CN100449456C - Electric energy saving method and device for peripherals with more ports - Google Patents

Abstract

The present invention relates to a method and an apparatus for saving electricity of peripheral equipment with a plurality of port chips. The port chips at least comprise a first port chip. The electricity saving method of the present invention comprises: a use signal is firstly detected in the first port chip; that no nonuse port chips in the port chips are used is judged according to the use signal; the nonuse port chips are in the electricity saving mode. The present invention has the technical scheme that the characteristic that common peripheral equipment only simultaneously uses a specific port in the ports is used so that the rest nonuse port chips are automatically in the electricity saving mode.

Description

Electricity saving method and device with external unit of plurality of ports

Technical field

The present invention relates to a kind of external unit, and be particularly related to a kind of electricity saving method and device, utilize the mechanism of power saving can reach the economic aim that reduces power consumption and meet energy environment protection with external unit of plurality of ports with plural port.

Background technology

Because science and technology is more and more progressive now, also increasing to the demand of electricity, many computer products have become the some in our life, even on very close terms with us, and the energy resource consumption that how to reduce computer product has been most important now problem.

When making the external unit of apparatus plurality of ports in the past, often only use a port at one time, for example: have the one scan instrument apparatus to have USB port and LPT1 port, when selecting USB port for use, system causes the power wastage that there is no need still to the chip power supply of LPT1 port.

Summary of the invention

In view of this, the present invention is to provide a kind of electricity saving method and device with external unit of plural port.Meeting of the present invention enters battery saving mode to obsolete port chip, to reach the purpose of energy savings.

The invention provides a kind of electricity saving method with external unit of plurality of ports chip, described plurality of ports chip is a n port chip, wherein n is the positive integer greater than 1, described external unit also comprises a processor and an Application Specific Integrated Circuit, wherein, described processor is coupled to the port chip of n-1 at least in the described n port chip, and described Application Specific Integrated Circuit is coupled to a described processor and a described n port chip, and this electricity saving method comprises the following steps:

Described processor detects the described arbitrary use signal that is coupled to the port chip of n-1 at least of described processor, produces one according to described use signal and uses control signal to give described Application Specific Integrated Circuit;

Described Application Specific Integrated Circuit produces a power saving control signal according to described use control signal, and the non-use port chip that control is not used enters battery saving mode.

The invention provides a kind of electricity saver of external unit, comprising: n port chip, processor and Application Specific Integrated Circuit.Wherein n port chip is used to provide correct agreement and externally connects, and n is the positive integer greater than 1; Relevant processor part, it is coupled to n-1 port chip in this n port chip at least, is used for detecting arbitrary use signal of all port chips that are coupled to processor, to judge the non-use port chip that does not use in these n port chip; As for Application Specific Integrated Circuit, be couple to a processor and n port chip, in order to the signal that receiving processor transmits, make non-use port chip enter battery saving mode.

The present invention is owing to detect and judge all not at the port chip of user mode, and makes it enter battery saving mode, reaches the purpose of energy savings naturally.

For making above and other objects of the present invention, feature and advantage, can become apparent more, preferred embodiment cited below particularly, and conjunction with figs. elaborate:

Description of drawings

Fig. 1 is the electricity saving method process flow diagram of the external unit of the present invention with plurality of ports;

Fig. 2 is the circuit block diagram of the scanner of embodiments of the invention;

Fig. 3 is the circuit block diagram of the another kind of scanner of embodiments of the invention.

Description of reference numerals:

100: at one end detect among mouthful chip and use signal;

102: judge non-use chip in this port chip according to this use signal;

104: make this non-use port chip enter battery saving mode;

The 200:USB port chip;

The 202:1394 port chip;

204: processor;

206: Application Specific Integrated Circuit (being called for short ASIC);

208: phase inverter;

302: port chip 1;

304: port chip 2;

306: port chip 3;

308: port chip 4;

310: processor;

312: Application Specific Integrated Circuit (being called for short ASIC);

Embodiment

Please refer to Fig. 1, Fig. 1 is a kind of electricity saving method with external unit of plurality of ports, this external unit for example is the one scan instrument, it has USB port chip and 1394 port chips simultaneously, method of the present invention is as follows: in step (100), among these port chips, detect and use signal, for example, detect USB port chip signal in use; In the step (102), use signal is judged does not have use in the port chip chip according to this, we are referred to as non-use port chip, for example, judge that 1394 port chips are non-use chips; In step (104), make this non-use port chip enter battery saving mode, for example, make 1394 port chips enter battery saving mode.

Please refer to Fig. 2, is the circuit block diagram of a kind of scanner of the embodiment of the invention.In this circuit block diagram, comprise: Application Specific Integrated Circuit (Application Specified IntegratedCircuit is hereinafter to be referred as ASIC) 206, processor 204, phase inverter 208, USB port chip 200 and 1394 port chips 202.Processor 204 also has the purposes as other function of scanner except as the use signal that detects USB port chip 200; USB port chip 200 provides USB port and externally connects; 1394 port chips 202 provide 1394 ports externally to connect; ASIC206 is used for the control signal that receiving processor 204 transmits, and makes the port chip that does not have to use enter battery saving mode again; When scanner when using USB port chip 200, processor 204 can detect one and use signal, use signal according to this, processor 204 can transmit a control signal and give ASIC206, then ASIC206 can transmit a working signal, make USB port chip 200 enter mode of operation, this working signal makes 1394 port chips 202 enter battery saving mode through phase inverter 208; When scanner when using 1394 port chips, processor 204 can detect above-mentioned use signal, learn that the USB port chip does not have in use, processor 204 can transmit a control signal and give ASIC206, ASIC206 can transmit a power save signal, make USB port chip 200 enter battery saving mode, this power save signal makes 1394 port chips 202 enter mode of operation through phase inverter 208.

Please refer to Fig. 3, is the circuit block diagram of the another kind of scanner of the embodiment of the invention.In this circuit block diagram, comprise: Application Specific Integrated Circuit (all claiming ASIC below the Application SpecifiedIntegrated Circuit) 312, processor 310, port chip 1 302, port chip 2 304, port chip 3 306 and port chip 4 308.For example: port chip 1 302 can be the USB port chip, and port chip 2 304 can be 1394 port chips, and port chip 3 306 can be the COM1 port chip, and port chip 4 308 can be the LPT1 port chip.Processor 310 at this except the use signal of detection port chip 1302, port chip 2 304, port chip 3 306 and port chip 4 308, also can be as other function of scanner, ASIC206 is used for the control signal that receiving processor 204 transmits, and makes the port chip that does not have to use enter battery saving mode; When the port chip 1 302 of scanner in use, processor 310 can detect one and use signal, this processor 310 can transmit a control signal and give ASIC 312, this ASIC 312 can spread out of a power saving control signal, port chip 1 302 is just in use entered mode of operation, port chip 2 304, port chip 3 306 and port chip 4308 are entered battery saving mode.With should port chip 2304 in use, ASIC312 can enter battery saving mode to port chip 2 304, port chip 3 306 and port chip 4 308; With should port chip 3 306 in use, ASIC 312 can enter battery saving mode to port chip 1 302, port chip 2 304 and port chip 4 308; With should port chip 4 308 in use, ASIC 312 can enter battery saving mode to port chip 1 302, port chip 2 304 and port chip 3 306.Can know easily as those skilled in the art, plurality of ports chip of the present invention can be a n port chip, because having a port chip is at least using, have at least n-1 port chip to be coupled to processor so have, could correctly judge that chip and use, wherein n is the positive integer greater than 1.

In sum, the advantage that the present invention has: can effectively save electric power, will enter battery saving mode automatically less than the port chip that uses.

Though the present invention is illustrated in preferred embodiment, it is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention, when doing various changes and modification.But protection scope of the present invention should be with being as the criterion that claims were defined.

Claims (6)

1. electricity saving method with external unit of plurality of ports chip, described plurality of ports chip is a n port chip, wherein n is the positive integer greater than 1, described external unit also comprises a processor and an Application Specific Integrated Circuit, wherein, described processor is coupled to the port chip of n-1 at least in the described n port chip, and described Application Specific Integrated Circuit is coupled to a described processor and a described n port chip, and it is characterized in that: this method comprises the following steps:

Described processor detects the described arbitrary use signal that is coupled to the port chip of n-1 at least of described processor, produces one according to described use signal and uses control signal to give described Application Specific Integrated Circuit;

Described Application Specific Integrated Circuit produces a power saving control signal according to described use control signal, and the non-use port chip that control is not used enters battery saving mode.

2. the electricity saver of an external unit is characterized in that: comprising:

N port chip is used to provide correct agreement, externally connects, and wherein n is the positive integer greater than 1;

One processor, it is coupled to n-1 port chip in this n port chip at least, be used for detecting one of arbitrary signal that uses of all these port chips that are coupled to this processor, to judge in this n port chip a not non-use port chip of use;

One Application Specific Integrated Circuit is coupled to this processor and this n port chip, is used for receiving the signal that this processor transmits, and makes this non-use port chip enter a battery saving mode.

3. the electricity saver of external unit according to claim 2, it is characterized in that: also comprise a phase inverter, wherein this n port chip also comprises:

One USB port chip is coupled to one of this Application Specific Integrated Circuit and uses control end;

One 1394 port chips are coupled to an output terminal of this phase inverter, and an input end of this phase inverter is connected to this use control end of this Application Specific Integrated Circuit;

This use control end is in order to control this USB port chip and this 1394 port chip either-or enters this battery saving mode.

4. the electricity saver of external unit according to claim 2, it is characterized in that: this external unit is the one scan instrument.

5. the electricity saver of a scanner is characterized in that: comprising:

The plurality of ports chip is in order to external connection;

One processor is coupled to these port chips, is used for detecting one of these port chips and uses signal, to judge a non-use port chip that does not use in these port chips;

One Application Specific Integrated Circuit is coupled to this processor and those port chips, in order to receive the control of this processor, makes this non-use port chip enter a battery saving mode.

6. the electricity saver of scanner according to claim 5, it is characterized in that: also comprise a phase inverter, wherein those port chips more comprise:

One USB port chip is coupled to one of this Application Specific Integrated Circuit and uses control end;

One 1394 port chips are coupled to an output terminal of this phase inverter, and an input end of this phase inverter is connected to this use control end of this Application Specific Integrated Circuit;

This use control end is in order to control this USB port chip and this 1394 port chip either-or enters this battery saving mode.

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