TWI667607B - A printer-compatible synchronous circuit and method thereof - Google Patents

Abstract

A printer compatible wafer synchronous transmission circuit, comprising a microprocessor (MCU) disposed between the printer end and the original wafer, wherein the printer clock line (SCLK) is connected in parallel to the micro processing (MCU) and the clock pin of the original chip, the data line (SDA) of the printer is connected to the microprocessor (MCU) and connected to the original chip via the microprocessor (MCU) Information pin.

Description

Printer synchronous chip transmission circuit and synchronization method

The invention relates to a synchronous transmission circuit and a synchronization method for a printer compatible wafer, in particular to a synchronous transmission circuit of a printer compatible wafer for synchronizing processing instructions of a printer compatible wafer with an original wafer to save transmission time. And synchronization methods.

The printer's communication protocol covers a variety of known or unknown protocols, including I ² C (Inter-Integrated Circuit) communication protocol, SPI communication protocol, and narrow-ratio communication protocol, etc., which are utilized in known protocols. One or more clock pins (hereinafter collectively referred to as SCLK) and one or more data pins (hereinafter collectively referred to as SDA) transmit signals, using the pin to cooperate with one or more The master and slave devices complete the data delivery.

At present, in order to maintain the profit of the enterprise, the printer manufacturer uses an encrypted chip on the ink cartridge and sets a special storage unit in the encrypted chip. After the data in the storage unit overflows, no data can be recorded. The above approach prevents others from cracking the wafer or reusing used wafers. by In the above situation, the consumables cannot be recycled, and the consumables manufacturers can't produce universal consumables, which makes the printer manufacturers monopolize the market and limit competition in competition, which makes consumers unable to choose others to be more in line with themselves. Consumables for demand.

In response to the above problems, it is currently feasible in the market to additionally provide a compatible chip in conjunction with the original wafer, verify the original wafer, and replace the original wafer with a compatible wafer to perform data storage. Specifically, the currently available method is to install a compatible chip between the printer and the original wafer. When the printer sends the command, the compatible chip receives all the data of the printer, and then discriminates the data. Whether the content should respond to itself or respond (verify) by the original chip. If it can respond by itself, the compatible chip will reply to the printer itself. If the original wafer response is required, the received data will be sent to the original wafer, and the original will be sent to the original wafer. The processed wafer is reclaimed and sent to the printer.

However, the above transmission methods need to be processed in advance by compatible wafers, and the signal can be transmitted to the printer end or the original wafer, which will cause delay in transmission. In addition, the first verification of the printer must be carried out first. Compatible with the wafer for processing and transfer to the original wafer at the back end, so the first verification will inevitably fail and must be verified more than twice, thus increasing the transmission time by a factor of two or more.

The main object of the present invention is to solve the problem in the prior art that when the original wafer is used for verification, the compatible wafer cannot be synchronized with the original wafer, and the transmission time is increased by two times or more.

In order to achieve the above object, the present invention provides a printer-compatible wafer synchronous transmission circuit, comprising a microprocessor (MCU) disposed between the printer end and the original wafer, wherein the printer end clock line (SCLK) is connected in parallel to the microprocessor (MCU) and the clock pin of the original chip, the data line (SDA) of the printer is connected to the microprocessor (MCU) and then via the microprocessor (MCU) is connected to the data pin of the original wafer.

Further, the printer end transmits the clock signal to the microprocessor (MCU) and the clock pin of the original wafer through the clock line (SCLK) for synchronization, the microprocessor (MCU) The trigger signal is triggered by the clock signal and the data pin (SDA) and the data pin of the original chip are determined, and it is determined whether the received command is a verification command, and when the command is confirmed as a verification command, the original factory The chip returns the verification signal to the printer.

Further, the printer end transmits and receives commands and data through the clock line (SCLK) and the data line (SDA) via the communication protocol of both parties.

Further, when the microprocessor (MCU) determines that the command is a control command, the microprocessor (MCU) disconnects the data line and the original wafer from the rear, directly via the microprocessor ( The MCU) receives the data line (SDA) at the printer end to receive and process the control command to perform a read or write based on the control command.

Another object of the present invention is to provide a printer compatible wafer synchronization method, comprising: simultaneously feeding a clock signal of a printer end into a microprocessor and an original wafer to make the microprocessor and the original wafer Synchronizing; the microprocessor (MCU) triggers and turns on the data line (SDA) and the original wafer via the clock signal; The MCU determines whether the received command is a verification command via the data line (SDA); and when the command is confirmed as a verification command, the verification signal is transmitted back to the printer end by the original chip.

Further, the printer end transmits and receives commands and data through the clock line (SCLK) and the data line (SDA) via the communication protocol of both parties.

Further, when the microprocessor (MCU) determines that the command is a control command, the microprocessor (MCU) disconnects the data line and the original wafer from the rear, directly via the microprocessor ( The MCU) takes over the data line (SDA) at the printer end to receive and process the control command to perform a read or write based on the control command.

Therefore, the present invention has the following advantageous effects compared to the prior art: the serial connection method of the present invention can shorten the data transmission time, so that the operation time on the entire line is the same as that of the unconnected state, so that the printer and the original factory The wafer achieves the effect of simultaneous transmission.

100‧‧‧Synchronous transmission circuit

10‧‧‧Ink 匣

20‧‧‧Printer end

21‧‧‧ clock line

22‧‧‧Information line

11‧‧‧Microprocessor

111‧‧‧clock position

112A‧‧‧Information pin

112B‧‧‧Information pin

12‧‧‧Original wafer

121‧‧‧clock position

122‧‧‧Information pin

Step S01-Step S06

FIG. 1 is a block diagram (1) of a synchronous transmission circuit of a printer compatible wafer of the present invention.

2 is a block diagram (2) of a synchronous transmission circuit of a printer compatible wafer of the present invention.

Fig. 3 is a flow chart showing the synchronization method of the printer compatible wafer of the present invention.

The detailed description and technical content of the present invention are now in conjunction with the schema. described as follows. In addition, the drawings in the present invention are for convenience of description, and the ratios thereof are not necessarily drawn to actual scales, and the drawings and their proportions are not intended to limit the scope of the present invention, and are described herein.

The clock line, the clock position, the data line, and the data pin described in the present invention are not limited to one, and the expansion or increase of the number of the clock line, the clock position, the data line, and the data position is It is within the scope of the invention to be protected.

Hereinafter, a preferred embodiment of the present invention will be described. Please refer to FIG. 1 first, which is a block diagram (1) of a synchronous transmission circuit of a printer compatible wafer of the present invention. As shown in the figure, the present invention provides a printer-compatible wafer synchronous transmission circuit 100 for use in a printer. On the ink cartridge 10, when the ink cartridge 10 is mounted on the printer end 20, the output terminal of the printer terminal 20 constitutes a synchronous transmission circuit. The synchronous transmission circuit mainly includes a microprocessor 11 (MCU), and the microprocessor 11 is disposed between the printer end 20 and the original wafer 12, and the printer terminal 20 and The original wafer 12 constitutes a series circuit.

Specifically, the microprocessor 11 is configured as a single module with the original wafer 12 and the circuit, and is mounted on the ink cartridge 10, and is electrically coupled to the electrical contact (or connector) of the ink cartridge 10. When the ink cartridge 10 is mounted on the printer end 20, the electrical contacts on the ink cartridge 10 are electrically connected to the conductive dots of the printer terminal 20, thereby electrically connecting the printer terminal 20 The series circuit is constructed.

The microprocessor 11 is connected to a storage unit for accessing and executing data in the storage unit. In the preferred embodiment, the micro processing The processor 11 is co-constructed with the storage unit as a processor, which is not limited in the present invention.

The original wafer 12 is an original wafer, and the original wafer 12 corresponds to the printer end 20. When receiving the verification message of the printer end 20, the original wafer 12 can be The calculation is performed based on the verification message according to the password verification algorithm, so that the password verification result obtained after the calculation is transmitted back to the printer terminal 20 via the microprocessor 11 to complete the verification.

The clock line 21 (SCLK) of the printer terminal 20 is connected in parallel to the microprocessor 11 and the clock pins 111 and 121 of the original wafer 12, so that the microprocessor 11 and the original factory The wafer 12 is synchronized; the data line 22 (SDA) of the printer end 20 is connected to the data pin 112A of the microprocessor 11 and then connected to the original wafer 12 via the data pin 112B of the microprocessor 11. The data pin 122 is thereby constructed as a synchronous transmission circuit.

The following is a detailed description of the working principle of the present invention with reference to the drawings. Please refer to FIG. 2, which is a block diagram (2) of the synchronous transmission circuit of the printer compatible wafer of the present invention, as shown in the figure: The clock line 21 (SCLK) of the terminal 20 is connected in parallel to the microprocessor 11 and the clock pin 111, 121 of the original wafer 12, so the printer terminal 20 can be connected via the clock line 21 (SCLK). Simultaneously transmitting a clock signal to the microprocessor 11 and the clock pin 111, 121 of the original wafer 12 for synchronization, the microprocessor 11 is triggered by the clock signal and turns on the data line 22 (SDA) and The data pin 122 of the original wafer 12 is used. During the operation of the printer end 20, it is possible to transmit a verification command to the ink cartridge 10 for verification. At this time, the microprocessor 11 discriminates the received data via the data line 22 (SDA). Whether the command is a verification command. When the microprocessor 11 confirms that the command is a verification command, the verification signal is directly transmitted back to the printer terminal 20 by the original wafer 12; when the microprocessor 11 determines that the command is a control command, The microprocessor 11 disconnects the data line 22 (SDA) from the original wafer 12, and directly receives and processes the control command from the data line 22 (SDA) of the printer terminal 20 by the microprocessor 11 to This control command performs a read or write.

The printer terminal 20 transmits and receives commands and data through the clock line 21 (SCLK) and the data line 22 (SDA) via the two communication protocols, via the clock line 21 (SCLK) and the data line 22 (SDA). ) Work in conjunction with a single or multiple master and slave devices.

The following is a description of the synchronization method of the printer compatible wafer of the present invention. Please refer to FIG. 3, which is a schematic flow chart of the synchronization method of the printer compatible wafer of the present invention, as shown in the figure: At the printer end 20, the printer end 20 performs verification on the ink cartridge 10, and the specific verification steps are as follows:

In step S01, the printer terminal 20 starts to work. At this time, the printer terminal 20 simultaneously transmits the clock signal to the clock pin of the microprocessor 11 and the original wafer 12 via the clock line 21 (SCLK). 111, 121 for synchronizing; wherein the printer terminal 20 transmits and receives commands and data through the clock line 21 (SCLK) and the data line 22 (SDA) via the communication protocol of both parties.

Step S02, the microprocessor 11 triggers and turns on the data line 22 (SDA) and the data pin 122 of the original wafer 12 via the clock signal;

Step S03, the printer end 20 transmits a command via the data line 22 (SDA) to The microprocessor 11;

Step S04, the microprocessor 11 discriminates whether the received command is a verification command via the data line 22 (SDA), and executes step S05 when confirming that the received command is a verification command, and confirms that the received command is not When the command is verified, step S06 is performed;

Step S05, when it is confirmed that the command is a verification command, the original wafer 12 directly returns the verification signal to the printer terminal 20;

Step S06, when it is confirmed that the command is a control command (that is, not a verification command), the microprocessor 11 disconnects the data line 22 (SDA) from the original wafer 12, and the microprocessor 11 directly takes over the The data line 22 (SDA) of the printer end 20 receives and processes control commands to perform a read or write based on the control command to perform the printing operation.

In summary, the serial connection method of the present invention can shorten the data transmission time, so that the operation time on the entire line is the same as that in the unconnected state, so that the printer and the original wafer achieve the synchronous transmission effect.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Variations and modifications are still within the scope of the patents of the present invention.

Claims (7)

A printer compatible wafer synchronous transmission circuit, comprising a microprocessor (MCU) disposed between the printer end and the original wafer, wherein the printer clock line (SCLK) is connected in parallel to the micro processing (MCU) and the clock pin of the original chip, the printer end transmits the clock signal to the microprocessor (MCU) and the clock of the original wafer through the clock line (SCLK) a pin for synchronously receiving and processing a command transmitted by the printer, the data line (SDA) of the printer is connected to the microprocessor (MCU), and then connected to the microprocessor (MCU) via the microprocessor The data pin of the original wafer. The printer-compatible wafer synchronous transmission circuit of claim 1, wherein the microprocessor (MCU) is triggered by the clock signal and turns on the data line (SDA) and the original wafer. The data pin is determined whether the received command is a verification command. When the command is confirmed as a verification command, the original chip returns the verification signal to the printer. The printer-compatible wafer synchronous transmission circuit according to any one of claims 1 to 2, wherein the printer end transmits the clock line (SCLK) via a communication protocol of both parties. The data line (SDA) sends and receives commands and data. The printer-compatible wafer synchronous transfer circuit according to any one of claims 1 to 2, wherein the microprocessor (MCU) determines the command system In order to control the command, the microprocessor (MCU) disconnects the data line and the original wafer from the rear, and directly receives the data line (SDA) of the printer end via the microprocessor (MCU) and receives The control command is processed to perform a read or write based on the control command. A printer-compatible chip synchronization method includes: feeding a clock signal of a printer end to a microprocessor (MCU) and an original chip, so that the microprocessor (MCU) and the original wafer are simultaneously received and Processing the command transmitted by the printer end; the microprocessor (MCU) triggers and turns on the data line (SDA) and the original wafer via the clock signal; the microprocessor (MCU) passes the data line ( SDA) discriminates whether the received command is a verification command; and when confirming that the command is a verification command, the original chip returns the verification signal to the printer end. The method for synchronizing a printer compatible chip according to claim 5, wherein the printer end transmits and receives commands through the clock line (SCLK) and the data line (SDA) via a communication protocol of both parties. data. The printer-compatible wafer synchronization method according to any one of claims 5 to 6, wherein the microprocessor (MCU) determines that the command is controlled When the command is made, the microprocessor (MCU) disconnects the data line and the original wafer from the rear, and directly receives and processes the data line (SDA) of the printer through the microprocessor (MCU). The control command to perform reading or writing based on the control command.