JPH0393082A - Reproducing device - Google Patents

Abstract

PURPOSE:To continuously reproduce and edit plural recording media with a small storage capacity by providing a storage means for storing in advance information (TOC information) relating to the playing period of time at every piece of music of a recording medium to be reproduced. CONSTITUTION:The TOC information at every music of plural disks 3 is detected in advance by a processing circuit 21 with a TOC information extracting circuit 22 and stored in a storage circuit 23. When editing hours are set by an operating circuit 24, the first disk 3 is commenced to be reproduced so that its pieces of music are sequentially reproduced. When the editing time is longer than total playing hours of the disk 3 under reproducing, after all pieces of music of the disk 3 are reproduced, the next disk 3 is shifted to be reproduced. At the time of reproducing the next disk 3, only total playing hours of the previous disk 3 reproduced already are stored in the storage circuit 23, and all bits of TOC information for individual pieces of music are erased out, so that TOC information for the next disk 3 to be reproduced is stored instead.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a playback device for compact discs, video discs, etc., and more specifically, for continuous playback by automatically exchanging recording bodies. This invention relates to a playback device that can be automatically changed.

Problems to be Solved by the Prior Art and Inventions Compact discs, video discs, etc. have information about the playing time called TOC (Table of Contents) recorded in the lead-in area. When recording songs on a compact disc onto a cassette tape using a compact disc player, in typical conventional technology, an empty time on the tape corresponding to the editing time is input, and the TOC information is recorded so as to fit within that time. The songs on the compact disc are selected and played based on the . Therefore, if the performance time of the compact disc is longer than the editing time, some songs will not be recorded, and if it is shorter, there will be empty space. For this reason, for example, a configuration can be considered in which a plurality of discs are stored in a magazine or the like, and these discs are taken out one after another and played continuously until the performance time is reached. , a storage means with a capacity that can store the TOC information of all stored discs is required. An object of the present invention is to provide a playback device that can continuously play back and edit a plurality of recording media with a small storage capacity.

Means for Solving the Problems The present invention provides a playback device that stores a plurality of recording media and automatically exchanges these recording media for continuous playback. a detection means for detecting in advance information regarding the performance time of each song recorded on a recording medium to be recorded; a storage means for storing the detection result of the detection means; an input means for setting the wA collection time; one recording medium. If the total performance time is less than the editing time as a result of playing all the songs, the recording medium is replaced, and the recording medium to be played next is detected by the detection means. The total performance time is stored in a storage means together with the information on the medium, and the playback is continued sequentially until the sum of the total performance time and the time based on the information is the longest within the editing time. This is a playback device characterized in that it includes a control means for.

According to the present invention, the control means uses the detection means to detect in advance information regarding the performance time of each song on the recording medium to be reproduced from among the plurality of recording media, and stores the information in the storage means. . When the editing time is set by the input means, reproduction of the first recording medium in which the information is detected is started, and the songs in the recording medium are sequentially reproduced.

If the editing time is longer than the total playing time of the recording medium being played back, after all the songs in that recording medium have been played back, the next recording medium is played back.

When playing the next recording medium, only the total playing time of the previously played recording medium is stored in the storage means, all information regarding the playing time of each song is erased, and instead,
Information about the recording medium to be reproduced next is stored.

In this way, even if all the songs in the second recording medium are played back, if the above-mentioned li collection time is not reached, the sum of the total playing time of the two recording media, the first and the second recording medium, is is stored in the storage means, information regarding the playing time of each song on the second recording medium is erased, and information on the third recording medium to be played next is stored instead. Thereafter, the playback is continued in sequence until the song for which the sum of the total performance time and the time based on the information is the longest within the editing time. Therefore, for example, if the free time on the cassette tape is longer than the total playing time on the compact disc,
The disk is replaced, and recording continues until the above editing time is reached. Also, for example, M than the total performance time of the first recording medium.
When the i collection time is shorter, from the first recording medium,
The songs up to the editing time will be played, and the remaining songs will be played.
Playback continues from the song that has exceeded the wA collection time.

Therefore, for example, if the free time on the cassette tape is shorter than the total playing time on the compact disc,
The remaining songs that could not be recorded on the cassette tape are then played back, and in this way, multiple recording media can be played back in succession to create a TI collection. Embodiment FIG. 1 is a block diagram showing the electrical configuration of a compact disc playback device W1 according to an embodiment of the present invention. Inside the magazine 2, there are a plurality of compact discs 3 as recording media.
are stored therein, and one of these compact discs 3 is selectively taken out by the changer mechanism 4 and loaded onto the turntable 5. The turntable 5 is rotationally driven by a spindle motor 6, and the information recorded on the compact disc 3 is transferred to an optical video! detected by backup 7.

The detection output of the optical pickup 7 is demodulated into an acoustic signal and ToCIr\WIg by a signal processing circuit 11. The audio signal is converted into an analog audio signal by a digital/analog conversion circuit 12, and is converted into sound from a speaker 14 via an amplifier circuit 13. The TOC information is realized by a microcomputer or the like, and is extracted by a TOC information extraction circuit 22 which is a detection means in response to an output from a processing circuit 21 which is a control means.
3 is memorized. The processing circuit 21 also operates the servo circuit 2 in response to input operations such as starting/stopping a playback operation and selecting music from an operation circuit 24 serving as an input means, and in response to an output from the signal processing circuit 11.
5 and controls the rotational speed of the spindle motor 6 and the tracking and focusing of the optical pickup 7. Furthermore, the changer mechanism section 4 is driven to change the compact disc 3, and the editing result of the editing operation described later is stored in the editing result storage circuit 26.
to be memorized. Compact disc playback device 1 shaped as described above
, the output from the amplifier circuit l3 is input to a tape recorder or the like, and editing operations are performed as shown in FIGS. 2 and 3 below. When the compact disc 3 to be played first is loaded onto the turntable 5 by the changer mechanism 4, the process moves to step no, and the previous editing result in the editing result storage circuit 26 is cleared. In step n1, the TOC information is detected and stored.

In step n2, the performance time T1 of the next song to be played is added to the total performance time T so far, the total performance time T is updated, and the process moves to step n3.

In step n3, it is determined whether or not all the songs on the compact disc 3 currently being played have finished playing.
If so, the operation ends, and if not, the process moves to step n4. In step n4, it is determined whether the total performance time T updated in step n2 exceeds the #IA collection time W set in the operation circuit 24, and if not, the process returns to step n2 and the next song is played. continues playing, and if so, terminates the operation. In this way, the songs on the compact disc 3 are played back continuously, and when the total performance time T is less than the wA collection time W and the playback of all the songs on the compact disc 3 is completed, the process moves to step nlo, where the The total performance time T is the editing result storage circuit 2
6 is stored. In step nll, after the disk is replaced, TOC information of the newly loaded disk is detected and stored. In step nl2, the total playing time T is updated in the same manner as in step n2, and in steps n13 and nl4, the same operations as in steps n3 and n4 are performed, respectively, and in step nl4, the total playing time T is updated as in step n2. It is determined whether or not the performance time T exceeds the ms time W. If so, the operation is terminated, and if not, the process returns to step nl2 and continues the reproduction operation.

Therefore, when it is necessary to replace the compact discs 3 one after another, such as when recording a compact disc 3 with a short playing time such as an 8cm disc on a long-time cassette/notetave, it is necessary to replace the compact disc 3 one after another. The editing operation is started by the operation shown in FIG. 3, and for the second and subsequent discs, the operation moves to the operation shown in FIG.

Also, discs with a relatively long playing time, such as 12 cm discs. When recording on a short cassette tape, the editing result storage circuit 26 stores the part up to the end of Collection Ii, and after changing the cassette tape, it is possible to record on the previous cassette tape. Reproduction continues from the df+ that could not be performed.

Thus, the compact disc playback device 1 according to the present invention
Now, even when playing multiple compact discs 3 continuously and performing a tilt, the TOC information of the disc currently being played and the total playing time T of the disc played earlier
Since it is possible to store TOC information for all disks, there is no need to store TOC information for all disks, and 3
! ! You can continue playing and perform tJ[.

In the above embodiment, the songs on the disc are played back sequentially, but in another embodiment of the present invention, the songs on the disc are played back sequentially based on the editing time W, total playing time T, and TOC information. Regardless of the recording order, songs suitable for the free time on the tape may be played. Effects of the Invention As described above, according to the present invention, information regarding the performance time of each song on the recording medium is detected in advance and stored in the storage means, and the #I collection time is determined by the time of the recording medium being played back. If it is longer than the total playing time, after all the songs on the recording medium have been played, only the total playing time of the recording medium is stored, all information regarding the playing time of each song is deleted, and instead Since information about the recording medium to be played next is stored, it is possible to continuously play and edit multiple recording media with a small storage capacity.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the electrical configuration of a compact disc playback device 1 according to an embodiment of the present invention, and FIGS.
The figure is a flowchart for explaining editing operations. DESCRIPTION OF SYMBOLS 1... Compact disc playback device, 2... Magazine, 3... Compact disc, 4... Changer mechanism section, 7... Optical pickup, l1... Signal processing circuit, 21... Processing circuit, 22...TOC information extraction circuit, 23...TOC information storage circuit, 24...operation circuit, 26...editing result storage circuit

Claims (1)

[Claims] A playback device that stores a plurality of recording media and performs continuous playback by automatically exchanging these recording media, comprising: a detection means for detecting in advance information regarding the performance time of each song being played; a storage means for storing the detection result of the detection means; an input means for setting an editing time; As a result of playing back all songs, if the total performance time is less than the editing time, the recording medium is replaced, and the recording medium is replaced with the information of the recording medium to be played next detected by the detection means. control means for storing a total performance time in a storage means and sequentially continuing to play a song until the sum of the total performance time and the time based on the information is the longest within the editing time; A playback device characterized by: