JPH01269979A - Crt terminal device - Google Patents

Abstract

PURPOSE:To save the electric power of a CRT device by providing a CRT beam power switch which turns on and of only the CRT beam power supply in addition to a main power switch which turns on and off the power supply over the entire part of the CRT terminal device. CONSTITUTION:The CRT beam power switch 7 which turns on and off only the CRT beam power supply is provided in addition to the main power switch 4 which turns on and off the power supply over the entire part of the CRT terminal device. Namely, the signal from a KB 9 is transmitted through a control section 1. If the timer of a signal detecting sensor 10 is previously set at, for example, 5 minutes at this time, a CRT beam power supply off signal is transmitted from the sensor 10 to the power switch 7 and the CRT beam is interrupted to erase the screen when the signal is not detected for >=5 minutes by the sensor 10. The electric power of the CRT power supply is thereby saved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a CRT terminal device, in particular, a method for turning only the CRT power supply on.
This invention relates to a CRT terminal device that can be turned on and off.

[Prior art] Conventionally, turning on and off the power of a CRT in a CRT terminal device
FF was performed using the main power switch of the CRT terminal device.

[Problems to be solved] In the conventional CRT terminal device described above, the CRT power supply
Since N/OFF was performed only by the main power switch of the CRT terminal device, if the main power switch was set to OFF, the information signal from the control unit to the CRT would also be OFF.
When the CRT terminal equipment was started up again, the information signal had to be restarted.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a CRT terminal device that can save the power of the CRT power supply and does not require restarting the information signal.

[Means for solving problems] In order to achieve the above object, the present invention provides a main power switch that turns on and off the power of the entire CRT terminal device.
The configuration includes a CRT beam power switch that turns ON/OFF only the RT beam power source.

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

FIG. 1 is a circuit diagram of the embodiment, and FIG. 2 is a perspective view of the embodiment.

In these figures, l is a control unit of the CRT terminal device, which is composed of a CPU.

Reference numeral 2 denotes a power supply section, which is connected to the control section 1 through a power supply line 3 for the control section.

Reference numeral 4 denotes a main power switch provided in the power supply section 2, and by operating this main power supply step 4, the power supply section 2 of the entire CRT terminal device is turned on and off.

5 is a CRT, which is connected to the control section 1 by a CRT information signal transmission line 6, and also has a CRT beam? [The power source section 2 is connected to the CRTRT beam source line 8 via the switch 7.]
It is connected to the. The CRT beam "W source switch 7 is
It consists of a signal receiving type power supply ON/OFF switch.

9 is a keyboard (hereinafter referred to as KB).

It is connected to the control section 1 via the signal detection sensor 0 and the B signal line 11.

The signal detection sensor 10 is connected to the CR by a signal transmission line 12.
It is connected to the T-beam ffi source switch 7. Also,
The signal detection sensor 10 has a built-in timer.

In such a CRT terminal device, a signal from the KB 9 is transmitted to the control unit 1 through the signal detection sensor 10, and the timer of the signal detection sensor 10 is set to 1, for example, 5.
If the signal detection sensor 10 does not detect a signal for more than 5 minutes, the signal detection sensor 10 will send the CRT beam power switch 7 to the CRT beam power switch 7.
The F signal is transmitted, the CRT beam is cut off, and the screen disappears.

Further, when the signal from the KB9 is detected by the signal detection sensor 10, the CRT beam power supply switch 7RTRT beam signal is transmitted from the signal detection sensor 10, and the CRT beam signal is transmitted to the CRT beam power supply switch 7.
The RT beam power is turned on and the CRT screen operates normally.

A flowchart for performing such processing is shown in FIG.

As explained above, the CRT terminal device of this embodiment is
If the RT beam is not used for more than 5 minutes, the CRT
Since the beam power is turned off and the screen of the CRT 5 disappears, there is an effect that unnecessary power consumption of the CRT can be saved.

Even if the CRT beam power is turned off, the CRT
Since the information signal transmission line 6 is in the ON state, there is no need to restart the information signal as in the conventional case, and the terminal operation can be performed normally when the CRT beam power is turned ON.

[Effects of the Invention] As explained above, the present invention provides a CRT beam power switch that turns on and off only the CRT beam power in addition to the main power switch that turns on and off the power of the entire CRT terminal device. It is possible to turn off only the CRT beam power while leaving the CRT information signal transmission line in the ON state, thereby saving unnecessary CRT power consumption and eliminating the need to restart the information signal as in the past. It has the effect of becoming

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of the present invention, FIG. fJIJ2 is a perspective view of the embodiment, and FIG. 3 is a processing flow diagram of the main part. l2 control section 2: i'ft source section 3: power for control section'Ttlt source line 4 two main power switch 5: CRT 6: CRTJra signal transmission line 7: CRT beam power switch 8: CRT beam power line 9 : KB (keyboard) lO: Signal detection sensor (built-in 5-minute timer) 11:
KB Signal Line 12: Signal Transmission Line Agent Patent Attorney Kihei Watanabe Figure 1 Figure 2

Claims (1)

[Claims] A CRT terminal device characterized in that, in addition to a main power switch that turns on and off the power of the entire CRT terminal device, a CRT beam power switch that turns on and off only the CRT beam power source is provided.