CN102545334A - Charge control circuit and method, consumable chip and imaging system - Google Patents
Charge control circuit and method, consumable chip and imaging system Download PDFInfo
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- CN102545334A CN102545334A CN2012100119878A CN201210011987A CN102545334A CN 102545334 A CN102545334 A CN 102545334A CN 2012100119878 A CN2012100119878 A CN 2012100119878A CN 201210011987 A CN201210011987 A CN 201210011987A CN 102545334 A CN102545334 A CN 102545334A
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Abstract
The invention provides a charge control circuit and method, a consumable chip and an imaging system. The charge control circuit comprises an acquisition module, a comparison module, a control module and an electric power storage unit which are sequentially connected, wherein the electric power storage unit is used for providing an emergency power supply for the consumable chip connected with the electric power storage unit; the acquisition module is used for acquiring a control command sent by an imaging device by a bus; the control command comprises first identification information, which corresponds to the target consumable chip directed by the control command; the comparison module is used for comparing the first identification information with pre-stored second identification information; the second identification information corresponds to the consumable chip connected with the electric power storage unit; and the control module is used for carrying out charge control on the electric power storage unit according to the comparison result. According to the invention, the charge control pertinence is improved, thus the electrical energy utilization rate of a charge power supply of the imaging device is improved.
Description
Technical field
The present invention relates to the imaging device technology, relate in particular to a kind of charging control circuit and method, consumable chip and imaging system.
Background technology
Ferroelectric random memory (Ferroelectric Random Access Memory is called for short FRAM) is a kind of high speed nonvolatile memory commonly used.Imaging device can be to online high speed read-write, the non-volatile memory of realization data of carrying out of the consumable chip that is integrated with FRAM.But because the FRAM price is higher, factor such as production line is limited has limited FRAM applying in fields such as imaging device consumptive materials.
For realizing the non-volatile memories of data at lower cost; Prior art is in imaging device; Adopt SRAM, nonvolatile memory (like EEPROM (Electrically Erasable Programmable Read-OnlyMemory is called for short EEPROM) or flash memory (FLASH) etc.) that price is lower and comprise the technology that the charging circuit of electric capacity cooperatively interacts.This prior art is set up EEPROM or FLASH and charging circuit for each consumable chip; When the imaging device powers on and the SRAM of a consumable chip read and write control, be the electric capacity charging of the charging circuit of each consumable chip; When imaging device power down, be this consumable chip power supply by the electric capacity of the corresponding charging circuit of this consumable chip, this consumable chip is realized the non-volatile memory of data thus with storing data conversion storage among its SRAM in EEPROM or FLASH.
Adopt altogether bus mode to communicate by letter between imaging device and a plurality of consumable chips.Above-mentioned prior art is in communication process; The imaging device timesharing is read and write control (the device single that promptly forms images is is only read and write control to a consumable chip) to a plurality of consumable chips; But needing is the electric capacity charging of the corresponding charging circuit of each consumable chip simultaneously; The power voltage-drop and the power consumption of imaging device have been increased thus; The corresponding electric capacity of consumable chip that causes on the one hand not having to communicate by letter with imaging device has filled waste of electric energy; The electric capacity rechargeable electrical energy that the consumable chip that causes on the other hand communicating by letter with imaging device is corresponding is not enough, and if imaging device provide electric current to cross conference to cause power voltage-drop excessive, influence imaging device and its current need and read and write the proper communication between the consumable chip of control.
Summary of the invention
The present invention provides a kind of charging control circuit and method, consumable chip and imaging system, is used to improve the utilization rate of electrical of imaging device charge power supply.
First aspect present invention provides a kind of charging control circuit, comprising:
The acquisition module, comparison module, control module and the electricity accumulating unit that connect successively;
Said electricity accumulating unit is used to connected consumable chip stand-by power supply is provided;
Said acquisition module is used to obtain the control command that imaging device sends through bus; Said control command comprises first identification information; Said first identification information is corresponding with the target consumable chip that said control command is pointed to;
Said comparison module is used for more said first identification information and second identification information that prestores; Said second identification information is corresponding with the consumable chip that said electricity accumulating unit connects;
Said control module is used for according to comparative result the control of charging of said electricity accumulating unit.
The present invention provides a kind of consumable chip on the other hand, comprises consumable chip main body and above-mentioned charging control circuit; Said charging control circuit is connected with said consumable chip main body.
The present invention also provides a kind of imaging system on the other hand, comprises imaging device and at least two above-mentioned consumable chips, and each said consumable chip and said imaging device are based on bus communication.
The present invention also provides a kind of charge control method on the other hand, comprising:
Obtain the control command that imaging device sends through bus; Said control command comprises first identification information; Said first identification information is corresponding with the target consumable chip that said control command is pointed to;
More said first identification information and second identification information that prestores;
According to comparative result to the control of charging of said electricity accumulating unit.
In charging control circuit provided by the invention and method, consumable chip and the imaging system; Charging control circuit is obtaining imaging device after the control command that bus is sent; Second identification information of the consumable chip at first identification information that this control command is comprised and self place; To the electricity accumulating unit control of charging, improve the specific aim of charging control according to comparative result, improved the utilization rate of electrical of imaging device charge power supply thus.
Description of drawings
Fig. 1 a is the structural representation of a kind of imaging system provided by the invention;
Fig. 1 b is the control command example that imaging device provided by the invention sends through bus;
The structural representation of the charging control circuit that Fig. 2 provides for the embodiment of the invention one;
Fig. 3 is the flow chart of the charge control method of charging control circuit shown in Figure 2;
The structural representation of the charging control circuit that Fig. 4 provides for the embodiment of the invention two;
Fig. 5 is the flow chart of the charge control method of charging control circuit shown in Figure 4;
The structural representation of the charging Control current that Fig. 6 provides for the embodiment of the invention three;
Fig. 7 is the flow chart of the charge control method of charging control circuit shown in Figure 6;
Fig. 8 is that the charging current of each consumable chip under the charge control method shown in Figure 7 changes example;
The flow chart of the charge control method that Fig. 9 provides for the embodiment of the invention four;
The structural representation of the charging Control current that Figure 10 provides for the embodiment of the invention five;
Figure 11 is the flow chart of the charge control method of charging control circuit shown in Figure 10;
Figure 12 is that the charging current of each consumable chip under the charge control method shown in Figure 11 changes example.
Embodiment
In the technical scheme provided by the invention, imaging device is printer, facsimile machine, photocopier etc. for example, and consumable chip is ink box chip, imaging box chip etc. for example.Fig. 1 a is the structural representation of a kind of imaging system provided by the invention.Imaging system shown in Fig. 1 a comprises: imaging device 1 and at least two consumable chips 2, between each consumable chip 2 and the imaging device 1 based on bus communication.
Imaging device 1 is only communicated by letter with a consumable chip at every turn, and its communication process generally includes: wake consumable chip up and consumable chip is read and write two stages of control.These two stages all can realize through the control command that imaging device sends through bus.A kind of optional implementation is shown in Fig. 1 b: waking up the consumable chip stage, imaging device is used to wake up said target consumable chip through the control command of the address information that comprises the target consumable chip of bus transmission; After imaging device receives the response of target consumable chip, can send address information that comprises the target consumable chip and the control command of reading and writing control information through bus, be used for said target consumable chip is carried out read-write operation.Consumable chip is read and write in the another kind of optional implementation of control; Imaging device can be after the response that receives the target consumable chip; Only comprise the control command of reading and writing control information to the transmission of target consumable chip, the target consumable chip carries out read-write operation according to this control command; After the imaging device was accomplished the read-write control to this target consumable chip, imaging device can transmit reset signal on bus, and each consumable chip carries out reset operation according to reset signal, and prepared to communicate by letter with imaging device next time; Maybe after the imaging device was accomplished the read-write control to this target consumable chip, imaging device can carry out the electrification reset operation through powering on once more of chip being made consumable chip, and prepare to communicate by letter with imaging device next time to the chip power down on bus; When the imaging device need be read and write control to another consumable chip, chip reset after sending the target address information of another consumable chip, bus is repeated above-mentioned communication process.
Each consumable chip 2 is provided with a charging control circuit 3.Concrete, each consumable chip comprises consumable chip main body and charging control circuit, said consumable chip main body is connected with said charging control circuit.In specific embodiment, the structure of said charging control circuit is different.
Embodiment one
The structure of the charging control circuit that present embodiment provides is as shown in Figure 2, comprising: electricity accumulating unit 31, acquisition module 32, comparison module 33 and control module 34; Acquisition module 32, comparison module 33, control module 34 and electricity accumulating unit 31 are connected successively.
In a kind of optional implementation, when control module 34 is used in said first identification information and said second identification information coupling, said electricity accumulating unit is charged; Otherwise, stop said electricity accumulating unit is charged.
In the another kind of optional implementation, when control module 34 is used in said first identification information and said second identification information coupling, controls said current limliting unit and import first electric current, so that said electricity accumulating unit is charged normal to said electricity accumulating unit; Otherwise; Break off being electrically connected between said current limliting unit and the said electricity accumulating unit; Said electricity accumulating unit is charged stopping, perhaps, control said current limliting unit and import second electric current to said electricity accumulating unit; Said electricity accumulating unit is carried out the speed limit charging, said second electric current is less than said first electric current.Need to prove that said " charging normal " and " speed limit charging " is merely the statement of two kinds of charged states of electricity accumulating unit.When electric current was like first electric current greatly to the electricity accumulating unit input, the charging rate of electricity accumulating unit was very fast; When importing less electric current like second electric current to electricity accumulating unit, the charging rate of electricity accumulating unit is slower; Therefore, the present invention is expressed as the former electricity accumulating unit is charged normal, and correspondingly, the latter is represented carry out the speed limit charging for electricity accumulating unit; Hereinafter repeats no more to this.
The flow process of the charge control method of above-mentioned charging control circuit is as shown in Figure 3, comprising:
Step 31: obtain the control command that imaging device sends through bus; Said control command comprises first identification information; Said first identification information is corresponding with the target consumable chip that said control command is pointed to.
The obtain manner of said control command is very flexible, for example: can be by the acquisition module of charging control circuit, directly the COM1 through itself and imaging device receives said control command; Perhaps, after said control command can be received by the consumable chip main body that is connected with this charging control circuit, be transmitted to the acquisition module of this charging control circuit.
Step 32: more said first identification information and second identification information that prestores.
Step 33: according to comparative result to the control of charging of said electricity accumulating unit.
In a kind of optional implementation, above-mentioned steps 33 specifically can be: when said first identification information and said second identification information coupling, said electricity accumulating unit is charged; Otherwise, stop said electricity accumulating unit is charged.
In the another kind of optional implementation; Above-mentioned steps 33 specifically can be: when control module 34 is used in said first identification information and said second identification information coupling; Control said current limliting unit and import first electric current, so that said electricity accumulating unit is charged normal to said electricity accumulating unit; Otherwise; Break off being electrically connected between said current limliting unit and the said electricity accumulating unit; Said electricity accumulating unit is charged stopping, perhaps, control said current limliting unit and import second electric current to said electricity accumulating unit; Said electricity accumulating unit is carried out the speed limit charging, said second electric current is less than said first electric current.
Said first identification information can be information such as the address information, chip id of said target consumable chip; Said second identification information can be information such as the address information, chip id of the consumable chip at this charging control circuit place.This charging control circuit is resolved the said control command of obtaining; Obtain said first identification information that said control command comprises; And said first identification information and said second identification information compared, whether be said target consumable chip with the consumable chip of confirming this charging circuit place.
If said first identification information and said second identification information coupling; The consumable chip that this charging control circuit place then is described is said target consumable chip; This consumable chip is waken up; Respond said control command and carry out corresponding read-write operation, this moment, charging control circuit then charged through the electricity accumulating unit of charge power supply to this charging control circuit; The electricity that this electricity accumulating unit filled is used to connected consumable chip stand-by power supply is provided.A kind of optional application scenarios is for example: in the imaging device power up, the consumable chip that is connected with this electricity accumulating unit responds said control command and carries out read-write operation, and the sram cache that on this consumable chip, is provided with has data; When the power down of imaging device; This electricity accumulating unit is that connected consumable chip provides stand-by power supply; Make EEPROM or the FLASH that this consumable chip can be provided with the data conversion storage of sram cache on it, thereby realize the non-volatile memories of data at lower cost.
If said first identification information and said second identification information do not match; The consumable chip at this charging control circuit place is not said target consumable chip; Then stop the electricity accumulating unit of this charging control circuit is charged, the consumable chip at this charging control circuit place gets into resting state.
This shows; The present embodiment charging control circuit is obtaining imaging device after the control command that bus is sent; Second identification information of the consumable chip at first identification information that this control command is comprised and self place, makes when the consumable chip that belongs to when this charging control circuit is the target control chip of said control command sensing to the electricity accumulating unit control of charging according to comparative result; Electricity accumulating unit is charged; Otherwise, stop electricity accumulating unit being charged, saved power consumption thus to the electricity accumulating unit charging; Also reduced because of the pressure drop of electricity accumulating unit charging, guaranteed the proper communication between target consumable chip and the imaging device the supply voltage generation of imaging device.In addition, present embodiment carries out selective charge control through charging control circuit, helps charge power supply concentrated being used for a certain electricity accumulating unit and charging, and has improved the charging rate of electricity accumulating unit and the utilization rate of electrical of charge power supply thus.
Embodiment two
The structure of the charging control circuit that present embodiment provides is as shown in Figure 4, and the difference of itself and Fig. 2 comprises: said control module 34 can comprise: current limliting unit 341 and control unit 342.
The flow process of the charge control method of above-mentioned charging control circuit is as shown in Figure 5, comprising:
Step 51: obtain the control command that imaging device sends through bus; Said control command comprises first identification information; Said first identification information is corresponding with the target consumable chip that said control command is pointed to.
Step 52: more said first identification information and second identification information that prestores, if said first identification information and said second identification information coupling, execution in step 53; Otherwise, execution in step 54.
Step 53: being electrically connected between gating current limliting unit and the said electricity accumulating unit, and control said current limliting unit and import first electric current to said electricity accumulating unit, so that said electricity accumulating unit is charged normal; Finish.
Step 54: break off being electrically connected between said current limliting unit and the said electricity accumulating unit, said electricity accumulating unit is charged stopping; Perhaps, keep being electrically connected between current limliting unit and the said electricity accumulating unit, import second electric current but control said current limliting unit to said electricity accumulating unit, with to said electricity accumulating unit speed limit charging, wherein, said first electric current is greater than said second electric current; Finish.
When charging control circuit receives said imaging device when bus is sent a new control command, can repeat above-mentioned steps 51-54.
Present embodiment can limit the pressure drop that the imaging device power supply is produced because of the electricity accumulating unit charging through the current limliting unit is set on the basis of realizing embodiment one similar technique effect; In addition, present embodiment is according to the comparative result gating or break off being electrically connected between current limliting unit and the electricity accumulating unit, perhaps, to electricity accumulating unit bigger or less electric current is provided according to comparative result, thus the charged state of control electricity accumulating unit, and implementation method is simple.The concrete structure of said current limliting unit is unrestricted, and the optional embodiment in the face of the current limliting unit describes down.
Embodiment three
The structure of the charging control circuit that present embodiment provides comprises with the difference of Fig. 4: said current limliting unit comprises: parallelly connected a plurality of current limliting electronic circuits; Each current limliting electronic circuit comprises: current-limiting resistance and selector switch, said current-limiting resistance are serially connected between charge power supply and the said selector switch, and said selector switch is serially connected between said current-limiting resistance and the said electricity accumulating unit.Said control unit; Comprise that with the said current limliting electronic circuit of said comparison module and each said selector switch is connected respectively; Specifically be used for when said first identification information and said second identification information coupling; The selector switch of respectively closed each current limliting electronic circuit comes, so that said electricity accumulating unit is charged; Otherwise, break off the selector switch of each current limliting electronic circuit respectively, said electricity accumulating unit is charged stopping.Optional, said control unit also was used for before said acquisition module initially obtains said control command, and the selector switch of closing section current limliting electronic circuit is to carry out the speed limit charging to said electricity accumulating unit.
Might as well comprise that two current limliting electronic circuits are example with said current limliting unit below, the technical scheme of present embodiment is elaborated.Charging control circuit as shown in Figure 6 is on circuit base shown in Figure 2, and current limliting unit 341 further comprises the first current limliting electronic circuit and the second current limliting electronic circuit.The first current limliting electronic circuit comprises: the first current-limiting resistance R1 and the first selector switch S1; The second current limliting electronic circuit comprises: the second current-limiting resistance R2 and the second selector switch S2.The parallel connection point of the first current-limiting resistance R1 and the second current-limiting resistance R2 is connected with charge power supply 35.
Suppose in the application scenarios shown in Fig. 1 a that adopt at least two consumable chips that bus mode communicates by letter with imaging device, each consumable chip all is integrated with charging control circuit as shown in Figure 6; The charge control method of arbitrary charging control circuit is as shown in Figure 7.Present embodiment is to be that example describes with address information as the identification information of consumable chip.
Step 71: the acquisition module of charging control circuit initially obtains before the said control command; The selector switch of control unit closing section current limliting electronic circuit; Like the closed first selector switch S1 and break off the second selector switch S2, said electricity accumulating unit is carried out the speed limit charging.
Step 72: the acquisition module of charging control circuit obtains the control command that imaging device sends through bus, and this control command comprises first address information of target consumable chip.
Step 73: more said first address information of the comparison module of charging control circuit and second address information that prestores, if first address information and second address information coupling, execution in step 74; Otherwise, execution in step 75; Wherein, said second address information is the address information of the consumable chip at this charging control circuit place.
Step 74: the selector switch of closed each the current limliting electronic circuit of the control unit of charging control circuit, like the closed first selector switch S1 of difference and the second selector switch S2, said electricity accumulating unit is carried out the full speed charging; Finish.
Step 75: the control unit of charging control circuit breaks off the selector switch of each current limliting electronic circuit, as breaking off the first selector switch S1 and the second selector switch S2 respectively, said electricity accumulating unit is charged stopping; Finish.
The total resistance of current-limiting resistance of above-mentioned steps 74 current limliting unit; The total resistance of current-limiting resistance less than above-mentioned steps 71 current limliting unit; That is to say; The charging current that above-mentioned steps 74 charge power supplies provide to electricity accumulating unit through the current limliting unit, the charging current that provides to electricity accumulating unit through the current limliting unit greater than above-mentioned steps 71 charge power supplies.Therefore, the charging rate of above-mentioned steps 74 electricity accumulating units is higher than above-mentioned steps 71.Above-mentioned steps 75 is equivalent to electricity accumulating unit charging current is not provided, and makes electricity accumulating unit be in thus and stops charged state.In the application scenarios shown in Fig. 1 a, in each consumable chip that the imaging device bus is connected, the electric current of target consumable chip and non-target consumable chip Storage Unit separately changes example, and is as shown in Figure 8.
When charging control circuit receives said imaging device when bus is sent a new control command, can repeat above-mentioned steps 71-75.
Present embodiment can be through being provided with a plurality of current limliting electronic circuits on the basis of realizing embodiment two similar technique effects in the current limliting unit.Before charging control circuit initially obtains said control command, its electricity accumulating unit is carried out the speed limit charging on the one hand.On the other hand after charging control circuit obtains said control command: if this charging control circuit place consumable chip is the target consumable chip; Increase electric current through the total resistance of the current-limiting resistance that reduces the current limliting unit; To improve the charging current of electricity accumulating unit, realize full speed charging to electricity accumulating unit; If this charging control circuit place consumable chip is not the target consumable chip; Then stop said electricity accumulating unit is charged; Be used for a certain electricity accumulating unit and charge thereby help charge power supply concentrated, to have improved the charging rate of electricity accumulating unit and the utilization rate of electrical of charge power supply thus.
One of ordinary skill in the art will appreciate that above-mentioned steps 71 is an optional step, a kind of implementation of replacement for example; The initial state of charge of electricity accumulating unit is for stopping charged state; Under this situation, the acquisition module of charging control circuit initially obtains before the said control command, and control unit breaks off the selector switch of each current limliting electronic circuit respectively; As break off the first selector switch S1 and the second selector switch S2 respectively, charge to stop said electricity accumulating unit.The charge control method of charging control circuit after obtaining said control command, 72-75 is similar with above-mentioned steps, repeats no more at this.
Those of ordinary skills it is also understood that; Above-mentioned steps 75 is an optional step; A kind of implementation of replacement for example, the selector switch of the control unit breaking part current limliting electronic circuit of charging control circuit, as break off the second selector switch S2 but the closed first selector switch S1; Be equivalent to reduce charging current, control electricity accumulating unit thus and carry out the speed limit charging the single input of electric power storage.
Embodiment four
The structure of the charging control circuit that present embodiment provides is as shown in Figure 4, and the difference of itself and embodiment two is that the function that said control unit 342 is realized is different.
In the present embodiment, when said control unit 342 was used in said first identification information and said second identification information coupling, being electrically connected between the said current limliting of gating unit 341 and the said electricity accumulating unit 31 was to charge to said electricity accumulating unit 31; Otherwise, break off being electrically connected between said current limliting unit 341 and the said electricity accumulating unit 31, said electricity accumulating unit 31 is charged stopping.Be appreciated that those of ordinary skills can come to realize respectively that said control unit 342 needs the various functions that realize through separating a plurality of unit that are provided with according to actual needs.In for example a kind of optional implementation, said control unit 342 can comprise: first control unit and second control unit.Said first control unit comprises that with the said current limliting electronic circuit of said comparison module and each said selector switch is connected respectively; Specifically be used for when said first identification information and said second identification information coupling; The selector switch of respectively closed each current limliting electronic circuit is to charge normal said electricity accumulating unit; Otherwise, break off the selector switch of each current limliting electronic circuit respectively, said electricity accumulating unit is charged stopping, perhaps, the selector switch of breaking part current limliting electronic circuit is to carry out the speed limit charging to said electricity accumulating unit.Said second control unit comprises that with the said current limliting electronic circuit of said comparison module and each said selector switch is connected respectively; Be used for before said acquisition module initially obtains said control command; The selector switch of closing section current limliting electronic circuit is to carry out the speed limit charging to said electricity accumulating unit.
The flow process of the charge control method of above-mentioned charging control circuit is as shown in Figure 9, comprising:
Step 91: obtain the control command that imaging device sends through bus; Said control command comprises first identification information; Said first identification information is corresponding with the target consumable chip that said control command is pointed to.
Step 92: more said first identification information and second identification information that prestores, if said first identification information and said second identification information coupling, execution in step 93; Otherwise, execution in step 94.
Step 93: being electrically connected between gating current limliting unit and the said electricity accumulating unit, with to said electricity accumulating unit charging; Finish.
Step 94: break off being electrically connected between said current limliting unit and the said electricity accumulating unit, said electricity accumulating unit is charged stopping; Finish.
When charging control circuit receives said imaging device when bus is sent a new control command, can repeat above-mentioned steps 91-94.
Present embodiment can limit the pressure drop that the imaging device power supply is produced because of the electricity accumulating unit charging through the current limliting unit is set on the basis of realizing embodiment one similar technique effect; In addition, present embodiment is according to the comparative result gating or break off being electrically connected between current limliting unit and the electricity accumulating unit, thus the charged state of control electricity accumulating unit, and implementation method is simple.The concrete structure of said current limliting unit is unrestricted, and the optional embodiment in the face of the current limliting unit describes down.
Embodiment five
The structure of the charging control circuit that present embodiment provides is shown in figure 10, and the difference of itself and Fig. 4 comprises: said current limliting unit 341 comprises: current-limiting resistance R3 and selector switch S3; Current-limiting resistance R3 is serially connected between charge power supply 35 and the selector switch S3, and selector switch S3 is serially connected between current-limiting resistance R3 and the electricity accumulating unit 31; Said control unit 342 specifically is used for when said first identification information and said second identification information coupling, and closed said selector switch is to charge to said electricity accumulating unit; Otherwise, break off said selector switch, said electricity accumulating unit is charged stopping.
Suppose in the application scenarios shown in Fig. 1 a that adopt at least two consumable chips that bus mode communicates by letter with imaging device, each consumable chip all is integrated with charging control circuit shown in figure 10; The charge control method of arbitrary charging control circuit is shown in figure 11.Present embodiment is to be that example describes with address information as the identification information of consumable chip.
Step 111: the acquisition module of charging control circuit initially obtains before the said control command, and control unit breaks off the selector switch of current limliting unit, as breaking off selector switch S3, charges to stop said electricity accumulating unit.
This step is an optional step.
Step 112: the acquisition module of charging control circuit obtains the control command that imaging device sends through bus, and this control command comprises first address information of target consumable chip.
Step 113: more said first address information of the comparison module of charging control circuit and second address information that prestores, if first address information and second address information coupling, execution in step 114; Otherwise, execution in step 115; Wherein, said second address information is the address information of the consumable chip at this charging control circuit place.
Step 114: the selector switch of the closed current limliting of the control unit of charging control circuit unit, like closed selector switch S3, so that said electricity accumulating unit is charged; Finish.
Step 115: the control unit of charging control circuit breaks off the selector switch of current limliting unit, as breaking off selector switch S3, said electricity accumulating unit is charged stopping; Finish.
When charging control circuit receives said imaging device when bus is sent a new control command, can repeat above-mentioned steps 111-115.
In the application scenarios shown in Fig. 1 a, in each consumable chip that the imaging device bus is connected, the electric current of target consumable chip and non-target consumable chip Storage Unit separately changes example, and is shown in figure 12.
Present embodiment provides a kind of simple current limliting cellular construction on the basis of realizing embodiment four similar technique effects, limit the pressure drop that the imaging device power supply is produced because of the electricity accumulating unit charging; In addition, present embodiment is according to the comparative result gating or break off being electrically connected between the selector switch and electricity accumulating unit in the current limliting unit, thus the charged state of control electricity accumulating unit, and implementation method is simple.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, do not have the part that details among certain embodiment, can be referring to the associated description of other embodiment.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be accomplished through the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above each embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although the present invention has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (14)
1. a charging control circuit is characterized in that, comprising:
The acquisition module, comparison module, control module and the electricity accumulating unit that connect successively;
Said electricity accumulating unit is used to connected consumable chip stand-by power supply is provided;
Said acquisition module is used to obtain the control command that imaging device sends through bus; Said control command comprises first identification information; Said first identification information is corresponding with the target consumable chip that said control command is pointed to;
Said comparison module is used for more said first identification information and second identification information that prestores; Said second identification information is corresponding with the consumable chip that said electricity accumulating unit connects;
Said control module is used for according to comparative result the control of charging of said electricity accumulating unit.
2. circuit according to claim 1 is characterized in that, said control module comprises:
The current limliting unit is serially connected between charge power supply and the said electricity accumulating unit;
Control unit is connected with said comparison module with said current limliting unit respectively, is used for when said first identification information and said second identification information coupling, and being electrically connected between the said current limliting of gating unit and the said electricity accumulating unit is to charge to said electricity accumulating unit; Otherwise, break off being electrically connected between said current limliting unit and the said electricity accumulating unit, said electricity accumulating unit is charged stopping.
3. circuit according to claim 2 is characterized in that,
Said current limliting unit comprises: current-limiting resistance and selector switch; Said current-limiting resistance is serially connected between charge power supply and the said selector switch, and said selector switch is serially connected between said current-limiting resistance and the said electricity accumulating unit;
Said control unit is connected with said selector switch with said comparison module respectively, specifically is used for when said first identification information and said second identification information coupling, and closed said selector switch is to charge to said electricity accumulating unit; Otherwise, break off said selector switch, said electricity accumulating unit is charged stopping.
4. circuit according to claim 1 is characterized in that, said control module comprises:
The current limliting unit is serially connected between charge power supply and the said electricity accumulating unit;
Control unit; Be connected with said comparison module with said current limliting unit respectively; Be used for when said first identification information and said second identification information coupling, controlling said current limliting unit and importing first electric current, so that said electricity accumulating unit is charged normal to said electricity accumulating unit; Otherwise; Break off being electrically connected between said current limliting unit and the said electricity accumulating unit; Said electricity accumulating unit is charged stopping, perhaps, control said current limliting unit and import second electric current to said electricity accumulating unit; Said electricity accumulating unit is carried out the speed limit charging, said second electric current is less than said first electric current.
5. circuit according to claim 4 is characterized in that,
Said current limliting unit comprises: a plurality of current limliting electronic circuits of parallel connection; Each current limliting electronic circuit comprises: current-limiting resistance and selector switch, said current-limiting resistance are serially connected between charge power supply and the said selector switch, and said selector switch is serially connected between said current-limiting resistance and the said electricity accumulating unit;
Said control unit; Comprise that with the said current limliting electronic circuit of said comparison module and each said selector switch is connected respectively; Specifically be used for when said first identification information and said second identification information coupling; The selector switch of respectively closed each current limliting electronic circuit is to charge normal said electricity accumulating unit; Otherwise, break off the selector switch of each current limliting electronic circuit respectively, said electricity accumulating unit is charged stopping, perhaps, the selector switch of breaking part current limliting electronic circuit is to carry out the speed limit charging to said electricity accumulating unit.
6. circuit according to claim 5 is characterized in that,
Said control unit also is used for, and before said acquisition module initially obtained said control command, the selector switch of closing section current limliting electronic circuit was to carry out the speed limit charging to said electricity accumulating unit.
7. a consumable chip comprises the consumable chip main body, it is characterized in that, also comprises:
Like the arbitrary described charging control circuit of claim 1-6;
Said charging control circuit is connected with said consumable chip main body.
8. an imaging system comprises imaging device, it is characterized in that, also comprises:
At least two consumable chips as claimed in claim 7;
Each said consumable chip and said imaging device are based on bus communication.
9. a charge control method is characterized in that, comprising:
Obtain the control command that imaging device sends through bus; Said control command comprises first identification information; Said first identification information is corresponding with the target consumable chip that said control command is pointed to;
More said first identification information and second identification information that prestores;
According to comparative result to the control of charging of said electricity accumulating unit.
10. method according to claim 9 is characterized in that, said according to comparative result to the control of charging of said electricity accumulating unit, comprising:
When said first identification information and said second identification information coupling, being electrically connected between gating current limliting unit and the said electricity accumulating unit is to charge to said electricity accumulating unit; Otherwise, break off being electrically connected between said current limliting unit and the said electricity accumulating unit, said electricity accumulating unit is charged stopping; Said current limliting unit strings is connected between charge power supply and the said electricity accumulating unit.
11. method according to claim 10 is characterized in that,
Said current limliting unit comprises: current-limiting resistance and selector switch; Said current-limiting resistance is serially connected between charge power supply and the said selector switch, and said selector switch is serially connected between said current-limiting resistance and the said electricity accumulating unit;
Said according to comparative result to the control of charging of said electricity accumulating unit, comprising: when said first identification information and said second identification information coupling, closed said selector switch is with to said electricity accumulating unit charging; Otherwise, break off said selector switch, said electricity accumulating unit is charged stopping.
12. method according to claim 9 is characterized in that, said according to comparative result to the control of charging of said electricity accumulating unit, comprising:
When said first identification information and said second identification information coupling, control said current limliting unit and import first electric current, so that said electricity accumulating unit is charged normal to said electricity accumulating unit; Otherwise; Break off being electrically connected between said current limliting unit and the said electricity accumulating unit; Said electricity accumulating unit is charged stopping, perhaps, control said current limliting unit and import second electric current to said electricity accumulating unit; Said electricity accumulating unit is carried out the speed limit charging, said second electric current is less than said first electric current.
13. method according to claim 12 is characterized in that,
Said current limliting unit comprises: a plurality of current limliting electronic circuits of parallel connection; Each current limliting electronic circuit comprises: current-limiting resistance and selector switch, said current-limiting resistance are serially connected between charge power supply and the said selector switch, and said selector switch is serially connected between said current-limiting resistance and the said electricity accumulating unit;
When said first identification information and said second identification information coupling, control said current limliting unit and import first electric current, so that said electricity accumulating unit is charged normal to said electricity accumulating unit; Otherwise, break off being electrically connected between said current limliting unit and the said electricity accumulating unit, said electricity accumulating unit is charged stopping; Perhaps; Control said current limliting unit and import second electric current,, comprising said electricity accumulating unit is carried out the speed limit charging to said electricity accumulating unit:
When said first identification information and said second identification information coupling, the selector switch of respectively closed each current limliting electronic circuit is to charge normal said electricity accumulating unit; Otherwise, break off the selector switch of each current limliting electronic circuit respectively, said electricity accumulating unit is charged stopping, perhaps, the selector switch of breaking part current limliting electronic circuit is to carry out the speed limit charging to said electricity accumulating unit.
14. method according to claim 13 is characterized in that, before the control command that bus is sent, said method also comprises at the said imaging device that obtains:
The selector switch of closing section current limliting electronic circuit is to carry out the speed limit charging to said electricity accumulating unit.
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| CN201210011987.8A CN102545334B (en) | 2012-01-13 | 2012-01-13 | Charge control circuit and method, consumable chip and imaging system |
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| CN201210011987.8A CN102545334B (en) | 2012-01-13 | 2012-01-13 | Charge control circuit and method, consumable chip and imaging system |
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