Downloading of personalization layers for symbolically compressed objects

• US 6,088,484 A
• Filed: 11/08/1996
• Issued: 07/11/2000
• Est. Priority Date: 11/08/1996
• Status: Expired due to Term

• Current Assignee: Hughes Electronics Corporation (AT&T, Inc.)
• Original Assignee: Hughes Electronics Corporation (AT&T, Inc.)
• Inventors: Mead, Donald C.
• Primary Examiner(s): Couso, Jose L.
• Application Number:
  US08/745,586
• Time in Patent Office: 1,341 Days
• Field of Search: 382/253, 382/232, 382/233, 382/240, 382/241, 382/242, 382/243, 382/245, 382/118, 382/190, 382/305, 348/14, 348/15, 348/17, 348/19, 392/500
• US Class Current: 382/232
• CPC Class Codes: G10H 1/0058 Transmission between separate instruments or between individual components of a musical system G10H1/0083 takes precedence
• CPC Class Codes: G10H 2240/056 MIDI or other note-oriented file format
• CPC Class Codes: G10H 2250/221 Cosine transform; DCT [discrete cosine transform], e.g. for use in lossy audio compression such as MP3
• CPC Class Codes: G10H 2250/235 Fourier transform; Discrete Fourier Transform [DFT]; Fast Fourier Transform [FFT]
• CPC Class Codes: G10H 2250/241 Hadamard transform, Walsh-Hadamard transform, Hadamard-Rademacher-Walsh transform, Walsh transform, or Walsh-Fourier transform
• CPC Class Codes: H04N 19/23 with coding of regions that are present throughout a whole video segment, e.g. sprites, background or mosaic
• CPC Class Codes: H04N 5/145 Movement estimation for video coding H04N19/51

Abstract

A method and apparatus for transferring data signals with personalization layers for symbolically compressed objects comprises a transmitter having an encoder and a receiver having a decoder. The encoder includes a segment selector for identifying signal segments from a group of speech, audio, video, and graphic signals, each segment comprising a representation of a physical waveform. The encoder includes a plurality of encoder libraries, one of the libraries containing the representation of a generic waveform and a symbolic code for the generic object. The decoder has a second plurality of libraries corresponding to the plurality of encoder libraries, and contain the generic waveform, the symbolic code corresponding to the generic physical waveform, and the difference information quantity as a personalization layer of data representing the difference between the generic object code and the waveform from which the generic object was extracted.

Claims

1. A system for transferring a direct broadcast satellite transmitter having an encoder and a direct broadcast satellite receiver having a decoder, comprising:

said encoder including a segment selector for identifying a signal segment from the group of speech, audio, video and graphic signals, each selected segment comprising a representation of an information quantity;

wherein said encoder includes a plurality of encoder libraries, one of said libraries containing a representation of a generic information quantity partly corresponding to said information quantity, a symbolic code for the representation of said generic information quantity, and a difference signal personalization layer including the difference between said information quantity and said generic information quantity; and

said decoder having a second plurality of libraries corresponding to said plurality of encoder libraries, and one of said decoder libraries containing said generic information quantity, said symbolic code corresponding to said generic information quantity and said difference signal personalization layer.

2. The invention as defined in claim 1 wherein said encoder includes a header encoder for preparing said difference signal as a header, and a transmitter for transmitting said header at a beginning of a transmission session.

15. The invention as defined in claim 1 wherein said encoder encodes and said decoder decodes video, speech general audio and graphics into a single A/V bitstream.

16. The invention as defined in claim 1 wherein said system includes a multiplexer that transmits personalization for all segments of said group as a header for the session.

17. The invention as defined in claim 16 wherein said decoder temporarily stores the personalization information from the session header in a guest personalization library in the decoder.

18. The invention as defined in claim 15 wherein said A/V stream includes the text of speech.

3. A direct broadcast satellite system for encoding a signal into a bit stream, the signal representing of data including data representing at least one object, the system comprising:

a segment selector for selecting feature quantities of a data information signal from aural or visual information signals;

an object encoder with a generic object library, said library assigning a symbolic code to a generic object portion contained in the at least one object frame, wherein the symbolic code identifies a corresponding generic object from a set of generic objects in said generic object library, and a second library coupled to the object encoder containing a personalized signal portion computed as the generalized difference signal between said generic object portion and said data information signal;

a processor combining said personalized signal portion and said generic object portion.

4. The system of claim 3 wherein the library includes a first storage device which contains the set of generic objects.

5. The system of claim 4 wherein the library of the encoder stores said personalized signal portion as an object in the first storage device.

6. The system of claim 3 wherein the object encoder includes a visual image segment with at least one video image frame segmented into at least one object.

7. The system of claim 3 wherein the encoder includes a feature extractor which forms at least one feature quantity for the object.

8. The system of claim 7 wherein the encoder includes a classifier, coupled to the feature extractor, which determines the corresponding generic object based upon the at least one feature quantity.

9. The system of claim 3 further comprising a mapper which forms a transformed signal in dependence upon the video signal, and provides the transformed signal to the object encoder.

10. The system of claim 3 further comprising a variable length coder, coupled to the processor which provides a variable length coding of the bit stream.

11. The system of claim 3 further comprising a motion estimator which performs a comparison of a first video frame to a second video frame, and provides a representation of the comparison to the multiplexer.

12. A method of encoding a signal representative of a sequence of at least one feature from an aural or visual signal representation into a bit stream, the method of comprising the steps of:

segmenting said sequence into objects and unrecognized features;

assigning a symbolic code to an object contained in the at least one feature, wherein the symbolic code identifies a corresponding generic object from a set of generic objects in a generic object library;

determining the difference between said object and said corresponding generic object and coding this difference as a personalization layer; and

multiplexing the coded difference and the symbolic code to form the bit stream containing a generic object and a personalization layer.

13. A system for reconstructing an information sequence with at least one feature from a bit stream representative of an encoded signal having symbolic codes and difference signals distinguishing a complete object from a generic object, the system comprising:

a demultiplexer which extracts said symbolic code and said difference signal from the encoded signal, wherein the symbolic code identifies a corresponding generic object from a set of generic objects in a generic object library; and

an object generator, coupled to the demultiplexer, which forms the sequence by generating the corresponding generic object identified by the symbolic code from the generic object library, and modifying the corresponding generic object in dependence upon the difference signal.

14. A method of reconstructing an information sequence with at least one feature from a bit stream representative of a sequence of at least one feature from an aural or visual signal representation signal, the method comprising the steps of:

extracting a symbolic code and a difference signal from the representation signal, wherein the symbolic code identifies a corresponding generic object from a set of generic objects in a generic object library and said difference signal identifies a personalization layer portion of said at least one feature for modifying said corresponding generic object;

generating the corresponding generic object in dependence upon the symbolic code from said generic object library; and

generating a sequence of at least one feature from the corresponding generic object and said difference signal.