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| Number | Title | Issue Date |
| 6100932 | Methods and apparatus for efficiently storing reference frame data and using the stored data to perform motion compensated predictions Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used ... | 08/08/2000 |
| 6025878 | Method and apparatus for decoding both high and standard definition video signals using a single video decoder Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used ... | 02/15/2000 |
| 5933567 | Method and apparatus for controlling the position of the heads of a digital video tape recorder during trick play operation and for recording digital data on a tape Digital video tape recorder ("VTR") and servo circuit for supporting the display of images during trick play VTR operation. The digital VTR, in one embodiment, having a single pair of heads of alternating azimuths located on a head cylinder one track widt... | 08/03/1999 |
| 5825927 | Methods and apparatus for encoding video data in a manner that is well suited for decoding by regular or downconverting decoders Plurality of encoding methods and apparatus for encoding video data in a manner that makes it well suited for decoding by either regular or downconverting decoders are described. In one embodiment, the selection and/or generation of motion vectors by an e... | 10/20/1998 |
| 5783974 | Digital interpolation up sampling circuit and digital modulator using same Methods and apparatus for converting a relatively low frequency signal, e.g., a 1.5 MHz signal, to a high frequency signal, e.g., a 30-100 MHz signal, in the digital domain. An interpolation technique is used to convert the low rate digital signal to a hi... | 07/21/1998 |
| 5778143 | Method and apparatus for the selection of data for use in VTR trick playback operation in a system using progressive picture refresh Method and apparatus for generating a fully intra-coded video frame from a received progressive refresh bitstream representing a series of inter-coded video frames. Intra-coded macroblocks of received video frames are identified, selected, processed and s... | 07/07/1998 |
| 5767907 | Drift reduction methods and apparatus A video decoder capable of downsampling full resolution images on a block by block basis regardless of the downsampling rate is disclosed. When the applied downsampling rate does not divide evenly into the number of pixel values included in a block in the... | 06/16/1998 |
| 5745649 | Automated speech recognition using a plurality of different multilayer perception structures to model a plurality of distinct phoneme categories For speech recognition systems a method for modeling context-dependent phonetic categories using artificial neural nets has been described. First, linguistically motivated context-clustering is employed to reduce the number of context-dependent categories... | 04/28/1998 |
| 5740307 | Methods for monitoring a trick play data stream to insure MPEG compliance Methods and apparatus for insuring that a trick play data stream, e.g., a stream of data used for fast forward or reverse playback operation, complies with preselected data standards and in particular the MPEG-2 standard are disclosed. Various methods are... | 04/14/1998 |
| 5729648 | Method and apparatus for selecting encoded video data for use during video recorder trick play operation Method of operating a digital video tape recorder apparatus that receives encoded and packetized digital video data, depacketizes the received data and decodes the data to the extent necessary to select a subset of the data for use during trick play opera... | 03/17/1998 |
| 5729649 | Methods and apparatus for recording data on a digital storage medium in a manner that facilitates the reading back of data during trick play operation A digital video tape recorder ("VTR") that selects data useful for generating images during trick playback operation and records the data in trick play tape segments arranged on a tape to form fast scan tracks and multi-speed playback tracks. Each fast sc... | 03/17/1998 |
| 5727553 | Catheter with integral electromagnetic location identification device Catheters incorporating an electromagnetic field detection device for use in conjunction with a catheter locating apparatus to determine the position of a catheter without the use of X-rays is disclosed. The electromagnetic field detection device includes... | 03/17/1998 |
| 5725478 | Methods and apparatus for providing suction and/or irrigation in a rigid endoscope while maintaining visual contact with a target area through the endoscope Methods and apparatus for providing suction and/or irrigation in rigid endoscopes used for, e.g., bronchoscopy, esphagoscopy, and sigmoidoscopy are described. The described methods and apparatus permit a user of the endoscope to maintain visual contact wi... | 03/10/1998 |
| 5726711 | Intra-coded video frame data processing methods and apparatus Method and apparatus for generating a fully intra-coded video frame from a received progressive refresh bitstream representing a series of inter-coded video frames. Intra-coded macroblocks of received video frames are identified, selected, processed and s... | 03/10/1998 |
| 5719921 | Methods and apparatus for activating telephone services in response to speech Methods and apparatus for activating telephone services in response to speech are described. A directory including names is maintained for each customer. A speaker dependent speech template and a telephone number for each name, is maintained as part of ea... | 02/17/1998 |
| 5717816 | Method and apparatus for the selection of data for use in VTR trick playback operation in a system using intra-coded video frames Method and apparatus for extracting intra-coded video frames from a video data stream including inter-coded video frames and intra-coded video frames to produce reduced resolution intra-coded video frames suitable for recording in trick play tape segments... | 02/10/1998 |
| 5691986 | Methods and apparatus for the editing and insertion of data into an encoded bitstream Methods and apparatus for inserting data into an encoded data stream are disclosed. In accordance with the disclosed methods data is inserted into an encoded data stream while maintaining MPEG-2 compliance. The disclosed methods achieve data reduction req... | 11/25/1997 |
| 5687275 | Trick play data indentification methods and apparatus for use with digital video recording and playback devices Methods of operating a digital video recording and playback device to identify trick play data, e.g., data that is intended for use during trick play modes of video playback device operation such as fast forward and reverse, by recording headers containin... | 11/11/1997 |
| 5684539 | Method and apparatus for processing encoded video data to reduce the amount of data used to represent a video image Methods and apparatus for processing digital video data to reduce the amount of video data required to represent a video frame by representing a frame or pair of field pictures into a single field of a pair of field picture are described. To prevent the s... | 11/04/1997 |
| 5673358 | Method for generating a reduced rate digital bitstream by selecting data as a function of the position within an image to which the data corresponds Methods and apparatus for converting digital signals having a variable data rate to fixed data rate signals suitable for recording on a tape by a digital video tape recorder are disclosed. The methods include buffering of the received variable rate data, ... | 09/30/1997 |
| 5673293 | Method and apparatus for demodulating QAM and VSB signals Method and apparatus for providing a QAM, a VSB, and a joint QAM/VSB demodulator are described. The describe demodulators are designed to minimize the amount of duplicated circuitry required to implement a joint QAM/VSB demodulator capable of performing t... | 09/30/1997 |
| 5668918 | Method for recording digital data using a series of adjacent heads of alternating azimuths located on a headwheel to record data at a rate that is less than the full recording rate possible using the heads Method for increasing the recording time of a digital video tape recorder ("VTR") and for supporting multiple normal play modes of digital VTR operation, e.g., a standard play mode of operation and one or more long play modes of operation. To achieve long... | 09/16/1997 |
| 5654759 | Methods and apparatus for reducing blockiness in decoded video Methods and apparatus directed to reducing blockiness resulting from encoding digital video data using, e.g., DCTs are disclosed. An encoder which encodes video signals into a digital video bitstream including information identifying blocky video and inst... | 08/05/1997 |
| 5652828 | Automated voice synthesis employing enhanced prosodic treatment of text, spelling of text and rate of annunciation Improved automated synthesis of human audible speech from text is disclosed. Performance enhancement of the underlying text comprehensibility is obtained through prosodic treatment of the synthesized material, improved speaking rate treatment, and improve... | 07/29/1997 |
| 5648923 | Nyquist filter for use in a joint VSB/QAM demodulator A Nyquist filter implemented as a FIR filter comprising a series of N filter cells, where N is an integer is disclosed. The Nyquist filter is especially well suited for use in demodulators capable of demodulating both VSB and QAM signals. During VSB mode ... | 07/15/1997 |
| 5646686 | Methods and apparatus for reducing drift in video decoders A video decoder capable of downsampling full resolution images on a block by block basis regardless of the downsampling rate is disclosed. When the applied downsampling rate does not divide evenly into the number of pixel values included in a block in the... | 07/08/1997 |
| 5642382 | Fir filters with multiplexed inputs suitable for use in reconfigurable adaptive equalizers Methods and apparatus for providing implementation efficient adaptive equalizers suitable for use with QAM and/or VSB signals are disclosed. Finite impulse response ("FIR") filters are used to implement the disclosed adaptive equalizers. A plurality of ar... | 06/24/1997 |
| 5636250 | Automatic VSB/QAM modulation recognition method and apparatus Methods and apparatus for automaticly distinguishing between QAM and VSB modulated signals and, for implementing an automatic VSB/QAM modulation recognition circuit are described. In accordance with various described embodiments, a narrow digital passband... | 06/03/1997 |
| 5635985 | Low cost joint HD/SD television decoder methods and apparatus Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used ... | 06/03/1997 |
| 5614957 | Digital picture-in-picture decoder Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used ... | 03/25/1997 |
| 5614952 | Digital video decoder for decoding digital high definition and/or digital standard definition television signals Methods and apparatus for reducing the complexity of decoder circuitry and video decoder memory requirements are disclosed. The described video decoders are capable of decoding HDTV pictures at approximately the resolution of standard definition televisio... | 03/25/1997 |
| 5598222 | Method and apparatus for decoding multiple video bitstreams using a common memory Implementation efficient video decoder for decoding multiple bitstreams to provide picture-in-picture capability in a digital video display device is disclosed. The video decoder includes a full resolution video decoder and a reduced resolution video deco... | 01/28/1997 |
| 5592299 | Method and apparatus for reducing the amount of data required to represent a video frame Methods and apparatus for processing digital video data to reduce the amount of video data required to represent a video frame by representing a frame or pair of field pictures into a single field of a pair of field picture are described. To prevent the s... | 01/07/1997 |
