KR890001905B1 - Control unit inclunding a circuit for controlling and setting control data for a digital processing circuit - Google Patents

Abstract

The unit has a memory for storing data for a signal processing circuit. A circuit transmits and receives remote control signals. A switching circuit sets the central circuit in one of two modes. The processing circuit is controlled by remote control signal in the first mode. The control data for the processing circuit is adjusted by the remote control signal and the adjusted data written into the memory in the second mode. The processing circuit is a digital circuit and an initial value for this circuit is stored in the memory. The memory is set in a write disable state in the first mode and in a write enable state in the second mode.

Description

Controller

1 is a block diagram showing the basic configuration of a television receiver having a digital signal processing circuit.

2 is a block diagram of a main portion showing a conventional example of a digital signal processing circuit adjusting apparatus.

3 is a block diagram showing the configuration of a control device according to an embodiment of the present invention.

4 is a front view showing an example of an operation unit of a remote control signal transmitter in a normal state in the present invention.

5 is a block diagram functionally showing a specific example of the control apparatus in one embodiment of the present invention.

6 is a front view showing an example of the remote control signal transmitter operation unit in the adjusted state in the present invention.

Fig. 7 is a block diagram showing the configuration of a control device in another embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

1: control microcomputer 2: operation key

3: remote control transmitter 4: remote control signal receiving circuit

5 memory device 6 tuning circuit

9: digital signal processing circuit 10: color signal output circuit

22: switching circuit 23: remote control signal discrimination circuit

24: Tuning data control circuit 25: Voice data control circuit

26: color data control circuit 27: power supply control circuit

28: memory write control circuit 29: cutoff control circuit

30: drive data control circuit 31: vertical amplitude control circuit

32: horizontal position control circuit

The present invention relates to a control apparatus having a circuit for transmitting and receiving a remote control signal and which can be used for a color television receiver capable of controlling a signal processing circuit and a tuning circuit by the remote control signal.

In recent years, a color television receiver has been developed that employs a microcomputer, a digital signal processing circuit, or the like to process or control a television signal by digital data. When signal processing is performed in the form of a digital signal in this manner, it is necessary to store the initial data. Based on the initial data, it detects a signal required by a color television receiver in normal operation, compares the signal with the initial data with a control microcomputer, and controls the color television receiver to always operate correctly. For that. One example is automatic white balance adjustment. The automatic white balance adjusting means includes a low voltage power supply and a high voltage power supply for each color of red, green, and blue, and inputs the color signal output circuit of the color television receiver that has completed all adjustments including white balance from the low, high voltage source. Each reference primary voltage is applied, and each beam current at this time is detected as a voltage, converted into a digital signal, and stored in the storage element as initial reference data. This is done for each of red, blue and green. In the normal operation of the color television receiver, the low voltage and the high voltage of the respective colors are input to the color signal output circuit during the blanking period, and the beam current of any one primary color at this time is compared with the initial reference data. The method of calculating and detecting the deviation of the white balance by calculation, and adjusting the DC level and the gain of a color signal so that the beam current of different primary colors correspond to the ratio of three primary colors previously stored according to the degree of this deviation are proposed. The present invention relates to means for adjusting the reference data at this time.

On the other hand, in the color television receiver using the easy signal processing circuit in this way, a failure occurs in the completed color television receiver, so that it is necessary to replace the peripheral parts to change the initial data. On the other hand, conventionally, necessary adjustment was performed using the jig of adjustment yaw.

First, a configuration of a general digitalized color television receiver is described with reference to FIG.

In Fig. 1, reference numeral 1 denotes a control microcomputer, 2 denotes an operation key composed of a plurality of keys for controlling on / off of power, tuning, volume, etc., and 3 denotes a remote control transmitter. (4) is a receiving circuit for receiving a remote control signal from the remote control transmitter (3), (5) is a memory element, (6) is a tuning circuit, (7) is a tuner, and (8) is an intermediate frequency amplifier. Circuit (9) is a digital signal processing circuit, (10) a color output circuit, (11) a drive circuit, (12) a sound line tube, (13) a voice output circuit, and (14) a voice output device. .

The basic operation of FIG. 1 will be described below. The control microcomputer 1 determines which operation is made based on the signal from the operation key 2 or the remote control transmitter 3, and the memory device 5, the tuning circuit 6, and the digital signal processing circuit 9 Control). Here, the channel selection data and the data serving as initial values of the signal processing are stored in the storage element 5, and are read and recorded by the enemy. As this memory element 5, a nonvolatile memory such as an M NOS memory, a FA MOS memory, or the like can be used, and a volatile memory backed up by a battery may be used.

For example, when the tuning operation is performed by the operation key 2 or the remote control transmitter 3, the control microcomputer 1 and the tuning circuit 6 operate, and the tuning data is stored in the storage element 5. The readout is applied to the tuner 7 according to the tuning data. The television signal selected by the tuner 7 is an audio intermediate frequency amplifier circuit. The video signal and the audio signal are passed through the detection circuit 8 and applied to the digital signal processing circuit 9. The digital signal processing circuit 9 first converts the signal from the intermediate frequency amplifier circuit / detection circuit 8 into a digital signal by an analog-digital converter (not shown) to perform video and audio signal processing. Then, various kinds of control are performed by the instruction from the control microcomputer 1, and thereafter, the digital-analog converter (not shown) is converted into an analog signal, and the color signal is output through the color signal output circuit (line 16). To 10). The color signal output circuit 10 can adjust the DC level and the gain of the color signal by digital data supplied from the control microcomputer 1 via the line 15. Although not shown, the digital data is converted into analytical data by a digital-analog converter and applied to the color signal output circuit 10. The color signal adjusted by this color signal output circuit 10 is applied to the drive circuit 11 to drive the water pipe 12. On the other hand, the voice signal is applied to the voice output circuit 13 through the line 17 and drives the voice output device 14.

like this. In the digitalized television receiver, as described in the operation of the color signal output circuit 10, various adjustments are almost performed using digital data from the control microphone computer 1, so that a conventional analog television receiver Likewise, externally adjustable components such as volume and trimmer capacitors tend to disappear.

Therefore, when adjusting such a digital television receiver, a special adjustment jig was conventionally used as shown in FIG. 2 shows an example of an adjustment method of a conventional digital television receiver. The same numbers as in FIG. 1 are blocks of the same function, and only the parts necessary for explanation are shown here. In Fig. 2, reference numeral 18 denotes an adjustment jig, and 19 denotes a signal switch during normal operation and during adjustment. The operation of the adjusting device configured as described above will be described.

In normal operation, the signal switch 19 is connected to the terminal (X) axis, and the control of the control line 20, the digital signal processing circuit 9 and the color signal output circuit 10 of the memory element 5 is controlled. The line 21 is connected to the control microcomputer 1. When making adjustments, connect the signal switch 19 to the terminal (Y) axis. As a result, 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 adjustment jig 18 together. In this adjustment state, the adjustment jig 18 sends digital data to the digital signal processing circuit 9 and the color signal output circuit 10 via the control line 21 and makes necessary adjustments. When the adjustment is completed, the adjustment jig 18 writes the adjusted digital data to the storage element 5 via the control line 20. In this way, adjustment is made.

In the above configuration, there is a problem that a special adjustment jig is required at the time of adjustment, and even a simple re-adjustment in the case of replacing parts in the market takes one hand, such as switching the control line and preparing the adjustment jig.

An object of the present invention is to provide a control device capable of making major adjustments by remote control signals of a remote control signal transmitter provided in a television receiver without a special adjustment jig. .

A second object of the present invention is to protect the memory contents of the memory element by changing the contents of the memory element only during adjustment.

The control apparatus according to the present invention includes a signal processing circuit, a storage element capable of storing control data of the signal processing circuit, a control circuit for controlling the signal processing circuit and the memory element, and a remote control signal for transmitting and receiving. In the first and second usage forms of the circuit and the control circuit, the control data of the signal processing circuit is adjusted by the same remote control signal, and the control data after the adjustment is recorded in the storage element. Since the adjustment is performed using the remote control signal, it is not necessary to use the adjustment jig again, and the signal processing circuit can be easily adjusted.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 3 shows a control device in one embodiment of the present invention. In the figure, a control microcomputer 1, an operation key 2, a remote control transmitter 3, a remote control signal receiving circuit 4, a memory element 5, a tuning circuit 6, a tuner 7 ), The intermediate frequency amplifier / detection circuit (8), the digital signal processing circuit (9), the color signal output circuit, the driving circuit (11), the cathode ray (12), the audio output circuit (13), and the audio output device (14). Since they have the same functions as those in Fig. 1, they are given the same numbers. Here, reference numeral 22 denotes a switching circuit for switching between the normal operation state and the adjustment state.

Here, the normal operation state generally refers to a state of watching a television receiver, and an example of the operation surface configuration of the remote control transmitter 3 at this time is shown in FIG.

Letters (A) to (Q) in each rectangular frame (indicative of a key) in FIG. 4 indicate the type of code of a remote control signal, and are attached for ease of explanation.

As an example of the functions (A) to (Q) of the remote control signal, in the normal operation state, (A) to (L) is used as the tuning key. These tuning keys operate (A) to (L), and control the tuning circuit 6 to receive a desired channel. (M) (N) is a key for manipulating the magnitude of the volume, (O) (P) is a key for controlling the color density (darkness and lightness), and (Q) is a key for controlling the power on / off. to be. When the keys of these (M) to (P) (Q) are operated, the digital signal processing circuit 9 and the power supply circuit 40 are controlled through the control microcomputer 1 to perform the above-described processing.

Next, the operation of the normal operation state and the adjustment state will be described in more detail with reference to FIG. FIG. 5 is a diagram functionally blocking the main components of FIG. In FIG. 5, when the switching circuit 22 is connected to the terminal X side, it is a normal operation state, and when the switching circuit 22 is connected to the terminal Y side, it becomes an adjustment state. In this adjustment state, the remote control signal from the remote control transmitter 3 enables adjustment of the cutoff level of the cathode ray 12 and the driving amount of the color signal, the vertical amplitude of the image, and the horizontal amplitude.

In Fig. 5, reference numeral 23 denotes a function of the control microcomputer 1, and the discriminating means 24 for discriminating the remote control signal receives the tuning data A to L among the remote control signals. 6) means for controlling, 25 means for receiving a remote control signal (M) (N), and means for controlling data of large and small volume, 26 for receiving a remote control signal (O) (P) Means for controlling the rich / damping data, 27 means for receiving the remote control signal Q, for controlling the data recording to the storage element 5, 29 for the remote control signals A to F. Means for controlling cutoff data of the color signal output circuit 10, 30 means for receiving remote control signals G to L and controlling drive data of the color signal output circuit 10, 31. Denotes a means for controlling the data of the vertical amplitude by receiving the remote control signal M (N), and 32 denotes a means for receiving the remote control signal O (P) and controlling the data of the horizontal position.

Here, the remote control signals A to Q displayed in alphabetical letters correspond to the codes indicated as an example of the remote control transmitter in FIG. In addition, control of the volume level, color tone, vertical amplitude, 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 in FIG. 5 will be described. The operation name type (pulse code signal) sent from the remote control transmitter 3 is applied to the remote control signal discrimination means 23 via the remote control signal receiver 4. The remote control signal discriminating means 23 determines what the remote control signals A to Q are and sends a signal to the control means corresponding to each operation. Now, when the switching circuit 22 is connected to the terminal (X) axis, it is in a normal operation state, and the remote control signals (A) to (L) are applied to the tuning data control means 24 to supply the tuning circuit 6. Drive. In addition, the remote control signal M (N) is applied to the control means 25 of the volume magnitude, and the magnitude of the volume is controlled by the digital signal processing circuit 9. The remote control signal O (P) is applied to the color shade control means 26, and the color tone is controlled by the digital signal processing circuit 9. The remote control signal Q is applied to the power supply opening and closing control means 27 to control the opening and closing of the power supply circuit 40. The above is the operation when watching a conventional television receiver.

Next, when the switching circuit 22 is connected to the terminal Y side, it is in an adjustment state, and the remote control signals A to Q are controlled by the control means 28, 29, 30, 31 and 32. Will be added to.

In the remote control signals A to Q as in the normal operation state, the signals A to F are applied to the cutoff data control means 29 to adjust the cutoff of the color signal output circuit 10. Further, the remote control signals G to L are applied to the drive data control means 30 to adjust the amount of drive (DC level and gain) of the color signal output circuit 10. The remote control signal M (N) is applied to the vertical amplitude control means 31 to adjust the vertical amplitude in the digital signal processing circuit 9. The remote control signal O (P) is applied to the horizontal position control means 32 to adjust the horizontal amplitude in the digital signal processing circuit 9. The remote control signal Q is applied to the memory write control means 28 so that each data adjusted by the remote control signals A to P is used as initial data of the digital signal processing circuit 9 as a storage element 5. ).

The operation surface of the remote control signal transmitter 3 in the adjustment state is displayed as shown in FIG. In the color signal output circuit 10, control of three colors of red, green, and blue is required, and the large / small adjustment keys (A) to (F) of the blocking data and the large / small adjustment keys of the driving data are different for each color. The adjustment is performed using (G) to (L). In addition, the vertical amplitude large and small adjustment keys (M) (N) and the horizontal position

Each adjustment can be performed by the right adjustment key O (P). In addition, each data can be written to the memory device 5 by the key Q. As shown in FIG. In addition, the said adjustment amount can be controlled by the time to hold down a key. By using such a control device, when the switching circuit 22 is switched to the normal operation state by using the same remote control signal, it has the same function as operating a normal television receiver as shown in FIG. When it is switched to the adjustment state, it is possible to provide the main adjustment function of the television receiver and to store the adjusted data in the storage element 5. In addition, since this apparatus uses a remote control signal for adjustment, it can be realized without preparing a special jig for adjustment and without any wiring, which is extremely convenient in practical use. In addition, if a panel having a hole corresponding to each letter and key as shown in FIG. 6 is formed separately, the panel is placed on the operation surface of the remote control transmitter 3 in an adjusted state, and the adjustment operation is easily performed. do.

7 shows another embodiment of the present invention. In the configuration of FIG. 3, since the memory element 5 is always in a memorable state, there is a concern that the memory contents of the memory element 5 may be erased or changed when extraneous noise occurs. The control device shown in FIG. 7 solves this problem. This device is characterized in that the memory device 5 is protected so that the memory device 5 can be written only when the digital signal processing circuit 9 is adjusted.

7 will be described below. 7 shows only the main components of the apparatus, and the same numbers as those in FIG. 3 have the same functions. Here, (22A) and 22B are switching circuits for switching between the normal operation state and the adjustment state, and are synchronously switched. When the switching circuits 22A and 22B are connected to the terminal X side, a normal operation state is established, and the memory element 5 becomes impossible to write in this state.

Operation in this normal operation state is the same as that in FIG. 3, and the operation keys 2 or the remote control transmitter 3 enable adjustment of the volume, adjustment of the color tone, and further tuning operation.

On the other hand, in the adjustment state, the switching circuits 22A and 22B are also switched to the terminal Y side. In this state, the memory device 5 becomes a recordable state.

Here, by using the remote control transmitter 3, various adjustments are possible as in the case of FIG. 3, and each adjusted data can be recorded in the storage element 5.

Thus, in the configuration shown in Fig. 7, the remote control signal of the remote control transmitter makes it possible to perform various adjustments of the color television receiver, and to allow the recording to the storage element 5 in the adjusted state. In other states, there is no fear that the stored contents of the memory element 5 will be disturbed due to extraneous noise or the like, so that accurate operation is always obtained.

In the above embodiment, the case where the signal processing circuit 9 is a digital signal processing circuit has been described, but the present invention is applicable to a color television receiver having a processing circuit for processing an analog video signal. In this case, since it is an analog signal processing circuit and an initial value is set by a volume and a trimmer capacitor, it is not necessary to record this initial value in the memory element 5. After that, when adjustment is necessary, the switching circuit 22 is used to adjust the control data of the analog signal processing circuit and the color signal output circuit by the remote control signal, and at the same time, the adjustment and the changed control. Data is written to the memory device 5. Although digital control data is not shown at this time, the digital control data is converted into analog data by a digital-analog converter and applied to the analog signal processing circuit and the color signal output circuit. The operation in the normal operation state is the same as that in the case of FIG.

Claims (3)

A signal processing circuit, a storage element capable of storing control data of the signal processing circuit, a control circuit for controlling the signal processing circuit and the memory element, a circuit for transmitting and receiving a remote control signal, and the control circuit. A switching circuit for switching between the first use form and the second use form; in the first use form, the signal processing circuit is controlled by the remote control signal; and in the second use form, the same remote control is provided. The control device is configured to adjust the control data of the signal processing circuit according to the signal and to record the control data after the adjustment in the storage element. The control apparatus according to claim 1, wherein the signal processing circuit is a digital signal processing circuit, and an initial value of the signal processing circuit is stored in a memory element. 2. The control apparatus according to claim 1, wherein the memory device is set to a non-writable state in the first use form, and the memory device is set to a recordable state in the second use form.

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