1
Don S Rhines, William D McCoy, Kirk H Handley: Triple orthogonally interleaed error correction system. E Systems, Ampex Corporation, Harold E Meier, February 21, 1995: US05392299 (235 worldwide citation)

The detection and correction of errors in digital data transmitted by or stored in a media channel is provided by processing the data through a triple orthogonally interleaved error correction system. On the transmit/store side of the system, the data is encoded three times prior to placement in the ...


2
John E Davis: Shadow memory system for storing variable backup blocks in consecutive time periods. Ampex Corporation, September 25, 1990: US04959774 (170 worldwide citation)

A highly reliable shadow memory system is able to survive multiple fast sequence power failures and includes a volatile main memory and a shadow memory subsystem which continually monitors write accesses to the main memory. The shadow memory subsystem includes a disk drive or shadow memory storing a ...


3
Phillip P Bennett: Video device synchronization system. Ampex Corporation, Robert K Schumacher, Ralph L Mossino, Joel D Talcott, July 30, 1985: US04532547 (159 worldwide citation)

A TV video signal synchronization signal system enables a video device such as a digital special effects system to operate synchronously in response to an input video signal and still produce an output video signal synchronized to a television studio locking reference signal. The video device and th ...


4
Sidney D Miller, Peter Smidth, Charles H Coleman: Data compression using a feedforward quantization estimator. Ampex Corporation, George B Almeida, September 8, 1992: US05146324 (125 worldwide citation)

An image data compression technique is described which utilizes calculating means and a selected series of bit calculating stages having delays, to estimate one or more quantization parameters for such data. The estimation process preferably is iterated a number of times, with the values found throu ...


5
David N Larkins, Glenn T Yoshida, Thomas L Helmers: Interactive rotary controller system with tactile feedback. Ampex Corporation, John G Mesaros, February 23, 1993: US05189355 (125 worldwide citation)

An apparatus for controlling conditions in response to an operator input, the apparatus including a rotary knob coupled to the shaft of the rotor of a stepper motor having first and second stator windings, in quadrature, with each winding being center tap grounded to provide first and second winding ...


6
Marshall Williams: Dynamically interactive responsive control device and system. Ampex Corporation, Rodney L Marett, Harry G Thibault, Joel D Talcott, December 24, 1985: US04560983 (117 worldwide citation)

A general device for the input of information in a binary format through rotational motion is disclosed, having independent means for the simultaneous output of information in a form perceivable to the human tactile sense. In particular, a knob is coupled to a shaft, a tachometer and a particle brak ...


7
Paul J Rudnick, Alastair M Heaslett: Method and apparatus employing an improved format for recording and reproducing digital audio. Ampex Corporation, Robert G Clay, George B Almeida, July 8, 1980: US04211997 (113 worldwide citation)

An audio signal is sampled, quantized and the values are stored in a specific digital data block/sub-block format on alternate tracks of a recording medium. The block/sub-block format provides an inherent simplification of error correction techniques, and consists of dividing the digital audio data ...


8
Robert Steele: Method and apparatus for controlling the position of a transported web. Ampex Corporation, Rodney L Marett, Joel D Talcott, September 8, 1987: US04692819 (101 worldwide citation)

An apparatus and method for controlling the position of a web containing location identifying information thereon. In particular, a means for measuring displacement of the web independent of the location information is employed to measure the displacement of the web in a cyclic manner such that the ...


9
Steven A Gabriel: System for spatially transforming images. Ampex Corporation, Robert K Schumacher, Ralph L Mossino, Richard P Lange, March 13, 1990: US04908874 (93 worldwide citation)

A system for spatially transforming images by separate transformation of each dimension of the image is exemplified by a raster scan television system which includes for each color component a transposing memory providing a change of scan direction from horizontal to vertical, a vertical transformat ...


10
David C O Gwynn, Thomas L Helmers: Method and apparatus for transporting a recording medium with an adaptive velocity change profile. Ampex Corporation, Elizabeth E Strnad, Richard P Lange, March 15, 1988: US04731679 (92 worldwide citation)

An adaptive velocity change profile for control of a video tape transport apparatus during a cue mode. The tape transport apparatus moves the video tape to a cue point in the shortest time available by adapting a deceleration velocity change profile to the actual ballistics of transport of the tape. ...