JPH0766481B2 - Record player - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a record player for instructing the record player the start point of the record board by a size switching operation means of the record board and performing restart or repeat performance.

2. Description of the Related Art In recent years, the functions of record players have become more automated, and many of them are capable of restarting and repeat playing. The restart operation is such that, if a restart operation is performed during performance or while the tone arm is rotating, the tone arm will return to the rest position and then start again. By performing a repeat performance operation, the performance from the beginning to the end of the record board is repeated. The record size switching operation for instructing the record player of the start point of the record board can be switched at any time regardless of the operating state of the record player as long as the power is on.

Problems to be Solved by the Invention However, in the above configuration, when the record size switching operation is performed in the restart or repeat performance state, the record size is changed to 17 cm.
If you switch to a 30 cm disc during playing, there is a risk that the needle will fall outside the record and damage the needle.

In view of the above problems, the present invention provides a record player capable of avoiding damage to the needle due to an erroneous operation.

Means for Solving the Problems In order to solve the above problems, a record player according to the present invention comprises a tone arm, a start / stop command means including a microcomputer for generating a signal for controlling a record performance, and a start / stop command. A turntable drive means for controlling the drive of the turntable according to the output signal from the command means, a record size switching operation means for designating the descending position of the stylus of the tone arm, and a start command for the start / stop command means. A start operation means for giving a repeat performance and a repeat operation means for performing a repeated performance, and the start / stop command means is in a playing state by a start command from the start operation means or a repeat command from the repeat operation means. , In the record size switching operation means If the current record size setting value is compared with the record size setting value at the previous performance and it is determined that the size is different, the tone arm returns to the rest position when the performance ends, and then a standby signal is generated to drive the turntable. It has a configuration for controlling the means and the tone arm in a standby state.

The present invention has the above-described configuration, and when the record size switching operation is performed when the tone arm is not in the rest position, for example, when the tone arm is in the restart or repeat playing state, the tone arm does not start after the return operation, and the operation is caused by an error operation. It is possible to avoid damage to the needle.

Example Hereinafter, regarding a record player of one example of the present invention,
A description will be given with reference to the drawings.

FIG. 1 is a functional block diagram of a record player according to an embodiment of the present invention. In FIG. 1, 11 is a record size switching operation means, 12 is a start operation means,
13 is a repeat operation means, 14 is a start / stop command means for outputting a start / stop command by input from the record size switching operation means 11, the start operation means 12 and the repeat operation means 13, and 15 is an output of the start / stop command means 14. It is a turntable driving means for driving the turntable.

FIG. 2 shows a block diagram of a record player in one embodiment of the present invention. 21 is a turntable driving means, 22 is a microcomputer, 23 is an operation input means, 24 is a record size switching button, 25 is a start button, 26 is a repeat button, and the record size switching button 24, start button 25 and repeat button 26 The operation input means 23 outputs a signal by the operation of, and the microcomputer 22 inputs the signal and outputs a command to the turntable drive means 21.

FIG. 3 is a main part of a flow chart showing the operation of the microcomputer of the record player according to the embodiment of the present invention.

If the start button 25 is operated during the performance, it will be in the restart state. Further, when the repeat button 26 is operated, the repeat state is set. When the tone arm is not in the rest position, for example, in the restart or repeat state, after the performance is finished and the arm is returned to the rest position, whether the microcomputer 22 restarts as shown in step 1 or not. If it is restarted, the process proceeds to step 3, and if it is not restarted, the process proceeds to step 2. In step 2, it is determined whether or not repeat performance is performed. If it is repeat, the process proceeds to step 3, and if it is not repeat, it does not start and enters a standby state. In step 3, record size switching button 24
Is the same as the record size you played last time,
If it is the same, it will start, and if it is different, it will be in the standby state.

As described above, when the record size switching operation is performed in the restart or repeat playing state, the tone arm does not start after the return operation, and it is possible to avoid damage to the needle due to an erroneous operation.

As described above, according to the present invention, the tone arm, the start / stop command means for starting / stopping the record performance, the turntable driving means for driving the turntable by the start output of the start / stop command means, and the tone are described. A record size switching operation means for designating the descending position of the arm, a start operation means for giving a start command to the start / stop command means, and a repeat operation means, and the start / stop command means are provided.
When in a playing state by the start command or the repeat command from the repeat operation means, the set value of the current record size in the record size switching operation means is compared with the record size set value at the previous performance, and a different size is set. When the tone arm is returned to the rest position when the performance ends, a standby signal is generated to control the turntable driving means and the tone arm to be in the standby state. Since the record size switching operation is not accepted when not in the rest position, the tone arm will not operate even if the record size switching operation is mistakenly performed during repeat play or restart, and damage to the record needle can be avoided. , Its effect is extremely large.

[Brief description of drawings]

FIG. 1 is a functional block diagram of a record player in one embodiment of the present invention, FIG. 2 is a block diagram of a record player in one embodiment of the present invention, and FIG. 3 is a micro of a record player in one embodiment of the present invention. It is a flowchart which shows the principal part of operation | movement of a computer. 11 …… Record size switching operation means, 12 …… Start operation means, 13 …… Repeat operation means, 14 …… Start / stop command means, 15 …… Turntable drive means, 21 ……
Turntable drive means, 22 ... Microcomputer, 23 ... operation input means, 24 ... record size switching button, 25 ... start button, 26 ... repeat button.

Claims (1)

[Claims] 1. A start / stop command means including a tone arm, a microcomputer for generating a signal for controlling a record performance, and a drive control of a turntable according to an output signal from the start / stop command means. Turntable drive means, record size switching operation means for designating the stylus descending position of the tone arm, start operation means for giving a start command to the start / stop command means, and repetitive performance. A repeat operation means, wherein the start / stop command means is the current record size in the record size switching operation means when in a playing state by a start command from the start operation means or a repeat command from the repeat operation means. Setting value and the previous performance Compared with the record size set value,
When it is determined that the sizes are different, the record player is characterized in that after the tone arm returns to the rest position due to the end of the performance, a standby signal is generated to control the turntable driving means and the tone arm to a standby state. .