JPS5952456B2 - CRT display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a CRT display device with a light pen (hereinafter referred to as CRT) that is used while being connected to a digital computer (hereinafter referred to as computer).

FIG. 1 is a block diagram showing an example of a conventional CRT connected to a computer.

Generally, a display signal is sent from the computer 11 to a control section 12a or 12b, and the control section 12a or 12b displays a screen on a monitor section 14a or 14b in response to the display signal. The monitor sections 14a and 14b normally use cathode ray tubes.

The operator places the monitor section 14a or 14b on the light pen section 1.
By instructing (touching) 3a or 13b, various commands can be given to the computer 11. That is, if you specify the position of the monitor section 14a or 14b with the light pen section 13a or 13b for each display screen,
Usually, what the computer 11 is to do is set in advance in the computer 11. Here, the light pen part 13a
2, how to detect the position of the monitor section 14a or 14b when the monitor section 14a or 14b is designated by the monitor section 13b will be explained below with reference to FIG. The control section 12a includes an instruction detection section 1, a scanning line detection section 2, a position storage section 3, and an input/output control section 4.

A display signal from the computer 11 is sent to the input/output control section 4, and a screen is displayed on the screen 14a according to the display signal. When an instruction is given to the monitor section 14a with the light pen section 13a in this state, the instruction detection section 1 detects the instruction and sends a position detection start signal to the input/output control section 4. As a result, the input/output control section 4 allows the scanning line of the monitor section 14a to
Start measuring time at a specific location (usually the top left). When the scanning line detection section 2 detects a scanning line via the light pen section 13a, it sends a scanning line detection signal to the input/output control section 4. Generally, a signal line is used to transmit optical signals between the light pen 13a and the scanning line detection section 2, and the scanning line detection section 2 converts the optical signal into an electrical signal and sends it to the input/output control section 4. It's summery. The input/output control unit 4 ends the time measurement when receiving the scanning line detection signal, thereby detecting the time it takes for the scanning line to move from the specific position to the position specified by the light pen unit 13a, and from that time, the light A position signal is generated when the pen section 13a touches the monitor section 14a, and this signal is sent to the position storage section 3. Also, at the same time, computer 11
Sends a position write signal to. By inputting the contents stored in the position storage section 3, the computer 11 can know the position of the moniker section 14a touched by the light pen section 13a. In this way, in the conventional CRT, each of the monitor sections 4a and 14b has a light pen section 1.
3a and 13b correspond to each other in a fixed manner. For example, when two sets of CRTs are lined up and used by an operator, the light pen section 1
After instructing the monitor section 14a in step 3a, when instructing the monitor section 14b, the user must switch to the light pen section 13b before instructing. Furthermore, when three or more sets of CRTs are lined up and used by an operator, it is common for the operability to become increasingly difficult, which forces the operator to work unnecessarily. The present invention has been made to improve the above-mentioned problems, and an object of the present invention is to provide a CRT display device with good operability.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 is a block diagram showing an example of a case where a CRT according to the present invention is connected to a computer, and parts corresponding to those in FIGS. 1 and 2 are given the same reference numerals and their explanation will be omitted.

10 is a CRT control device, which includes control units 12a, 12b, 12;
n, switching devices 5X, 6x, an instruction detecting section 1X, a scanning line detecting section 2X, and a switching indicator 7X.

Further, the control units 12a, 12b, 12n have a position storage unit 3a.
, 3b, 3n and input/output control sections 4a, 4b, 4n. Connect the light pen section 13X to all monitor sections 14a.
, 14b, and 14n. Further, the instruction detecting section 1X and the scanning line detecting section 2X each have a switching device 5X,
Only one of the input/output control sections 4a, 4b, and 4n is contacted via the 6X. 7X is a switching indicator, which sends a switching signal to the switching devices 5X and 6X.

Any system may be used as long as it switches the scanning line detection signal. Control units 12a, 12b, 12n and computer 1
The signal between 1 and 1 is the same as a conventional CRT. The operator uses the light pen section 13X to monitor the monitor sections 14a, 14b, 1.
Various commands can be sent to the computer 11 by specifying an arbitrary position from among 4n. The operator first presses the switching indicator 7X.
The monitor unit 14 to which instructions are to be given by operating the
The instruction detection section 1X and the scanning line detection section 2x are communicated with the input/output control section 4a or 4b, 4n corresponding to the input/output control section 4a or 14b, 14n. Next, the user instructs the desired monitor section 14a or ]4b, 14n using the light pen section 13X. Thereby, the computer 1 can input the contents stored in the position storage section 3a, 3b, or 3C in the same manner as a conventional CRT.

As is clear from the above, the operator, for example, monitors the monitor section 14a.
Even when instructing , and then instructing the monitor section 14b, there is no need to change hands with the light pen section, and it is only necessary to operate the switching indicator 7X, resulting in extremely high operability.

Here, the switching indicator 7X is the monitor section 14a, 14b, 1
Depending on the use of the CRT, there are various possibilities, such as placing it near the CRT 4n or incorporating it into the light pen section 13X.

The invention is not limited to the embodiment shown in FIG.

FIG. 4 shows another example of the present invention, in which the switching device 5X of FIG.
A branching device 5Z is provided instead of , and the other features are the same as in FIG. 3. The switching indicator 7X switches only the signals from the scanning line detection section 2X to the input/output control sections 4a, 4b, and 4n. To explain the function of the CRT device shown in FIG. 4, after operating the switching indicator 7X so that the signal from the scanning line detection section 2X reaches the input/output control section 4a,
When the light pen section 13X instructs the monitor section 14a, the instruction detection section]X sends a position detection start signal to the input/output control sections 4a, 4b, and 4n in parallel.

As a result, the input/output control units 4a, 4b, and 4n start time measurement when the scanning lines of the monitor units 14a, 14b, and 14c are at specific positions, respectively. When the scanning line detection section 2X detects a scanning line via the light pen section 13X, a scanning line detection signal is sent only to the input/output control section 4a through the switching device 6X.

Since the other input/output control units 4b and 4n do not receive the scanning line detection signal 7, they stop measuring the time and stop the operation related to position detection after the specified time has elapsed.
The computer 11 can know the indicated position by inputting the contents stored in the position storage section 3a. In this case, since the switching device for the position detection start signal is replaced with a branching device, there are advantages that the configuration is simple and the reliability is high. FIG. 5 shows yet another embodiment of the present invention, in which a branching device 6Z is provided in place of the switching device 6X of FIG.

What is switched by the switching indicator 7X is the instruction detection unit 1X.
This is a signal that reaches the input/output control units 4a, 4b, and 4n.
In the CRT device shown in FIG. 5, after operating the switching indicator 7X so that the signal from the instruction detection section]X reaches the input/output control section 4a, the light pen section
When instructed, the instruction detection section 1X sends a position detection start signal to the input/output control device 4a via the switching device 5X. As a result, the input/output control section 4a is controlled by the monitor section 14.
Time measurement starts when the scanning line a is at a specific position.

Here, since the position detection start signal is not sent to the input/output control units 4b, 4n, the input/output control units 4b, 4n do nothing.

When the scanning line detection unit 2X detects a scanning line via the light pen unit 13X, the input/output control unit 4a
, 4b, and 4n, scanning line detection signals are sent in parallel to each of them. However, since only the input/output device 4a has started time measurement, the input/output devices 4b and 4n do nothing even if the scanning line detection signal is sent. Only the input/output device 4a sends a position signal to the position storage section 3a. In this way, the computer 11 can know the indicated position by inputting the contents stored in the position storage section 3a. According to the configuration shown in FIG. 5, the switching device for the scanning line detection signal is replaced with a branching device, so the configuration is simple and the reliability is high. There is an advantage.

FIG. 6 shows still another embodiment of the present invention. The CRT control device 10 includes control units 12a, 12b, 12n, and a branching device 5.
Z, 6Z, instruction detection section]x, and scanning line detection section 2X.

Monitor parts 14a, 14b, 14n and light pen part 13
X is the same as in Figure 3. The operator is the light pen section 13
The effect when the monitor section 14b is instructed by X will be explained.

When the light pen section 13X instructs the monitor section 14b, a position detection start signal is sent in parallel from the instruction detection section 1X to the input/output control sections 4a, 4b, and 4n. As a result, the scanning lines of the monitor sections 14a, 14b, and 14c are set to a specific value by the input/output control section 4a after Ta seconds, the input/output control section 4b after Tb seconds, and the input/output control section 4n after Tn seconds. Start time measurement at position. (Ta may also be O) Here, Ta+TO≦Tb. Tb+TO≦Tn (TO is a value longer than the time required for the scanning line to scan the entire surface of the monitor section 14a, 14b, or 14n).

Furthermore, the control units 4a, 4b, and 4n control the monitor unit 1 after receiving the position detection start signal until Ta, Tb, and Tn, respectively.
4a, 14b, 14n, and therefore the light pen section 13X does not output display signals to the monitor sections 14a, 4b during this period.
, ]4n so that no scanning line is detected. As a result, the scanning line detection unit 2X cannot detect scanning lines at least during the period from the light pen instruction to Ta+TO. If the scanning line detection signal is not sent from the scanning line detection unit 2X during Ta-Ta+TO, the input/output control 4a
The time measurement is stopped, and the monitor section 14a monitors the light pen section 13.
It is determined that the instruction was not given by x. Next, the input/output control unit 4b starts time measurement Tb seconds after receiving the position detection start signal (≧Ta+TO), and at the same time the monitor unit 1
A display signal is sent to the monitor section 14b so that the scanning line operates from a specific position on the monitor section 14b.

Since the light pen section 13X is instructed by the monitor section 14b, the scanning line detection section 2X
sends the scanning line detection signal to the input/output control units 4a, 4b, and 4n.

Here, since the input/output control units 4a and 4n are not measuring time, they do nothing. Since only the input/output control section 4b is measuring time, the light pen 13X is detected by the scanning line detection signal.
Detects the indicated position. The input/output control unit 4b is a computer] 1
The method of notifying the designated position is the same as that shown in FIG. or,
The input/output control unit 4n receives the scanning line detection signal before starting time measurement, but at this time, it determines that the monitor unit 14n has not been instructed and stops any processing related to detecting the indicated position.

In this way, the computer 11 can know the monitor section and the indicated position indicated by the light pen section 13X.

This example has particularly excellent operability because there is no switching device, and there is no need for the conventional operation of changing the light pen.

Furthermore, the CRT control device 10 described in this example is an example in which the switching device is not provided, and if the device has one light pen section and can detect the indicated position when there are multiple monitor sections, it can be used as a CRT control device. It goes without saying that the control device 10 may be of any type. FIG. 7 is a diagram showing still another embodiment of the present invention.

The embodiment of FIG. 7 has the same configuration as that of FIG. 6 except that an information transmitter 8X is provided between the light pen section 13X, the scanning line detection section 2X, and the instruction detection section 1x of FIG. A feature of this embodiment is that the information transmitter 8x is connected to the instruction detecting section 1X and the scanning line detecting section 2X by radio signals.

The operation of this embodiment is essentially the same as that shown in FIG.

That is, the only difference is whether the signals between the light pen section 13X, the position detection section 1x, and the scanning line detection section 2X are communicated by wire or wirelessly. According to this example, by manufacturing the light pen section 13X and the information transmitter 8X in a small size, a light pen with extremely good operability that can be worn and used by an operator like a wireless microphone is obtained.

As described above, the CRT of the present invention eliminates the need for the operator to change the light pen, which was the biggest difficulty in the past, and is extremely easy to operate. . It goes without saying that the configuration of the CRT control device 10 can be modified in various ways without changing the gist of the present invention, which is that a single light pen section 13X can be used to operate a plurality of monitor sections.

[Brief explanation of drawings]

Figure 1 is a block diagram of an example in which a conventional CRT is connected to a computer, Figure 2 is a block diagram showing the configuration of a conventional CRT,
FIG. 3 is a block diagram showing an embodiment in which a CRT according to the present invention is connected to a computer, and FIGS. FIG. 6 is a block diagram showing a modification example when 1, 1X... Indication detection section, 2, 2X...
・Scanning line detection section, 3, 3a, 3b, 3n... Position storage section, 4, 4a, 4b, 4n... Input/output control section, 5X, 6X... Switching device, 5Z, 6Z・
...Branch device, 7x...Switching indicator, 8
x... Information transmitter, 11... Computer,
12a, 12b, 12n... control unit, 13a,
13b, 13x...Light pen section, 14a, 1
4b, 14n...Monitor section, 10...
CRT control device.

Claims (1)

[Claims] 1. A CRT control device that includes a plurality of display units, a light pen that can indicate any display unit among these display units, and a CRT control device that detects the position of the display unit indicated by the light pen based on a signal from the light pen. A CRT display device with a light pen, comprising: