JP2521273Y2 - Disc playback device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus having two search buttons for a feed direction and a return direction.

[0002]

2. Description of the Related Art For example, in a compact disc player,
Such a search button is provided. In such a player, by operating any search button, high-speed reproduction according to the button is executed. This high speed playback continues only while the button is operated. The speed of high speed playback is constant. The user sequentially recognizes the reproduction position by relying on the audio output during high-speed reproduction or the reproduction time display. Then, when the reproduction position reaches the desired position, the button operation is released.

According to such a device, high-speed reproduction is performed at a relatively low speed of about 5 times the normal reproduction speed. Therefore, if the search start position is far from the desired position,
It takes a long time to search for the desired reproduction position.

On the other hand, it has been proposed to change the feed rate during the search. For example, high-speed reproduction at a normal speed is performed for a predetermined time after the operation of the search button is started, and thereafter, when the button operation is continued, the search speed is automatically switched to a higher speed.

According to such a device, the problem of the above-mentioned conventional device can be solved, but since the search speed is considerably high, there arises a disadvantage that it is difficult to search for a desired reproduction position.

[0006]

DISCLOSURE OF THE INVENTION The present invention proposes a disc reproducing apparatus which can surely retrieve a desired reproduction position in a short time even if the search start position and the desired position are apart from each other.

[0007]

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a disc reproducing apparatus having two search buttons, one in the forward direction and one in the backward direction, which corresponds to a search operation while one search button is being operated. Is executed, and the search speed in the search operation is changed according to the operation of the other search button thereafter.

[0008]

The user can appropriately change the search speed by operating the other operation button.

[0009]

FIG. 2 shows a circuit block diagram of an embodiment. In the present embodiment, the present invention is applied to a compact disc player. In the figure, reference numeral 1 is a pickup for optically reading information recorded on a disc D. The pickup 1 outputs pulse train data corresponding to the read information. Such data is waveform-shaped and amplified by the amplifier 2, and then the signal processing circuit (DS
P) 2 for signal processing. Of these, the audio data is output after being converted into an analog signal by the D / A converter 3. Further, sub-data such as a synchronization signal or address data (data indicating song number, playback time, etc.) is sent to a microcomputer (computer) 5 to control a motor 6 or display section (song number, playback time, etc.). It is used for drive control of display).

Normal disk reproduction is executed by operating a reproduction button 7c provided on the front panel of the player body, for example. When the search buttons 7a and 7b are operated in the reproduction state, the microcomputer 5 detects the operation and the search operation is started. The search buttons 7a and 7b are the same as the above-mentioned playback buttons.
For example, it is arranged on the front panel.

The operation of the microcomputer 5 at the time of such a search follows the flowchart of FIG. When it is detected in step 1 that one of the search buttons has been operated, it is then detected in step 2 whether or not that button is the forward search button. YES in step 2
If so, it means that the forward search button has been operated,
If NO, it means that the backward search button has been operated. The microcomputer 5 identifies which one of the two search buttons has been operated according to the determination result of step 2. The direction of search is set according to the identification result.

The search speed follows the flow charts that follow. That is, the search speed is set to a high speed or a low speed depending on whether or not the other search button, which is not the first operated search button, is operated subsequently.
In step 3 or step 6, the state of the other search button is determined. If the other search button is operated, the search speed is set to high speed in step 4 or step 7, and if the other search button is not operated, the search speed is set to low speed in step 5 or step 8. Set.

The search speed may be set to, for example, about 5 times speed at the time of normal reproduction at low speed and about 50 times speed at high speed, but is not limited to this.

It is assumed that the search button 7b in the forward direction is operated in the normal reproduction state. In such a case, the microcomputer 5 issues a low speed forward search command in accordance with steps 1, 2, 3 and 5, and the player's reproduction mode is switched to this search mode. This search mode continues while the search button 7b is operated.
During this period, the microcomputer 5 repeats the same steps as above (steps 1, 2, 3, 5) and continues to issue the same search mode.

Thereafter, in this state, when the other search button 7a is further operated, the microcomputer 5
A high speed forward search is instructed according to steps 1, 2, 3 and 4. Therefore, the player's reproduction mode is switched to this search mode. Further, thereafter, when the operation of the search button 7a, which is the other search button, is released, the microcomputer 5 follows the steps 1, 2, 3 and 5 to set the player's reproduction mode to the previous search mode of low speed before. Return to direction search mode. Therefore, the search button 7a is turned ON / OFF while the search button 7b is turned ON.
By doing so, the forward search speed can be appropriately switched between high speed and low speed.

In the case of searching for a reproduction position that is slightly away in the forward direction, it is sufficient to operate only the search button 7b to bring the reproduction position closer to the target reproduction position at a low speed. On the other hand, in the case of searching for a reproduction position that is largely distant in the forward direction, first, the search button 7b is turned on and then the search button 7a is turned on to execute a high speed search,
If the reproduction position is brought close to the target reproduction position, and then the search button 7b is turned off to drive the reproduction position to the target reproduction position by the low speed search, the target reproduction position can be surely obtained in a short time. You can search. To complete the search, turn off both search buttons 7a and 7b.
Can be performed. In this case, the player will only repeat step 1.

When searching for a reproduction position that is distant in the backward direction, first the search button 7a is turned on to set the search direction to the backward direction. Then, the search button 7b is operated according to the degree of separation of the target reproduction position, and the search speed is changed appropriately.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments.
It goes without saying that various changes can be made. For example, the operation of the microcomputer may be other than the above flowchart. Further, the present invention can be applied not only to a compact disc player but also to a video disc player. In this case, the reproduced image is searched.

[0019]

As described above, according to the present invention, it is possible to quickly and surely search for a desired reproduction position even if the reproduction position is widely separated. Also, since a separate button for changing the search speed is not required, it can be used for a small device or a multi-function device that does not have enough room for button installation
The practical effect is further increased.

[Brief description of drawings]

FIG. 1 is a flow chart of an embodiment.

FIG. 2 is a circuit block diagram of an embodiment.

[Explanation of symbols]

 5 Microcomputer 7a Return direction search button 7b Feed direction search button

Claims (1)

(57) [Scope of utility model registration request] 1. A disc reproducing apparatus having two search buttons, one for a feed direction and the other for a return direction, performs a corresponding search operation while one of the search buttons is being operated, and the other search button after that. A disc reproducing apparatus, wherein a search speed in the search operation is changed according to an operation.