CN107577444A - The synchronous transfer circuit and synchronous method of printer compatible chip - Google Patents
The synchronous transfer circuit and synchronous method of printer compatible chip Download PDFInfo
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- CN107577444A CN107577444A CN201710984894.6A CN201710984894A CN107577444A CN 107577444 A CN107577444 A CN 107577444A CN 201710984894 A CN201710984894 A CN 201710984894A CN 107577444 A CN107577444 A CN 107577444A
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- microprocessor
- chip
- mcu
- printer
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 34
- 238000012546 transfer Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 13
- 238000012795 verification Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 10
- 238000007639 printing Methods 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 9
- 238000003860 storage Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
It is related to a kind of synchronous transfer circuit of printer compatible chip before this hair, it includes a microprocessor (MCU) and is arranged between printer side and genuine chip, the clock line (SCLK) of the wherein printer side is connected in parallel to the microprocessor (MCU) and the clock pin position of the genuine chip, and the data wire (SDA) of the printer side is connected to the data pin position that the microprocessor (MCU) is connected to the genuine chip via the microprocessor (MCU) again.
Description
Technical field
The present invention is related to the synchronous transfer circuit and synchronous method of a kind of printer compatible chip, particularly relates to a kind of order
Printer compatible chip is ordered to save the synchronous transfer of the printer compatible chip of transmission time with the processing of genuine chip synchronization
Circuit and synchronous method.
Formerly in technology
The communications protocol of printer covers a variety of known or unknown agreements, and I is included in known agreement2C(Inter-
Integrated Circuit) communications protocol, SPI communications protocol and wide-to-narrow ratio communications protocol etc., these agreements are profits
It is (following according to (data) pin position with one or more frequency (clock) pin positions (hereinafter known as SCLK) and one or more numbers of elements
It is commonly referred to as SDA) transmission signal, complete data sending and receiving using single of pin position collaboration or a plurality of master and slave devices.
At present on the market, printer production firm has used encryption chip to maintain the profit of enterprise on print cartridge, and
Special storage element is set in encryption chip, and the data in the storage element can not record any data after overflowing, profit
Prevent other people from cracking chip or the used chip of recycling in manner just described.Due to above-mentioned situation, cause consumptive material
Use cannot be reproduced, while compatible consumptive material manufacturer cannot also produce generally applicable consumptive material so that printer manufacturer is monopolized
Market, the competing industry competition of limitation, the consumptive material for causing consumer that other can not be selected more to meet self-demand.
For it is above-mentioned the problem of, feasible mode is coordinates genuine chip to set a compatible chip in addition in the market,
Verified using genuine chip, and the function of data storage is performed using compatible chip substitution genuine chip.Specifically, mesh
The preceding visible mode of in the market is to install a compatible chip additional between printer and genuine chip, when printer, which is sent out, orders,
Compatible chip receives all data of the printer, then differentiates whether data content oneself will respond or be responded by genuine chip
(checking), compatible chip voluntarily replys printer if it oneself can respond, and if desired genuine chip responds, then the number received
According to genuine chip, and the key withdrawal by genuine chip after treated is sent to, printer is resent to.
Only, above-mentioned transmission means is required to be handled in advance by compatible chip, and signal can be sent to printing by the beginning
Generator terminal or genuine chip, this can cause the delay of transmission, in addition, the first time checking of printer is due to must be first via compatible core
Piece is handled and is sent to the genuine chip of rear end, thus checking for the first time certainly will be bound to failure and must carry out it is secondary with
On checking, thus add twice or even more than twice of transmission time.
The content of the invention
The main object of the present invention, when being verified in solving known techniques by genuine chip, due to compatible core
Piece can not be synchronous with genuine chip, causes to increase the missing of twice or even more than twice transmission time.
To reach above-mentioned purpose, the present invention provides a kind of synchronous transfer circuit of printer compatible chip, including a micro- place
Reason device (MCU) is arranged between printer side and genuine chip, and it is micro- that the clock line (SCLK) of the wherein printer side is connected in parallel to this
The clock pin position of processor (MCU) and the genuine chip, the data wire (SDA) of the printer side are connected to the microprocessor
(MCU) the data pin position of the genuine chip is connected to via the microprocessor (MCU) again.
Further, the printer side via the clock line (SCLK) while transmits clock signal to the microprocessor
(MCU) and the genuine chip clock pin position to synchronize, the microprocessor (MCU) is triggered by the clock signal and connects this
The data pin position of data wire (SDA) and the genuine chip, and differentiate whether the order received is verification command, in the confirmation life
Make for verification command when, by the genuine chip by verify signal be back to the printer side.
Further, the printer side passes through the clock line (SCLK) and the data wire through communications protocol by both party
(SDA) transmitting-receiving order and data.
Further, for the microprocessor (MCU) when it is control command to differentiate the order, then the microprocessor (MCU) is disconnected
The connection of the data wire and the genuine chip at rear is opened, directly takes over being somebody's turn to do for the printer side via the microprocessor (MCU)
Data wire (SDA) receives and handles the control command, reads or writes to be performed based on the control command.
It is another object of the present invention to provide a kind of synchronous method of printer compatible chip, including：Simultaneously will printing
The clock signal feed-in microprocessor and genuine chip of generator terminal, to make the microprocessor and the genuine chip synchronization；The microprocessor
Device (MCU) triggers via the clock signal and connects the data wire (SDA) and the genuine chip；The microprocessor (MCU) via
The data wire (SDA) differentiates whether the order received is verification command；And when it is verification command to confirm the order, by this
Genuine chip will verify that signal is back to the printer side.
Further, the printer side passes through the clock line (SCLK) and the data wire through communications protocol by both party
(SDA) transmitting-receiving order and data.
Further, for the microprocessor (MCU) when it is control command to differentiate the order, then the microprocessor (MCU) is disconnected
The connection of the data wire and the genuine chip at rear is opened, the number of the printer side is directly taken over via the microprocessor (MCU)
Received according to line (SDA) and handle the control command, read or write to be performed based on the control command.
Therefore the present invention has the advantage that effect compared with known techniques：The tandem of the present invention can shorten data
Transmission time, the running time allowed on whole circuit is identical with the state not concatenated, allows printer and genuine chip to reach synchronous
The effect of transmission.
Brief description of the drawings
Fig. 1, it is the block schematic diagram (one) of the synchronous transfer circuit of printer compatible chip of the present invention.
Fig. 2, it is the block schematic diagram (two) of the synchronous transfer circuit of printer compatible chip of the present invention.
Fig. 3, it is the schematic flow sheet of the synchronous method of printer compatible chip of the present invention.
Symbol description
100 synchronous transfer circuits
10 print cartridges
20 printer sides
21 clock lines
22 data wires
11 microprocessors
111 clock pin positions
112A data pins position
112B data pins position
12 genuine chips
121 clock pin positions
122 data pin positions
Step S01- steps S06
Embodiment
Detailed description for the present invention and technology contents, now just schema is coordinated to be described as follows.Furthermore the schema in the present invention,
For convenience of explanation, its ratio may not shine actual ratio and draw, and such schema and its ratio simultaneously are not used to limit the scope of the present invention,
Chat in advance herein bright.
One is not limited in heretofore described clock line, clock pin position, data wire, data pin position, such as clock
Line, clock pin position, data wire, the expansion of data pin bit quantity or increase belong to the scope of the invention to be protected.
A preferable embodiment aspect is lifted below for the present invention to illustrate.It is please compatible referring initially to " Fig. 1 ", printer of the present invention
The block schematic diagram (one) of the synchronous transfer circuit of chip, as shown in the figure：
The present invention provides a kind of synchronous transfer circuit 100 of printer compatible chip, is installed for print cartridge 10, and in print cartridge 10
Output/input terminal with printer side 20 when printer side 20 forms synchronous transfer circuit.Described synchronous transfer circuit is main
Including a microprocessor 11 (Micro Control Unit, MCU), the microprocessor 11 is arranged at printer side 20 and genuine
Between chip 12, series loop is formed with the printer side 20 and the genuine chip 12.
Specifically, described microprocessor 11 forms single module with the genuine chip 12 and circuit, is installed on print cartridge
On 10, the electrical contact (or connector) that is electrically incorporated on the print cartridge 10, when the print cartridge 10 is installed on printer side 20, ink
Electrical contact on box 10 and the firing point of the printer side 20 are electrically connected with, thereby formed with the circuit of printer side 20 described in
Series loop.
Described microprocessor 11 is connected to storage element, to access and perform the data in the storage element.Yu Ben
In preferable embodiment aspect, structure is a processor to described microprocessor 11 altogether with the storage element, is not limited in the present invention
System.
Described genuine chip 12 is the chip produced of genuine, and the genuine chip 12 is corresponding with the printer side 20, when connecing
When receiving the validating message of the printer side 20, the genuine chip 12 can be carried out according to cryptographic check algorithm based on the validating message
Calculate, the cryptographic check result obtained after calculating is back to printer side 20 to complete to verify via microprocessor 11.
Wherein, the clock line 21 (SCLK) of the printer side 20 be connected in parallel to the microprocessor 11 and the genuine chip 12 when
Clock pin position 111,121, using makes the microprocessor 11 and the genuine chip 12 synchronous；The data wire 22 of the printer side 20
(SDA) the data pin position 112A for being connected to the microprocessor 11 is connected to this via the data pin position 112B of the microprocessor 11 again
The data pin position 122 of genuine chip 12, thereby form synchronous transfer circuit.
Coordinate schema to be described in detail below for the operation principle of the present invention, refer to " Fig. 2 ", for present invention printing
The block schematic diagram (two) of the synchronous transfer circuit of machine compatible chip, as shown in the figure：
The clock line 21 (SCLK) of the printer side 20 is connected in parallel to the microprocessor 11 and the clock pin position of the genuine chip 12
111st, 121, thus the printer side 20 can via clock line 21 (SCLK) and meanwhile transmit clock signal to the microprocessor 11 and
To synchronize, the microprocessor 11 is triggered by clock signal and connects the number for the clock pin position 111,121 of the genuine chip 12
According to the data pin position 122 of line 22 (SDA) and the genuine chip 12.During printer side 20 operates, it is possible to can transmit and test
Card order is to print cartridge 10 to be verified, now, the microprocessor 11 differentiates the order received via the data wire 22 (SDA)
Whether it is verification command.When it is verification command that microprocessor 11, which confirms the order, directly checking is interrogated by the genuine chip 12
Number it is back to the printer side 20；When the microprocessor 11 is when it is control command to differentiate the order, the microprocessor 11 disconnects
The connection of data wire 22 (SDA) and genuine chip 12, directly by the data wire 22 of the adapter printer side 20 of microprocessor 11
(SDA) receive and handle control command, read or write to be performed based on the control command.
Wherein, the printer side 20 passes through the clock line 21 (SCLK) and data wire 22 through communications protocol by both party
(SDA) transmitting-receiving order and data, via the clock line 21 (SCLK) and data wire 22 (SDA) collaboration be single or a plurality of masters,
Worked from device.
Illustrated below for the synchronous method of printer compatible chip of the present invention, refer to " Fig. 3 ", beaten for the present invention
The schematic flow sheet of the synchronous method of print machine compatible chip, as shown in the figure：
When print cartridge 10 is installed on printer side 20, printer side 20 is verified to print cartridge 10, and specific verification step is as follows：
Step S01, printer side 20 is started working, and now the printer side 20 via clock line 21 (SCLK) while transmits clock
Signal is to the clock pin position 111,121 of the microprocessor 11 and the genuine chip 12 to synchronize；The wherein printer side 20
Through communications protocol by both party through the clock line 21 (SCLK) and the data wire 22 (SDA) transmitting-receiving order and data.
Step S02, microprocessor 11 triggers via the clock signal and connects the data wire 22 (SDA) and the genuine chip
12 data pin position 122；
Step S03, printer side 20 communicates commands to the microprocessor 11 via data wire 22 (SDA)；
Step S04, the microprocessor 11 differentiates whether the order received is verification command via the data wire 22 (SDA), in
Confirm execution step S05 when received order is verification command, when it is not verification command to confirm received order,
Then perform step S06；
Step S05, when it is verification command to confirm the order, checking signal is directly back to by the printing by the genuine chip 12
Generator terminal 20；
Step S06, when confirming that the order is control command (that is, not being verification command), the turn-off data line of microprocessor 11
22 (SDA) and genuine chip 12 connection, the data wire 22 (SDA) of the printer side 20 is directly taken over by the microprocessor 11
Receive and handle control command, read or write to be performed based on the control command, to perform print job.
In summary, tandem of the invention can shorten data transmission period, the running time allowed on whole circuit
It is identical with the state not concatenated, allow printer and genuine chip reaches the effect of synchronous transfer.
The present invention is described in detail above, only as described above, is only a preferred embodiment of the invention,
When can not limit the scope implemented of the present invention with this, i.e., all equivalent changes and modifications made according to scope of the present invention patent,
In the patent covering scope that all should still belong to the present invention.
Claims (7)
1. a kind of synchronous transfer circuit of printer compatible chip, including a microprocessor (MCU) are arranged at printer side and original
Between factory's chip, it is characterised in that the clock line (SCLK) of the printer side is connected in parallel to the microprocessor (MCU) and the genuine core
The clock pin position of piece, the data wire (SDA) of the printer side are connected to the microprocessor (MCU), then via the microprocessor
(MCU) it is connected to the data pin position of the genuine chip.
2. the synchronous transfer circuit of the printer compatible chip as described in claim the 1st, it is characterised in that the printing
Generator terminal is via the clock line (SCLK) while transmits clock signal to the clock pin position of the microprocessor (MCU) and the genuine chip
To synchronize, the microprocessor (MCU) is triggered by the clock signal and connects the data wire (SDA) and the number of the genuine chip
According to pin position, and differentiate whether the order received is verification command, when it is verification command to confirm the order, by the genuine chip
Checking signal is back to the printer side.
3. the synchronous transfer circuit of the printer compatible chip as any one of claim the 1st to the 2nd, its
It is characterised by, the printer side is ordered through communications protocol by both party through the clock line (SCLK) and the data wire (SDA) transmitting-receiving
Order and data.
4. the synchronous transfer circuit of the printer compatible chip as any one of claim the 1st to the 2nd, its
It is characterised by, for the microprocessor (MCU) when it is control command to differentiate the order, then the microprocessor (MCU) disconnects the data
The connection of this of line and rear genuine chip, the data wire (SDA) of the printer side is directly taken over via the microprocessor (MCU)
Receive and handle the control command, read or write to be performed based on the control command.
5. a kind of synchronous method of printer compatible chip, including：
Simultaneously by the clock signal feed-in microprocessor (MCU) and genuine chip of printer side, with make the microprocessor (MCU) and
The genuine chip synchronization；
The microprocessor (MCU) triggers via the clock signal and connects the data wire (SDA) and the genuine chip；
The microprocessor (MCU) differentiates whether the order received is verification command via the data wire (SDA)；And
When it is verification command to confirm the order, it will verify that signal is back to the printer side by the genuine chip.
6. the synchronous method of the printer compatible chip as described in claim the 5th, it is characterised in that the printer side
Through communications protocol by both party through the clock line (SCLK) and the data wire (SDA) transmitting-receiving order and data.
7. the synchronous method of the printer compatible chip as any one of claim the 5th to the 6th, its feature
Be, the microprocessor (MCU) in differentiate the order be control command when, then the microprocessor (MCU) disconnect the data wire and
The connection of the genuine chip at rear, the data wire (SDA) that the printer side is directly taken over via the microprocessor (MCU) receive
And the control command is handled, read or write to be performed based on the control command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710984894.6A CN107577444A (en) | 2017-10-20 | 2017-10-20 | The synchronous transfer circuit and synchronous method of printer compatible chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710984894.6A CN107577444A (en) | 2017-10-20 | 2017-10-20 | The synchronous transfer circuit and synchronous method of printer compatible chip |
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| Publication Number | Publication Date |
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| CN107577444A true CN107577444A (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710984894.6A Pending CN107577444A (en) | 2017-10-20 | 2017-10-20 | The synchronous transfer circuit and synchronous method of printer compatible chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020151509A1 (en) * | 2019-01-22 | 2020-07-30 | 杭州旗捷科技有限公司 | Consumable chip, and consumable chip communication method |
| CN113392049A (en) * | 2020-02-26 | 2021-09-14 | 北京君正集成电路股份有限公司 | Chip system for transmitting ADC (analog to digital converter) acquired data by simulating i2c protocol |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020151509A1 (en) * | 2019-01-22 | 2020-07-30 | 杭州旗捷科技有限公司 | Consumable chip, and consumable chip communication method |
| CN113392049A (en) * | 2020-02-26 | 2021-09-14 | 北京君正集成电路股份有限公司 | Chip system for transmitting ADC (analog to digital converter) acquired data by simulating i2c protocol |
| CN113392049B (en) * | 2020-02-26 | 2023-10-31 | 北京君正集成电路股份有限公司 | Chip system for realizing transmission of ADC (analog to digital converter) acquisition data by simulating i2c protocol |
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