JPS61271661A - Compact disc player - Google Patents

Abstract

PURPOSE:To bring the state into the reproducing state instantly by allowing a switch state discriminating means to read respectively when a power switch is closed and a cover open/close switch is closed or opened, to write the information to a memory means or to erase the content of the memory means thereby closing a reproducing switch. CONSTITUTION:When the power switch 1 is closed and the cover open/close switch 2 is opened, the switch state discrimination means 5 operates a memory erasure means 10 and a display erasure means 11 to erase a memory means 8 and the display of a display means 9 at the same time. When the cover open/ close switch 2 is closed, the TOC information read means 6 is operated to write the read information to the memory means 8 via the memory write means 7 and to display the information to the memory means 8. Thus, the state is brought immediately the reproduction state.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a compact disc player for playing a compact disc on which TOC information is recorded.

Conventional technology In general, information on compact discs is recorded as digital signals, and a TOC (Table
Of Contents) information is recorded.

This TOC information consists of information such as how many songs are recorded on the compact disc, how many minutes and seconds is the total playback time, and how many minutes and seconds is the playback time of the first track. This makes it easy to detect between songs and play programs on a compact disc player.

Therefore, when randomly accessing and playing songs on a compact disc player, it is necessary to read the TOC information of the compact disc and store it in the memory in advance.

Problems to be Solved by the Invention However, since conventional compact disc players read TOC information by closing the playback switch, even if the user closes the playback switch, the player does not immediately enter the playback state. Instead, they had to wait for the time required to read the TOC information.

The present invention has been made to solve these problems, and an object of the present invention is to provide a compact disc player that can be put into a playback mode immediately when the playback switch is closed.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a player body equipped with a turntable on which a compact disc is mounted and driven by a drive motor, and a player body provided in the player body so as to be openable and closable. a power switch, a lid opening/closing switch for detecting opening/closing of the lid, a switch state determining means for performing control based on the opening/closing states of the power switch and the lid opening/closing switch, and a T.
TOC information reading means for reading oe information and read TOC information
The switch state determining means includes a memory writing means for writing C information into the memory means and a memory erasing means for erasing the contents stored in the memory means. The information reading means and the memory writing means are operated to read and write TOC information into the memory means, and when the power switch is closed and the lid opening/closing switch is open, the memory erasing means is operated to erase the contents stored in the memory means. It is controlled as follows.

Effect The effect of the above means is as follows. That is, when the power switch is closed and the lid opening/closing switch detects the closed state of the lid and is closed, the TOC information is read and written to the memory means regardless of the state of the regeneration switch, so that the regeneration state can be immediately entered. In addition, when the lid is opened to replace a compact disc, the lid open/close switch is opened and the contents stored in the memory means are erased, and when a new compact disc is loaded and the lid is closed, a new Since the TOC information is read and written into the υ memory means, the reproduction state can be entered immediately.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, 1 is a power switch that supplies power to the entire compact disc player (hereinafter simply referred to as the player), and 2 is a lid that detects the open/closed state of a lid 4 provided on the player body 3 so as to be freely openable and closable. Open/close switch, 6
is a switch state determination means that performs switching as shown in Table 1 depending on the open/close states of the power switch 1 and the lid open/close switch 2. When the power switch 1 is closed and the lid open/close switch 2 is closed, control a is performed and the TOC information is is read and written to the memory means. Further, when the power switch 1 is closed and the lid opening/closing switch 2 is open, the control is performed and the memory means is erased. No control is performed when the power switch 1 is open. 6 is TO
7 is a memory writing means for writing the read TOC information into the memory means 8; 9 is a display means for displaying the read TOC information; 1o is for erasing the contents stored in the memory means 8. memory erasing means, 11
is a display erasing means for erasing the display on the display means.

Table 1, Figure 3 is a circuit block diagram of the player of this embodiment.
This will be explained.

12 is a pickup that reads bit string information recorded on a compact disc; 13 is a signal detection unit that detects the information read by the pickup; 14 is a signal detection unit or a lid opening/closing switch 2, a playback switch 15, a stop switch 16, etc. A control section that controls each part depending on the open/close state of the
In addition to performing the control indicated by broken lines in FIG. 1, the first switch 17 and the second switch 18 are opened and closed to connect and disconnect the motor circuit 19 and the audio circuit 20 from the power source.

FIG. 4 is a functional block diagram of the player of this embodiment,
This will be explained.

21 is a turntable drive motor that drives the turntable 23 on which the compact disc 22 is placed; 24 is a traverse motor that controls the movement of the pickup 12 in the radial direction of the compact disc 22; and 26 is a motor that controls the turntable drive motor 21. A turntable drive control circuit, 26 a traverse motor that controls the traverse motor 24, 27 and 28 a tracking control circuit and a focus control circuit that control movement of the pickup 12 in the tracking direction and focus direction, 29 a lid opening/closing switch: f-2 30 is a digital-to-analog converter that converts the digital audio signal from the pickup 12 into an analog signal, and 31 is a digital - an amplifier for amplifying the audio signal converted by the analog converter;
For example, it is headphones connected to a .32 frequency player.

The player configured as above will be explained with reference to FIGS. 6 and 6.

First, in step 1, wait until the power switch 1 is closed, and when it is closed, proceed to step 2. In step 2, if the lid opening/closing switch 2 is open, the process moves to step 2-1 and the memory erasing means 10 is operated to erase the memory means 8 and at the same time erase the display on the display means 9. If the lid opening/closing switch 2 is closed, or if the lid opening/closing switch 2 is closed after step 2-1 is completed, the process moves to step 3, where the TOC information reading means 6 is operated, and then the content read in step 4 is displayed on the displaying means 9. At the same time, the memory writing means 7 is operated to write the information into the memory means 8. Once step 4 is completed,
Even if the regeneration switch 16 is closed, the standby state is immediately entered into the regeneration state.

When the lid 4 is opened to replace the compact disc in the standby state, the lid open/close switch 2 is opened, so in step 7 of Fig. 6, the process jumps to Fig. 5 Q and in step 2-1, the TOC information of the old compact disc is memorized. Then, the memory means 8 and the display means 9 which were displayed are erased, the old compact disc is removed, the new compact disc is loaded, and the lid 4 is closed after that, the lid opening/closing switch 2 is closed, so step 3 and In step 4, the TOC information of the new compact disc is read and written into the memory means 8 and displayed on the display means 9.

When the regeneration switch 16 is closed in the standby state, the regeneration state is immediately entered in step 8.

When you open the lid 4 to exchange the compact disc in the playback state, the lid open/close switch 2 opens, so in step 9 jump to O in Figure 6 and follow the same route as when replacing the compact disc in the standby state described above. After all, it reads the TOC information of the new compact disc, enters standby mode, and waits for the next command.

Next, a second embodiment of the present invention will be described with reference to FIG. However, the configurations shown and described in FIGS. 1 to 4 and FIG. 6 are completely the same.

First, in step 1, wait until the power switch 1 is closed, and when it is closed, proceed to step 2. In step 2, if the lid opening/closing switch 2 is open, the process moves to step 2-1 and the memory erasing means 1o is operated to erase the memory means 8 and at the same time erase the display on the display means 9. Next step 2-2
Then, the first switch 17 and the second switch 1 are opened, and in order to reduce power consumption, the motor circuit 19 and audio circuit 2o are turned off and the lid open/close switch 2 is closed. If the lid opening/closing switch 2 is closed, or if the lid opening/closing switch 2 is closed after step 2-2 is completed, the process moves to step 3, where the first switch 17 is closed and only the motor circuit 19 is turned on, and in step 4, the traverse control circuit is turned on. 26 drives the traverse motor 24 to move the pickup 12 to the TOC information reading position on the innermost circumference of the compact disc 22, and the turntable drive control circuit 2
5, the turntable drive motor 21 is rotated and the TOC information of the compact disc 22 is read. Step 6
Then, the read TOC information is displayed and written into the memory means 8. In step 6, the motor circuit 19 is turned off to reduce power consumption and enter a standby state.

In this way, according to this embodiment, the compact disc 22
When the lid opening/closing switch 2 is closed, the TOC information is read, and when the lid opening/closing switch 2 is opened, the memory means 8 is erased. Therefore, when the lid 4 is closed, the memory means 8 stores the TOC information of the latest compact disc currently loaded. Since the TOC information is displayed on the display means 9, the user can see the TOC information before starting the playback operation, and if he performs the playback operation based on this, he can immediately enter the playback state. Further, power consumption can be reduced by turning off the audio circuit 20 and the motor circuit 19 when the lid opening/closing switch 2 is open, and by turning off these circuits even in the standby state.

Although not shown in the above embodiment, actually in FIGS. 6 and 7, when the lid 4 is closed in step 2 and the lid opening/closing switch 2 is closed, the compactor is closed before proceeding to the next step. The presence or absence of a disc is detected, and if there is a compact disc, the process moves to the next step, but if not, the process moves to (3) and waits for the compact disc to be loaded and the lid 4 to be closed.

As described in detail, according to the present invention, TOC information is read and stored when the lid opening/closing switch that detects the closed state of the lid is closed, so that the playback state can be immediately entered. Furthermore, since the TOC information read at the same time is displayed, the user can visually see it by closing the lid before starting the playback operation, and can perform the playback operation based on this.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the main parts of a compact disc player according to an embodiment of the present invention, Fig. 2 is a perspective view of the same external appearance, Fig. 3 is a circuit block diagram of the same, Fig. 4 is a functional block diagram of the same, Fig. 6 6 is a flowchart of the same embodiment, and FIG. 7 is a flowchart of the same embodiment. DESCRIPTION OF SYMBOLS 1... Power switch, 2... Lid opening/closing switch, 6... Switch status determination means, 6...
...TOC information reading means, 7...Memory writing means, 8...Memory means, 9...Display means, 10...Memory erasure Means, 11...
...Display erasing means. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 5 Figure 6

Claims (2)

[Claims] (1) A player body equipped with a turntable on which a compact disc is mounted and driven by a drive motor, a lid provided on the player body so that it can be opened and closed, a power switch, and a lid that detects whether the lid is opened or closed. an opening/closing switch, a switch state determining means for performing control based on the opening/closing states of the power switch and the lid opening/closing switch, a TOC information reading means for reading TOC information recorded on a compact disc, and writing the read TOC information into a memory means. The switch state determining means includes a memory writing means and a memory erasing means for erasing the contents stored in the memory means, and the switch state determining means includes a TOC information reading means and a memory writing means when the power switch is closed and the lid opening/closing switch is closed. The compact disc player is configured to operate the TOC information to read and write TOC information in the memory means, and to operate the memory erasing means to erase the contents stored in the memory means when the power switch is closed and the lid opening/closing switch is open. . (2) A player body equipped with a turntable on which a compact disc is mounted and driven by a drive motor, a lid provided on the player body so that it can be opened and closed, a power switch, and a lid that detects whether the lid is opened or closed. an opening/closing switch, a switch state determining means for performing control based on the opening/closing states of the power switch and the lid opening/closing switch, a TOC information reading means for reading TOC information recorded on a compact disc, and writing the read TOC information into a memory means. The switch state determining means includes a memory writing means and a memory erasing means for erasing the contents stored in the memory means, and the switch state determining means includes a TOC information reading means and a memory writing means when the power switch is closed and the lid opening/closing switch is closed. The TOC information is read and written in the memory means, and the display means is operated.When the power switch is closed and the lid opening/closing switch is open, the memory erasing means is operated to erase the contents stored in the memory means. A compact disc player that is controlled to operate a display erasing means.