JPH05101523A - Display device - Google Patents

Abstract

PURPOSE:To provide a display device where the operation state of a changeover switch is not erroneously recognized and this switch is freely arranged by displaying the invalidation of operation regardless of the operation of an operation switch at the time of switching the changeover switch to the invalidation side. CONSTITUTION:A play operation switch 2, a stop operation switch 3a, a forward search operation switch 3b, and a backward search operation switch 3c are arranged in the vicinity of a display means 1. If the changeover switch 4 is switched to the state to invalidate switching-on of each operation switch, a start circuit 9 is started to display the invalidation of operation on the display means 1 for a certain time by a control means 6 when each operation switch, for example, the operation switch 3a is operated. Thus, the operation state of the changeover switch 4 is not erroneously recognized and is easily and clearly discriminated, then the set position of the switch 4 is freely arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device having a changeover switch for invalidating the operation of an operation switch.

[0002]

2. Description of the Related Art In recent years, display devices have been used widely as their display contents have increased and have become multifunctional. An example of the above-described conventional display device will be described below with reference to the drawings.

FIG. 6 shows an audio device equipped with conventional display means, and FIG. 7 shows its block configuration. In FIG. 6, reference numeral 1 denotes a display means provided in front of the audio equipment main body 5 of the portable CD player, and in the vicinity of the display means 1, a play operation switch 2, a stop operation switch 3a, a front search operation switch 3b, and a rear side. A search operation switch 3c and a changeover switch 4 are provided. In FIG. 7, the play operation switch 2 is a diode 7a.
It is provided between the input port of the control means 6 and the changeover switch 4 together with other various operation switches 3a, 3b, 3c. Further, the play operation switch 2 has a start input port 1 of a power supply boosting circuit 9 for boosting the battery 8 to a power supply voltage required for the control means 6 through a diode 7b.
It is connected to 0. The control means 6 is the disk reproducing means 1
When the play control switch 2 is turned on by controlling the device 3, a compact disc (hereinafter referred to as a CD) 1 which is a music source
The digital signal is read from 2, and when the operation information of the stop operation switch 3a is input, the reproduction operation is stopped, and when the front search operation switch 3b is turned on, the CD track is moved to the next track, and the front search operation switch 3b is turned off.
In accordance with the number of N operations, the disc reproducing means 13 is controlled so as to perform the music selection operation to the front side such as to the next track, and conversely when the rear search operation switch 3c is turned on. Further, the control means 6 performs digital signal processing / DA so as to convert the digital signal of the CD 12 read by the disc reproducing device 13 into an analog signal.
Control the converter 14. This analog signal is amplified by the amplifier 15 and output from the output terminal 16 as a music signal. Even if each of the operation switches 2, 3a, 3b, and 3c is operated, if the changeover switch 4 is OFF, it is not input to the control means 6 and does not operate. Therefore, each of the operation switches 2, 3a, 3b, This prevents the 3c from being accidentally operated by hitting another object.

[0004]

However, since the conventional display means as described above cannot display when the power of the main body is OFF, it is determined whether or not the operation of the operation switch is effective depending on the position of the changeover switch. Was necessary. Therefore, there is a problem that it is difficult to determine the position of the changeover switch, and the operation may be erroneous unless it is provided near the operation switch and the display means.

In view of the above-mentioned conventional problems, the present invention has been made for the purpose of providing a display device which does not erroneously recognize the operating state of the changeover switch and does not select the installation place of the changeover switch. ..

[0006]

In order to solve the above problems, a display device of the present invention comprises a plurality of operation switches, a changeover switch for invalidating the operation of the operation switches, the operation switch and the changeover switch. A control circuit for inputting operation information of the switch; a starting circuit for activating the control circuit by turning on at least one operation switch of the plurality of operation switches; and a display device for displaying an operation or operating state. In a state where the changeover switch is changed to a state in which the operation input of the operation switch is invalidated, when the operation switch is operated, the starting circuit is activated, and the control means indicates that the operation is invalid for a certain time. It is configured to display.

[0007]

According to the present invention, when the operation switch is operated in the OFF state in which the changeover switch is changed to the state in which the operation input of the operation switch is invalidated by the above-mentioned configuration, the starting circuit is started and the control means is operated. Since the fact that the operation is disabled is displayed for a certain period of time on the display means, it becomes a display device in which the operation state of the changeover switch is easy to see and the arrangement thereof is free.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the display device of the present invention will be described in detail below with reference to FIGS.

FIG. 1 is a block diagram of an audio device equipped with a display means according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a display device, on which the operating state of the equipment, the degree of battery consumption, etc. are displayed by the display output of the control means 6. At the input port of the control means 6, the play operation switch 2 and various operation switches 3a, 3b, 3c.
And the changeover switch 4 is connected. The battery 8 is boosted by the power booster circuit 9 and is supplied with power as the power supply voltage required by the control means 6. The power supply booster circuit 9 has an input port 1
The operation is started by the play operation switch 2 connected to 0, and the operation is continued by the output signal of the control means 6 connected to the input port 11. The control means 6 controls the disc reproducing means 13 and the signal processing / DA converter 14 in the same manner as in the conventional case to reproduce the music signal of the CD and select the music, and amplifies the analog music signal with the amplifier 15. Output to the output terminal 16.

The operation of the display device of the audio equipment configured as described above will be described below.

FIG. 2 shows a flow chart of the control means of the display device in the first embodiment of the present invention. First, in step 1, when the play operation switch 2 is turned on, the diode 7b starts the operation of the power supply booster circuit 9 from the input port 10 of the power supply booster circuit 9 to boost the battery 8 to the power supply voltage required by the control means 6 and the control means 6 To the control means 6 through the diode 7a. In step 2, the control means 6 supplied with power by the play operation switch 2 outputs a signal to the input port 11 of the power supply booster circuit 9 to activate the power supply booster circuit 9 to maintain the power supply. The control means 6 determines whether or not the changeover switch 4 is ON in step 3, and when it is OFF, displays that the operation is invalid on the display means 1 in step 4 and executes this for a certain period of time in step 5. To do. An example of the display of this display means 1 is shown in FIG. After a certain period of time, the control means 6 turns off the output to the input port 11 of the power supply booster circuit 9 in step 6 to stop the display device.

At step 3, the changeover switch 4 is turned on.
Then, as shown in step 7, the control means 6 controls the disc reproducing means 13, the digital signal processing / DA converter 1
4, the music signal of the CD 12 is amplified by the amplifier 15 and output to the output terminal 16, and the display means 1 displays that the reproduction operation state is set. An example of the display of this display means 1 is shown in FIG. The track number and time counter are displayed. This reproduction state continues until the operation switches 3a, 3b, 3c for stop, forward search, and backward search are operated. If the stop operation switch 3a is turned on, it is determined in step 8 and in step 6 the same as above. Stop. When the front search operation switch 3b is operated, it is determined in step 9, and when the rear search operation switch 3c is operated, it is determined in step 10. After performing the front side or rear side music selection operation in steps 11 and 12, respectively, step 7 is performed.
Return to the playback state with and continue this.

If the changeover switch 4 is OFF in the above, the fact that the operation is ineffective is displayed on the display means 1 for a certain period of time, for example, as shown in FIG. 3, only when the play operation switch 2 is operated. Alternatively, it may be made to blink by making it conspicuous.

As described above, according to this embodiment, the state of the changeover switch can be displayed on the display means without always supplying power.

FIG. 5 is a flow chart of a display device showing a second embodiment of the present invention. In this embodiment, in the same manner as described above, in step 7, when the audio device is in the reproducing state, the display means 1 displays, for example, the track and the time counter as shown in FIG. In step 8, the reproduction state is continued until the stop operation switch 3a is operated and it is determined that the stop operation switch 3a is ON. In step 13, it is further determined whether the changeover switch 4 is ON or OFF. If the changeover switch 4 is ON, the power supply booster circuit 9 is stopped in step 6. If the changeover switch 4 is OFF, the fact that the operation is disabled is displayed on the display means 1 for a certain time in steps 14 and 15 while continuously maintaining the reproduction state of the audio device, for example, as shown in FIG. Although the stop operation switch 3a has been described here, also in the case of the front and rear search operation switches 3b and 3c, if the changeover switch 4 is ON, the operation is performed according to each operation information input, and if the changeover switch 4 is OFF, the operation is performed. Similarly to the above, while continuing the reproduction operation, the display unit 1 displays that the operation is invalid for a certain period of time, and after the certain period of time, the display unit 1 also returns to the reproduction state.
As described above, according to the present embodiment, the state of the changeover switch can be displayed by one display unit that normally displays the reproduction state and the like.

In the embodiment of the present invention, the portable CD player uses only one play operation switch to activate the activation circuit. However, like a tape recorder, a plurality of operations such as direct play, fast forward and rewind can be performed from a stopped state. For audio equipment that can be operated with the operation switch,
The activation circuit may be activated by operating all of the plurality of operation switches.

[0018]

As described above, the present invention comprises a plurality of operation switches, a changeover switch for invalidating the operation of those operation switches, and a control means for inputting the operation information of the operation switches and the changeover switches. , At least one operation switch of the plurality of operation switches is turned on
A start-up circuit for activating the control means and a display means for displaying an operation or operating state, and when the changeover switch is changed to a state in which the operation input of the operation switch is invalidated, the operation switch is turned on. When the operation is started, the start-up circuit is activated, and the control means is configured to display on the display means that the operation is invalid for a certain period of time. And it can be clearly distinguished,
Moreover, it is possible to freely arrange the operating switch without having to provide the operating switch in the vicinity of the operating switch or the display means.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a display device according to an embodiment of the present invention.

FIG. 2 is a flowchart of the display device according to the first embodiment of the present invention.

FIG. 3 is a display diagram of a display unit in a state in which an operation switch by a device selection switch is prohibited.

FIG. 4 is a display diagram of a display unit in a reproduction operation state of the device.

FIG. 5 is a flowchart of a display device according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a device equipped with conventional display means.

FIG. 7 is a block configuration diagram of a conventional display means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 display means 2 play operation switches 3a, 3b, 3c each operation switch 4 changeover switch 5 device body 6 control means 8 battery 9 power supply booster circuit

Claims (2)

[Claims] 1. A plurality of operation switches, and a changeover switch for invalidating the operation of the operation switches,
Control means for inputting operation information of the operation switch and the changeover switch, a starting circuit for activating the control means by turning on at least one operation switch of the plurality of operation switches, and a display for displaying an operation or operation state Means for switching the operation input of the operation switch to a state in which the operation switch is invalidated, the starting circuit is activated when the operation switch is operated, and the control means disables the operation on the display means. A display device characterized by being configured to display a certain thing for a certain period of time. 2. The control means operates any one of the plurality of operation switches when the changeover switch is changed to a state in which the operation input of the operation switch is invalidated after the activation circuit is activated. 2. The display device according to claim 1, wherein even when the operation switch is operated, the operation of the operation switch is controlled to be disabled, and the display means displays that the operation is disabled for a certain period of time.