US4816937A — Recording and/or reproduction apparatus capable o…

Claim 1

Independent Claim 113 words

A recording and/or reproducing apparatus comprising: (A) head means for recording signals on and/or reproducing signals from a record bearing medium; (B) drive means for relatively rotating said head means and the medium; (C) memory means for storing information corresponding to the load condition on said drive means; (D) holding means for holding said information on a condition of a load to said drive means while said drive means is inoperative; and (E) drive control means for controlling the speed and phase of the relative rotation between said head means and the medium on the basis of the information stored in said memory means at least when said drive means starts to operate.

Claim 2

Dependent Claim 113 words

A recording and/or reproducing apparatus comprising: (A) head means for recording signals on and/or reproducing signals from a record bearing medium; (B) drive means for relatively rotating said head means and the medium; (C) memory means for storing information corresponding to the load condition on said drive means; (D) holding means for holding said information on a condition of a load to said drive means while said drive means is inoperative; and (E) drive control means for controlling the speed and phase of the relative rotation between said head means and the medium on the basis of the information stored in said memory means at least when said drive means starts to operate.

Claim 3

Dependent Claim 103 words

Apparatus according to claim 1, wherein said drive control means includes: rotation control means for controlling the speed and the phase of the relative rotation on the basis of the information stored in said memory means, said rotation control means having a first operation mode for controlling the speed and a second operation mode for controlling the phase; and mode control means for controlling an operation mode of said rotation control means, said mode control means being arranged to shift the operation mode of said rotation control means from the first to the second mode when the relative rotation reaches a predetermined speed.

Claim 4

Dependent Claim 46 words

Apparatus according to claim 2, further comprising switch means operative to cause said drive means to operate; said mode control means being further arranged to set the operation mode of said rotation control means at the first mode in response to operation of said switch means.

Claim 5

Dependent Claim 143 words

Apparatus according to claim 3, wherein said drive means has means for generating a rotation speed signal indicative of the speed of the relative rotation between said head means and the medium; and wherein said rotation control means includes: first means for generating a reference signal for the phase controlling; and second means for controlling the speed and the phase of the relative rotation between said head means and the medium, said second means being arranged to control the speed, in the first mode, on the basis of the information stored in said memory means and the rotation speed signal and to control the phase, in the second mode, on the basis of the information stored in said memory means, the rotation speed signal and the reference signal; said mode control means being arranged to control the operation mode of said second means.

Claim 6

Dependent Claim 32 words

Apparatus according to claim 4, wherein said mode control means is further arranged to operate said first means to generate the reference signal when the relative rotation has reached the predetermined speed.

Claim 7

Dependent Claim 29 words

Apparatus according to claim 5, wherein said mode control means is arranged to operate said first means to generate the reference signal in response to the rotation speed signal.

Claim 8

Dependent Claim 85 words

Apparatus according to claim 4, further comprising: signal processing means for processing an input signal into a recording signal and/or a reproducing signal on the basis of a synchronization signal; and synchronization signal generation means for generating the synchronization signal on the basis of the relative rotation between said head means and the medium; said mode control means being further arranged to operate said synchronization signal generation means to generate the synchronization signal when the rotation speed signal becomes substantially synchronized with the reference signal.

Claim 9

Dependent Claim 28 words

Apparatus according to claim 7, wherein said synchronization signal generation means is arranged to generate the synchronization signal in synchronism with a specific phase of the relative rotation.

Claim 10

Dependent Claim 96 words

Apparatus according to claim 8, wherein said synchronization signal generation means includes: detection means for detecting the specific phase of the relative rotation and for generating a detection signal in response thereto; gate means for selectively passing therethrough the detection signal generated by said detection means; and signal generation circuit means for generating the synchronization signal in response to the detection signal output from said gate means; said mode control means being arranged to cause said gate means to pass the detection signal therethrough when the rotation speed signal is substantially synchronized with the reference signal.

Claim 11

Dependent Claim 54 words

Apparatus according to claim 1, further comprising: signal processing means for processing an input signal into a recording signal and/or a reproducing signal on the basis of a synchronization signal; and synchronization signal generation means for generating the synchronization signal on the basis of the relative rotation between said head means and the medium.

Claim 12

Dependent Claim 28 words

Apparatus according to claim 10, wherein said synchronization signal generation means is arranged to generate the synchronization signal in synchronism with a specific phase of the relative rotation.

Claim 13

Dependent Claim 48 words

Apparatus according to claim 11, wherein said synchronization signal generation means includes: detection means for detecting the specific phase of the relative rotation and for producing a detection signal in response thereto; and signal generation circuit means for producing the synchronization signal in response to the detection signal.

Claim 14

Dependent Claim 34 words

Apparatus according to claim 1, further comprising: first power supply circuit means for supplying power to at least said drive means; and second power supply circuit means for supplying power to said memory means.

Claim 15

Dependent Claim 36 words

Apparatus according to claim 13, wherein said memory means is arranged to store renewed information on the condition of the load on said drive means before said first power supply circuit means terminates the power supply.

Claim 16

Dependent Claim 58 words

Apparatus according to claim 14 wherein said drive control means includes means for producing information on the condition of the load on said drive means during the controlling of said drive means by said drive control means; and wherein said memory means is arranged to store the information produced by said producing means in said drive control means.

Claim 17

Dependent Claim 118 words

A recording and/or reproducing apparatus for use with a magnetic disc comprising: (A) a magnetic head to record signals on and/or to reproduce signals from the disc; (B) a motor arranged to rotate the disc; (C) a memory circuit for storing the information regarding the load condition said motor; (D) holding means for holding said information on a condition of a load to said motor while said motor is inoperative, and (E) a control circuit for controlling said motor, said control circuit including rotation control means for controlling the rotation speed and a rotation phase of the disc on the basis of the information stored in said memory means at least when said motor is started to operate.

Claim 18

Dependent Claim 118 words

A recording and/or reproducing apparatus for use with a magnetic disc comprising: (A) a magnetic head to record signals on and/or to reproduce signals from the disc; (B) a motor arranged to rotate the disc; (C) a memory circuit for storing the information regarding the load condition said motor; (D) holding means for holding said information on a condition of a load to said motor while said motor is inoperative, and (E) a control circuit for controlling said motor, said control circuit including rotation control means for controlling the rotation speed and a rotation phase of the disc on the basis of the information stored in said memory means at least when said motor is started to operate.

Claim 19

Dependent Claim 82 words

Apparatus according to claim 16, wherein said rotation control means has a first operation mode for controlling the speed and a second operation mode for controlling the phase; and wherein said control circuit further includes mode control means for controlling an operation mode for said rotation control means, said mode control means being arranged to shift the operation mode of said rotation control means from the first to the second mode when the rotation of the disc has reached a predetermined speed.

Claim 20

Dependent Claim 40 words

Apparatus according to claim 17, further comprising: a switch operative to cause said motor to operate; said mode control means being further arranged to start said rotation control means from the first mode in response to operation of said switch.

Claim 21

Dependent Claim 54 words

Apparatus according to claim 17 further comprising: a signal processing circuit connected to said head for processing an input signal into a recording signal and/or a reproducing signal on the basis of a synchronization signal; and synchronization signal generation means for generating the synchronization signal on the basis of the rotation of the disc.

Claim 22

Dependent Claim 48 words

Apparatus according to claim 19, wherein said synchronization signal generation means includes: a detection circuit for detecting the rotation phase of the disc and for generating a pulse signal in response thereto; and signal generation circuit means for generating the synchronization signal in response to the pulse signal.

Claim 23

Dependent Claim 41 words

Apparatus according to claim 20, wherein said mode control means is further arranged to cause said signal generation circuit means to respond to the pulse signal when the rotation phase of the disc becomes substantially synchronized with a predetermined phase reference.

Claim 24

Dependent Claim 33 words

Apparatus according to claim 16, further comprising: a first power supply circuit for supplying power to at least said motor; and a second power supply circuit for supplying power to said memory circuit.

Claim 25

Dependent Claim 34 words

Apparatus according to claim 22, wherein said memory circuit is arranged to store renewed information on the condition of the load to said motor before said first power supply circuit terminates the power supply.

Claim 26

Dependent Claim 53 words

Apparatus according to claim 23, wherein said control circuit includes means for producing information on the condition of the load on said motor during the control of said motor by said control circuit; and wherein said memory circuit is arranged to store the information produced by said producing means in said control circuit.

Claim 27

Dependent Claim 68 words

Apparatus comprising: (a) drive means for rotating a rotatable member; (b) memory means for storing information corresponding to the load condition on said drive means, and for maintaining said information after said drive means becomes inoperative; and (c) drive control means for controlling rotating state of said drive means on the basis of the information stored in said memory means at least when said drive means becomes inoperative.

Claim 28

Dependent Claim 68 words

Apparatus comprising: (a) drive means for rotating a rotatable member; (b) memory means for storing information corresponding to the load condition on said drive means, and for maintaining said information after said drive means becomes inoperative; and (c) drive control means for controlling rotating state of said drive means on the basis of the information stored in said memory means at least when said drive means becomes inoperative.

Claim 29

Dependent Claim 74 words

Apparatus according to claim 25, further comprising: switching means for switching said drive means between a first operation mode for causing said rotatable member to rotate and a second operation mode for not causing said rotatable member to rotate; said drive control means controlling rotating state of drive means on the basis of said information in response to the switching from the second operation mode to the first operation mode by said switch means.

Claim 30

Dependent Claim 13 words

Apparatus according to claim 25, wherein said rotating state is a rotating speed.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1992-03-27	1992-09-26	1993-03-28	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1996-03-27	1996-09-26	1997-03-28	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2000-03-27	2000-09-26	2001-03-28	$7700.00	Window Closed / Lapsed

Recording and/or reproduction apparatus capable of retaining start up information

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