Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Control of information signal processing channel
Reexamination Certificate
1999-04-27
2001-07-17
Edun, Muhammad (Department: 2651)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Control of information signal processing channel
C369S047210
Reexamination Certificate
active
06262956
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a recorded information reproducing apparatus and, more particularly, to a recorded information reproducing apparatus of a recording medium, for example, a CD Text disc for digital audio on which text information is recorded in a subcode data associated with main data such as audio data, visual data, or the like.
2. Related Background Art
Hitherto, in case of reproducing desired data on a recording medium such as a CD Text on which text information corresponding to a plurality of languages has been recorded as subcode data, a plurality of text information blocks are preliminarily read and information on the block of a desired language is extracted from the read text information. There arises a problem that it takes time until the data of the desired language is obtained and a memory area for storing a plurality of information blocks is required. That is, it is a subject how fast the block of the desired language on the recording medium is accessed from viewpoints of saving of a capacity of RAM (Random Access Memory) provided in the reproducing apparatus and reduction of a data reading time.
OBJECT AND SUMMARY OF THE INVENTION
The present invention is made from the consideration of the above-mentioned points and it is an object of the invention to provide a recorded information reproducing apparatus wherein an information block of a desired language can be accessed in a short time, thereby memory in the reproducing apparatus can be saved and a data reading time can be reduced, when a recording medium on which character data of a plurality of languages has been recorded in each block as subcode data like a CD Text is reproduced.
According to the present invention, there is provided a recorded information reproducing apparatus for reading text information included in subcode data associated with main data from a recording medium and for displaying the text information, wherein each of the text information of a plurality of languages and the corresponding size information segment are contained in individual one of a series of information blocks recorded on the medium, and wherein each of the size information segments includes index information corresponding to each of the text information, comprising: means for reading one of the size information segments prior to reading the text information; means for storing the read size information segment; means for calculating a block position where desired text information has been recorded on the basis of the stored size information segment; and means for determining a reading position on the recording medium on the basis of the calculated block position.
REFERENCES:
patent: 5280572 (1994-01-01), Case et al.
patent: 5825731 (1998-10-01), Yokota
Edun Muhammad
Morgan & Lewis & Bockius, LLP
Pioneer Electronic Corporation
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