JPH0734531Y2 - Video disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a video disc reproducing apparatus capable of reproducing only a chapter to be reproduced according to selection of the chapter to be reproduced.

(Prior Art) Conventionally, an operation panel that can select a chapter to be reproduced is provided.
In a video disc player capable of reproducing only a chapter selected according to the selection of a reproduction chapter on the operation panel, the rotation of the player is stopped when the reproduction of one program is completed, and the next program is selected. Then, the player starts rotating again. In this case, the breaker does not start playing immediately when the select key is pressed. This is because the disc is played at a high speed, and it takes 10 to stabilize from the stopped state of the disc to the number of revolutions during playback (900 rpm for VHD system, 1800 rpm for optical system). This is because it takes about a second.

Therefore, during that time, the operation author is kept waiting without obtaining the image and sound.

(Purpose of the Invention) The present invention has been made in view of the above situation, and in order to eliminate the waiting time of several seconds described above, the player continues to rotate even after the reproduction of one program is completed, and the next program is reproduced. It is an object of the present invention to provide a video disc reproducing apparatus having a function of immediately starting reproduction of video and audio when selected.

(Structure of Device) With the structure of the present invention, when the reproduction of one selected chapter among the information recorded on the disc is completed, the turntable of the player continues to rotate at the same constant speed as the reproduction. The stylus is raised by the holding means from the disk surface, and when the next chapter is selected, the control means returns the stylus to a predetermined position on the disk surface.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The drawing shows a schematic block diagram of a video disc reproducing apparatus according to the present invention.

The video signal recorded on the video disc is detected by the pickup circuit 1 and output to the video signal processing circuit 2 and the tracking servo circuit 4. The tracking servo circuit 4 separates the signal required for tracking control from the video signal input from the pickup circuit 1, and based on this signal, a stylus (not shown).
Deviation from the track center is detected, and the pickup circuit 1 is controlled so that the stylus traces the center of the track. In addition, the tracking servo circuit 4
Controls the pickup circuit 1 so that the stylus moves to a predetermined track in response to a signal output from the player control unit 5 during special reproduction such as random access or still or slow motion.

On the other hand, the video signal input to the video signal processing circuit 2 is demodulated here and separated into a video signal component, an audio signal component, and an address signal component. The video signal component is subjected to dropout correction and time base correction, then converted into a standard color television signal and output to the video terminal 12. The audio signal component is output to the audio signal processing circuit 3, FM demodulated by the audio signal processing circuit 3, and then output to the audio terminals 10 and 11 as a 2-channel audio signal. The address signal component is output to the player control section 5. The player control section 5 outputs a signal for properly controlling the operation to the video signal processing circuit 2, the audio signal processing circuit 3, the tracking servo circuit 4, and the motor control circuit 6, and also to the system control section 7. It outputs the signals required for control. Motor control circuit 6
Controls a turntable drive motor (not shown) so that the disc on the turntable (not shown) rotates at a high speed and at a constant speed, and starts and activates the turntable by a signal output from the player control section 5. It controls the stop. The system control unit 7 is composed of a microcomputer and receives the signal from the operation input unit 8 and the signal from the player control unit 5 to properly control the player control unit 5. The operation input unit 8 includes a play key, a fast forward key, a fast rewind key, a stop key, etc.
A chapter selection key is provided.

Next, the operation of the video disc reproducing apparatus according to the present invention will be described.

Insert the disc on the turntable of the player and press the play key of the operation input unit 8. Next, by pressing the chapter selection key, one chapter desired by the operator is selected from the information recorded on the disc, and the reproduction is started. When the reproduction of this chapter ends, a signal for confirming the end of reproduction is output from the player control unit 5 to the system control unit 7. Receiving this signal, the system control unit 7 outputs to the player control unit 5 a rotation continuation signal for continuing the rotation of the turntable and a rising start signal for lifting the stylus from the disc reproducing surface. The player control unit 5 controls the motor control circuit 6 based on the rotation continuation signal so that the turntable continues to rotate at the same constant speed as during reproduction, and also reproduces the stylus on the disk based on the rising start signal. The tracking servo circuit 4 is controlled so as to be lifted from the surface and kept in a separated state. When the operator again presses the chapter selection key of the operation input unit 8 to select a new chapter, the system control unit 7 outputs a descent start signal to the player control unit 5, and the player control unit 5 starts this descent. Based on the signal, the tracking servo circuit 4 is controlled so that the stylus contacts the disc reproducing surface again. In this case, since the turntable continues to rotate at the same constant speed as during playback, the stylus in contact with the disc playback surface immediately starts random access and instantly plays back the selected chapter.

(Effect of the Invention) As described above, according to the video disc reproducing apparatus of the present invention, the rotation of the turntable is continued from the end of the reproduction of one chapter to the selection of the next chapter. At the same time, since the detection needle is held at the upper position away from the disc playback surface, when the next chapter is selected in this state, the detection needle is rotated simply by lowering it. Since it can be brought into contact with the playback surface of the disc that is being played, the number of seconds from when the chapter is selected until the disc rotation reaches a constant speed can be shortened, and it can be selected immediately within a few seconds required for random access. It is possible to start the reproduction of the chapter that has been made.

[Brief description of drawings]

The drawing is a schematic block diagram of a video disc reproducing apparatus according to the present invention. 1 ... Pickup circuit 2 ... Video signal processing circuit 3 ... Audio signal processing circuit 4 ... Tracking servo circuit 5 ... Player control section 6 ... Motor control circuit 7 ... System control section 8 ... Operation input section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-58-211359 (JP, A) JP-A-57-89118 (JP, A) JP-A-59-33669 (JP, A) JP-A-58- 5799 (JP, A) Actual development Sho 58-57174 (JP, U) Actual public 57-47987 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A video disc player having an operation panel capable of selecting a chapter to be reproduced, and reproducing a chapter selected in accordance with the selection of a reproduction chapter on the operation panel, even when reproduction of the selected chapter is completed. A rotation continuation means for continuously rotating the turntable at the same constant speed as during reproduction, and a holding means for holding the detection needle at an upper position apart from the disc reproduction surface when the reproduction of the selected chapter is completed, When a different chapter is selected, the detecting needle held by the holding means at an upper position apart from the disc reproducing surface is lowered to contact the disc reproducing surface, random access is started, and the selected new chapter is selected. And a control means for controlling to reproduce the video disc.