JP2003087705A - Power on/off device and power on/off method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that are ordinary power off and power-saving off due to transition to a power-saving mode are troublesome. SOLUTION: When power is turned on, an operation detection circuit monitors the presence of a depression operation of a power key. When the operation detection circuit detects the depression operation, a time detection circuit measures a depression time of the power key to discriminate short time depression (<=2 seconds) or long time depression (>2 seconds). In this case, a control circuit performs ordinary power off control for the short time depression or power-saving off control for the long time depression. Thus, troublesome turning off of power in a video device can be avoided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power on / off device and a power on / off method.

[0002]

2. Description of the Related Art Conventionally, in a power on / off device mounted on a video device, when a power key is pressed when the power is off, the power supply circuit turns off power supply to each device such as a tuner and a video IC. Then, when the power supply from the power supply circuit to each device is turned off and a predetermined time has elapsed, the power saving mode is entered to execute a power saving operation such as turning off the illumination of the display.

[0003]

The above-described conventional power on / off device has a problem that it is troublesome to turn off the normal power and to turn off the power saving by shifting to the power saving mode. Note that Japanese Patent Laid-Open No. 11-198993 changes the control to be executed depending on how the operation key is pressed down, but does not disclose a configuration for changing the control depending on how the power key is pressed down. The present invention has been made in view of the above problems, and an object of the present invention is to provide a power on / off device and a power on / off method capable of eliminating the troublesomeness at the time of turning off the power of a device.

[0004]

In order to achieve the above object, the invention according to claim 1 includes a power supply key for receiving a power on / off operation by a pressing operation, and an operation detection circuit for detecting an operation on the power supply key. When the operation detection circuit detects the same operation, a power supply on / off device including a control circuit that turns on and off the power supply to the device for each operation, including a time detection circuit that detects the pressing time of the power key, The control circuit, when the push-down operation is detected by the operation detection circuit, if the push-down time detected by the time detection circuit is within a predetermined threshold value, turning on and off the power supply to the device, When the push-down time exceeds the threshold value, power saving control is executed. That is, when the power on / off operation by the pressing operation is accepted by the power key, the operation detection circuit detects this operation, and the control circuit supplies power to the device every time the operation is detected by the operation detection circuit. Turn on and off.

As described above, when the power on / off operation is performed, the time detection circuit detects the pressing time.
Then, when the detected depressing time exceeds a predetermined threshold value, the control circuit executes a control different from the on / off of the power supply. Therefore, the power supply on / off device has not only a function for turning on / off the power supply but also a function for executing a plurality of controls according to the pressing time at the time of operation. For example, when turning off the power of a device, if there is a normal power off to continue the supply of standby power and a power saving off to further reduce the output power, the Since the power-off and the power-saving off are separately performed, the user is not bothered by the normal power-off and the power-saving off.

In the above-mentioned claim 1, the power supply on / off device is realized by a concrete structure. However, since such a structure is only an example, the present invention can be grasped in a wider range. As one example thereof, the invention according to claim 2 includes an operation receiving means for receiving a power on / off operation, an operation detecting means for detecting an operation in the operation receiving means, and a time detecting means for detecting an operation time in the operation receiving means. When the operation detecting means detects the operation, the control means executes different control depending on the length of the operation time detected by the time detecting means. That is, when the power-on / off operation is accepted by the operation accepting means, the operation detecting means detects this operation, and the time detecting means detects the operation time in the operation accepting means. Thus, when the operation detecting unit detects the operation, the control unit executes different control depending on the length of the operation time detected by the time detecting unit.

From the viewpoint that the operation accepted by the operation accepting means may be any operation for turning on / off the power source, the operation key may be depressed, or the touch panel may be touched. However, the operation mode at the time of operation is not limited. Therefore, the power supply on / off device has not only a function for turning on / off the power supply but also a function for executing a plurality of controls according to the pressing time at the time of operation, as in the first aspect. Will be there. The different controls mentioned here are
Since it means two or more types of control including power on / off control, it may be two types of control or three or more types of control.

As an example of a configuration in which two types of control can be executed separately, the invention according to claim 3 is the power on / off device according to claim 2, wherein the control means is the operation detection means. When the above operation is detected,
When the operation time detected by the time detection means is within a predetermined threshold value, the power supply to the device is turned on and off,
When the same operation time exceeds the same threshold value, a control different from turning on / off the power supply is executed. That is, the control means, when the operation detecting means detects the operation, compares the operation time detected by the time detecting means with a predetermined threshold value. When the operation time is within the same threshold value, power on / off control for turning on / off the power supply to the device is executed, and when the operation time exceeds the same threshold value, control different from the power on / off control is executed. To do. Therefore, the user can selectively use the normal power-on / off operation and another control operation only by distinguishing the simple operation of changing the operation time.

As an example of control different from the power-on / off control mentioned here, the invention according to claim 4 is the above-mentioned claim 3.
In the power on / off device described in the above,
When the operation time exceeds the threshold value, the power saving control is executed. That is, the control means is
When the operation time is within a predetermined threshold value, the power on / off control for turning on / off the power supply to the device is executed, and when the operation time exceeds the threshold value, the output power of the device is further reduced. The power saving control of is executed.

It is also possible to provide an additional structure so that control can be performed according to the needs of the user. As an example thereof, the invention according to claim 5 is the above-mentioned claim 2
In the power supply on / off device according to any one of claims 4 to 5, a second operation receiving unit that receives an operation to prohibit execution of a control different from the turning on / off of the power supply, and an operation in the second operation receiving unit are detected. And a second operation detecting means for controlling the power supply when the operation is detected by the second operation detecting means. That is, the second operation receiving means waits for an operation of prohibiting execution of a control different from the normal power on / off control, and when the second operation detecting means detects the same operation, the control means causes the normal operation. The execution of control that is different from the power on / off control is prohibited. For this reason, a user who frequently uses a control different from the normal power on / off control can always keep the different control executable, while the different control is not frequently used. The user can prohibit the execution of the different controls in order to prevent erroneous operations.

Further, as another example of the additional configuration, the invention according to claim 6 is the power on / off device according to any one of claims 2 to 5, wherein the control means supplies power to the device. A time measuring means for measuring an elapsed time from turning off, a third operation accepting means for accepting an operation to permit execution of a control different from the on / off of the power supply, and an operation in the third operation accepting means. And a third operation detecting means for detecting, wherein the control means makes a setting to permit execution of the different control when the third operation detecting means detects the operation, and the time measuring means. When the elapsed time measured in 1 exceeds a predetermined threshold value, control different from turning on / off the power supply is executed. That is, the third operation receiving means receives an operation for permitting execution of a control different from turning on / off the power supply, and when the third operation detecting means detects an operation in the third operation receiving means, The control means is
The setting is made to permit different control.

Further, the time measuring means measures the elapsed time from turning off the power supply when the third operation detecting means detects the operation for turning off the power supply. When the elapsed time measured by the time measuring means exceeds a predetermined threshold value, the control means automatically performs control different from ON / OFF of the power supply regardless of whether or not the operation receiving means is operated. To execute. Therefore, even when the user forgets the operation to execute the different control, the different control can be executed.

By the way, the above control method can be realized not only as a substantial device configuration but also as a method. As an example, the invention according to claim 7 is
When a power on / off operation is accepted by the operation accepting means, an operation time for the accepted operation is detected for the operation accepting means, and different control is executed according to the length of the operation time. is there. That is, the configuration as the above device can also be realized as a method. It is needless to say that the configurations according to claims 2 to 6 can be similarly applied as a method.

[0014]

As described above, the present invention can realize a power supply on / off device having a specific configuration, which can eliminate the troublesomeness at the time of turning off the power supply in a device. Further, according to the invention of claim 2 or claim 4, it is possible to provide a power supply on / off device capable of eliminating the troublesomeness at the time of turning off the power supply in the device. Further, according to the invention of claim 3, the control to be executed can be easily distinguished only by detecting the length of the operation time. Further, claim 5
According to the present invention, it is possible to prevent an erroneous operation. Furthermore, according to the invention of claim 6, it is possible to prevent the power consumption of the device from being wasted. Further, according to the invention of claim 7, it is possible to provide a power supply on / off method capable of eliminating the troublesomeness at the time of turning off the power supply in the device.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Here, embodiments of the present invention will be described in the following order. (1) Description of video device: (2) Description of control associated with depressing operation of power key: (3) Description of first modified example: (4) Description of second modified example: (5) Summary:

(1) Description of Video Device: FIG. 1 is a block diagram showing the main configuration of a video device according to an embodiment of the present invention. In the figure, a microcomputer 10 having a predetermined program execution environment is provided, and a tuner 20, a video IC 30, a tape mechanism 40, etc. are connected to the microcomputer 10.

The tuner 20 receives a corresponding broadcast signal based on the reception frequency designated by the microcomputer 10,
The intermediate frequency signal is output to the video IC 30 by performing predetermined signal processing. The video IC 30 generates a video signal for recording on a video tape based on the intermediate frequency signal output from the tuner 20, and also generates a video signal and an audio signal based on the video signal reproduced from the video tape. ing. The tape mechanism 40 is provided with various heads for recording / reproducing video signals to / from the video tape, a tape drive mechanism for running the video tape, and the like. In addition, the microcomputer 10 has a display panel 11 for displaying the running status and time of the video tape.
For the operation panel 12 in which a group of keys including the power key 12a are arranged, the light receiving circuit 13 for receiving the infrared signal transmitted from the remote control transmitter 50, the microcomputer 10, the tuner 20, the video IC 30, and the tape mechanism 40. Is connected to a power supply circuit 14 for supplying power.

(2) Description of control accompanying depression of the power key: The operation panel 12 or the remote control transmitter 5 will be described below.
The power supply control executed by the microcomputer 10 when the power supply keys 12a and 51 arranged at 0 are pushed down will be described. FIG. 2 is a schematic diagram showing the power supply control executed in response to the operation of pressing the power key.

When the power is on, the microcomputer 10
As shown in FIG. 3, the power detection key 12a,
The presence or absence of a push-down operation on 51 is monitored. Here, when the pressing operation of the power supply keys 12a and 51 is detected, the time detecting circuit is used to determine whether the pressing operation is a Cong pressing (≦ 2 seconds) or a long pressing (> 2 seconds). Then, the pressing time of the power supply keys 12a and 51 is measured, and the control circuit turns off the power supply (steps S100 to S120). Then, the microcomputer 10 outputs a control signal from the control circuit to the power supply circuit 14 to turn off the power supply, so that the power supply circuit 14 supplies a large amount of power to the microcomputer 10, the tuner 20, the video IC 30, and the tape mechanism 40. Stop the part and supply only standby power to each device.

The microcomputer 10 continues to output standby power from the power supply circuit 14 as described above, if the pressing operation on the power supply keys 12a and 51 is to press the chong.
If the measured pressing time is longer than 2 seconds, it is determined that the pressing operation on the power keys 12a and 51 is a long pressing, and the power saving mode is entered to further reduce the output power from the power circuit 14 ( Steps S130 and S
140). Then, for example, in the display panel 11, when the power is turned off by pressing Chong, the illumination continues to be turned on so that the minimum display such as the time is continued. When shifting to, the illumination is turned off so that all the display disappears. Further, when the power is off, the microcomputer 10 detects the pressing operation of the power supply keys 12a and 51 regardless of whether the power saving mode is set or not, as shown in FIG. Regardless of whether or not the button is pressed for a long time, a control signal to the effect that power supply is started is output to the power supply circuit 14 (steps S200 and S210).

(3) Description of First Modification: In the present embodiment, when the power keys 12a and 51 are pressed for a long time when the power is turned on, the power saving mode is always entered, but the control according to the user's needs is performed. It is also possible to provide an additional configuration so that the above can be achieved. That is, the setting menu for setting the time and the like is provided with an item of the power saving mode, and the permission / prohibition can be set. And in this setting menu,
As shown in FIG. 5, when the operation to prohibit the power saving mode is performed, the transition to the power saving mode is prohibited, and the operation to allow the power saving mode is performed. , Allow the transition to the power saving mode as usual (step S
300-S320).

For this reason, as shown in FIG. 6, when the shift to the power saving mode is prohibited, the microcomputer 10 keeps pressing the power keys 12a and 51 for a long time in the same manner as the normal power source. When only turning off is executed and the shift to the power saving mode is allowed, when the power key is long pressed, the power saving mode shifts normally (steps S400 to S4).
50). Therefore, a user who frequently uses the power saving mode can always be able to shift to the power saving mode, while a user who does not use the power saving mode very often. In that case, it is possible to prohibit the shift to the power saving mode in order to prevent an erroneous operation. As described above, the microcomputer 10 that detects the item display of the power saving mode and the setting of permission / prohibition constitutes the second operation receiving unit and the second operation detecting unit according to the present invention.

(4) Description of Second Modification: Also, for example,
When going out for a long time, such as when traveling, the power key 1
If you forget to press and hold 2a, 51 and go out, standby power will continue to be supplied to each device in the video device,
Power consumption increases. In order to avoid such a case, when the power is off for a long time, the power saving mode may be automatically set according to the user's request.

That is, an automatic power saving mode item is provided in the setting menu to enable / disable the setting. Then, in the setting menu, as shown in FIG. 7, when an operation for prohibiting the automatic power saving mode is performed, the transition to the automatic power saving mode is prohibited and the automatic power saving mode is allowed. When the operation to that effect is performed, the shift to the automatic power saving mode is permitted (steps S500 to S5).
20). Therefore, as shown in FIG. 8, when the shift to the power saving mode is prohibited, the microcomputer does not shift to the power saving mode even after 24 hours have passed since the power was turned off. When the shift to the power is permitted, the shift to the power saving mode is automatically performed when 24 hours have passed after the power was turned off (steps S600 to S64).
0). As described above, the item display of the automatic power saving mode constitutes the third operation receiving means according to the present invention, and the microcomputer 10 that detects the setting of permission / prohibition and measures the elapsed time is
The time measuring means and the third operation detecting means according to the present invention are configured.

(5) Summary: In this embodiment, when the power is on, the operation detection circuit monitors whether or not the power key has been pressed, as shown in FIG. here,
When this push-down operation is detected, the time detection circuit measures the push-down time of the power key and pushes down the choke (≤ 2 seconds).
Or a long press (> 2 seconds). At this time, the control circuit executes normal power-off control if the button is pressed, and executes power-saving off control if the button is pressed for a long time. Therefore, it is possible to eliminate the inconvenience of turning off the power supply of the video device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main configuration of a video device according to this embodiment.

FIG. 2 is a schematic diagram showing power supply control executed in response to a pressing operation of a power key.

FIG. 3 is a flowchart showing a procedure of power supply control executed when the power is turned off.

FIG. 4 is a flowchart showing a procedure of power supply control executed when the power is turned on.

FIG. 5 is a flowchart showing control associated with menu setting performed in the first modified example.

FIG. 6 is a flowchart showing a procedure of power control executed when the power is turned off in the first modification.

FIG. 7 is a flowchart showing control associated with menu setting performed in a second modified example.

FIG. 8 is a flowchart showing a procedure of power supply control executed when the power is turned off in the second modification.

FIG. 9 is a block diagram showing an outline of power-on / off control performed in the present embodiment.

[Explanation of symbols]

10 ... Microcomputer 11 ... Display panel 12 ... Operation panel 12a ... power key 13 ... Light receiving circuit 14 ... Power supply circuit 20 ... Tuner 30 ... Video IC 40 ... Tape mechanism 50 ... Remote control transmitter 51 ... Power key

Claims (7)

[Claims] 1. A power key for accepting a power on / off operation by a pressing operation, an operation detection circuit for detecting an operation of the power key, and when the same operation is detected by the operation detection circuit, a device is operated for each operation. In a power on / off device including a control circuit for turning on / off the power supply of the power supply key, a time detection circuit for detecting a pressing time of the power key is provided, and the control circuit is configured to detect the pressing operation by the operation detection circuit. If the pressing down time detected by the time detection circuit is within a predetermined threshold value, the power supply to the device is turned on / off, and if the pressing down time exceeds the threshold value, the power saving control is executed. Power on / off device characterized by. 2. An operation accepting means for accepting a power on / off operation, an operation detecting means for detecting an operation in the operation accepting means, a time detecting means for detecting an operation time in the operation accepting means, and the operation detecting means. A power-on / off device comprising: a control unit that performs different control depending on the length of the operation time detected by the time detection unit when the operation is detected. 3. The power supply to the device, when the operation detecting means detects the operation, and the operation time detected by the time detecting means is within a predetermined threshold value. 3. The power on / off device according to claim 2, wherein when power is turned on and off, and when the operation time exceeds the same threshold value, control different from on and off of the same power supply is executed. 4. The power on / off device according to claim 3, wherein the control means executes power saving control when the operation time exceeds the threshold value. 5. A second operation receiving means for receiving an operation for prohibiting execution of a control different from turning on / off of the power supply, and a second operation detecting means for detecting an operation in the second operation receiving means, 5. The control means prohibits execution of control different from on / off of the power supply when the operation is detected by the second operation detecting means, the control being prohibited. The power on / off device described in 1. 6. A time measuring means for measuring an elapsed time after the power supply to the device is turned off by the control means, and an operation for permitting execution of control different from turning on / off of the power supply. The third operation receiving means and the third operation detecting means for detecting the operation in the third operation receiving means are provided, and the control means performs the different control when the third operation detecting means detects the operation. Is set to allow the execution of the power supply, and when the elapsed time measured by the time measuring means exceeds a predetermined threshold value, the control different from the ON / OFF of the power supply is executed. The power on / off device according to any one of claims 2 to 5. 7. When a power-on / off operation is accepted by the operation accepting means, the operation time of the accepted operation performed on the operation accepting means is detected, and different control is performed depending on the length of the operation time. A power-on / off method comprising: