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| Number | Title | Issue Date |
| 7359450 | Digital transmission of broadcast signals, including HDTV signals, over a microwave link Methods and apparatus are provided for the provision of high definition television services over an analog or digital broadcast infrastructure. In one aspect, the present invention provides a method for transmitting a plurality of digital data streams over an analog... | 04/15/2008 |
| 7346107 | VSB transmission system for processing supplemental transmission data A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data packets includes a VSB supplemental data processor and a VSB transmission system. The VSB supplemental data processor includes a Reed-Solomon coder for coding the su... | 03/18/2008 |
| 7215671 | Information processing apparatus and method There is disclosed an information processing apparatus/method comprises inputting variable length packet data including packet length information indicative of a packet length and encoded information data, and identification flag information for identifying the pack... | 05/08/2007 |
| 7194548 | Data transmission apparatus, receiving apparatus, and sending apparatus A data transmission apparatus for conveying proper timing information to the destination application without embedding such information in transmission data packets. Particularly, the apparatus comprises a timing component for generating and inserting additional tim... | 03/20/2007 |
| 7190407 | System, method and apparatus for sandcastle signal generation in a television signal processing device A system, method and apparatus are provided for generating 98 a sandcastle signal in a television signal receiver 90, and utilizing the sandcastle signal during television signal processing. In one form, the sandcastle signal is generated by subtractin... | 03/13/2007 |
| 7180886 | Synchronized data communication on a one-wired bus In a synchronized data communication on a one-wired bus, it transmits and receives a synchronizing signal that segments part of or all proportions of the data signal by use of three electrically distinguishable statuses for the identifier of the synchronizing signal... | 02/20/2007 |
| 7100182 | Digital VSB transmission system A digital VSB transmission system that is able to send supplemental data along with MPEG image/sound data is enclosed. The system initially encodes the supplemental data symbol to generate a parity bit, and it multiplexes the parity bit with a predefined sequence an... | 08/29/2006 |
| 7085324 | Communication system in digital television A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data packets includes a VSB supplemental data processor and a VSB transmission system. The VSB supplemental data processor includes a Reed-Solomon coder for coding the su... | 08/01/2006 |
| 7072406 | Serial interface and method for transferring digital data over a serial interface A digital serial interface connects a transmitting device with a receiving device for communicating both data bits and synchronization signals via the serial interface. The transmitting device include a primary transmitter for converting a serial sequence of the dat... | 07/04/2006 |
| 7053959 | Digital video encoder A mask circuit masks a digital video signal so that a video signal of an analog video signal is not outputted for a predetermined period after the start of output of a horizontal synchronizing signal of the analog video signal. A period of masking the digital video ... | 05/30/2006 |
| 7027103 | VSB reception system with enhanced signal detection for processing supplemental data A VSB reception system includes a sequence generator for decoding a symbol corresponding to the supplemental data and generating a predefined sequence included in the supplemental data at VSB transmission system. The reception system also includes a modified legacy ... | 04/11/2006 |
| 7010038 | VSB transmission system for processing supplemental transmission data A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data packets includes a VSB supplemental data processor and a VSB transmission system. The VSB supplemental data processor includes a Reed-Solomon coder for coding the su... | 03/07/2006 |
| 6967694 | Demodulator for demodulating digital broadcast signals To present a digital broadcast demodulator, in a demodulator of digital terrestrial wave broadcast for transmitting coded digital video and audio information in a packet form, capable of detecting packet synchronism stably and precisely, controlling the AGC, and pro... | 11/22/2005 |
| 6967690 | VSB reception system with enhanced signal detection for processing supplemental data A VSB reception system includes a sequence generator for decoding a symbol corresponding to the supplemental data and generating a predefined sequence included in the supplemental data at VSB transmission system. The reception system also includes a modified legacy ... | 11/22/2005 |
| 6950556 | Video coding and video decoding apparatus A video encoding apparatus is provided with a resolution converting section, an encoding section, and a transmitting section. The resolution converting section enlarges or reduces a binary picture which represents the shape of an object. The encoding section encodes... | 09/27/2005 |
| 6947487 | VSB communication system A VSB communication system comprises a VSB transmission system and a VSB reception system. The VSB transmission system multiplexes a coded MPEG data and a coded supplemental data having a null sequence inserted therein, with required multiplexing information include... | 09/20/2005 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6925293 | Antenna diversity system with phase controlled summation of antenna signals An antenna diversity system for receiving frequency-modulated (FM) radio signals with the phase-controlled summation of antenna signals for motor vehicles equipped with a multi-antenna system having at least two antenna output signals, and a receiver with an input f... | 08/02/2005 |
| 6922215 | VSB reception system with enhanced signal detection for processing supplemental data A VSB reception system includes a sequence generator for decoding a symbol corresponding to the supplemental data and generating a predefined sequence included in the supplemental data at VSB transmission system. The reception system also includes a modified legacy ... | 07/26/2005 |
| 6278743 | Non linear amplitude precorrection for HDTV transmitter A circuit for developing correction signals for on-line controlling a precorrection arrangement in an HDTV 8VSB digital signal transmitter. The transmitted signal is sampled, sorted, smoothed and sliced to determine the symbol amplitude levels of the tran... | 08/21/2001 |
| 5978424 | Frame identification system A digital television signal includes successive frames of two fields each comprising 313 data segments with the first data segment in each field functioning as a field sync. The field sync segment comprises a 511 PN sequence and three 63 pseudo-random num... | 11/02/1999 |
| 5959682 | Data segment sync detection circuit and method thereof A circuit for detecting a data segment sync signal of data segment consisting of a plurality of symbols in a high-definition television, includes a correlator for detecting a correlation value from a received data segment signal, a segment integrator for ... | 09/28/1999 |
| 5955618 | Circuit for generating field identification signal and method therefor A field identification signal generating circuit for a receiver for receiving a high-definition signal, and a method therefor. According to the method, a first correlation value is calculated, between the high-definition signal and a first reference signa... | 09/21/1999 |
| 5903324 | Transport processor interface for a digital television system A transmitted high definition television signal is represented by a packetized datastream configured as a sequence of data fields with a non-uniform data rate due to different types of different duration non-data overhead information. Each data field is p... | 05/11/1999 |
| 5801769 | Vibration compensator with corrects for vibration errors based on servo control unit errors An apparatus including an image sensing system which receives light from an object and further outputs a video signal; a reproducing system which reproduces a video signal recorded on a recording medium; a selection circuit which selectively outputs eithe... | 09/01/1998 |
| 5625418 | Method and arrangement for inserting frame markers in data for transmission and for retrieving the data with the aid of such frame markers For the preparation of data such as digitized television channel signals or television channel bundles, useful data are periodically replaced by a frame marker (F) in at least one of N parallel partial data streams of different bit significance. For this ... | 04/29/1997 |
| 5619269 | Frame sync signal for digital transmission system An ATV signal includes a field sync reference having a relatively long pseudo-random number symbol sequence followed by three relatively short pseudo-random number symbol sequences, with the middle of the three short pseudo-random number symbol sequences ... | 04/08/1997 |
| 5602595 | ATV/MPEG sync system An ATV system encodes variable length elementary streams of data into a multilevel symbol signal comprising a plurality of multiplexed fixed length data packets without sync information. The fixed length data packets are arranged in fields of repetitive d... | 02/11/1997 |
| 5598220 | Digital signal with multilevel symbols and sync recognition A digital video field identification system includes video signals formatted in blocks of video symbols in repetitive data segments with each data segment including a synchronizing signal character. One data segment includes a field timing signal. A refer... | 01/28/1997 |
| 5594506 | Line sync detector for digital television receiver A line sync detector for a digital television receiver receives digital television data including line synchronization code groups of four symbols having successive values of +S, -S, -S and +S at the beginning of each data line, S being a prescribed sampl... | 01/14/1997 |
| 5534938 | Digital TV system using segment and field sync signals A digital data transmission system includes data signals formatted in successive fields consisting of blocks of video symbols in repetitive data segments with each data segment including a synchronizing signal character for providing data segment sync. Th... | 07/09/1996 |
| 5416524 | Digital television synchronization system and method A digital television signal includes data sent as multilevel symbols in successive data segments each including a synchronizing sync character. The detected synchronizing sync character produces a characteristic having two opposite polarity levels separat... | 05/16/1995 |
| 5327236 | Video switcher apparatus for wide screen EDTV signals A compatible special effect signal can be produced without using an encoder or a special signal processor. Each of EDTV signals is divided into a main screen signal and a compensation screen signal. Compensation screen modification circuits modify the spe... | 07/05/1994 |
| 5140420 | Information in vertical blanking interval of video sync signal In a television sync signal one or more of the post-equalizing pulses of the vertical blanking interval is/are altered in duration to provide information to a receiving circuit.... | 08/18/1992 |
| 5036391 | Synchronization method for the transmission, of an asynchronous channel, or a series of pictures encoded by means of a variable length code, and device for the implementation of this method The synchronization method, consists in transmitting, in addition to the data: inter-block separators, for separating the data corresponding to separate blocks, each inter-block separator comprising: a fixed radical, a first binary word representing the r... | 07/30/1991 |
| 5008749 | Method and apparatus for generating an auxiliary timing signal in the horizontal blanking interval of a video signal An auxiliary signal including a burst of oscillations and a blacker-than-black horizontal synchronizing signal is inserted in the horizontal blanking intervals of an HDTV video signal by first generating a digital auxiliary signal in a PROM operating at a... | 04/16/1991 |
| 4864400 | Television synchronization system A television synchronization system in which a bipolar signal having a waveform including a front porch (304), a negative polarity pulse, a positive polarity pulse and a back porch is used as a horizontal sync signal, and a composite signal having a wavef... | 09/05/1989 |
| 4723164 | Tri-state sync technique An apparatus and method is provided for transmitting both horizontal and vertical sync on a single transmission channel in a raster scan display system. Separate, essentially two-state horizontal and vertical sync signals are combined to form a tri-state ... | 02/02/1988 |
| 4697277 | Synchronization recovery in a communications system Synchronization between a transmitter and a receiver is effected by encoding and transmitting a synchronization pulse as a series of m first waveforms followed by a series of n second waveforms. The first and second waveforms are of the same duration and ... | 09/29/1987 |
| 4631586 | Digital raster timing encoder/decoder The invention presents a digital raster timing encoder/decoder system when television raster synchronization pulses and other timing pulses and information data are generated. The invention comprises a digital clock source having coding circuitry which, ... | 12/23/1986 |
