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US 5,177,720 AGranted
Optical disc recording system
AssigneeYamaha Corporation
InventorTamon Kondo
Life of this patent
Estimating the term…
Abstract
An optical disc recording system for recording data on a writable type optical disc comprises a data signal forming circuit which causes, when program information is recorded program by program separately and with interruption and table-of-contents (TOC) information is recorded later, information at a part-of-the-way or intermediate position (intermediate information) among position information necessary for producing the TOC information to be recorded, during each interruption, at a position inside of a TOC area on an optical disc and causes this intermediate information to be read out when writing of program information is resumed for later utilization for generation of the TOC information thereby to shorten time required for generation of the TOC information.
Claims8
An optical disc recording system comprising:
- input program information means for inputting program information to be recorded;
- position information generation means for generating position information in parallel to inputting the program information;
- program information output means for delivering output program information after imparting the generated position information to the input program information means;
- program information recording control means for recording the output program information in a program area on an optical disc;
- memory means for obtaining and storing, during recording of the program information, position information necessary for generating table-of-contents information on the basis of the generated position information;
- intermediate information recording control means for reading out position information, i.e., intermediate information, stored in said memory means during interruption of recording of the program information and recording the intermediate information at a position inside from a table-of-contents area on the optical disc, the table-of-contents area having a start point and an innermost point;
- intermediate information memory control means for reading out, at resumption of recording of program information, the intermediate information recorded on the disc and storing it in said memory means;
- table-of-contents information output means for reading out the information stored in said memory means and providing this information as table-of-contents information;
- and
- table-of-contents recording control means for recording the output table-of-contents information in the table-of-contents area on the disc.
7 more elements
An optical disc recording system comprising:
- input program information means for inputting program information to be recorded;
- position information generation means for generating position information in parallel to inputting the program information;
- program information output means for delivering output program information after imparting the generated position information to the input program information means;
- program information recording control means for recording the output program information in a program area on an optical disc;
- memory means for obtaining and storing, during recording of the program information, position information necessary for generating table-of-contents information on the basis of the generated position information;
- intermediate information recording control means for reading out position information, i.e., intermediate information, stored in said memory means during interruption of recording of the program information and recording the intermediate information at a position inside from a table-of-contents area on the optical disc, the table-of-contents area having a start point and an innermost point;
- intermediate information memory control means for reading out, at resumption of recording of program information, the intermediate information recorded on the disc and storing it in said memory means;
- table-of-contents information output means for reading out the information stored in said memory means and providing this information as table-of-contents information;
- and
- table-of-contents recording control means for recording the output table-of-contents information in the table-of-contents area on the disc,
- wherein said intermediate information recording control means records information from the start point of the table-of-contents area inwardly by rotating the optical disc reversely.
8 more elements
An optical disc recording system comprising:
- input program information means for inputting program information to be recorded;
- position information generation means for generating position information in parallel to inputting the program information;
- program information output means for delivering output program information after imparting the generated position information to the input program information means;
- program information recording control means for recording the output program information in a program area on an optical disc;
- memory means for obtaining and storing, during recording of the program information, position information necessary for generating table-of-contents information on the basis of the generated position information;
- intermediate information recording control means for reading out position information, i.e., intermediate information, stored in said memory means during interruption of recording of the program information and recording the intermediate information at a position inside from a table-of-contents area on the optical disc, the table-of-contents area having a start point and an innermost point;
- intermediate information memory control means for reading out, at resumption of recording of program information, the intermediate information recorded on the disc and storing it in said memory means;
- table-of-contents information output means for reading out the information stored in said memory means and providing this information as table-of-contents information;
- and
- table-of-contents recording control means for recording the output table-of-contents information in the table-of-contents area on the disc,
- wherein said table-of-contents recording control means records the table-of-contents information by rotating the optical disc reversely after completion of writing of program information for detecting synchronization of a start portion of program information and supplying a record signal of table-of-contents information in a reverse direction in such a manner that the timing of the table-of-contents information agrees with the detected synchronization.
8 more elements
Dependencies are inferred from the claim text.