JPH076483A - Mode setting device for optical disk driving device - Google Patents

Abstract

PURPOSE:To reduce a space and the number of parts for a selection means for setting special modes and to suppress the increase of the number of selection means even when the number of special modes is increased. CONSTITUTION:Signals for setting special modes are inputted in an optical disk driving device by using a connector 8 for connecting an ejection switch 7 provided for the loading/unloading of an optical disk. Inputted signals are analyzed by a modulated signal analyzing part 11 and special modes which are determined previously in accordance with the sorts (frequencies, etc.,) of the signals are set in this device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mode setting for selectively setting a normal operation mode for an optical disk drive device to perform a normal operation, or a special mode such as a test mode or a self-check mode of the optical disk drive device. Regarding the device.

[0002]

2. Description of the Related Art In addition to a normal operation mode for operating an optical disk drive device normally, a special mode such as a test mode for efficiently proceeding with the production and assembly of the optical disk drive device and a self-check mode for performing a self-check. In devices with modes, in general,
A dip switch, a short plug, etc. are used to distinguish between the normal operation mode and the special mode and to select one of the special modes. For example, in the normal operation mode, the dip switch is off, and the dip switch is turned on to operate as a special mode. When a plurality of special modes are provided, a plurality of switches are used to select a predetermined mode from the plurality of special modes.

FIG. 6 is a diagram showing a conventional configuration example. In this example, a selection switch 51 including eight switches SW1 to SW8 is provided. The switches SW1 to SW8 are pulled up to Vcc (high level) by pullup resistors R1 to R8, respectively. The control unit 54 for controlling the system of the optical disk drive device is the input port 53.
The state of the selection switch 51 (switches SW1 to S
The state of W8) can be known.

Now, consider a case where any of the switches SW1 to SW8 is turned off. At this time, since the signal Sin indicating the state of the switch is pulled up to Vcc by the pull-up resistor Rn, the potential is Vcc.
Next shows a high level. On the other hand, when the switch SWn is on, the signal Sin indicates a low level because it is connected to the ground by the switch SWn. The control unit 54 inputs the states of the signals Si1 to Si8 via the input port 53 and obtains information as to whether the switches SW1 to SW8 are on or off, respectively, depending on the level, and determines whether the mode is the normal mode or the special mode or the special mode. If it is a mode, it recognizes which special mode should be selected.

[0005]

In the case of the above-mentioned conventional mode selecting device, a selecting means including a plurality of switches is provided in order to select a predetermined operation mode from a plurality of special modes. However, there is a problem that a space for mounting a plurality of selection means is required, the cost is increased, and the number of parts is increased. Further, when it was necessary to increase the number of special modes, it was necessary to deal with the problem by increasing the number of selecting means.

In view of the above problems, the present invention needs to reduce the space for the selection means for setting the special mode and the number of parts, and increase the number of selection means even when the number of special modes is increased. It is an object of the present invention to provide a mode setting device for a non-existent optical disk drive device.

[0007]

The invention described in claim 1 is
In a mode setting device for setting a normal operation mode for the optical disk drive device to perform a normal operation or a special mode different from the normal operation mode such as a test mode, a connector to which an eject switch of the optical disk drive device is connected , Means for setting a special mode when a predetermined special mode signal is input, and setting a normal operation mode when the special mode signal is not input, unlike the input signal from the eject switch from the connector, , Is provided.

According to a second aspect of the present invention, in the mode setting device of the optical disc drive apparatus according to the first aspect, the type of the special mode signal input from the connector is discriminated, and the special mode different depending on the type of the special mode signal. Is provided.

The invention shown in claim 3 is the invention according to claim 1 or 2.
In the mode setting device of the optical disc drive device according to any one of the above, the signal input from the connector is
It is characterized in that means for setting the normal operation mode is provided when the input signal from the eject switch and the special mode signal do not match.

[0010]

In the invention described in claim 1, the eject switch normally provided in the optical disk drive device is used for loading / unloading (loading / unloading) the optical disk, and a predetermined signal is generated by turning on the eject switch. Is input through the connector and becomes an eject command. In this case, since the special mode signal is not input to the connector, the normal mode is set. On the other hand, when a predetermined special mode signal is input from the connector, the special mode is set by the input.

According to the second aspect of the present invention, depending on the type of the input special mode signal, a different mode from the special modes (one of the test mode at the time of assembly and the self-check mode, etc.) ) Is set and even when one is selected from many modes, it is only necessary to change the signal input from the connector. In addition, when adding a mode, it is only necessary to determine the type of signal for the additional mode, determine the signal, and set the additional mode when the signal is determined. There is no need to do it, and it is easy to increase modes.

According to the third aspect of the present invention, when any signal is input from the connector, the normal operation mode is set. Therefore, a special mode is set except when necessary, and a malfunction occurs. Is prevented.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the construction of an optical disk drive device according to an embodiment of the present invention.

Reference numeral 1 denotes an optical disk which is a recording medium for information, and 2
Is an optical unit and mechanism system such as a pickup for recording / reproducing on / from the recording medium 1, 3 is a recording / reproducing unit for modulating / demodulating data, and 4 is a servo for positioning the pickup 2 at a predetermined position on the recording medium 1. A control unit, 5 is a control unit for controlling the optical disk drive, 6 is a loading mechanism for loading / unloading the recording medium 1 to / from the device, and 7 is an eject switch used for requesting the ejection of the recording medium 1 from the device. , 8 are connectors for connecting the controller 5 and the eject switch 6. The eject switch 7 is provided on the front panel section of the optical disk drive device, and is connected to the board on which the control section 5 is mounted by a connector 8.

Generally, the user of the optical disk drive device requests the ejection of the recording medium 1 from the optical disk drive device by pressing the eject switch 7. The fact that the eject switch 7 has been pressed is transmitted to the control unit 5 via the connector 8, and the control unit 5 causes the loading mechanism 6 to operate.
The recording medium 1 is ejected by driving. The eject switch 7 is a switch operated by a human (or a machine), and the special mode modulation signal input section 15 is connected to the connector 8 as an interface.
The special mode modulation signal input unit 15 is a device that can output several types of required modulation signals, and the output terminal is the connector 8
The connector on the side of the eject switch 7 is removed and the connector of the special mode modulation signal input section 15 is connected when a product test or check is performed. As a result, the required modulation signal is input to the control unit 5 via the connector 8.

A modulation signal analysis unit 11 is provided between the connector 8 and the control unit 5. On the other hand, the control unit 5 is connected to a first test unit 12, a second test unit 13, ... An Nth test unit 14. Each test section is an operation section for performing a test or check operation at the time of inspection or repair in the factory. The signal input from the connector 8 is analyzed by the modulation signal analysis unit 11, and the information is input to the control unit 5. The control unit 5 selects the test unit to be executed from the plurality (N) of the test units 12 to 14 according to the input analysis information.

FIG. 2 is a diagram showing an example of signals input to the connector 8.

In this example, the input modulation signal is frequency-modulated, but it goes without saying that the present invention can be applied to other modulation methods. Signals S1, S2, S3 in this example
Are square waves having different frequencies f1, f2, and f3, and are signals for instructing the execution of the first test section, the second test section, and the third test section, respectively. Further, when the eject switch 7 is pressed, as shown in the figure, a signal which becomes “H” is input only while the eject switch 7 is pressed. The modulated signal analysis unit 11 uses the signal S
1, S2, ..., And the frequency of the signal when the eject switch 7 is pressed is determined (counted).

FIG. 3 is a diagram showing a configuration example of the modulation signal analysis unit 11.

The modulated signal analysis unit 11 includes a counter 21 and a timer 22. The timer 22 operates for a certain period of time after some signal is input from the connector 8 and outputs an enable signal to the counter 21 during operation.
The counter 21 operates according to the enable signal from the timer 22, counts the frequency of the input signal, and outputs the counted frequency to the control unit 5.

The control unit 5 has frequency signals S1, S2 ...
, And various special modes are stored, and either the loading mechanism 6 or the test units 12, 13, ... Are operated based on the frequency of the input signal. When the number of test units is increased, it is possible to operate the test units by adding a frequency for operating the test units to this table.

4 and 5 are flow charts showing the processing procedure of the control unit 5 in the present invention.

In a normal standby state, the system waits for the recording medium 1 to be inserted while performing processing necessary for drive control such as error monitoring (n1 → n2). When the recording medium 1 is inserted, the loading process is performed, and after the loading process, the connector 8 is performed while performing a process necessary for the drive such as error monitoring.
The system waits for input from (n3 → n4 → n5). When there is an input from the connector 8, the input signal (modulation signal) is analyzed (frequency analysis is performed in this example), and when the frequency is close to 0 Hz, it is determined that the input signal is due to the operation of the eject switch 7. Perform unloading process (n
6 → n7).

On the other hand, when the frequency of the input signal is not due to the operation of the eject switch 7, the process proceeds to the special mode processing to determine the type of the special mode (n6 → n11).
...). That is, it is determined which special mode the frequency of the input signal approximates to the frequency signal for setting, and the corresponding test is executed based on the determination (n11 → n12 → n13 → n14, n15, n1).
6).

When the input signal does not approximate the modulation signal of any special mode, the normal mode is returned to prevent malfunction.

[0026]

According to the invention as set forth in claim 1, since the signal for the special mode is inputted by also using the eject switch provided as an essential part in the optical disk drive device, a new input section (dip Since it is not necessary to provide a switch or the like), it is possible to reduce the space and cost.

According to the second aspect of the present invention, it is possible to distinguish signals for a plurality of special modes and to select one mode from a plurality of special modes according to the type of the signals. As a result, it is possible to reduce the space and cost by eliminating the need to provide the input section for the special mode for each mode. Further, when increasing the types of special modes, it suffices to set a signal for that type of special mode and input the signal from a connector, which facilitates the increase of types of special modes.

According to the third aspect of the invention, the malfunction can be prevented by returning to the normal operation mode when the input signal does not correspond to any special mode type.

[Brief description of drawings]

FIG. 1 is a block diagram of a main part of an optical disk drive device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a signal input by a modulation signal input unit.

FIG. 3 is a diagram illustrating a configuration example of a modulation signal analysis unit.

FIG. 4 is a flowchart showing a main processing procedure of the optical disk drive device.

FIG. 5 is a flowchart showing a main processing procedure of the optical disk drive device.

FIG. 6 is a diagram showing a configuration example of a conventional special mode selection device.

Claims (3)

[Claims] 1. A mode setting device for setting a normal operation mode for the optical disk drive device to perform a normal operation or a special mode different from the normal operation mode such as a test mode, wherein an eject switch of the optical disk drive device is provided. Different from the input signal from the eject switch from the connector to be connected, the special mode is set when a predetermined special mode signal is input, and the normal operation mode is set when the special mode signal is not input. And a mode setting device for an optical disk drive device, comprising: 2. A mode setting device for an optical disk drive device according to claim 1, further comprising means for determining a type of a special mode signal input from the connector and setting a different special mode depending on the type of the special mode signal. Mode setting device for optical disk drive device. 3. A mode setting device for an optical disk drive device according to claim 1, wherein a signal input from the connector does not match an input signal from an eject switch or a special mode signal. A mode setting device for an optical disk drive device, which is provided with means for setting a normal operation mode.