JPS6383986A - Disk player - Google Patents

Abstract

PURPOSE:To automatically start playing from a piece of music following the piece of music whose playing is terminated at the preceding time, by specifying a compact disk CD by a retrieving means and issuing an operation signal to a pickup in accordance with data recorded in a memory on the basis of its disk code by a comparator after the CD set and the start of a prescribed operation is indicated. CONSTITUTION:Address information (TOC) read from a CD by a pickup 1 is inputted to a disk retrieving means 2. This means 2 consists of a TOC reading circuit 3 and a disk code generating circuit 4. A comparator 5 reads the preceding playing time by the disk code of the CD, which will be played at the current time, in accordance with the output of the means 2 and contents of a memory 6, where disk codes and a latest playing time table are registered, and inputs it to a pickup moving means 7. The moving means 7 drives a pickup driving circuit 8 by this input signal to move the pickup 1 to a prescribed position for current playing.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a disc player that can play compact discs (hereinafter referred to as CDs) on which address information is recorded.

(Prior art and its problems) When a conventional disc player plays a CD, the number of songs on each CD is set in a program, and the program automatically plays the music, or the music is selected manually. and played the desired song.

Therefore, in order to start playing the next song from the last song you played on your CD, you can either record the disc code of the last song you played and set the program for the song you want to play this time based on this record, or manually. The only way to do this is to select the songs, which is a very time-consuming process.

(Means for Solving the Problems) An object of the present invention is to solve the above-mentioned problems and provide a disc player that can easily play the next song following the previous play.

That is, a search means for searching whether or not the player has played the CD to be played; a backup memory (hereinafter referred to as memory) for recording the disc code of the CD for which the player has played and the last playing time of the disc code; The disc player is provided with a comparator that compares the search output of the search means and the recorded content of the memory.

(Function) As described above, if a previously played CD is set and a predetermined operation is instructed to start, the retrieval means will identify the CD, and the comparator will operate based on the disc code of the identified CD. Since the data recorded in memory at the end of the previous performance is used to send an operation signal to the pickup moving means,
Playback will automatically start from the song following the song that was played last time.

(Embodiment) FIG. 1 is a circuit block diagram of a disc player of the present invention. The address information (TOC) read from the CD by Pinkup 1 is input to the disc search means 2. The disc search means 2 consists of a TOC reading circuit 3 and a disc code generating circuit 4. Based on the output of the disc code generation circuit 4 and the contents of the memory 6 in which the disc code and final performance time table are registered, the comparator 5 reads out the previous performance time of the CD to be played this time based on the disc code of the CD. , and inputs this result to the pickup moving means 7. The moving means 7 drives the pickup drive circuit 8 based on this input signal, and moves the pickup 1 to a predetermined position for the current performance.

FIG. 2 is a flowchart of the above-mentioned operation, and when the operation start signal is input, the CD starts rotating.

1st step: Pickup l is T on the CD.

C is input to the TOC reading circuit 3 and the TOC is read.

Second step: From the read address information, the disc code generation circuit 4 creates a disc code for the CD currently in use.

Third step 2 The comparator 5 compares the created disc code with the disc code of the CD registered in the memory.

Fourth step: As a result of the comparison, if it is registered in the memory, the process goes to the fifth step, and if it is not registered, the process goes to the tenth step.

Fifth step: Input the final performance time of the CD registered in the memory from the comparator 5 to the moving means 7.

Sixth step: The pickup drive circuit 8 moves the pickup 1 to the position where the previous performance ended.

Seventh step: Start playing.

Eighth step: End the performance.

Ninth step: Register the performance time in the memory 6.

Tenth step: If the disc code of this CD is not registered in the memory 6, register the disc code of this CD in the memory 6.

Eleventh step: The playing time zero of the CD with this disc code is transmitted from the comparator 5 to the moving means 7.

Twelfth step: The pickup drive circuit 8 moves the pickup 1 to the initial performance position.

Thereafter, the seventh step is entered and the performance begins.

The data registered in the memory 6 is compressed by encoding the number of songs on each CD played up to the previous time, the playing time per song, the maximum playing time, minimum playing time, variance, etc. of this CD. It is carried out.

(Effects of the Invention) As described above, the disc player of the present invention backs up the CD's unique disc code and its playing time, so that even after the power is turned on, the previous performance of the CD can be played without complicated operations. You can continue playing from where you left off.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram of a disc player according to the present invention, and FIG. 2 is a flowchart of its operation. 1: Pickup, 2: Disk search means, 3: TO
C reading circuit, 4: Disc code generation circuit, 5:
Comparator, 6: Memory, 7: Moving means, 8: Pick-up drive circuit.

Claims (1)

[Claims] In a disc player capable of reading time information recorded on a compact disc using a signal detector, a search means for searching whether or not the player has played the compact disc to be played, and the disc code and the disc code of the compact disc that has been played. A disc player comprising: a backup memory for recording the performance time of the last performance; and a comparator for comparing the search output of the search means with the recorded content of the backup memory.