Abstract: An apparatus for reproducing a digitally encoded signal from a disk medium, comprises a transducerwhich transduces the digitally encoded signal. A memory is coupled to the transducer for storing the digitally encoded signal. A decoder is responsive to the digitally encoded signal for decoding a picture therefrom. A controller for the memory, wherein a first operational mode the controller controls the memory to read the stored digitally encoded signal from the memory responsive to a first sequence and in a second operational mode the controller controls the memory to read the stored digitally encoded signal from the memory in a second sequence.

Abstract: In an digital video disk player the timely acquisition of specific data types is particularly important during trick mode operation. During trick modes a controller can provide enhanced control capability by employing interrupt requests having priorities that differ from those used during normal play mode operation. A method for controlling a microcontroller in digital disk apparatus having at least two reproducing modes. The method comprises the steps of prioritizing the microcontroller interrupts during a first reproducing mode, and in a second reproducing mode reordering the microcontroller interrupt priorities.

Abstract: An apparatus for reproducing a digitally encoded signal from a medium, comprises a transducer for transducing the digitally encoded signal and generating a bit stream therefrom. A processor is coupled to receive the bit stream for controllably processing the bit stream. A memory is coupled to the processor for storing the processed bit stream information. A controller is coupled to control the memory and the processor for controlling identification of information within the bit stream, wherein the controller controls the processor to identify a specific sector type in the bit stream and responsive to the specific sector identification the controller controls the memory for storing the identified specific sector.

Abstract: An MPEG decoder in a high definition television receiver decodes and decompresses MPEG coded data to produce decompressed image pixel blocks, and includes a motion compensation network coupled to a frame memory to produce finally decoded pixel data for display. The decompressed MPEG data is recompressed by plural parallel recompressors prior to storage in frame memory. Each recompressor receives a datastream of interleaved pixel data, and predicts and compresses interleaved pixel values during each clock cycle, respectively. One of the recompressors is de-energized in a reduced data processing mode when pixel data is subsampled prior to recompression. Subsampled data is re-ordered prior to recompression. Multiple parallel decompressors coupled to the frame memory provide pixel data to the motion processing network. A control unit insures an uninterrupted interleaved data flow to the decompressors by repeating last valid data when source data is interrupted.

Abstract: In an digital disk player the timely acquisition of requested replay sectors is particularly important during trick mode operation. Delay in a transduced bitstream path is substantially obviated from the process of controlling a transducer position during replay by a method comprising the steps of receiving a first and a second transducer address for controlling the transducer position responsive to a replayed address. Comparing the replayed address with the first transducer address to detect equality therebetween. In response to the detected equality moving the transducer to a new position determined by the second transducer address.

Abstract: A method for controlling MPEG compatible data reproduced in sectors by a digital video disk player. The method comprises the steps of transducing groups of sectors including requested sectors having MPEG compatible data required for processing, and unrequested sectors having MPEG compatible data not required for processing. Coupling the requested sectors exclusive of the unrequested sectors to a data processor for processing. Processing the requested data sectors to extract the required MPEG compatible data representative of video information.

Abstract: An apparatus for reproducing a digitally encoded signal from a disk medium, comprises a transducer which transduces the digitally encoded signal. A memory is coupled to the transducer for storing the digitally encoded signal. A decoder is responsive to the digitally encoded signal for decoding a picture therefrom. A controller for the memory, wherein a first operational mode the controller controls the memory to read the stored digitally encoded signal from the memory responsive to a first sequence and in a second operational mode the controller controls the memory to read the stored digitally encoded signal from the memory in a second sequence.

Abstract: Video processing image manipulation and trick play modes provide seamless normal play and trick play functioning. Specifically, a system processes video data including encoded digital packetized data representative of a sequence of individual images and ancillary data identifying characteristics of the individual images. The system involves a pre-processor for parsing the ancillary data to determine characteristics of the individual images prior to storing the encoded digital packetized data. The system also includes a multiplexer for filtering the encoded digital packetized data based on the determined characteristics to identify particular images of the image sequence for storage in a memory and for excluding other images of the sequence from storage.

Abstract: An apparatus for reproducing a digitally encoded signal from a disk medium, comprises a source of a bitstream representative of the digitally encoded signal. A processor is coupled to the bitstream for processing the bitstream to extract at least a first and a second data type represented therein. A memory is controllably coupled to the processor for storing one of the first and a second data types. A controller is coupled to control allocation of the memory, wherein a first reproducing mode the controller allocates the memory for storing the first data type, and in a second reproducing mode the controller allocates the memory for storing the second data type.

Abstract: A method for picture decoding and display in an apparatus reproducing from a digital disk. The method comprises the steps of transducing a digitally encoded signal from the disk. Storing the digitally encoded signal in a first memory. Decoding the digitally encoded signal to produce a picture. Storing the picture in a second memory. Coupling the picture from the second memory for display. Controling the storing in the second memory and the coupling for display to occur substantially concurrently.