CN1207645C - Electric power control method for monitor - Google Patents

Abstract

The present invention relates to a method for controlling electric power of a monitor, which comprises: a stage of judging a normal state or an electricity saving state; a stage of judging the normal state and supplying power for all circuits; a stage of judging the electricity saving state and displaying warning information of entering the electricity saving state; a stage of switching off a cathode power supply for heating and all of the circuits operated depending on methods of controlling the electric power in a selective way, when no key control input of a user is detected after waiting for definite time. Compared with the prior art, the present invention can reduce more consumption of the electric power.

Description

The electrical control method of monitor

(1) technical field

The present invention relates to a kind of electrical control method of monitor, is a kind of method of automatic economize on electricity, especially the method for the control electric power that will reduce to greatest extent as the electric consumption of computer, video device, monitor etc.

(2) background technology

The consumption of general color video monitor energy accounts for 50～80% of whole PC consumption.

Above-mentioned most of energy that monitor consumed is at kinescope, visible light luminous, thermal energy consumption, electronics emission, the high energy radiation, and sound equipment can disperse, but it is only just useful when kinescope is luminous, and only just useful when the overseer can see.

The radiation that occurs in above-mentioned is omitted out when vibration takes place, and is unfavorable for health, and this has been the problem of focus.The manufacturers of monitor have also paid many reasearch funds in order to reduce radiation.

Also in the increase that continues, it has become the main consumption source of electric energy in the use of PC.U.S. environmental protection joint conference exerts pressure to computermaker, impels them to develop the system that makes new advances as early as possible, so that raise the efficiency.

Low-voltage IC and little power managed are given the condition of using that provides that consumes are provided when not using computer.But before producing the substitute and more effective CRT that is fit to CRT (cathode-ray tube (CRT)), the efficiency of wanting to improve PC is not that part is easy to thing.

Below shown in be the battery saving arrangement of existing computer monitor.

Shown in Figure 1 is the block scheme of former computer display screen battery saving arrangement.

That is, monitor is connected with cooperating VGA cable 1.

Connection input signal in above-mentioned will be separated into colour signal and synchronizing signal, output to simultaneously on the interface 2, and interface 2 will be monitored the normal condition of synchronizing signal, readiness, suspension status and off-state.And the regulator 3 that possesses electric power control and the control of monitor power supply electric power will be by the colour signal of above-mentioned interface 1 output, the while input sync signal.And, to CRT incoming video signal 4 with power supply is provided, constituted procedure chart 1 by pilot signal according to the regulator in above-mentioned 2.

Add traditional economize on electricity monitor operations precedence diagram of the above formation, be illustrated in fig. 2 shown below.

That is, regulator 3 is that the synchronizing signal of 2 outputs of the interface from above-mentioned is carried out the monitoring of state and judged 1S.

Judged result, if vertically reach horizontal-drive signal, the words 2S from the normal input of above-mentioned PC then can be judged as normal condition.First standard signal and second standard signal are exported normally, and by video circuit 4, then entire circuit is in steady state (SS) 3S.

Above-mentioned regulator 3 is synchronizing signals of above-mentioned interface 2 outputs of monitoring, if vertical signal, carry out undesired input from above-mentioned PC, or synchronizing signal is carried out abnormal words, 4S then can be judged as electricity-saving state, be stand-by state or SUSPEND MODE, with first standard signal (level1) or with the 2 change outputs of second standard signal.

Above-mentioned video circuit 4 is except the power supply of supplying with CRT well heater negative electrode, method according to control electric power, optionally operate all power circuit 5S, promptly, the horizontal-drive signal that above-mentioned regulator 3 countings take place between vertical signal, as do not have horizontal synchronizing signal and then change above-mentioned the 2nd standard signal, the interval counting of horizontal-drive signal surpasses the videoscanning ratio widely, and then can judge does not have vertical synchronizing signal.Just change above-mentioned first standard signal.When having one to change in the 1st, the 2nd standard signal, all circuit of optionally operating by the control electrical methods except that well heater cathode power (electric heater power among Fig. 2) all are switched off.

At this moment the monitor power consumption of electricity-saving state is 80～90%.

Under such electricity-saving state, above-mentioned synchronizing signal is all imported, and above-mentioned regulator 3 is to be normal condition, because above-mentioned the 1st, the 2nd standard signal is normally exported, above-mentioned monitor just is activated.

At this moment, under waiting status, the activation again of monitor is because well heater is under the "on" position, so need 5 seconds with the interior time.

Above-mentioned regulator 3 is when all synchronizing signals of above-mentioned PC are not transfused to, and can think that turning off state 6S all changes the 1st, the 2nd standard signal, turns off the well heater cathode power of above-mentioned CRT, and optionally operates all power circuits by the control electrical methods.

Can reduce 98% or more in the power consumption of turning off the monitor under the state this moment.

Such process, primary power carries out under not being switched off repeatedly.

As mentioned above, the power-saving method of existing monitor has following some problem:

One, existing method is according to judging vertical and horizontal-drive signal, dividing three phases that monitor is controlled, so it is restricted to offset the minimizing of power consumption power; In other words, because at stand-by state and the past electric heater supply power of hold mode, so can not reduce the electric power of well heater.

Two, under the power supply status of the monitor of turning off the heater power source that comprises off-position, activate monitor more just need be to heater heats, and this needs the time, and the required time is approximately 8 seconds.This is a long time concerning the user.

Three, under the situation that user's reality does not also stop fully, when doing other thing, computer is not switched off before the user also has cognition, makes troubles to the user thus.

(3) summary of the invention

What deserves to be mentioned is that display will stop the method for monitor high energy circuit when not being used.It is according to modulator-demodular unit, the input media of mouse, keyboard etc. nonmobile phase determined.

Device do not use the end of many computer monitors is that screen is eliminated technology such as circuit and picture defencive function.Be that button or rolling mouse activate original picture.

This technology adopts is to send signal reducing power consumption to the microprocessor in the monitor, or in monitor attachment device (dumb).Can stop the operation of the power circuit of monitor like this, also can recover its operation.

The present invention is in order to solve prior art problems, and the whether operating position according to PC adopts dual mode that monitor is controlled, and this can reduce the consumption to electric power, can shorten the activationary time of monitor simultaneously.

For reaching above-mentioned purpose, one of method that provides now is under the condition of existing signal not being added, to adopt the additional method of a kind of choice criteria signal.

A kind of electrical control method of monitor, it comprises: the stage of judging normal condition or electricity-saving state: the vertical/horizontal synchronizing signal of utilizing PC to import whether judge by normal supply; Judge described normal condition, power supply is supplied with all circuit; Judge described electricity-saving state, show that entering electricity-saving state is warning message; The keying input that wait is fixed time and do not sensed the user then disconnects the cathode power of heating and all circuit of operating by control electric power means selectivity.

Effect of the present invention is as follows:

1, existing method is, uses normal condition, waiting status, the power consumption of 3 stage control such as off-state monitor, the present invention uses normal condition, and the power consumption of two stage control such as electricity-saving state monitor more reduces power consumption by contrast.

That is, in the past, one in the vertical/horizontal signal was transfused to the cathode power of still supplying with well heater, but the present invention's signal in vertical/horizontal is transfused to the cathode power that just disconnects well heater.Relatively more reduce the consumption of electric power.

2, need about 8 seconds when the reactivation of OFF state becomes normal condition, but the present invention fix time in, OFF voltage is kept 0V.Grid voltage is kept+V.The CRT thermoelectron is emitted to greatest extent, in 5 seconds times spent.

Above-mentioned purpose, design feature and effect for further specifying invention are described in detail the present invention below with reference to accompanying drawing.

(4) description of drawings

Fig. 1 is the internal structural map of general monitor;

Fig. 2 is the electric power control operation procedure chart of existing monitor;

Fig. 3 is the electric power control operation procedure chart of monitor of the present invention;

Fig. 4 is the timing diagram of the electric power control of relevant monitor of the present invention.

(5) embodiment

Monitor electric power energy-saving method of the present invention is divided into the judgement to normal condition and power save mode.

Become normal condition as judgement all circuit required electric powers then are provided.As be judged as power save mode, then on monitor, send prompting, and wait for setting-up time.Comprise the well heater cathode power and rely on control electric power means to have whole power circuits of selectivity operation if experience the control signal that provides less than the user then enter to close.

Another measure to monitor energy saving among the present invention is: if change into normal condition from electricity-saving state, within a certain period of time, negative electrode OFF voltage is 0V, and grid voltage is additional+V then, and thermoelectron is its characteristics to emit to greatest extent.

Another characteristics of the present invention are to be to exist with the counting form stand-by period entering electricity-saving state.

Monitor control electrical methods of the present invention; Be described in more details with reference to drawing.

At first, it is identical that the hardware of PC monitor of the present invention constitutes with existing formation, so software is the method for control monitor electric power among the present invention.

Fig. 3 is the precedence diagram of the present invention to the control of monitor electric power.

Fig. 4 is by the power supply supply timing diagram (timing figure) of the present invention when the activating power.

Monitor control power source method of the present invention is divided into normal condition and two stages of electricity-saving state.

That is, above-mentioned regulator 3 shown in Figure 3 is monitoring synchronizing signal 11S from interface 2 outputs.

Judge whether vertical synchronization or horizontal-drive signal normally import 12S from PC, if in synchronizing signal, do not import or synchronizing signal is not imported for one, can think that electricity-saving state 12S and Fig. 4 together, show that to the user computer has entered the warning message of electricity-saving state from the improper sensing points of synchronizing signal.

As from now on, will not enter electricity-saving state when in 10 seconds, importing.

The counting 10,9,8,7 that enters the economize on electricity situation in above-mentioned warning message bottom is shown as and counts down.13S then judges input condition 14S in the stand-by period, if being transfused to, keying signal then recovers in monitor stages, if not being transfused to, keying signal then will not change the 1st, the 2nd standard signal, not only the cathode power of the cathode heater of the well heater of above-mentioned CRT, and disconnect that optionally to operate the promptly all power supplys of all power supply 15S be 0V by controlling electrical methods, voltage on the electrode is with regard to ground connection, and the monitor of such electricity-saving state can reduce more than 98%.

The vertical/horizontal synchronizing signal of the above-mentioned PC of above-mentioned judged result 12S is normally imported, and can just be judged as normal condition.Whether normal condition is judged 17S from what electricity-saving state converted to.

Whether above-mentioned judged result 17S is converted under electricity-saving state, and (level11 and the 2nd standard signal (level 2) are exported normally, connect all circuit by above-mentioned video circuit the 1st standard signal.

Promptly all power supplys based on the well heater negative electrode of CRT are supplied under normal condition, the grid of CRT be negative voltage (V).The above results 17S, electricity-saving state are converted into just often same with Fig. 4, in schedule are to keep 0V, and control under the condition of positive voltage+V this moment, allows it emit thermoelectron 19S to greatest extent.So when electricity-saving state was activated as normal condition again, the thermoelectron maximum was emitted, and activating required time again is in 5 seconds, and this is that voltage V keeps 0V, keep+that time of V voltage is about 2 seconds degree is just much of that.

Said process is at primary power 16S when disconnected not, can carry out repeatedly.

We are not subjected to the restriction of said method, judge normal condition or electricity-saving state and use from the colour signal of PC input, utilize the interior change of monitor to implement the method for two-stage control electric power of the present invention.

Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.

Claims (5)

1. the electrical control method of a monitor is characterized in that described electrical control method is:

Judge the stage of normal condition or electricity-saving state: the vertical/horizontal synchronizing signal of utilizing PC to import whether judge by normal supply;

Judge described normal condition, power supply is supplied with all circuit;

Judge described electricity-saving state, show that entering electricity-saving state is warning message;

The keying input that wait is fixed time and do not sensed the user then disconnects the cathode power of heating and all circuit of operating by control electric power means selectivity.

2. the electrical control method of monitor as claimed in claim 1 is characterized in that:

When described electricity-saving state was transformed into normal condition, the negative electrode OFF voltage of being fixed time was kept 0V, and grid voltage is+V, to emit thermoelectron to greatest extent.

3. the electrical control method of monitor as claimed in claim 2 is characterized in that:

Described negative electrode OFF voltage is kept 0V, and keeping grid voltage is+V that the used time is in 2 seconds.

4. the electrical control method of monitor as claimed in claim 1 is characterized in that:

Whether normal supply judges that the method for normal condition or electricity-saving state is to the vertical/horizontal synchronizing signal of the described PC of utilization input:

Vertical/horizontal synchronizing signal normal supply from the PC input then is in normal condition, and the improper input of at least one synchronizing signal then can be judged electricity-saving state in two synchronizing signals of vertical/horizontal of described PC input.

5. the electrical control method of monitor as claimed in claim 1 is characterized in that:

Waiting status and count status when entering electricity-saving state, the electrical control method that on monitor, shows with the warning form.

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