公开(公告)号：US3619625A

公开(公告)日：1971-11-09

申请号：US3619625D

申请日：1969-01-21

Applicant: SYCOR INC

Inventor： WOOD ROBERT E

IPC: G11B15/08 ,  G11B5/00

CPC classification number: G11B15/08

Abstract: A tape recorder/reproducer apparatus, generally including spindles for mounting recording tape reels and drive means for moving the tape from one reel to the other, and particularly including light sources and light sensors positioned immediately beneath the position of the tape and light guide means for directing the light from such source to that portion of tape positioned between the reels and back to one sensor, and also with light guide means for directing light from such source to the tape wound on one of the reels and back to another such sensor, for extremely accurate, automatic recording and reproducing control functions with respect to tape position.

公开(公告)号：US3587997A

公开(公告)日：1971-06-28

申请号：US3587997D

申请日：1969-01-31

Applicant: SYCOR INC

Inventor： WOOD ROBERT E

IPC: G11B15/32 ,  G03B1/04

CPC classification number: G11B15/32

Abstract: A DRIVE TRAIN INCLUDING A REVERSIBLE MOTOR HAVING AN OUTPUT SHAFT COUPLED TO ONE OR THE OTHER OF A PAIR OF TAPE DRIVE SPINDLES AS A FUNCTION OF THE DRIVING DIRECTION OF THE OUTPUT SHAFT, BY A DRIVE TRANSMISSION MEANS INCLUDING AN IDLER ROLLER HELD IN DRIVING ENGAGEMENT WITH THE MOTOR OUTPUT SHAFT BY A SUPPORT BRACKET PIVOTAL ABOUT THE AXIS OF THE OUTPUT SHAFT, SUCH THAT THE SUPPORT BRACKET FOLLOWS THE DRIVING DIRECTION OF THE SHAFT

TO MOVE THE IDLER ROLLER IN AN ARCUATE PATH OF CONSTANT RADIUS ABOUT THE OUTPUT SHAFT AXIS AS A CENTER, INTO AND OUT OF ENGAGEMENT WITH ONE OR THE OTHER OF THE TWO TAPE DRIVE SPINDLES.

公开(公告)号：US3552671A

公开(公告)日：1971-01-05

申请号：US3552671D

申请日：1969-02-27

Applicant: SYCOR INC

Inventor： WOOD ROBERT E

IPC: G11B15/32 ,  B65H17/02

CPC classification number: G11B15/32

Abstract: A drive spindle, particularly for internally ridged or toothed winding reels and the like, generally comprising an elongated shaftlike member, and characterized by a reel-engaging end having a rounded triangular cross section at any plane transversely intersecting its axis, and with a longitudinally tapered configuration, with camlike side surfaces converging at such end.

公开(公告)号：US3582743A

公开(公告)日：1971-06-01

申请号：US3582743D

申请日：1969-03-13

Applicant: SYCOR INC

Inventor： DIAZ GUILLERMO ,  WOOD ROBERT E ,  IRWIN SAMUEL N

IPC: G11B15/46 ,  G11B15/54 ,  G11B15/60 ,  G11B15/32

CPC classification number: G11B15/46 ,  G11B15/54 ,  G11B15/60 ,  Y10S388/907 ,  Y10S388/909 ,  Y10S388/93

Abstract: In a tape recorder/reproducer apparatus, particularly where a low-inertia highly responsive drive train is used, tape speed control means including a variable-speed motor for the drive train energized through a closed-loop servosystem in which the actual output speed of the motor is monitored by a sensor and compared to a reference, to closely control the motor speed in accordance with the reference. The reference is provided by a freely supported capstan which senses actual tape speed at the tape head and produces an output which is compared to a predetermined reference representative of the desired tape speed, such that the motor is servo controlled to satisfy a predetermined tape speed function.