JPH02250576A - Data store system for tv system - Google Patents

Abstract

PURPOSE:To prevent an accident due to the destruction of a memory by transferring data stored in a memory of a video equipment to a monitor memory for supplement even though the monitor memory is destroyed by the discharge of a CRT, etc. CONSTITUTION:The memory data on a monitor B and a video equipment A can be checked and transferred, and the data of a memory (b) of the monitor B are stored in a memory (a) of the equipment A. If the monitor B is discharged and the data of the memory (b) of the monitor B are destroyed, the data on the monitor B stored in the memory (a) of the equipment A are transferred to the memory (b) of the monitor B for supplement of the memory data of the monitor B. Thus it is possible to prevent the accidents due to the destruction of a memory.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data storage system for a TV (television) system that retains memory data of a monitor having a CRT (cathode ray tube).

[Summary of the Invention] The present invention provides a monitor having a CRT and a memory, and a monitor having a CRT and a memory. By storing the memory data of the monitor in the memory of the video equipment, even if the memory of the monitor is destroyed due to discharge of Cl '1', the data can be stored in the memory of the video equipment. Data stored in the monitor can be transferred to the monitor's memory for compensation, thereby preventing accidents caused by memory corruption.

[Prior Art] As shown in FIG.
Monitor B with I and video signal line e to this monitor B
and a tuner A of video equipment that sends out video signals via the video equipment. Tuner A and monitor B each have a signal processing circuit 20.21 and a character generator 22.23 that generates a signal for display on the screen.
is controlled by each CPU 24, 25. Also, tuner A
and monitor B are provided with memories a and b, respectively, and these memories a and b are controlled by respective CPUs 24 and 25.

Memory a of tuner A stores adjustment data and control data of the tuner itself, and memory b of monitor B stores adjustment data (misconvergence amount, etc.) and control data of the monitor itself.

The video signal output from the signal processing circuit 20 of the tuner A is guided to the signal processing circuit 21 of the monitor B via the video signal line e. A video signal that has undergone predetermined signal processing in the signal processing circuit 21 is supplied to the CRT 1 and an image is displayed.

Each CPU 24, 25 has a memory a, b.
Each signal processing circuit 20
．． 21, each character generator 22, 23, etc.

[Problems to be Solved by the Invention] With the above configuration, the monitor B of the CRT 1 type had a drawback that the data in the built-in memory b would be destroyed if discharge occurred or the human body was charged due to human contact. . Nowadays, digital control of TVs has advanced, and if the adjustment data is destroyed, it can lead to serious malfunctions.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a data storage system for a TV system that can compensate for the destroyed data even if memory data is destroyed.

[Means for Solving the Problems] To achieve the above object, the data storage method of the TV system of the present invention includes a CRT, a monitor having a memory for holding data and a control unit for controlling this memory, and a monitor for holding data. and an image II device having a control unit for controlling this memory and having no CRT, and capable of checking and transferring the memory data of the monitor and the memory data of the video equipment, and the memory data of the monitor can be checked and transferred. The data is stored and held in the memory of the video equipment.

[Operation] When a discharge or the like occurs in the monitor and the data in the monitor's memory is destroyed, the monitor data stored in the memory of the video equipment is transferred to the monitor's memory to supplement the monitor's memory data.

[Example code] Embodiments of the present invention will be described below with reference to the drawings.

An embodiment of the invention is shown in FIGS. 1 and 2. FIG.

FIG. 1 shows a circuit block diagram of a television system implementing the memory storage method of the present application. In Fig. 1, the TV system has a tuner A, which is a video device that does not have a CRT, and a monitor B, which has a CRT 1, connected to each other. It will be done. An SHF antenna 2 and a U/V antenna 3 are connected to input terminals ji and j* of tuner A, respectively. Video signals from SHF antenna 2 and U/V antenna 3 are connected to switch SW.
The input video signal is selectively input to tuner A at , and the input video signal is supplied to video signal processing circuit 4 and synchronization signal detection circuit 5, respectively. Video signal processing circuit 4 extracts an image information signal from the input video signal, performs predetermined signal processing on this image information signal, and outputs it to adder 6. The synchronization signal detection circuit 5 detects a synchronization signal from the input video signal, guides the detected synchronization signal to an output terminal t4, and supplies it to the character generator 7. Character generator 7 is c
A screen display signal is generated based on the address signal from the PUS, and this screen display signal is output to the adder 6. The adder 6 adds the tube display signal to the picture information signal, and the picture information signal to which the tube display signal has been added is led to an output terminal. A CPU (central processing unit) 8, which is a control section, controls the video signal processing circuit 4 and the synchronization signal detection circuit 5, and also controls reading and writing of the built-in memory a. The memory a stores adjustment data and control data for the tuner A itself, and also has an extra capacity capable of storing all the data in the memory b of the monitor B.

Monitor B is provided with two input terminals ts and j7, and these input terminals to and ty and each output terminal js of tuner A
, to are connected via an image information signal line O and a synchronization signal line A, respectively. The image information signal input from the input terminal t is subjected to predetermined signal processing in the video signal processing circuit 9 and output to the adder lO. A synchronizing signal input from the input terminal t7 is supplied to the deflection circuit 11 and the character generator 12, respectively. The deflection circuit 11 forms a sawtooth wave based on the synchronization signal. The character generator 12 is similar to that of the tuner A.
A screen display signal is generated based on the address signal from the PU 13, and this screen display signal is output to the adder IO.

Similar to the tuner A, the control unit CPU13 controls the video signal processing circuit 9 and the character generator I2.
It also controls reading and writing of built-in memory b. This memory b stores adjustment data and control data for the monitor 1 itself.

Further, the CPUI of the monitor B and the cpus of the tuner A are provided with terminals ja and t for data transfer, respectively, and these terminals ts and je are connected by a data line Q3.

The operation of the above configuration will be explained below.

Tuner A and monitor B are powered on, and video signals from SHF antenna 2 or U/V antenna 3 are processed by video signal processing circuit 4 and synchronization signal detection circuit 5. The image information signal that is the output of the video signal processing circuit 4 is transmitted to the monitor B via the image information signal line el, and the synchronization signal that is the output of the synchronization signal detection circuit 5 is transmitted to the monitor B via the synchronization signal line Q. The image is displayed on the CRTl.

Next, the data storage operation will be explained with reference to FIG.

When tuner A and monitor B are connected and both are powered on for the first time, CPU 13 of monitor B reads data from memory b and transfers this memory data to tuner A's C.
The CPU 8 of tuner A stores the transferred memory data by writing all of it to memory a. Next, when the control in monitor B is executed and the data is added or updated in memory b, the CPU of monitor B transfers the control data to the CPU 8 of tuner A, and the CPU 8 of tuner A transfers the control data to add or update data in memory a. Data is updated. Then, each time data is added to or updated in memory b of monitor B, data is added to or updated in memory b of tuner A until the power is turned off. The latest data is stored.

When tuner A and monitor B are powered off and then turned on again, both CPUs
, ia reads data from each memory a and b and stores it in memory b.
Either one of the CPUs 8,
13 checks.

If the data in memory B is missing, the CPU transfers the missing data to the CPU 13 of monitor B and the CPU
13 is stored in memory b. Therefore, even if some or all of the data in memory b of monitor B is destroyed due to discharge of the CRTI, etc., data will be transferred from memory a of tuner A to compensate for the contents of memory b of monitor B, so accidents due to data destruction may occur. do not.

Furthermore, since the memory a of the tuner A holds the memory data of the monitor B, even when controlling the monitor B, the character generator 7 of the tuner A can be used to display the screen. Incidentally, when monitor B is operated as a single item, the CPU 13 of monitor B performs all the controls, and the character generator 12 in monitor B is also used for screen display. Furthermore, in the embodiment described above, the memory data is transferred using the data line e3, but if the memory data is transferred using the no-information section of the image information signal or synchronization signal, the data line g becomes unnecessary. .

[Effects of the Invention] As described above, according to the present invention, a monitor having a CRT and a memory, and a video device having a memory ζ but not having a CRT are provided, and the memory data of the monitor is stored in the memory of the video device. Therefore, even if the monitor's memory is destroyed due to discharge of a CRT, the data stored in the video equipment's memory can be transferred to the monitor's memory to compensate, thereby preventing accidents caused by memory being destroyed. It has the effect of being able to do it.

[Brief explanation of drawings]

1 and 2 show an embodiment of the present invention, FIG. 1 is a circuit block diagram of a television system, FIG. 2 is a flowchart of memory storage, and FIG. 3 is a diagram of a conventional television system. It is a circuit block diagram. A... Tuner (video equipment), B... Monitor, l.
・・CRT, 8.13-CPU (control unit), a,, b
-Memory.

Claims (1)

[Claims] (1) A monitor having a CRT, a memory for holding data, and a control unit for controlling this memory, and a video device having a memory for holding data, a control unit for controlling this memory, and not having a CRT; A data storage method for a TV system, characterized in that memory data of a monitor and memory data of the video equipment can be checked and transferred, and the data in the memory of the monitor is stored in the memory of the video equipment to hold the data.