JPS60257672A - Controller - Google Patents

Abstract

PURPOSE:To attain the adjustment by means of a remote controlled transmitter by using a remote control signal to adjust a digital signal processing circuit and storing the resulting data to an initial value storage element. CONSTITUTION:When a changeover circuit 22-a is thrown to the X position, the controller is in the normal state and remote control signals A-L are fed to a channel selection control circuit 24 to drive a channel selection circuit 6. When the changeover circuit 22-a is thrown to the Y position, the controler is in the adjusting state and remote control signals A-Q are fed to control circuits 28- 32. The remote control signal Q is fed to a memory write control circuit 28, the changeover circuit 22-b is thrown to the position Y', a storage element 5 is rewritable and the data adjusted by the remote control signals A-P is written to the storage element 5 as the initial data of a digital signal processing circuit 9.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention provides a method for changing control data of a signal processing circuit using a remote control signal and storing the changed data in a storage element. This relates to a control device.

Conventional configurations and their problems In recent years, the use of microcomputers and the development of digital processing circuits have been progressing in television receivers. When signal processing is performed digitally, it is necessary to store the initial values. Further, since the initial value must be changed by replacing peripheral parts, it becomes necessary to change the initial value by some method.

FIG. 1 shows a typical digital television receiver.゛In Figure 1, 1 is a control microcomputer, 2
1 is an operation key, 3 is a remote control transmitter, 4 is a remote control signal receiving circuit, 5 is a memory element, 6 is a tuning circuit, 7 is a tuner 8 is an intermediate frequency amplification circuit, 9 is a digital signal processing circuit, 1
0 is a color output circuit, 11 is a drive circuit, 12 is a picture tube, 13
1 is an audio output circuit, and 14 is an audio output device. The basic operation of FIG. 1 will be explained below. The control microcomputer 1 determines which operation is being performed based on the signal from the operation key 2 or the remote control transmitter 3, and stores the memory element 6,
Controls the channel selection circuit 6, signal processing circuit 9, etc. Tuning data and data serving as initial values for signal processing are stored in the storage element 5, and read out as appropriate. f, is written. First, when a tuning operation is performed, the tuning circuit 6 operates, drives the tuner 7, and sends the video and audio signals obtained there through the intermediate frequency amplification circuit 8 to the digital signal processing circuit 9. . The digital signal processing circuit 9 converts the input signal from the intermediate frequency amplification circuit 8 into a digital signal, performs video and audio signal processing, performs various controls according to instructions from the control microcomputer 1, and converts the color signal 16 into a digital signal. It is supplied to the color output circuit 10. This color output circuit 10 receives digital data 16 from the control microcomputer 1.
It is possible to adjust the DC level and gain of the color signal. The adjusted signal is applied to the drive circuit 11 to drive the picture tube 12. On the other hand, the audio signal 17 is applied to the audio output circuit 13 and drives the audio output device 14.

In FIG. 1, in the digitized television receiver, as explained in the explanation of the color output circuit 10, adjustment items are mostly performed via digital data, and therefore, in contrast to the conventional analog television receiver. There is a trend towards eliminating parts that can be adjusted externally, such as volumetric controls and trimmer capacitors, as in digital receivers. Therefore, when adjusting such a digital television receiver, a special adjustment jig has conventionally been used as shown in FIG.

FIG. 2 is an example of a method for adjusting a digital television receiver. Blocks with the same numbers as in FIG. 1 are blocks with the same functions, and only the parts necessary for explanation are extracted and illustrated here. In FIG. 2, 18 is an adjustment jig, and 19 is a signal switch for operation and adjustment. The operation of the adjustment device configured as above will be explained.

During normal operation, the signal switch 19 is connected to the X side, and the control line 20 of the storage element 5, the digital signal processing circuit 9, and the control line 21 of the color signal output circuit 10 are connected to the control microcomputer 1. ing. When making adjustments, the control line 2 of the memory element 5 is connected by connecting the signal switch 19 to the Y side.
0, the signal processing circuit 9, and the control line 21 of the color signal output circuit 10 are both connected to the adjustment jig 18.

In this state, the adjustment jig 18 is connected to the signal processing circuit 9.
Digital data is sent to the two-color signal output circuit 10 via the control line 21, and necessary adjustments are made. When the adjustment is completed, the adjustment jig 18 writes the adjusted data into the storage element 5 via the control line 20. Adjustment is performed in this way.

In the above configuration, a special adjustment jig is required when making adjustments, and even simple readjustment when parts are replaced in the market requires considerable effort such as switching the control line and preparing an adjustment jig. This is a problem.

In addition, since the memory element is always in a memorizable state,
There is a risk that the memory contents may be erased, distorted, or changed due to external noise or the like.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems.Main adjustments can be made using remote control signals provided in a television receiver without a special adjustment jig, and moreover, only during adjustment, the memory element can be adjusted. It is an object of the present invention to provide a control device that can protect a storage element by changing its contents.

Composition of the Invention A control device according to the present invention includes a digital signal processing circuit, a storage element for storing its initial value, a control circuit for controlling them, and a circuit for transmitting and receiving a remote control signal, The above-mentioned digital signal processing circuit is adjusted by the above-mentioned digital signal processing circuit, and the resulting data is stored in the above-mentioned storage element, and the adjustment can be performed using a remote control transmitter.
No special jig is required, making it extremely practical.

It also has the function of protecting the contents of the memory element by allowing the memory element to store data only during adjustment.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 3 shows a control device in one embodiment of the present invention. In the figure, parts given the same numbers as in FIG. 1 have the same functions. 22-a, 22-
b is the normal state α.

This is a circuit that switches between the adjustment state (X' side) and the adjustment state (Y, Y' side), and in 22-a and 22-b,
are switched synchronously. The normal state generally refers to the state in which a television receiver is viewed, and the switching circuit 22-a is on the X side,
2-b is on the X' side, and the memory element 5 is in a non-rewritable state. An example of the configuration of the remote control transmitter 3 at that time is shown in FIG.

The alphanumeric characters A-Q in the box of FIG. 4 represent the types of codes for the remote control and are added for explanation purposes.

As an example of the function of the codes A to Q on the remote control, in the normal state, A and L are used as channel selection keys, and when these keys are operated, the channel selection circuit 6 can be controlled to receive the desired channel. . It's a moat. M, N are the keys to control the volume of the sound, 0. P is a key for controlling the size of the color, and Q is a key for controlling the power supply. When these keys are operated, the digital signal circuit 9 is controlled to perform the above processing. Next, the case where the switching circuits 22-a and 22-b are in the adjusted state in FIG. 3 will be explained using FIG. 6.

Here, FIG. 5 shows a specific circuit of this embodiment.

In FIG. 5, the same numbers as in FIG. 3 have the same functions. 22-a and 22-b are switching circuits for normal state and adjustment state; 23 is a circuit for determining the remote controller Fs number based on the function of the control microcomputer 1;
4 is a circuit that receives remote control signals (tuning data) A-L and controls the channel selection circuit 6; 26 is a circuit that receives remote control signals M and N and controls sound level data; 26 is a circuit that receives remote control signal O2P; A circuit 27 receives the remote control signal Q and controls the opening/closing of the power supply. Further, 28 is a circuit that receives the remote control signal Q and controls data writing to the memory 5, 29 is a circuit that receives the remote control signal A-F and controls the cutoff data of the color output circuit 1o, and 30 is a circuit that receives the remote control signal G-F. 31 is a circuit that receives remote control signals M and N and controls vertical amplitude data; 32 receives remote control signals o and P and controls horizontal position data; This is a circuit that does this. Here, the remote control signals A-Q indicated by alphabets correspond to the codes shown as an example of the remote control transmitter in FIG. Also, the size of the sound, the size of the color, and the vertical amplitude.

Control of the horizontal position and the like is performed by sending control data from the control microcomputer 1 to the digital signal processing circuit 9.

Next, the operation will be explained with reference to FIG. The operation command sent from the remote control transmitter 3 is applied to the remote control signal discrimination circuit 23 via the remote control receiver 4. The remote control signal determination circuit 23 determines what the remote control signals A-Q are and sends the signals to control circuits corresponding to each operation. Now, when the switching circuit 22-a is connected to the X side, it is in the normal state, and the remote control signals A-L are
is added to drive the channel selection circuit 6. The remote control signals M and N are applied to the sound level control circuit 25, and the sound level is controlled in the digital signal processing circuit 9. The remote control signal O2P is applied to the color size control circuit 26, and the color size is controlled in the digital signal processing circuit 9. The remote control signal Q is applied to the power supply control circuit 27 to control the power supply. The above is the operation when normally watching a television receiver, and the memory element 5 is connected to the switching circuit 2.
It is switched to the X' side by 2-b, and is in a non-rewritable state.

Next, when the switching circuit 22-a is connected to the Y side, it is in the adjustment state, and the remote control signals A-Q are transmitted to the control circuit 28.2.
It will be added to 9, 30, 31, and 32.

In the same remote control signal A-Q as in the normal state, the signal A-
F is added to the cutoff data control circuit 29 to adjust the cutoff of the color output circuit 10.

It's a moat, remote control signal GL is drive data control circuit 3
o to adjust the drive amount of the color output circuit 10. The remote control signals M and N are applied to the vertical amplitude control circuit 31, and the vertical amplitude is adjusted in the signal processing circuit 9. The remote control signals ○ and P are applied to the horizontal position control circuit 32,
The horizontal amplitude is adjusted in the signal processing circuit 9. The remote control signal Q is applied to the memory write control circuit 28, the switching circuit 22-b is switched to Y', and the memory element 5 is made rewritable, so that the data adjusted by the remote control signals A-P are signal-processed. It is written into the memory element 5 as initial data of the circuit 9.

The operation of the remote control signal in the adjustment state shown in FIG. 6 is shown in FIG.

The color output circuit 10 requires control of three colors: red, green, and blue. For each color, control is performed using the cutoff data dog/minor adjustment keys A-F and the drive data dog/minor adjustment keys C1-L. Make adjustments. Adjustments can be made using the vertical amplitude small adjustment keys M and N, and the horizontal position left and right adjustment keys O and P. Data can also be written to the memory element 5 using the key Q.

In this way, by using the control device in this embodiment, the switching circuit 22-a can be controlled using the same remote control signal.
, 22-b is switched to the normal state, it has the same function as when operating a normal television receiver as shown in FIG. 4, and when it is switched to the adjusted state, it has the same function as shown in FIG. 6. As shown in FIG. 2, the main adjustment functions of the television receiver can be provided, and the adjusted data can be stored in the storage element 5. Further, since this example uses a remote control signal, adjustment can be achieved without preparing any special jig or wiring.

Effects of the Invention As described above, according to the present invention, using a remote control signal,
In the normal state, the digital processing circuit is controlled in accordance with the operation, and in the adjustment state, the data of key A, which is the basis of the digital processing circuit, is adjusted and stored as an initial value in the memory element to perform special adjustment treatment. An excellent effect can be obtained in that the digital processing circuit can be adjusted without any equipment. Furthermore, since adjustments can be made using remote control signals, there is no need for additional wiring for adjustments, and there is an advantage that adjustments can be made even from a remote location.

Furthermore, since writing to the memory element is enabled only after it is in the adjusted state, there is no risk that the stored contents will be disturbed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of a television receiver having a digital signal processing circuit, a block diagram showing the configuration of a control device on the male side, and FIG. 4 is a block diagram showing the operation of remote control signals in a normal state in the present invention. FIG. 6 is a block diagram functionally representing a specific example of a control device according to an embodiment of the present invention. FIG. 6 is a front view showing an example of a control device according to an embodiment of the present invention. It is a front view showing an example of a section. 1... Control microcomputer, 2...
...Operation keys, 3...Remote control transmitter, 4...
...Remote control signal receiving circuit, 5 ... Memory element, 6 ... Tuning circuit, 9 ... Digital signal processing circuit, 10 ... Color output circuit, 22-a,
22-b...Switching circuit, 23...Remote control signal discrimination circuit, 24...Tuition selection data control circuit, 26...Sound data control circuit, 26...・・・・・・
Color data control circuit, 27...Power control circuit, 28...-Memory write control circuit, 29...
・Cutoff data control circuit, 30...Dra・
Eve data control circuit, 31... Vertical amplitude control circuit, 32... Horizontal position control circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 J 4 Figure 4 Figure 5 L --J

Claims (2)

[Claims] (1) A signal processing circuit, a storage element that stores control data for the signal processing circuit, and a control circuit that controls them;
A circuit for transmitting and receiving a remote control signal, and a switching circuit for switching the control circuit between a first mode of use and a second mode of use, and a state in which the memory element cannot be rewritten in the first mode of use. , the signal processing circuit is controlled by the remote control signal, and
In the second usage mode, the storage element is switched to a rewritable state, and the control data of the signal processing circuit is changed by the remote control signal 2, and the changed control data is written to the storage element. A control device configured to allow (2) The control device according to claim 1, wherein the signal processing circuit is a digitized signal processing circuit, and the initial value of the control data is stored in a storage element.