1
James T Russell: Digital color television system. Eli S Jacobs, Klarquist Sparkman Campbell Leigh Hall & Whinston, March 29, 1977: US04015286 (110 worldwide citation)

A digital color television system is described in which only one chrominance component of the video color television signal is transmitted for each television line, and digital delay means is employed for delaying at least one of the two chrominance components I and Q of the color television signal ...


2
James T Russell: Method and apparatus for sampling and reproducing television information. Eli S Jacobs, Klarquist Sparkman Campbell Leigh Hall & Whinston, January 10, 1978: US04068265 (101 worldwide citation)

The effective resolution of a TV presentation reproduced from digitally encoded samples is improved by shifting the sampling points back and forth at a relatively rapid rate. Alternate lines of the original television raster are sampled at shifted points, wherein the shift is less than the sampling ...


3
James T Russell: Multi-layered opitcal data records and playback apparatus. Eli S Jacobs, Klarquist Sparkman Campbell Leigh Hall & Whinston, May 16, 1978: US04090031 (92 worldwide citation)

Multi-layered optical data records and playback apparatus are described in which a plurality of optical data layers are provided on at least one side of a record substrate and the playback apparatus scans data tracks on such layers with a light beam to produce an electrical readout signal correspond ...


4
James T Russell: Record playback apparatus for optical data records. Eli S Jacobs, Klarquist Sparkman Campbell Leigh Hall & Whinston, August 26, 1980: US04219704 (76 worldwide citation)

Multi-layered optical data records and playback apparatus are described in which a plurality of optical data layers are provided on at least one side of a record substrate and the playback apparatus scans data tracks on such layers with a light beam to produce an electrical readout signal correspond ...


5
James T Russell: Compression and expansion circuitry for a recording and playback system. Eli S Jacobs, Klarquist Sparkman Campbell Leigh Hall & Whinston, September 23, 1980: US04224481 (43 worldwide citation)

Recording and playback optical scanners are relatively movable with respect to each other and with respect to a movable recording medium such as reel of tape adapted for recording variations in applied light. The playback scanner reproduces recorded information at a time delayed with respect to the ...


6
James T Russell: Multiple beam optical record playback apparatus for simultaneous scan of plural data tracks. Eli S Jacobs, Klarquist Sparkman Campbell Leigh Hall & Whinston, February 14, 1978: US04074085 (39 worldwide citation)

An optical data record playback apparatus is described for simultaneously scanning a plurality of data tracks on the optical record by employing two or more light beams controlled by closed loop servos. First and second optical servo means respectively, are employed to deflect the light beams for tr ...


7
James T Russell: Repetition reduced digital data record and playback system. Eli S Jacobs, Klarquist Sparkman Campbell Leigh Hall & Whinston, April 17, 1979: US04150397 (35 worldwide citation)

A record and playback system for reducing repetition redundancy is described in which during recording, a partially repetitive signal, such as a television signal, is converted into digital data words each representing the signal occurring during a particular TV line subinterval. A comparator unit r ...


8
James T Russell: Light beam scanner. Eli S Jacobs, Klarquist Sparkman Campbell Leigh Hall & Whinston, August 7, 1979: US04163600 (26 worldwide citation)

Multi-layered optical data records and playback apparatus are described in which a plurality of optical data layers are provided on at least one side of a record substrate and the playback apparatus scans data tracks on such layers with a light beam to produce an electrical readout signal correspond ...


9
James T Russell, Bernard P Hildebrand: Method of manufacturing and utilizing holographic lens means. Eli S Jacobs, Klarquist Sparkman Campbell Leigh Hall & Whinston, January 9, 1979: US04133600 (18 worldwide citation)

Holographic lenses are formed on a substantially transparent scanning disc wherein a line focus is the object for each hologram. Such hologram is then used to reconstruct the line focus at the location of the record to be scanned, thereby alleviating tolerance requirements in regard to the positioni ...


10
James T Russell: Optical data record copier having array of lenses with field gaps aligned with data gaps. Eli S Jacobs, Klarquist Sparkman Campbell Leigh Hall & Whinston, September 27, 1977: US04050811 (12 worldwide citation)

An optical data record copying apparatus is described which includes an array of lenses whose viewing fields do not overlap but are separated by field gaps. The viewing field gaps are aligned with data gaps between data groups in the data tracks on the master record to prevent distortion of the copi ...