System for encoding sound recordings for high-density storage and high-speed transfers
First Claim
1. A system for producing on a high-density digital storage medium a plurality of addressable data files representing respective high-fidelity audio programs, said system comprising:
- A. data processing means for processing data and for generating indicia data characterizing said audio programs,B. playback means for producing high-fidelity audio signals representing said audio programs,C. high-efficiency encoding means for converting said audio signals to encoded digital audio data having a high-density information content adapted for subsequent reproduction at multiples of real time,D. interface means for interfacing said encoding means and said data processing means, said interface means including data blocking means for generating formatted data blocks of said encoded digital audio data and for transmitting said data blocks to said data processing means, andE. memory means responsive to said data processing means for storing said data blocks and corresponding indicia data thereby defining said addressable data files representing said plurality of audio programs.
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Accused Products
Abstract
Method and apparatus for addressably writing digital representations of high-fidelity sound recordings in a non-mapped digital storage device, such as a CD music ROM, using conventional PCM (pulse code modulated) equipment, but in a more condensed and efficiently sampled ADM (adaptive delta modulated) format thereby providing high-density addressable storage of several thousand recordings in a single music ROM jukebox as well as high-speed information transfers. The invention enables communication and control links between conventional digital audio processors and conventional microcomputers. Timing data is embedded in the ADM formatted and blocked data file. The microcomputer is utilized for editing ADM data, inserting catalog data, and transferring the data file to a standard PCM file writer suitable for making non-mapped CD music ROMs containing addressable ADM data files on conventional equipment utilized in the indstry. Encoding is performed by Dolby delta-link ADM encoding to achieve time-domain condensation of information content, and analog signals representing the sound recording are peak-limited prior to preprocessing by Dolby B noise reduction techniques. CD music ROMs produced thereby are utilized in high-speed reproduction systems or for addressable computer access in high-volume archival storage systems.
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Citations
26 Claims
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1. A system for producing on a high-density digital storage medium a plurality of addressable data files representing respective high-fidelity audio programs, said system comprising:
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A. data processing means for processing data and for generating indicia data characterizing said audio programs, B. playback means for producing high-fidelity audio signals representing said audio programs, C. high-efficiency encoding means for converting said audio signals to encoded digital audio data having a high-density information content adapted for subsequent reproduction at multiples of real time, D. interface means for interfacing said encoding means and said data processing means, said interface means including data blocking means for generating formatted data blocks of said encoded digital audio data and for transmitting said data blocks to said data processing means, and E. memory means responsive to said data processing means for storing said data blocks and corresponding indicia data thereby defining said addressable data files representing said plurality of audio programs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for enabling production of a CD music ROM containing a plurality of addressable data files representing respective high-fidelity audio programs, said system comprising:
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A. video format storage means for storing said addressable data files, B. data processing means for processing data and for generating catalog and pricing data characterizing respective ones of said audio programs, C. playback means for producing high-fidelity analog audio signals representing said audio programs, D. Dolby encoding means for encoding said analog audio signals thereby to generate plural digital data streams representing audio programs, said data streams being generated at different bit rates, E. interface means for interfacing said Dolby encoding means and said data processing means, said interface means including data blocking means for generating formatted data blocks of said plural digital data streams and for transmitting said data blocks to said data processing means, and F. said data processing means including means for storing said data blocks including said catalog and pricing data in said video format storage means for subsequent storage on a CD music ROM containing said addressable data files representing said plurality of audio programs. - View Dependent Claims (14, 15, 16)
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17. An apparatus for making a premastered digital representation of an audio program comprising:
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A. data processing means for processing digital data, B. dolby processing means for converting said audio program to ADM signals representative of said audio program, said ADM signals comprising a plurality of digital data streams of different bit rates, C. interface means for converting said digital ADM signals to a format compatible with said data processing system, said interface means including means for generating timing data for said dolby processing means thereby to synchronize the operation of said interface means and said dolby processing means, and D. said data processing means utilizing said timing data for storing and handling data blocks representing said data file of the premastered recording of said audio program. - View Dependent Claims (18, 19, 20, 21)
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22. A method for producing a plurality of addressable digital data files on a non-mapped information storage media wherein each data file represents a high-fidelity sound recording, said method comprising the steps of:
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A. generating analog signals representing said high-fidelity sound recording, B. digitally encoding said analog signals to form digital audio data, C. generating n-bit data segments representing said digital audio data, D. appending to each n-bit data segment an m-bit sync code substantially unique from m-bit sequences in said data segments, and E. supplying said data segments and said sync code to a data processing system and writing a data file comprising digital representations of said audio programs which are retrievable according to said sync codes. - View Dependent Claims (23, 24, 25, 26)
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Specification