JPH0526823Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an adjustment operating device suitable for use in channel presetting of a television, VTR, etc. equipped with an electronic tuner.

[Summary of the idea]

This invention is an adjustment operation device suitable for channel presetting of TVs or VTRs equipped with an electronic tuner, in which the display section that displays the time during normal operation can be changed to a display corresponding to each step of the adjustment mode. In addition to the configuration, the button group is configured to be used for each of multiple adjustment modes, thereby reducing the number of operation buttons that were previously required, simplifying the operation members, and improving operability. This is how it was done.

[Conventional technology]

For TVs, VTRs, etc. that use voltage synthesizer type TV tuners, tuning data corresponding to the tuning voltage when receiving the desired channel is stored in advance in memory when shipped from the factory. A preset has been made regarding the position. Furthermore, a plurality of operation buttons related to channel presets are provided so that the user can preset channels as needed.

For example, FIG. 4 shows the external appearance of a channel preset operating device in a conventional VTR. In FIG. 4, reference numeral 30 is the front panel, and reference numeral 31 is the upper panel. In the recess 39 of the upper panel 31, which is normally closed by an opening/closing lid, a group of buttons 32 to 36 related to channel presets are arranged. is installed.

When a channel preset is to be performed, the preset button 32 is first pressed to enter the preset mode. Either the UP button 37 or the DOWN button 38 for channel selection is pressed in order to select the position to be preset. By pressing the + button 33 for tuning, the tuning voltage is updated in the direction of increasing the tuning frequency,
Further, by pressing the - button 34 for tuning, the tuning voltage is updated in the direction of decreasing the tuning frequency, and the television signal of the desired broadcasting station is tuned. In this state, the tens digit of the channel number is set using the channel number setting button 35, and the ones digit is set using the button 36, and a channel number corresponding to the position is assigned.

Such a procedure is performed for each position, and when presetting is completed for all positions, the preset button 32 is pressed again to cancel the preset mode and return to the normal mode.

[Problem that the invention attempts to solve]

However, as mentioned above, even for channel presets that are used infrequently, a large number of operation buttons are required on the adjustment operation device, and if operation buttons for other adjustment modes are included, the switch group becomes complicated and small. Not only was there a problem in terms of space, but there were still some issues regarding operability.

Therefore, an object of this invention is to provide an adjustment operation device with a reduced number of operation buttons and excellent operability.

[Means for solving problems]

This invention is an adjustment operation device that sets an adjustment mode, and has an up button 15, a down button 16, and a forward button 17 that are operated in the set adjustment mode, and displays the time in normal operation and the adjustment display in adjustment mode. This is an adjustment operation device characterized in that a display section 8 that can be changed to a button group 15, 16, 17, and a display section 8 are used in a plurality of adjustment modes.

[Effect]

The up button 15 and down button 16, which are used for sequential tuning in the normal mode, are also used in each adjustment mode, and the up button 15 and down button 16 are used to perform adjustment operations for each step of the mode, and the forward button 17 is used to sequentially select a predetermined channel. Moved to step. Further, a display signal is formed in the microcomputer 6 in a form corresponding to each step of the mode, and a commonly used display means 10
The information is displayed in a format that is easy to visually confirm.

[Example] Hereinafter, an example of this invention will be described with reference to the drawings. FIG. 1 shows an embodiment in which this invention is applied to, for example, a VTR. In FIG. 1, reference numeral 1 indicates an antenna for receiving television broadcasts.

The received output of antenna 1 is supplied to tuner circuit 2 . Further, a control signal from the microcomputer 6 is supplied to the tuner circuit 2, and a tuning voltage is formed in the tuner circuit 2 based on the control signal. A high frequency signal of a desired channel is selected from among the high frequency signals received by the antenna 1 in a form corresponding to this channel selection voltage, and the selected signal is converted into an intermediate frequency signal of a predetermined frequency.
An intermediate frequency signal formed in tuner circuit 2 is supplied to IF circuit 3.

In the IF circuit 3, a video signal component and an audio signal component are extracted from the intermediate frequency signal, video detection is performed, and audio detection is also performed to form a video signal and an audio signal, respectively. Video signal is IF
An audio signal is output from the circuit 3 and taken out from the terminal 4, and an audio signal is output from the IF circuit 3 and taken out from the terminal 5. In addition, in the IF circuit 3,
A signal indicating a change in the intermediate frequency is formed, this signal is supplied to the microcomputer 6, and the AFT is applied so that the frequency of the intermediate frequency signal becomes a predetermined value.
An action is taken.

The microcomputer 6 is supplied with a command signal formed in accordance with the operating state of an operating section 9 disposed on the front panel of the VTR. The microcomputer 6 is set to the normal mode or each adjustment mode based on a command signal from the operation unit 9.

In the normal mode, the microcomputer 6
The non-volatile memory 7
The channel selection data stored in the microcomputer 6 is sequentially read out to form a control signal for selecting a reception channel, and also to form a display signal for the time and channel number of a clock built into the microcomputer 6. A display signal formed by the microcomputer 6 is supplied to a display section 8 disposed on the front panel of the VTR, and the time and channel being received are displayed.

FIG. 2 shows the appearance of the display section 8 and operation section 9 provided on the front panel of the VTR. As shown in FIG. 2, the operation unit 9 has four buttons 11 to 14 for selecting adjustment modes, an up button 15, a down button 16, a forward button 17, and a CLEAR/SKIP button.
It has a button 18. Further, the display section 8 includes, for example, a liquid crystal display board 10 as a display means.

The button indicated by 11 is used to adjust the time, and when button 11 is pressed, the mode is set to time adjustment mode, and the time of the clock built in the microcomputer 6 can be adjusted. The button indicated by 12 is used when setting the timer, and when button 12 is pressed, the timer setting mode is entered, and settings such as automatic channel selection and automatic power ON/OFF based on the clock built into the microcomputer 6 are possible. It is said that The button indicated by 13 is used for channel preset, and when button 13 is pressed, the channel preset mode is entered, and the channel selection data stored in the nonvolatile memory 7 can be changed. The button indicated by 14 is used for fine adjustment of the tuning frequency. When the button 14 is pressed, the fine adjustment mode is entered, the AFT operation is prohibited, and the tuning frequency can be shifted within a predetermined frequency range. be done.

In addition, an up button 15 and a down button 16
are sequentially used for channel selection in the normal mode in which none of the adjustment mode selection buttons 11 to 14 are pressed, and are used for adjustment operations in each adjustment mode. The forward button 17 is used in each adjustment mode to move to the next step in a predetermined adjustment procedure. CLEAR/SKIP button 18 is
This is used to specify a channel to be skipped in the channel preset mode, and is also used to clear data, etc. in other adjustment modes.

The microcomputer 6 is put into various modes in accordance with the operating states of the respective buttons of the operating section 9 described above, and display signals corresponding to each step of each mode are generated in the microcomputer 6.
This display signal is supplied to the display section 8. On the liquid crystal display board 10, a display is made in a form that is easy to visually confirm based on a display signal generated by the microcomputer 6.

For example, channel presetting in this embodiment will be described with reference to FIGS. 3A-3D. As shown in FIG. 3A, in the normal mode, the time is displayed in the area 21 of the liquid crystal display board 10, the minutes are displayed in the area 22, and the channel number being received is displayed in the area 23 at the right end. is displayed.

First, button 13 is pressed to enter channel preset mode. When the mode is shifted to the channel preset mode, the display format of the liquid crystal display panel 10 which had been displaying the time and channel number shown in FIG. 3A changes to that shown in FIG. 3B.

As shown in FIG. 3B, a position corresponding to the storage area of the channel selection data of the nonvolatile memory 7 is displayed in the area 22 where the minutes were displayed, and this display blinks. Further, in the left side area 20 of the liquid crystal display board 10, where no display was made in the normal mode, L indicating the band of the reception channel,
Either H or U is displayed. In other words, L
is the lower frequency band in the VHF band (70~90MHz)
H indicates the high frequency band in the VHF band (170
~222MHz), and U indicates the entire UHF band (470~
770MHz). Further, in the area 21 where the hours were displayed, a bar is displayed based on the channel selection data for each of the L, H, and U bands.

Here, by pressing the up button 15, the position display is incremented (for example, 1 →
2...12), when the down button 16 is pressed, the position display is sequentially moved down (for example, 12).
→11…1). At this time, the area 23 of the liquid crystal display board 10
Displays the channel number corresponding to the channel selection data stored in each position or whether or not the channel was targeted for skip processing. Further, in the area 20 and the area 21, a display is made based on the channel selection data stored in each position.
When the desired position is selected, press the forward button 17.
is pressed.

When the forward button 17 is pressed, the storage area of the channel selection data in the non-volatile memory 7 corresponding to the current position is targeted for rewriting, and as shown in FIG.
The display form of the liquid crystal display panel 10 shown in FIG. 3C is shown in FIG. In the case of the display example shown in FIG. 3C, the feed button 17 is pressed with position 5 selected, and the area 2
3 is displayed as "--", indicating that position 5 was targeted for skip processing, that is, for skip tuning. In this state, the band display of the reception channel in area 20 blinks.

Here, when the up button 15 is pressed, the tuning data is updated in a direction in which the tuning frequency increases, and when the down button 16 is pressed, the tuning data is updated in a direction in which the tuning frequency is decreased. At this time, the area 20 of the liquid crystal display board 10
The band of the receiving channel corresponding to the updated channel selection data is displayed, and the area 21 displays a bar based on the updated channel selection data. When the television signal of the desired broadcast station is selected, the forward button 17 is pressed.

When the send button 17 is pressed, the selection data of the reception channel at that time is stored in the area of the nonvolatile memory 7 corresponding to a predetermined position, and the display form of the liquid crystal display board 10 shown in FIG. As shown in Figure D. In the case of the display example shown in FIG. 3D, when the feed button 17 is pressed while the frequency is tuned to a relatively low frequency in the UHF band, the display in the area 23 of the liquid crystal display panel 10 blinks.

Here, when the up button 15 is pressed, the channel number is incremented in the increasing direction, and when the down button 16 is pressed, the channel number is incremented in the decreasing direction. At this time, the area of the liquid crystal display board 23 contains, for example, 1 to 99
numbers are displayed in sequence, a desired channel number is selected, and the forward button 17 is pressed.

When the send button 17 is pressed, the channel number at that time is stored in the non-volatile memory 7 in a form corresponding to the channel selection data, and it is determined that a series of channel preset procedures have been completed, and the channel preset mode is entered. is released and the mode returns to normal mode.

In addition, in channel preset mode,
If the CLEAR/SKIP button 18 is pressed,
The position at that time is registered as a target for skip processing, and "--" is displayed in area 23 of the liquid crystal display board 10.
is displayed. A position registered as a target for skip processing becomes a skip channel when channels are sequentially selected in the normal mode.

Similarly, for other adjustment modes, UP button 15 and DOWN button 1 are pressed for each step.
6, the adjustment is made by sequentially moving through the steps with the feed button 17.

Incidentally, in one embodiment of this invention, the display section 8
Although a structure using a liquid crystal display board as a display means has been described, a structure using a display means such as a light emitting diode or a display tube may also be used.

In addition, in one embodiment of this invention, a configuration was described in which four buttons 11 to 14 were provided for selecting the adjustment mode, but one switch was used to change the mode each time it was pressed, and the setting The display may be made to correspond to the selected mode.

[Effect of idea]

In this invention, the up button and down button, which are used for sequential tuning in the normal mode, are also used in each adjustment mode, and the up button and down button perform adjustment operations for each step of the mode, and the forward button sequentially selects a predetermined step. will be moved to Further, a display signal is formed in the microcomputer in a form corresponding to each step of the mode, and is displayed in a form that is easily visually confirmed on a commonly used display means.

Therefore, according to this invention, the up button, down button, and forward button are used in various modes, so the number of operation buttons that were conventionally required can be reduced, and the VTR to which this invention is applied
This is also advantageous in reducing the size and weight of television receivers and the like. In addition, according to this invention, the number of buttons is reduced, the operating members are simplified, the operating procedures are common, and the display corresponding to each step of the mode is displayed in a form that is easy to visually confirm. This improves operability and prevents erroneous operations.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of this invention, Fig. 2 is a schematic diagram showing the appearance of the display section and operation section in an embodiment of this invention, and Fig. 3 is an operation of an embodiment of this invention. 4 is a schematic diagram used for explaining a conventional adjustment operating device. Explanation of main symbols in the drawings, 6...Microcomputer, 7...Nonvolatile memory, 8...
Display section, 9... Operation section, 10... Liquid crystal display board, 1
1 to 14... Buttons for selecting adjustment mode, 15...
...Up button, 16...Down button, 17...
...Forward button.

Claims (1)

[Claims for Utility Model Registration] An adjustment operation device for setting an adjustment mode, which includes a selection means for selecting a desired adjustment mode from among a plurality of adjustment modes, and an adjustment operation device operated in the normal mode and the selected adjustment mode. button, down button, forward button, a display section that displays the time in the normal mode and can be changed to an adjustment display in the above adjustment mode, and the above button group and display section that are used in common in the normal mode and multiple adjustment modes. An adjustment operation device characterized by: