JPH07141580A - Monitor system - Google Patents

Abstract

PURPOSE:To provide a monitor system which is not inconvenient even when a signal to be monitored is switched by automatically adapting a monitor device side to various signal systems of image signals. CONSTITUTION:In the monitor system which selectively displays respective monitor image signals, supplied from plural image signal output means 1, on a multiscan monitor 2, a switching means 10 is provided with a switching part 11 which switches the monitor image signals, a storage part 12a which stores signal system information as to the respective monitor image signals supplied to respective terminals of the switching part, and a control part 12 which performs switching control over the connection terminals of the switching part, reads signal system information on the monitor image signals supplied to selected terminals out of the storage part 12a, and supplies a control signal based upon the read signal system information to the multiscan monitor 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention switches a large number of image signals such as image signals branched from a plurality of monitor televisions and image signals from a television camera and supplies them to one monitor device for display. The present invention relates to a monitoring system capable of various kinds of monitoring.

[0002]

2. Description of the Related Art It has been conventionally practiced to switch a large number of image signals such as image signals branched from a plurality of monitor televisions and image signals from a television camera to display a selected image on one multi-scan monitor. It is used as an operation monitoring system for machine tools in factories.

FIG. 4 shows such a conventional monitoring system. In this figure, a television camera 3 for machine tool monitoring
The image signal output from 1 is input to the switching device 34 via the transmission line 37, and the image signal obtained by branching the image signal in the monitor television 32 displaying the operating state of the machine tool is transmitted via the transmission line 38. The image signal input to the switching device 34 via the switching device 3 is further branched via the transmission path 39 to the image signal for displaying the screen on the monitor television 33.
It is entered in 4. As the image signal, for example, R,
G and B signals and the vertical synchronizing signal V.G. SYNC, horizontal sync signal H. SYNC is being transmitted.

The switching device 34 selects and outputs one of the input image signals according to the switching control signal from the switching control section 35. The image signal output from the switching device 34 is supplied to the multi-scan type video monitor television 36, and an image based on the selected image signal is displayed. The switching control unit 35 has a function of automatically selecting an input image signal sequentially and a function of manually switching to an image signal, and it is possible to select either one of the functions as required.

Although only two monitor televisions are shown, a plurality of monitor televisions are also provided. However,
The manufacturers of these monitor TVs do not match, or the standards and the like differ, and the scanning frequency and the image signal system such as the interlace system do not necessarily match. For this reason, the video monitor television 3 is provided so that the image can be normally displayed even if the scanning frequency or the like is different.
6 is a multi-scan system.

[0006]

However, the device for switching a plurality of monitor signals as described above has the following problems. In particular, monitor image signals in machine tools and the like often do not have a uniform signal format for each manufacturer or each model. Therefore, on the monitor device side where various image signals are switched and supplied, a multi-scan monitor device is provided as described above corresponding to various signal systems such as the difference in the number of scanning lines and the interlace system or the non-interlace system. Although it is used, the internal circuit system must actually be switched on the monitor device side according to the signal system. For this switching, various connector portions are prepared according to the method, and the connection is changed, or the operator performs a predetermined mode switching operation.

However, this makes it impossible to take a prompt action when switching the images to be monitored. Especially in a system where the monitor signals from various machine tools are sequentially switched and displayed in a factory or the like, and it is possible to monitor each, it is very troublesome to change the connector or perform the mode switching operation every time switching.
Further, this makes it impossible to carry out sufficient monitoring, resulting in a problem that an effective monitoring system cannot be obtained.

[0008]

Therefore, according to the present invention, even when there are various types of image signals as described above, the monitor device side automatically corresponds to each image signal and monitors it. It is an object of the present invention to provide a monitoring system that does not cause inconvenience when switching signals.

To this end, a plurality of image signal output means for outputting the monitor image signal and a switching means for selectively selecting and outputting the monitor image signal from each monitor image signal supplied from each image signal output means. And a multi-scan monitor means that is supplied with the monitor image signal output from the switching means and is output for display. In the monitoring system, each monitor image signal supplied from each image signal output means is used as the switching means. A switching unit that outputs the monitor image signal that is supplied to the terminal and that is connected to the connected terminal, a storage unit that stores signaling method information for each monitor image signal that is supplied to each terminal of the switching unit, and a switching unit. The connection terminal switching control is performed, and the signal system information of the monitor image signal supplied to the selected terminal is read from the storage unit and read. To provided a controller for a control signal can be supplied to the multi-scan monitor means based on the No. scheme information.

[0010]

In the switching means to which various image signal output means are connected, a certain terminal is selected by previously storing the system information of the image signal supplied corresponding to each connection terminal. In this case, the system of the output image signal, that is, the image signal supplied to the multi-scan monitor means can be determined. Therefore, if the control signal for instructing the mode switching operation corresponding to the method is supplied to the multi-scan monitoring means according to the method, the multi-scan monitoring means responds to the image signal automatically supplied. become able to.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the monitoring system of the present invention is shown in FIG.
~ It demonstrates by FIG. FIG. 1 is a block diagram of a surveillance system, in which 1 is various image signal output devices,
2 is a multi-scan CRT monitor, 3 is a switching control unit, and 10 is a switching device.

As the image signal output device 1, C ₁ and C ₂ are, for example, TV cameras arranged at predetermined positions in a factory, and supply the photographed image signal SV to the switching device 10.
M _{NC1 to} M _NC2 are monitors for various machine tools, M _AV1 to
M _AV2 is a television monitor, and the switching device 1 branches the image signal SV displayed on these monitors.
I am trying to supply it to 0. Further, M _CM indicates an information device such as a personal computer, which supplies the image signal SV to the switching device 10 for displaying graphics and data. The image signal SV is, for example, R
These are a signal, a G signal, a B signal, a horizontal synchronizing signal, and a vertical synchronizing signal.

[0013] Thus in response to a number of image signal output device 1, the switching device 10 and switching unit 11 of the terminal T ₁ through T _n is provided is provided to the terminal T ₁ through T _n Image signal S of each image signal output device 1 (C _{1 to} M _CA ).
V is input. The switching unit 11 outputs the image signal supplied to the connected terminal among the terminals T _{1 to} T _n to the CRT monitor 2.

Reference numeral 12 is a CP for controlling the switching of the switching unit 11.
U, the connection terminal of the switching unit 11 is switched according to the switching command CM from the switching control unit 3. Switching control unit 3 outputs a switching command CM as predetermined terminal is connected among the terminals T ₁ through T _n in response to an operation of an operator, or, the terminal T _1, etc. by every predetermined time the timer count ~ T
_The switching operation is controlled as an operator's operation or an automatic operation, such as outputting a switching command so that _n is sequentially switched.

Further, the control unit 12 outputs a system control signal C _NT to the CRT monitor 2. CRT monitor 2
Is configured to switch the processing mode of the internal circuit system according to the system control signal C _NT and display and output image signals of various systems.

A storage unit for storing image data format data is provided as a RAM 12a inside the CPU 12. The data is stored in the RAM 12a by the operator inputting data at the stage when the devices of the monitoring system are connected and the system is upgraded, and the input data is stored as registration data. Where RAM
The terminals T _{1 to} T of the switching unit 11 are stored in 12 a.
It is data for discriminating the signal format such as the interlace method for the image signal SV input to _n .

The operator inputs the signal system data of the output image signal of the connected image signal output device 1 in association with each of the terminals T ₁ to T _n by the registration operation. As a result, for example, table data corresponding to the terminals T ₁ to T _n are stored as shown in FIG.

The control operation of the CPU 12 when the switching device 10 performs the switching operation in this monitoring system will be described with reference to FIG. When the switching command CM is input from the switching control unit 3, the process proceeds from step F101 to F102, and the switching command is first decoded to determine the terminal to be connected. Then, referring to the RAM 12a for the determined terminal, the signal system of the image signal supplied to the terminal is determined (F10
3). If it is a switching command to switch to the terminal T ₂ , the data of method A will be read from the RAM 12a.

Then, in response to the switching command, a switching control signal is issued to the switching section 11 to switch the connection terminal (F10
4) Also, the monitor system control signal C _NT is output to the CRT monitor 2 according to the system data read from the RAM 12a.
(F105). The switching operation is executed by the above processing, but the CRT
Since the system control signal C _NT is input to the monitor 2 to automatically switch the operation of the internal circuit system, the operator does not need to operate the CRT monitor 2 at all. For this reason, even when the places to be monitored are sequentially switched, the switching can be performed quickly, and there is no omission of monitoring, which is useful as a monitoring system.

The monitoring system of the present invention as described above can be widely used as various monitoring systems for factories, offices, shops and the like.

[0021]

As described above, in the monitoring system of the present invention, since the control signal based on the system data of the image signal supplied to the multi-scan monitor means is supplied, the control signal in the multi-scan monitor means is supplied. You can automatically switch the display processing method based on
There is no need for operator operations or connection changes. Therefore, there is an effect that the usability is good and sufficient monitoring can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a monitoring system of the present invention.

FIG. 2 is an explanatory diagram of a storage mode of method data of the monitoring system of the embodiment.

FIG. 3 is a flowchart of an operation process at the time of switching monitors of the monitoring system of the embodiment.

FIG. 4 is an explanatory diagram of a conventional monitoring system.

[Explanation of symbols]

 1 image signal output device 2 CRT monitor 3 switching control unit 10 switching device 11 switching unit 12 CPU 12a RAM

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masamitsu Sasaki 629 Oshiba, Mobara-shi, Chiba Futaba Electronics Co., Ltd.

Claims (1)

[Claims] 1. A plurality of image signal output means for outputting a monitor image signal, and a switching means for selectively selecting and outputting a monitor image signal from each monitor image signal supplied from each image signal output means. In the monitoring system, the monitor image signal output from the switching unit is supplied to the monitor unit for display and output, wherein the switching unit includes the monitor image signals supplied from the image signal output units. Is supplied to each terminal and outputs a monitor image signal supplied to the connected terminal, and a storage unit that stores signal system information for each monitor image signal supplied to each terminal of the switching unit. Controlling the connection terminal of the switching unit and reading out the signal system information of the monitor image signal supplied to the selected terminal from the storage unit. And a control unit capable of supplying a control signal based on the read signal system information to the multi-scan monitor means.