Rca Inc.

Sarnoff Corporation

General Electric Company

Thomson Licensing S.a.

Rca Licensing Corporation

Orion Electric Company, Ltd.

Charles M Wine

Christopher Ward

John G Henderson

Glenn A Reitmeier

Paul Wallace Lyons

David B Homan

Joel Walter Zdepski

Alfonse Anthony Acampora

Michael Anthony Isnardi

James A Wilber

Juri Tults

Glenn Arthur Reitmeier

Robert Norman Hurst

Dipankar Raychaudhuri

Michael Tinker

David Arthur New

Dennis John Bechis

Joseph Michael Carpinelli

Chris Ward

Edward Coley Fox

Robert Morgan Rast

Kamil M Uz

Victor Vincent D'Alessandro

Thomas Michael Stiller

In a cathode ray tube, plural electron beams are directed towards a faceplate biased at screen potential and are magnetically scanned by a non-self-converging deflection yoke across the faceplate to impinge upon phosphors thereon to produce light depicting an image. The plural electron beams are substantially converged near two opposing edges of the faceplate. A processor changes the raster of the image from a first raster corresponding to position of the image to a second raster corresponding to the position of the plural electron beams on the faceplate. One or more electrodes between the tube neck and the faceplate are biased above and/or below screen potential to deflect electrons landing near the periphery of the faceplate.

Space-saving cathode ray tube employing a non-self-converging deflection yoke

A command and control architecture for a compressed digital television broadcast studio. The architecture includes provisions for session management, real-time control of studio activities, the use of proxy objects to establish communications with objects not providing a high level of control, control of studio filter devices and stream management. The invention includes an object architecture particularly suited to a digital studio.

Command and control architecture for a digital sound

A method and apparatus for distributing time and frequency information to a plurality of studios such that the studios can then use the time and frequency information frequency and timelock their studio components to the global reference. The apparatus includes various embodiments for facilitating the distribution of time and frequency depending upon the type of digital network that is used for distributing the television signals.

Method and apparatus for distributing a globally accurate knowledge of time and frequency to a plurality of a high definition television studios

A subjective evaluator delineates regions of an information space to be encoded in a qualitatively preferential or non-preferential manner such that the encoded information space comprises one or more of normal, emphasized or de-emphasized information content.

Content-adaptive compression encoding

A digital video tape record/playback apparatus (FIG. ) for processing a high definition television signal includes provision for controlling the occurrence of high priority (HP) image information. Such information is selectively recorded at normal speed in tape tracks within predetermined regions (HP -HP ) so as to appear along a tape head scanning path associate with predetermined tape playback speeds greater than normal (e.g., 20&times; normal). Input high priority data cells may be reordered or duplicated for recording in the predetermined tape regions in other than received order. In either case, the input datastream is massaged to produce a viewable image in a fast playback mode. In an illustrated system for receiving an MPEG coded datastream, an output datastream at greater than normal playback speed comprises either intracoded I-frame data cells only, or a whole Group of Pictures (GOP).

Digital video tape recorder for digital HDTV

An apparatus and method for receiving a bitstream containing timing information and respective program information, the program information is processed and associated with locally generated timing information to form an output bitstream, the locally generated timing information is synchronized to the received timing information so that the timing relationships of the received program information are preserved even after the program information is processed.

Method and apparatus for time base recovery and processing

A method and apparatus for preserving audio and video presentation synchronization during the splicing operation by selectively deleting, if necessary, an audio/video access unit to avoid overlapping of audio/video frames in the spliced output stream.

Method and apparatus for preserving synchronization of audio and video presentation when splicing transport streams

A method and apparatus for splicing a first compressed digital information stream into a second compressed digital information stream. The first information stream includes at least one entrance indicium identifying an appropriate stream entrance point, the second information stream includes at least one exit indicium identifying an appropriate stream exit point. A controller monitors the two streams until the appropriate points are found and, in response to a control signal, splices the first stream into the second stream.

Method and apparatus for splicing compressed information streams

A studio class directory structure, for example, in a computer-readable media. The directory structure has a gateway service interface as a root directory, a devices class directory, coupled to said root directory, a servers class directory, coupled to said root directory, a studios class directory, coupled to said root directory and a software resources class directory, coupled to said root directory.

Command and control architecture for a digital studio

A preprocessor for conditioning interlace-scan video signals for frame based compression, includes apparatus to accept fields of interlace-scanned video and provide fields of interlace-scanned luminance and chrominance component signals. The fields of interlace-scanned luminance component are combined into respective frames of luminance signal and applied to compressor apparatus for further processing. The fields of interlace scanned chrominance components are independently processed at the field level to generate lines of chrominance values which are interstitial to the lines of the original chrominance values and at a lesser pixel and line density. The independently processed fields of interlace-scanned chrominance signals are combined into respective frames of chrominance component signals and applied to compressor circuitry for further processing. Performing the chrominance signal interpolation and subsampling at the field level tends to eliminate a majority of color distortions around moving images. Receiver apparatus is configured to perform post decompression processing to generate frame data having the original pixel and line density.

Digital television signal compression apparatus

Apparatus for encoding/decoding a HDTV signal for e.g., terrestrial transmission includes a compression circuit responsive to high definition video source signals for providing ierarchically layered codewords CW representing compressed video data and associated codewords T, defining the types of data represented by the codewords CW. A priority selection circuit, responsive to the codewords CW and T, parses the codewords CW into high and low priority codeword sequences wherein the high and low priority codeword sequences correspond to compressed video data of relatively greater and lesser importance to image reproduction respectively. A transport processor, responsive to the high and low priority codeword sequences, forms high and low priority transport blocks of high and low priority codewords respectively. Each transport block includes a header, codewords CW and error detection check bits. The respective transport blocks are applied to an forward error check circuit for applying additional error check data. Thereafter the high and low priority data are applied to a modem wherein they quadrature amplitude modulate respective carriers for transmission.

An HDTV compression system

A commercial message timer stores data indicative of a first tuned station in response to a channel change command and begins repeatedly timing a predetermined time period. Upon each expiration of the time period, the user is reminded that the commercial message on the first tuned station may be over. In this way a user can avoid a commercial message on a first channel by setting the timer and scanning through other channels, and yet be reminded to return (e.g. by use of a PC (previous-channel) key) to the first channel at the end of a time period substantially equal to that of a typical commercial message. In another embodiment employing a videocassette recorder (VCR) the commercial timer is activated upon pressing the PAUSE key of the VCR so that the user may avoid recording the commercial message on videotape.

Automatically activated commercial message timer

Digital computer data recorded in a spiral track on the surface of a disk using a laser recording head which moves radially across the disk as it revolves at a constant linear velocity. A system for controlling the disk velocity during the recording process includes a device for counting each convolution of the spiral and means for calculating the number of bits of information which should optimally be recorded in that convolution. A counter keeps track of the number of bits which are actually being recorded in that convolution. The calculated number of bits is compared with the number of bits actually recorded to produce a control signal for regulating the speed at which the disk revolves.

Compact disk read only memory recording system with speed control

A system capable of synthesizing multi-channel sound for a computer includes a sound generator for each audio channel. A circuit provides a programmable delay so that one generator produces sound in one channel that is delayed with respect to the sound in the other channel. Multiple generators may be provided in each channel with each such generator having an independently programmable delay circuit associated therewith.

Multichannel computer generated sound synthesis system

A microprocessor embodied in an integrated circuit has a clock signal generator comprising an inverter in the integrated circuit and a frequency determining network external to the integrated circuit connected to the inverter through terminals. The clock signal generator generates a clock signal which determines the frequency of the instruction cycles of the microprocessor. The operation of the microprocessor is synchronized with a television horizontal rate signal by programming it to generate a comparison signal each time a predetermined number of instruction cycles, selected so that the comparison signal has the same nominal frequency as the horizontal rate signal have occurred. The simple wired AND gate serves as coincidence detector for the horizontal rate signal and the comparison signal and generates a pulse error signal representing the phase and frequency deviations between its two input signals. The error signal is filtered and coupled to the inverter to control the phase and frequency of the clock signal. This microprocessor synchronization arrangement is used to form characters on the screen of a picture tube without the need of an additional character generator.

Growing community of inventors

Princeton, NJ, United States of America

Charles M Wine