Information recording apparatus and information reproducing apparatus

Claim 1

An apparatus (S1) for recording record information, which includes video information and audio information and which are divided into a plurality of partial pieces of information in accordance with a predetermined content type of the record information in advance, to a record medium (DKS), characterized in that said apparatus comprises: a first signal process unit (301), to which the record information is inputted, for compressing a video signal based on the video information by every predetermined compression unit (GOP) to generate a compression video signal, and for dividing and multiplexing an audio signal, which is based on the audio information in correspondence with the video information, and the compression video signal respectively by every predetermined multiplexing unit (P: packet), to output a compression multiplexed signal (Sr) which is a signal that the divided audio signal and the divided compression video signal are time-multiplexed; a second signal process unit (302) for detecting a position in the record information of the video information corresponding to the video signal included in each compression unit to output a position signal (Sp) for each compression unit; a third signal process unit (303) for detecting a reproduction time in a case of reproducing each of the partial pieces of information to generate a content information signal (Sac) corresponding to content information indicating the detected reproduction time and the content type of the partial piece of information; an addition information generating means (6) for generating reproduction addition information including elapsed time information, which indicates an elapsed time within each of the partial pieces of information at a time of reproducing each of the partial pieces of information and which is reset at a lead portion of each of the partial pieces of information, and the time-axis information, which is counted from a beginning of the record information and which corresponds to the elapsed time, on the basis of the generated content information signal, to output a reproduction addition information signal (Sa); a multiplexing means (6, 7) for multiplexing the reproduction addition information signal and the compression multiplexed signal for each of the compression unit in the compression multiplexed signal, such that the reproduction addition information signal is included in the multiplexing unit, which is within the compression unit and which is different from that including the audio or video compression signal, to output an information multiplexed compression signal (Sap), on the basis of the generated position signal; and a recording means (8, 9) for recording the information multiplexed compression signal to the record medium.

Claim 4

An apparatus (S1) according to any one of claims 1 to 3, characterized in that: said third signal process unit (303) further detects a start position of each of the partial pieces of information in the record information, to generate the content information signal (Sac) corresponding to the content information indicating the detected start position in addition to the detected reproduction time and the content type; said addition information generating means (6) further generates construction addition information including reproduction time information corresponding to the reproduction time and start position information corresponding to the start position for each of the partial pieces of information, to output a construction addition information signal (Sa); and said multiplexing means (6, 7) adds the construction addition information signal to the compression multiplexed signal such that the construction addition information signal is timely separated from the compression multiplexed signal.

Claim 6

An apparatus (S2) for reproducing record information, which are divided into a plurality of partial pieces of information in accordance with a predetermined content type of the record information in advance, and reproduction addition information from a record medium (DK) on which the record information and the reproduction addition information are multiplexed by every predetermined multiplexing unit (P: packet), said reproduction addition information including elapsed time information, which indicates an elapsed time within each of the partial pieces of information at a time of reproducing each of the partial pieces of information and which is reset at a lead portion of each of the partial pieces of information, and a time-axis information, which is counted from a beginning of the record information for every predetermined multiplexed unit and which corresponds to the elapsed time, characterized in that said apparatus comprises: a detecting means (10) for detecting the record information and the reproduction addition information from said record medium and outputting a detection signal indicating the detected information (Spu, Sb); an extracting means (12, 13) for extracting, from the detection signal, a reproduction addition information signal (Ssj) corresponding to the detected reproduction addition information; a reproducing means (11, 12, 13) for reproducing the record information on the basis of the detection signal; and a total elapsed time calculating means (20) for, on the basis of the extracted reproduction addition information signal, adding the elapsed time within each of the partial pieces of information at a reproducing order to calculating a total elapsed time corresponding to the reproduced record information, and outputting a total elapsed time signal (Sat).

Claim 9

An apparatus (S2) according to any one of claims 6 to 8, characterized in that the partial pieces of information have a mutual relationship along a time axis in the record information and at least a first partial piece of which has such a mutual relationship that a second partial piece thereof non-consecutive to the first partial piece along the time axis is to be reproduced prior to a third partial piece thereof consecutive to the first partial piece on the time axis after the first partial piece is reproduced.

Claim 10

An apparatus (S2) according to any one of claims 6 to 9, characterized in that construction addition information is added to the record information on the record medium, said construction addition information including reproduction time information corresponding to a reproduction time and start position information corresponding to a start position for each of the partial pieces of information, said detecting means (10) detects the construction addition information in addition to the record information and the reproduction addition information from said record medium according to a control signal, said extracting means (12, 13) further extracts, from the detection signal, a construction addition information signal (Sij) corresponding to the detected construction addition information, said apparatus further comprises: an information detection means (20) for detecting, on the basis of the extracted construction addition information signal, the partial piece of information which includes the record information corresponding to a reproduction position where the reproduction is to be started according to an instruction inputted from the external, said reproduction position being specified with respect to the start position of the record information; and a control means (20) for generating and outputting to said detecting means, the control signal (Sx) to move said detecting means to a position on the record medium corresponding to the reproduction position within the detected partial piece of information and to reproduce the partial piece of information corresponding to the reproduction position.

Claim 11

An apparatus (S2) according to any one of claims 6 to 9, characterized in that construction addition information is added to the record information on the record medium, said construction addition information including start position information corresponding to a start position for each of the partial pieces of information, said detecting means (10) detects the construction addition information in addition to the record information and the reproduction addition information from said record medium according to a control signal, said extracting means (12, 13) further extracts, from the detection signal, a construction addition information signal (Sij) corresponding to the detected construction addition information, said apparatus further comprises: a position detection means (20) for detecting, on the basis of the extracted construction addition information signal, the start position of the partial piece of information which includes a reproduction position where the reproduction is to be started according to an instruction inputted from the external, said reproduction position being specified with respect to the start position of the record information; and a control means (20) for generating and outputting to said detecting means, the control signal (Sx) to move said detecting means to a position on the record medium corresponding to the reproduction position within the detected start position and to reproduce the partial piece of information corresponding to the reproduction position.