JPH06101190B2 - Operation mode control device for compact disk player - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation mode control device for a compact disc player.

2. Description of the Related Art In recent years, compact disc players (hereinafter referred to as CD players) have rapidly become popular in the audio equipment field due to digitalization along with the development of digital technology.

Hereinafter, a conventional CD player operation mode control device will be described.

The CD player has several operating modes such as playing and fast-forwarding, as well as music selection, which are controlled. Of these operation modes, the CD player is particularly effective because it is easy to select a song because a code such as song number information is recorded on the disc, and the song selection function is a major feature.

As one of the music selection functions, there is a skip mode in which the currently playing song is skipped to the beginning of the next song to play the next song, and a manual search mode in which high-speed playback is performed to find the middle of the song. It was very convenient to provide the CD player with the operation mode control device for each function as described above.

The conventional operation mode control device for each function has an operation button corresponding to each operation mode. Further, when it is attempted to control two operation modes with one operation button, in addition to this button, a changeover switch for selecting one of the operation modes is required.

Problems to be Solved by the Invention However, in recent years, with the advent of portable CD players and the like, there has been an increasing demand for miniaturization, and conventional CD player operation mode control devices require operation buttons corresponding to each operation mode. Therefore, the number of operation buttons is increased and the area of the operation panel is increased, which hinders downsizing. Also,
There has been a problem in that the size of the buttons has to be reduced instead of increasing the number of operation buttons, and the operability deteriorates.

In view of the above-mentioned problems, the present invention provides an operation mode control device for a CD player, which is capable of reducing the number of operation buttons by using the operation buttons in common and reducing the size.

Means for Solving the Problems In order to solve the above problems, an operation mode control device for a CD player according to the present invention includes an operation unit having at least a music selection operation button and a pressing time of the music selection operation button. Means for determining whether the time measured by the time measuring means exceeds an arbitrary fixed time, and whether the skip mode state or the manual search mode state is set by the output of the determining means. A mode selecting unit for selecting is provided, and the optical pickup or the like is controlled to a skip mode or a manual search mode according to the output of the mode selecting unit.

By the above means, when the pressing time of the music selection operation button is shorter than an arbitrary time, the mode selection means selects either the skip mode state or the manual search mode state to set the mode of the CD player. However, when the pressing time of the music selection operation button is longer than an arbitrary time, the mode selecting means selects the other of the skip mode state or the manual search mode state to set the mode of the CD player. Since the skip mode and the manual search mode can be selectively operated with one operation button, the number of operation buttons can be reduced, the required area of the operation panel surface can be reduced, and the CD player can be downsized.

Practical Example FIG. 1 is a functional block diagram showing the configuration of an operation mode control device for a CD player according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes one of the operation button portions, which is an operation means used to operate both a skip mode and a manual search mode, and 2 denotes a time when the operation means 1 is pressed. 3 is a determination means for determining whether or not the pressing time of the operation means 1 clocked by the timing means 2 exceeds an arbitrary fixed time (for example, 0.5 sec), and 4 is a mode selection means. In response to the output of the determining means 3, when there is an input that determines that the pressing time of the operating means 1 does not exceed an arbitrary fixed time, the output is sent to the skip mode command output means 5 and the operation mode of the CD player. Is set to the skip mode state, and when there is an input that determines that the pressing time of the operating means 1 exceeds an arbitrary fixed time, the output is sent to the manual search mode command output means 6 to operate the CD player. The mode is controlled so that the mode is selected so as to be in the manual search mode state.

FIG. 2 shows an external perspective view of a CD player according to an embodiment of the present invention.

In FIG. 2, 11 is the body of the CD player, and 12 is a lid attached to the body 11 so as to be openable and closable.

Reference numeral 13 is a power switch, 14 is a button for both playing and pause, 15 is a stop button, 16 is an operation button for both skip and manual search, and 17 is a display section for displaying a performance song number, performance time and the like.

FIG. 3 is a block diagram showing the structure of a CD player according to an embodiment of the present invention.

Reference numeral 21 is a disk, 22 is a drive motor for driving a turntable on which the disk 21 is mounted, and rotation control is performed by a turntable drive control circuit 23.

Reference numeral 24 is a traverse having a pickup 31 for optically extracting the data recorded on the disk 21, and is linearly moved by the control of the traverse control circuit 25 in the radial direction of the disk 21.

Reference numeral 26 is a tracking control circuit for the optical pickup 31, and 27 is a focus control circuit.

An operation unit 28 is for inputting to the microcomputer 30 a pressing command of an operation button such as an operation button 29 which is used for both skip and manual search.

The microcomputer 30 controls the turntable drive control circuit 23, the traverse control circuit 25, the tracking control circuit 26, the focus control circuit 27, according to each operation mode input from the operation unit 28.
Command is sent to each control circuit based on this command, and the audio digital signal extracted from the pickup 31 is converted to the digital-analog converter 32.
The signal is converted into an analog signal by the (D / A converter), amplified by the amplifier 33, and reproduced by the speaker 34.

Also, data such as music number information and time information recorded on the disk 21 is taken out by the pickup 24 and the microcomputer.
Entered in 30.

FIG. 4 shows an essential part of a flow chart showing the operation of the microcomputer of the operation mode control device for the CD player according to the embodiment of the present invention.

The operation of this embodiment will be described below with reference to FIGS. 3 and 4.

First, the case where the skip mode state of the CD player is obtained will be described.

Now, while playing a certain song or in a pause state at a certain song, if the operation button 29 is momentarily pressed (about 0.5 sec or less), the microcomputer 30 determines that the operation button 29 shown in step 1 is pressed. , Go to step 2
Time the pressing time of 29. Then, in step 3, it is determined that the pressing time is shorter than an arbitrary fixed time (about 0.5 sec), and the process proceeds to step 5 in which the microcomputer 30 causes the traverse control circuit 25 to put the CD player in the skip mode.
Command is output to each control circuit such as. This gives the CD player a skip mode.

Next, to obtain the state in the manual search mode, the operation button 29 is pressed for an arbitrary fixed time (about 0.5 sec) or more. As a result, the microcomputer 30 determines that the operation button 29 has been pressed in step 1 as shown in the flowchart of FIG. 4, and proceeds to step 2 to measure the pressing time of the operation button 29. Then, in step 3, it is determined that the pressing time exceeds an arbitrary fixed time, and the process proceeds to step 4 to output a command from the microcomputer 30 to each control circuit such as the traverse control circuit 25 so as to put the CD player in the manual search mode state. To do.

This gives the CD player a manual search mode.

As described above, according to this embodiment, by changing the pressing time of one operation button 29, the pressing time is measured by the time measuring means 2, and the judging means 3 judges whether or not it exceeds an arbitrary fixed time, The output allows the mode selection means 4 to select either the skip mode operation or the manual search mode to bring the operation of the CD player into one of the operation mode states. Can be operated in manual mode, and the number of operation buttons can be reduced by also using the operation buttons, and the area of the operation panel can be reduced, which can be one means for downsizing the CD player. it can. Further, the cost can be reduced by reducing the number of operation buttons.

EFFECTS OF THE INVENTION The present invention provides an operation button and a time measuring means for measuring the pressing time of the operation button, a judging means for judging whether the pressing time of the operation button exceeds an arbitrary fixed time, and a CD player by the output of the judging means. CD equipped with selection means for selecting either the skip mode or the manual search mode as the operating mode
This is an operation mode control device for the player. With this, it is possible to selectively operate the skip mode and the manual search mode with a single operation button. Therefore, the number of operation buttons can be reduced and the area of the operation panel can be reduced, so that The size can be reduced, and the cost can be reduced by reducing the number of parts.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing the configuration of an operation mode control device for a CD player in one embodiment of the present invention, FIG. 2 is an external perspective view of a CD player in one embodiment of the present invention, and FIG.
FIG. 4 is a block diagram showing a configuration of a CD player according to an embodiment of the present invention, and FIG. 4 is a flowchart showing an essential part of an operation of a microcomputer of an operation mode control device for a CD player according to an embodiment of the present invention. is there. 1 ... Operating means, 2 ... Time measuring means, 3 ... Operation time determining means, 4 ... Mode selecting means, 5 ... Skip mode command output means, 6 ... Manual search mode command output means.

Claims (1)

[Claims] 1. An operating section having at least a music selection operation button, a time measuring means for measuring a pressing time of the music selection operation button, and whether or not the time measured by the time measuring means exceeds an arbitrary fixed time. And a skip mode for reproducing from the beginning of the next music of the music being reproduced by the output of the judgment means or a manual search mode for high-speed reproduction for searching the middle of the music. An operation mode control of the compact disc player, characterized in that the operation mode of the compact disc player is controlled to a skip mode or a manual search mode in accordance with an output of the mode selection means. apparatus.