JPH04318778A - Electronic device - Google Patents

Abstract

PURPOSE:To easily restore the operating state to the original state by resetting the operating state set by the operation of an operation switch when an initializing switch is operated to set the operating state corresponding to the initial value stored in a storage means. CONSTITUTION:The user operates a prescribed switch of an operation switch circuit 13 to energize/deenergize a speaker 7, to adjust its output sound volume and to adjust a high sound/low sound level and a left/right balance. The circuit 13 stores the set operating state to a nonvolatile memory 11. When an initializing switch 14 is operated, the set operating state is reset by the operation of the operation switch 13 to set the operating state corresponding to the initial value stored in a storage ROM 9. Thus, the operation to restore the operating state to the standard operating state is much simplified.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electronic devices such as television receivers, video tape recorders, and the like.

0002

[Prior Art] For example, in a television receiver,
Various operating switches are provided to allow the user to select the desired operating state. This makes it possible, for example, to adjust the volume to a desired value, turn the speaker on or off, and further adjust the image quality. By operating this operation switch, the user can
You can watch television broadcasts in your preferred state that suits your usage environment.

0003

[Problems to be Solved by the Invention] A plurality of such operation switches are often provided, and when operated by a user who is generally inexperienced with adjustment operations, for example, audio may not be output or colors may appear on the image. There are times when it becomes impossible to attach. This state has come about as a result of the user's operation, but the user may determine that it is a failure and request a service person to repair it.

[0004] In addition, even if you do not request repair, it becomes difficult to know which of the many operation switches you have operated and how much, and it becomes difficult to restore the reception condition to the original reception condition, which has deteriorated from before the operation. There are times when I feel like putting it away.

[0005] The present invention has been made in view of this situation, and it is an object of the present invention to enable the operating state to be easily returned to a preset initial value.

[0006]

[Means for Solving the Problems] The electronic device of the present invention includes an operation switch means operated by a user to set a desired operating state, and a control means for controlling the operating state in response to the operation of the operation switch means. a storage means for storing an initial value regarding the operating state set by the operation switch means; and an operation for resetting the operation of the operation switch means to set the operating state corresponding to the initial value stored in the storage means. and initialization switch means.

[0007]

[Operation] In the electronic device configured as described above, when the initialization switch means is operated, the operating state set by the operation of the operation switch means is reset, and the operating state corresponding to the initial value stored in the storage means is changed. Set. Therefore, the operating state can be easily returned to its original state.

[0008]

Embodiment FIG. 2 is a block diagram showing the configuration of an embodiment of a television receiver to which the electronic device of the present invention is applied. Tuner 2 receives broadcast waves via antenna 1,
The video signal is output to the video processor 3, and the audio signal is output to the audio processor 4. The output of the video processor 3 is supplied to the CRT 5. Further, the output of the audio processor 4 is supplied to a speaker 7 via an amplifier 6.

For example, a control circuit 8 consisting of a microcomputer or the like controls the operation of each part according to a program stored in a ROM 9. This ROM9 also has
Initial value data of operating conditions are also stored. RAM10
Necessary data is stored at any time. The switch circuit 13 having a plurality of switches can select and adjust a predetermined operating state by operating the individual switches. The output of the switch circuit 13 is supplied to the control circuit 8 via the interface 12. Further, the operating state set by operating this switch circuit 13 is stored in the nonvolatile memory 11.

The switch 14 is a switch that is operated when the operating state set by the operation of the switch circuit 13 is reset to set the operating state corresponding to the initial value stored in the ROM 9 in advance. The commander 21 emits infrared rays by operating it, and the light detection circuit 15
The controller 21 receives this infrared rays and supplies commands input from the commander 21 to the control circuit 8 via the interface 12. The commander 21 allows commands similar to those obtained by operating the switch circuit 13 and switch 14 to be input.

Next, its operation will be explained. When the commander 21 is operated to instruct to turn on the power, the commander 21 outputs infrared rays. The photodetection circuit 15 detects this infrared ray and outputs a detection signal to the control circuit 8 via the interface 12. The control circuit 8 turns on the power of the device when receiving this detection signal. This makes the device ready for operation. Furthermore, when a predetermined channel selection signal is input by operating the commander 21, this signal is transmitted to the control circuit 8 via the photodetection circuit 15 and the interface 12.
supplied to The control circuit 8 outputs a signal corresponding to the received selection signal to the tuner 2. This allows tuner 2
receives the broadcast on the channel corresponding to the command.

The tuner 2 demodulates the radio waves received by the antenna 1 and separates them into a video signal and an audio signal. The video signal is output to a video processor 3, and the audio signal is output to an audio processor 4. The video processor 3 processes the input video signal, R,
It is output to the CRT 5 as G and B signals. Furthermore, the audio processor 4 processes the input audio signal,
The signal is supplied to a speaker 7 via an amplifier 6. In this way, the broadcast of the station designated by the commander 21 can be viewed.

On the other hand, by operating a predetermined switch in the switch circuit 13, the user can turn the speaker 7 on or off, adjust the volume output from it, and adjust the level of treble or bass. You can also adjust the left and right balance. Similarly, the color intensity (
You can also adjust image quality such as color), hue (HUE), brightness, sharpness, and contrast (picture).

Furthermore, if the device has the function of receiving satellite broadcasting, it is possible to select whether to use an internal decoder or an external decoder for reception. It is also possible to turn on or off the power of the converter for receiving satellite broadcasts.

When a predetermined command is input by the switch circuit 13, the control circuit 8 causes the nonvolatile memory 11 to store the operating state corresponding to the command. Then, each part is controlled in accordance with the stored value. This allows the user to select and adjust the desired operating state. This operating state is maintained even when the power is once turned off. Therefore, when the power is turned on again, the control circuit 8 reads out the data stored in the nonvolatile memory 11,
Set the operating state corresponding to the stored value.

Although it is possible for the user to set and adjust the desired operating state by operating the switch circuit 13, there is a possibility that the operating state may become unfavorable as a result of operating the switch circuit 13. There are cases where Alternatively, in extreme cases, an image may no longer be displayed on the CRT 5 or an audio signal may no longer be output from the speaker 7. Although the user can readjust the switch circuit 13 and return it to its original state, if the user is inexperienced with the operation, it is extremely difficult to return the switch circuit 13 to the state before the operation.

In such a case, the user turns on the switch 14. When the switch 14 is turned on, the control circuit 8
Data stored in the nonvolatile memory 11 is erased by operating the switch circuit 13. And ROM9
The initial values stored in advance are stored in the nonvolatile memory 11. As a result, the pre-stored initial operating state will be set from now on. The operating states of the initial values stored in advance in this ROM 9 are set as shown in Table 1, for example.

[0018]

[Table 1]

That is, the control circuit 8 executes the processing shown in the flowchart of FIG. 1 stored in the ROM 9. In step S1, it is determined whether or not the switch 14 is turned on. If it is not turned on, the process proceeds to step S2, and after other processing is executed, the process returns to step S1. If it is determined in step S1 that the switch 14 is turned on, the process proceeds to step S3, and the nonvolatile memory 11
Set the memory contents to the factory settings (initial values).

In the above, the operating state is adjusted and reset by operating the switch circuit 13 and the switch 14, but similar operations can also be performed by operating a predetermined key on the commander 21. It is possible to do so.

Although the present invention has been described above as an example in which it is applied to a television receiver, the present invention can also be applied to video tape recorders and other electronic devices.

[0022] Both the switch circuit 13 and the switch 14 are operated by general users, and are not operated by service personnel with specialized knowledge (though they can of course be used by service personnel). ). Therefore,
The switch circuit 13 and the switch 14 are designed so that they can be operated from outside the device without using a jig such as a screwdriver so that general users can easily use them.

[0023]

[Effects of the Invention] As described above, according to the electronic device of the present invention,
When the initialization switch means is operated, the operating state set by the operation of the operation switch means is reset and the operating state corresponding to the initial value stored in the storage means is set. The operation to return to the standard operating state becomes extremely simple, and there is less risk that general users will misidentify it as a malfunction.

[Brief explanation of drawings]

FIG. 1 is a flowchart explaining the operation in the embodiment of FIG. 2.

FIG. 2 is a block diagram showing the configuration of an embodiment of the electronic device of the present invention.

[Explanation of symbols]

2 Tuner 3 Video processor 4 Audio processor 8 Control circuit 9 ROM 10 RAM 11 Non-volatile memory 13 Switch circuit 14 Switch

Claims (1)

[Claims] 1. Operation switch means operated by a user to set a desired operating state; control means for controlling the operation state in response to the operation of the operation switch means; and a control means set by the operation switch means. a storage means for storing an initial value regarding an operating state; and an initialization switch means operated when resetting the operation of the operation switch means to set the operating state corresponding to the initial value stored in the storage means. An electronic device comprising: