JPS6122364B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a player device that can start playing a record from an arbitrarily designated position on the surface of the record.

An example of this type of device is an address that is appropriately assigned on the record surface, for example, the record surface is divided concentrically into hundreds of addresses, and the user inputs an arbitrary address in advance by key input means. It has been proposed that upon designation, the arm moves to the designated address and automatically starts playing the record from there.

In addition to the usual arm system and turntable system, this device is equipped with a control circuit that includes an arm drive device, an arm position detector, a display section, and a microcomputer that controls these entire systems in order to automatically play records. It consists of A specific example of this is JP-A-53-132303.

This type of player device has the basic configuration shown in FIG. 1 and performs the operations shown in FIG. 2.

The performance start address A is stored in the memory 4 by the operation of reading, through the control circuit 3, the destination address key input at which the operator desires to start the performance by operating the key input section 1. Next, a tone arm rotation command is given to the arm control unit 5 from the control circuit 3, and the tone arm rotation motor is turned on, and the tone arm rotates.At the same time, the tone arm rotation angle detector 2 responds to the tone arm rotation angle detector 2, and the tone arm rotation angle B is output from the control circuit 3. A read is performed. Note that this tone arm rotation angle can be considered to correspond to the address on the record surface, and can be obtained as the address.

Then, the control circuit 3 obtains the difference between the performance start address A and the tone arm rotation angle B, and furthermore, the difference is 0 (zero).
If "NO" is determined, the above-mentioned tone arm rotation angle B reading is executed. Eventually, when it becomes "YES", a signal SP to turn off the tone arm rotation motor is obtained from the control circuit 3 and given to the arm control circuit 5, and the rotation of the tone arm is stopped.
Further, the cartridge of the tone arm is lowered onto the record, and automatic performance begins. Here, when the tone arm position is displayed by address on the display section 6, the following problem occurs.

After detecting a match between the performance start address A and the tone arm rotation angle B, if the tone arm rotation motor is turned off and the tone arm position is displayed, the displayed tone arm position will be the same as the performance start address A. It doesn't necessarily match. This is because due to the inertia of the tone arm system, etc., and the up and down movement of the tone arm until the performance, the position of the tone arm is 1 to 2 addresses too far from the performance start address A.
The value will be displayed at a shifted address.

In this repeating loop of displaying the tonearm position as an address → performance → displaying the tonearm position as an address, the address that is different from the target address will be displayed when the tonearm position is displayed for the first time, making it difficult to operate. Users have had the problem of feeling uneasy about whether they have made an input error because the address displayed is different from the address they entered.

As a countermeasure for this, it is possible to make the address pitch coarser, but if the address pitch is made coarser, there will be many sound grooves within the width of one address. If it were to exist within the width of address 1, there was a problem in that it would not be possible to start playing from the beginning.

SUMMARY OF THE INVENTION Therefore, the present invention aims to provide a player device which is useful for improving such problems, and which displays a specified address until a set time elapses after the arm reaches the specified address (destination address). The feature is that the address, which is the current position of the arm, can be displayed after the set time has elapsed.

In the present invention, for example, after the specified performance start address and the current address of the tonearm, which is the current tonearm rotation angle, match and the automatic performance start state is entered, the performance start address (destination address) is maintained for a predetermined period of time. This is characterized in that the display state is changed to the display state of the current address of the tone arm after a predetermined period of time has elapsed.

Hereinafter, the play start address, which is the address specified for the player device of the present invention, and the current address of the tone arm, which is the current tone arm rotation angle, match, and when the tone arm rotation motor is turned off, the play start address is displayed. An example in which such considerations are taken will be described.

Therefore, one embodiment of the present invention can be realized by including a functional section as shown in FIG. 3 in the control circuit 3.

Reference numeral 10 indicates a display switching unit that switches a signal representing the destination address, that is, a performance start address, and a signal representing the current address of the tone arm and transmits the signal to the display unit 6. Reference numeral 11 performs a timekeeping operation in relation to the tone arm rotation motor off signal Sp. This is the timer section, and this is the signal Sp
In response to this, the timing operation starts and the set time e.g. 2~
Until 3 seconds have elapsed, the display switching unit 10 is supplied with a signal useful for controlling the signal Ss representing the performance start address to the display unit 6, and after the set time has elapsed, the signal St representing the current address of the tone arm is supplied. It is switched to supply a signal useful for control leading to the display section 6.

Here, the signal Ss representing the performance start address is obtained by reading the performance start address stored in the memory 4, and the signal St representing the current address of the tone arm is obtained in response to the tone arm rotation angle detector 2. Of course, it can be obtained by reading out in response to the tone arm rotation angle obtained by the control circuit 3.

Therefore, when the tone arm rotation motor off signal Sp is obtained in the same manner as described above, the timer section 11 starts the timing operation and the display switching section 1
0 is supplied with a control signal so that the signal Ss is guided to the display section 6, so the display section 6
The destination address, which is the performance start address, is displayed.

It goes without saying that the tone arm is further lowered and the record begins to play.

When the set time has elapsed, the timer section 11
is switched so that a signal for controlling the signal St to be guided to the display section 6 is supplied to the display switching section 10, and the current address of the tone arm is displayed on the display section 6.

Note that even after this, the tone arm continues to be in the lowered state and the record is played.

At the end of the desired record performance, a reset signal, such as a signal related to raising the tone arm, is sent.
When Su is obtained, the timer section 11 is reset in response.

Further, the control circuit 3 may be configured to execute a flowchart as shown in FIG. 4 after the tone arm rotation motor OFF signal Sp is obtained.

That is, when the signal Sp is obtained in the same manner as described above, in response to this signal Sp, the control circuit 3 guides the signal Ss of the performance start address, which is the destination address, to the display section 6, displays the performance start address, and starts playing the record. While controlling the state, it is determined whether the set time of 2 to 3 seconds has elapsed, and if it is "NO", the above is repeated, and eventually, if it is "YES", the signal St at the current address of the tone arm is detected. is guided to the display section, the tone arm position is displayed by address, and the tone arm is controlled to be in a record playing state. It should be noted that once the intended record performance is finished, the above operation is also finished.

As mentioned above, when the display changes from the play start address to the current address of the tone arm, it is generally discontinuous and gives an unnatural feeling, but when playing a record, the slight deviation of the center hole of the record is the maximum. With 0.5mm, etc., the needle tip does not necessarily move uniformly toward the center, but tends to move towards the center or in the opposite direction, and as a result, the current address of the tone arm also repeats up and down. Therefore, the above unnaturalness is not a practical problem.

According to the above embodiment, the condition for displaying the performance start address is the tone arm rotation motor off signal, but it is not limited to this, and may be related to the tone arm lowering, as long as the condition is necessary to start the performance. I understand that you can use either one. Furthermore, in the case of player devices, not only the rotary arm as described above but also a so-called linear tracking arm is known, and it goes without saying that the present invention can be applied to this as well.

As described above, in the player device of the present invention, the positional information such as the address specified by the operator is first displayed at the start of the performance, and then the positional information of the arm is displayed. This is useful in preventing a discrepancy between the target information and the positional information displayed at the start of a performance, and is useful in eliminating the operator's anxiety during operation.

[Brief explanation of the drawing]

Figure 1 shows the basic configuration diagram of the brake device, and Figure 2 shows the basic configuration diagram of the brake device.
This figure shows a flowchart explaining the same operation as above, FIG. 3 shows a block diagram showing the main parts of the player device of the present invention, and FIG. 4 shows a flowchart explaining an example of the operation. 1: Key input section, 2: Tone arm rotation angle detector, 3: Control circuit, 4: Memory, 6: Display section, 1
0: Display switching section, 11: Timer section.

Claims (1)

[Scope of Claims] 1. A player device in which an arm is automatically introduced to an arbitrarily specified address among addresses appropriately assigned on a record surface, wherein when the arm reaches the specified address. 1. A player device comprising: a display means that displays a specified address within a set time immediately after a set time, and then switches to a display state of a current address of the arm.