JPS6196836A - Electronic device - Google Patents

Abstract

PURPOSE:To improve the ease of use and to prevent mis-operation by applying a discriminating signal to a main body to bring the main body to the adjustment mode in connecting an adjustment commander to the main body via a cord and also applying an adjustment control signal. CONSTITUTION:The adjustment commander 26 is connected to the main body via a cord 31 and connectors 32, 33. A microcomputer 20 discriminates it as the adjustment mode when a signal from the terminal SR of a jack 33 is at a common level so as to set an adjustment mode flag thereby setting each circuit section based on the initial setting data to each circuit section. When a control signal from a microcomputer 26B is inputted, the setting data at each set is adjusted and written in the memory 23. Then the adjustment mode flag is reset by depressing the adjustment end key of the commander 26.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is based on, for example, a television receiver that performs most of the signal processing digitally. It is configured as shown in .

In the figure, (1) is a tuner circuit that includes everything from a tuner to a video detection circuit;
), a composite video signal SV is obtained. This video signal S
After V is converted into a digital signal by an A/D converter (2), it is passed through a comb filter (3) to a peaking filter (
4) to obtain a digital luminance signal Yo. This luminance signal Yo is supplied to a signal processing circuit (5Y),
After processing such as contrast, D/A converter (6Y)
It is converted into an analog luminance signal Y by the matrix circuit (
7).

Further, the output of the comb filter (3) is supplied to a bandpass filter (8) to obtain a digital carrier color signal CO. This carrier color signal Go is supplied to a signal processing circuit <5Cn, and iJ!, ACC1 hue, color saturation, etc. After Ig adjustment, the signal is supplied to a color demodulation circuit (9), and a digital red difference signal RD-YD and blue difference signal BD-YD are obtained.

These color difference signals RD-yD, BD-YO are converted into analog color difference signals RY and B-Y by D/A converters (6R) and (6B), respectively, and then sent to the matrix circuit (7).
supplied to

The three primary color signals R of red, green, and blue are output from the matrix circuit (7).
, G, and B are obtained, and adders (IOR) and (IOC) are obtained, respectively.
, (IOB) to white balance and brightness adjustment amplifiers (IIR), (IIG>, (IIB), and these amplifiers (IIR), (IIG"
), (IIB > outputs are respectively driven by drive amplifiers (
12R), (12G), and (12B) to the color picture tube (13).

Further, the composite video signal SV from the tuner circuit (1) is supplied to a synchronization separation circuit (14) to obtain a synchronization pulse,
This synchronization pulse is supplied to a pulse processing circuit (15H) to form a horizontal synchronization pulse P having a predetermined pulse width and phase, and is supplied to a horizontal output circuit (16H). Then, from this horizontal output circuit (16H), the horizontal deflection coil (17
H) is supplied with a horizontal deflection signal. Further, the synchronization pulse obtained from the synchronization separation circuit (14) is supplied to the integration circuit (18) to obtain a vertical synchronization pulse, and this pulse is supplied to the pulse processing circuit (15V) to obtain a vertical synchronization pulse of a predetermined pulse width and phase. Synchronous pulse PV and vertical output circuit (16V
). And this vertical output circuit (16V
) supplies a vertical deflection signal to the vertical deflection coil (17V).

Further, (19) is a microcomputer for channel selection, and (20) is a microcomputer for control.

The microcontroller (19) has a rewritable nonvolatile memory (21
) is connected to the microcontroller (20), and the microcontroller (20) is also connected to the bus (2
A rewritable non-volatile memory (23) is connected to the microcomputer (19) via a key panel (24). This key panel (24) is provided with a plurality of keys for the user to select a channel or adjust contrast, brightness, hue, color saturation, etc. In addition, the memory (21) stores preset channel selection data corresponding to the numeric keypad on the panel (24) and user-adjusted data such as contrast, brightness, hue, and color saturation even when the power is turned off. It is for keeping. However, the data such as contrast, brightness, hue, and color saturation are offset values with respect to the standard value (center value), and the standard value is stored in the memory (23). Further, the memory (23) stores data such as white balance, horizontal deflection, vertical deflection, etc., which do not require adjustment by the user but require adjustment by the manufacturer'. The data stored in this memory (23) is stored in the microcomputer (20) at the terminal (2), for example, at the time of shipment.
An adjustment commander (26) is connected via the
Adjustments are made using this.

In the above configuration, when the power is turned on, the microcontroller (19
) reads out the tuning data of the channel that was being tuned before the power was turned off from the memory (21), and this data is supplied to the tuner circuit (1) so that the tuning data of the channel that was being tuned before the power was turned off is read out from the memory (21). The selected channel will be selected. In addition, the data of the brightness offset value is read from the memory (21) by the microcomputer (19), and is supplied to the microcomputer (2o) via the interface (29). Brightness and white balance data is read out from the controller, and these data are supplied to the amplifier control circuit (11) via the bus (22) and interface (27).
), the amplifiers (IIR) to (IIB > are controlled by
The three primary color signals R'-B are adjusted so that the brightness and white balance are as set. Also, microcomputer (20)
The deflection data is read out from the memory (23) and supplied to the pulse processing circuit (15+1) (15V) via the bus (22) and interface (28) to ensure that the horizontal and vertical deflection waveforms are as set. It is connected 6 times so that Also, the memory (23) is controlled by the microcomputer (19).
), offset value data such as contrast, hue, and color saturation are read out from the interface (29).
The contrast is supplied to the microcomputer (20) via the microcomputer (20), and the contrast is
Standard value data such as hue and color saturation is read out,
Then, these offset value data and standard value data are added, and this added data is supplied to the signal processing circuits (5Y) and (5C) via the interface (27) to determine the contrast, hue, and color. Signals YD and Co are adjusted so that the saturation level and the like are as set.

Therefore, the color picture tube (13) displays the same channel that was selected when the power was turned off.

Note that the data set in the interfaces (27) and (28) are latched in registers (not shown) provided in the interfaces (27) and (28) until new data is supplied next time. ing.

Next, when the user operates, for example, a numeric keypad on the key panel (24), the microcomputer (19) reads out the channel selection data preset for the operated key from the memory (21). , this data is supplied to the tuner circuit (11) and the key panel (24).
) will select the channel specified by the numeric keypad. The tuning data of the channel selected at this time is written into the memory (21), and is prepared when the power is turned off.

Furthermore, when a hue key, for example, on the key panel (24) is operated, the hue offset value data in the memory (21) is updated each time the key is operated, and the data is transferred to the interface (29). is supplied to the microcomputer (20) via the interface (27), and added to the standard value data from the memory (23), and this added data is supplied to the signal processing circuit (5C) via the interface (27) to determine the hue. Adjustments were made to the name.

Further, in FIG. 3, (30) is a display circuit, which is a circuit for displaying the selected channel on the screen of the color picture tube (13) when selecting a channel, and displaying the volume when adjusting the audio. It is. The display circuit (30) is supplied with display data, ie, channel data, volume data, etc., from the microcomputer (19) via the microcomputer (20). Then, from this display circuit (30), red,
Three primary color signals R1+Gl and BE of green and blue are obtained and supplied to adders (IOR), (IOC) and (IOB), respectively, and are superimposed on the image on both sides of the color picture tube (13) to display the channel and volume. etc. will be displayed.

In FIG. 3, the portion surrounded by a dashed line is actually formed by one IC.

[Problem that the invention seeks to solve]

In the television receiver shown in FIG. 3, for example, an adjustment commander (26) is installed in the microcomputer (20) at the time of shipment.
) are connected and the setting data of each part of the circuit is adjusted. In this case, when connecting the commander (26), the TV receiver@! Setting the machine to adjustment mode, for example, by operating a switch, is troublesome for the adjuster and may lead to erroneous operation.

Therefore, in the present invention, the usability of the adjuster is improved,
This also makes it possible to prevent erroneous plagiarism.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention has an adjustment commander (26) that adjusts the setting data of each circuit part of the main body (for example, a television receiver) connected to the main body via a cord (31). The main body is supplied with a discrimination signal for setting the main body in an adjustment mode, and is also supplied with a control signal for adjustment.

[Effect]

In the above configuration, when the gI adjustment commander (26) is connected, the main body is automatically put into adjustment mode, for example, based on the discrimination signal.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to FIG. In FIG. 1, parts corresponding to those in FIG. 3 are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

In the figure, (26) is a commander for adjustment, which is composed of a key panel (26^) and a microcomputer (26B) for generating control signals. In this case, by operating a predetermined key on the key panel (26A), the microcomputer (26B) outputs a control signal corresponding to the operated key as serial data.

The power terminal and ground terminal of the microcomputer (26B) are connected to conductors a (31B) and <31B, which constitute the cord (3I), respectively.
E) to terminals B and E of the connector plug (32). In addition, the control signal output terminal of the microcomputer (26B) is connected to the plug (32) through the conductor (311).
is connected to terminal IR of Further, the terminal SR of the plug (32) is connected to the terminal rim.

Further, (33) is a connector jack to which the plug (32) is connected, and the terminal B of this jack (33) is supplied with a power source B, and the terminal E is grounded.

Further, signals obtained at terminals JR and SR of this jack (33) are respectively supplied to the microcomputer (20).

Terminals B, IR, SR and E of the above-mentioned plug (32) are connected to terminals B, IR, SR and E of this jack (33), respectively.

Further, the microcomputer (20) is made to operate according to the flowchart shown in FIG.

When the power is turned on, it is determined whether the mode is adjustment mode or not.

In this case, when the signal supplied from the terminal SR of the jack (33) is at a low level (ground level), it is determined that the mode is the adjustment mode, and at other times, it is determined that the mode is the user mode used by the user. That is, Jack (33
), when the plug (32) of the commander (26) is connected, the terminal SR of the jack (33) is grounded, so 1
It is judged to be in circumferential mode.

When it is determined that the mode is the adjustment mode, the adjustment mode flag is turned on, and the average initial setting data for each part of the circuit written in advance in a certain category area of the ROM (not shown) of the microcomputer (20) is read out. , each part of the circuit is set based on this. Then, the microcomputer (26B) of the commander (26)
) The control signal generated from the jack (33
), the setting data for each set is adjusted based on this, and the adjusted setting data for each part of the circuit is written into the memory (23).

Then press the adjustment end key of the commander (26), for example rE.
By pressing XITJ, the adjustment mode flag is turned off and the adjustment mode is canceled.

On the other hand, when it comes to user mode, IiJ! from memory (23)! Initial setting data written in the i1M mode is read out, each part of the circuit is set based on this data, and thereafter user mode processing is performed.

This example is configured as described above, and by connecting the plug (32) of the commander (26) to the jack (33),
A determination signal for determining the adjustment mode is supplied to the microcomputer (20) from the terminal SR of the jack (33), and the television receiver is automatically switched to the adjustment mode when the power is turned on. Thereafter, a control signal generated by the microcomputer (26B) of the commander (26) is input via the terminal IR of the jack (33), and the setting data is adjusted.

As shown in this example, simply by connecting the commander (26), the television receiver automatically switches to the 6-circuit mode, which improves usability for the adjuster and prevents erroneous operation. .

Although the above-mentioned embodiments apply the present invention to a television receiver, it can be similarly applied to other electronic devices.

〔Effect of the invention〕

According to the present invention described above, the adjustment commander is connected to the main body via a cord, and when connected, the main body is supplied with a discrimination signal for determining that the main body is in the adjustment mode, and the main body is automatically put into the adjustment mode. Since it can be switched, the usability for the adjuster is improved and erroneous operations can be prevented.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram for explaining its operation, and FIG. 3 is a block diagram showing an example of a television receiver. (20) is a control microcomputer, (23) is a nonvolatile memory, (26) is an adjustment commander, (31) is a code, (3
2) is a connector plug, and (33) is a connector jack. Figure 2

Claims (1)

[Claims] In an electronic equipment device consisting of an electronic equipment main body and an adjustment commander that adjusts setting data of each circuit part of this main body, the adjustment commander is connected to the main body via a cord, and when this connection is made, the main body has: An electronic equipment device, characterized in that a determination signal for determining that the main body is in an adjustment mode is supplied, and a control signal for the adjustment is also supplied.