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Abstract

A first data storing and outputting apparatus includes a coding unit for coding data of a program through N coding processes and generating N sets of coded data of the program, N being a natural number more than one, a memory for storing the N sets of coded data of the program, and a reading and outputting circuit responsive to a request for selectively reading and outputting one of the N sets of coded data of the program from the memory. A second data storing and outputting apparatus includes a first coder for coding data of a program according to a first coding process and generating first coded data of the program, a memory for storing the first coded data of the program, a reading circuit responsive to a request for reading the first coded data of the program from the memory, a decoder for decoding the first coded data of the program from the memory, a second coder for coding an output of the decoder according to a second coding processing and generating second coded data of the program, a data rate adjusting circuit for adding dummy data to the first coded data from the memory and outputting third coded data having a data rate higher than a data rate of the first coded data, and a switch for outputting either of the first coded data from the memory, second coded data, or the third coded data according to a predetermined condition.

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First Claim