1
Ross W Johnston, Theodore D Rees, Edward J Rhodes: Digital data tape storage system utilizing plurality of read/write heads with system diagnostic capability. R Byte, Lyon & Lyon, February 15, 1994: US05287478 (50 worldwide citation)

A complete digital data storage magnetic tape system for utilization with a host unit comprising a host device, an interface for interfacing the host unit with the DDS system, a controller for encoding and decoding data to and from the magnetic tape, an automatic track follower for performing automa ...


2
Edward J Rhodes, Daryl K Adams, Clifford R Berry, Ta Lin Chang, David R Lee: Digital data storage tape formatter. R Byte, Lyon & Lyon, October 25, 1994: US05359468 (44 worldwide citation)

In a digital data storage audio tape system having a host device interface unit, a main data buffer manager, a main data buffer, a processor, a data separator, a tape drive unit, and a read/write channel, this invention comprises a formatter providing track construction, encoding and decoding, error ...


3
Ross W Johnston, Theodore D Rees, Edward J Rhodes: ISO/IEC compatible digital audio tape digital data storage system with increased data transfer rate. R Byte, Lyon & Lyon, April 11, 1995: US05406425 (22 worldwide citation)

The present invention provides a complete digital data storage (DDS) magnetic tape system for utilization with a host unit. The invention comprises a host device interface for interfacing the host unit with the DDS system, a controller/formatter for encoding and decoding data from and to the magneti ...


4
David R Lee: Beginning/end of tape detection system. R Byte, Lyon & Lyon, May 3, 1994: US05309300 (9 worldwide citation)

This invention is a beginning-of-tape/end-of-tape detection apparatus and method for use in a tape drive system having supply reel, take-up reel, and capstan motion sensors. The invention comprises monitoring means for monitoring each of the angular position signals and processor means for computing ...


5
David R Lee: Automatic helical scan head drum calibration and track timing generation. R Byte, Lyon & Lyon, September 7, 1993: US05243473 (9 worldwide citation)

This invention is a method and apparatus for the automatic calibration of the magnetic head offset angles in a helical scan rotating head drum and the generation of idealized track timing for recording and reading magnetic tape. A calibration tape is used to provide calibration marks and in conjunct ...


6
David R Lee, Theodore D Rees: Method and apparatus for commutation of a brushless dc motor. R Byte, Lyon & Lyon, January 5, 1993: US05177417 (7 worldwide citation)

An apparatus and method for the commutation of a brushless dc motor having a rotor and a plurality of coils, and an encoder generating quadrature signals responsive to the rotation of the rotor. The commutation apparatus comprises a commutation control device, coupled to the encoder, for controlling ...


7
Edward J Rhodes, David R Lee, Theodore D Rees: Digital data tape storage automatic track follower system. R Byte, Lyon & Lyon, March 14, 1995: US05398140 (6 worldwide citation)

An automatic track follower (ATF) system for accurately positioning the read/write head on the tracks of a magnetic tape comprises a pilot signal generator for generating pilot signals from tape pilot marks; a sample-and-hold circuit for sampling the pilot signals from the tracks immediately adjacen ...


8
David R Lee, Horatio H Lo, Theodore D Rees: Digital data storage magnetic tape system comprising a single chip processor to control a tape tension servo, and a head drum servo. R Byte, Lyon & Lyon, February 15, 1994: US05287233 (3 worldwide citation)

This invention is an improved digital data storage magnetic tape transport servo-control system comprising a tape supply reel and supply reel motor, a tension transducer, a head drum having at least one read/write head secured thereto and coupled to a head drum motor, a capstan and a capstan motor, ...


9
Howard A Feinberg, Theodore D Rees: Tape engagement mechanism for magnetic cassette tape. R Byte, Lyon & Lyon, June 18, 1991: US05025333 (3 worldwide citation)

A mechanism for registering the tape contained within a cassette around a hellical-scan head drum mechanism includes means for sensing the presence of the tape cassette in a proper position for beginning the process of engagement of the tape in the cassette with the head assembly in the device. A sy ...


10
Howard A Feinberg: Tape engagement mechanism for magnetic cassette tape incorporating a bi-directional over running clutch and improved capstan pinch scheme. R Byte, Lyon & Lyon, December 22, 1992: US05173817 (1 worldwide citation)

A mechanism for registering the tape contained within a cassette around a helical-scan head drum mechanism includes a sensor for sensing the presence of the tape cassette in a proper position for beginning the process of engagement of the tape in the cassette with the head assembly in the device. A ...