplifier and a reproducing amplifier, said secondary winding being supplied with a predetermined voltage at the middle point thereof; A plurality of pulse transformers each corresponding to a respective one of said plurality of channel heads, the secondary windings of said plurality of pulse transformers being connected to said plurality of channel heads, respectively; a plurality of diodes connected between the ends of the secondary winding of said common pulse transformer and the ends of the primary windings of said plurality of pulse transformers; a plurality of lamps each connected between the center point of the primary winding of an associated one of said plurality of pulse transformers and a power line; a plurality of transistors each connected between the center point of the primary winding of associated one of said plurality of pulse transformers and ground; and means for supplying the pulses associated with the specified pulses to said plurality of transistors one after another in sequential relation so as to cause sequential conduction of said plurality of transistors.

Claim 5

Dependent Claim 20 words

An operation control device as defined in claim 1, wherein said head transfer means includes a plurality of integrated circuits.

Claim 6

Dependent Claim 86 words

An operation control device as defined in claim 1, wherein said auto-operation switch means includes pulse generator circuit means for generating pulses associated with the specified pulses to said head transfer means, said pulse generating circuit means including an integrating circuit means for integrating pulses associated with the vertical synchronizing pulses of the video signal and transistor circuit means for producing positive clock pulses in response to the negative part of the waveform integrated by said integrating circuit means for application to said head transfer means.

Claim 7

Dependent Claim 56 words

An operation control device as defined in claim 1, wherein said manual-operation switch means includes pulse generator circuit means for producing a clear pulse from a pulse associated with the vertical synchronizing pulse of the video signal and for producing a present pulse which lags behind the clear pulse by the width of the clear pulse.

Claim 8

Dependent Claim 108 words

An operation control device according to claim 6, wherein said pulse generator circuit means includes first differentiating circuit means for differentiating a pulse associated with the vertical synchronizing pulse of the video signal, first transistor circuit means for taking out positive pulses responding to the negative part of the waveform differentiated by said first differentiated by said first differentiating circuit means, circuit means for providing clear pulses in accordance with the positive pulses, second differentiating circuit means for differentiating the positive pulses and a second transistor circuit for taking out positive preset pulses corresponding to the negative part of the waveform differentiated by said second differentiating circuit means.

Claim 9

Dependent Claim 42 words

An operation control device as defined in claim 7, wherein said circuit means for providing clear pulses includes transistor circuit means which is energized to provide clear pulses only when the positive pulses are taken out by said first transistor circuit means.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-10-06	1979-04-07	1979-10-07	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-10-06	1983-04-07	1983-10-07	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-10-06	1987-04-07	1987-10-07	$7700.00	Window Closed / Lapsed

Operation control device for multichannel memory apparatus

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