IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0622912
(2003-07-15)
|
우선권정보 |
TW-0105458 (2003-03-13) |
발명자
/ 주소 |
|
출원인 / 주소 |
- International United Technology Co., Ltd.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
12 |
초록
▼
An identification circuit for identifying the type of an ink jet print head and method thereof is disclosed. A reset signal and at least a clock signal are provided. A count value is reset if the identification circuit receives a reset signal. The count value is counted to next value if the identifi
An identification circuit for identifying the type of an ink jet print head and method thereof is disclosed. A reset signal and at least a clock signal are provided. A count value is reset if the identification circuit receives a reset signal. The count value is counted to next value if the identification circuit receives a corresponding clock signal. A logic circuit is programmed to output the required identification code sequentially from the ink jet print head according to the required identification code designated for the ink jet print head and the count value.
대표청구항
▼
1. An ink jet print head identification circuit, suitable for using in an ink jet printer that comprises a reset signal line, at least one clock signal line, and an identification code signal line, for identifying a type of the ink jet print head, comprising:a counter, coupled to the reset signal li
1. An ink jet print head identification circuit, suitable for using in an ink jet printer that comprises a reset signal line, at least one clock signal line, and an identification code signal line, for identifying a type of the ink jet print head, comprising:a counter, coupled to the reset signal line and at least one clock signal line, used to reset the counter when a reset signal is received from the reset signal line, and used to count a count value of the counter to a next value when a corresponding clock signal is received from the at least one clock signal line, so as to output the count value from a plurality of output terminals of the counter; a logic unit, comprising a plurality of input terminals and an output terminal, wherein the output terminal of the logic unit is coupled to the identification code signal line, so as to output an identification code that represents the type of the ink jet print head; and a programming unit, coupled to the output terminals of the counter and the input terminals of the logic unit, used to program the corresponding connection between each output terminal of the counter and each input terminal of the logic unit. 2. The ink jet print head identification circuit of claim 1, wherein, after the counter is reset, the count value of the counter is counted in a sequence of 1, 2, 4, 8, 16, . . . , etc.3. The ink jet print head identification circuit of claim 1, wherein the logic unit is an OR gate, a NAND gate, or a decoder.4. The ink jet print head identification circuit of claim 1, wherein the logic unit further comprises an enabling control terminal, and the enabling control terminal is coupled to a clock signal line.5. The ink jet print head identification circuit of claim 1, wherein the programming unit is programmed in a mask programmed way when the identification circuit of the ink jet print head is being manufactured, so as to store the identification code.6. The ink jet print head identification circuit of claim 1, wherein the programmable programming unit is provided by using a plurality of fuses, so as to store the identification code.7. The ink jet print head identification circuit of claim 1, wherein the programmable programming unit is provided by using a plurality of electrical connectors, so as to store the identification code.8. An ink jet print head identification circuit, suitable for use in an ink jet printer that comprises a reset signal line, at least one clock signal line, and an identification code signal line, for identifying a type of the ink jet print head, comprising:a counter, coupled to the reset signal line and at least one clock signal line, used to reset the counter when a reset signal is received from the reset signal line, and used to count a count value of the counter to a next value when a corresponding clock signal is received from the at least one clock signal line, so as to output the count value from a plurality of output terminals of the counter; a plurality of switches, wherein each of the plurality of switches comprises an input terminal, an output terminal, and a control terminal, and all output terminals of the switches are coupled to the identification code signal line, so as to output an identification code that represents the type of the ink jet print head, and each control terminal of the switches is coupled to the corresponding output terminal of the counter, respectively; and a programming unit, coupled to the input terminals of the switches, used to program the input value of the input terminal of the switches according to the identification code to be stored. 9. The ink jet print head identification circuit of claim 8, wherein, after the counter is reset, the count value of the counter is counted in a sequence of 1, 2, 4, 8, 16, . . . , etc.10. The ink jet print head identification circuit of claim 8, wherein the switches are a plurality of NMOS transistors or a plurality of CMOS transistors.11. The ink jet print head identification circuit of claim 8, wherein the programming unit is programmed in a mask programmed way when the identification circuit of the ink jet print head is being manufactured, so as to store the identification code.12. The ink jet print head identification circuit of claim 8, wherein the programmable programming unit is provided by using a plurality of fuses, so as to store the identification code.13. The ink jet print head identification circuit of claim 8, wherein the programmable programming unit is provided by using a plurality of electrical connectors, so as to store the identification code.14. An ink jet print head identification method, suitable for identifying a type of the ink jet print head, comprising:providing a reset signal and at least one clock signal; resetting a count value when the reset signal is received; counting the count value to a next value when the at least one clock signal is received; and programming a logic unit according to an identification code that represents the type of the ink jet print head and the count value, so that the ink jet print head sequentially outputs the identification code. 15. The ink jet print head identification method of claim 14, wherein, after the counter is reset, the count value of the counter is counted in a sequence of 1, 2, 4, 8, 16, . . . , etc.16. The ink jet print head identification method of claim 14, wherein the logic unit is an OR gate, a NAND gate, or a decoder.17. The ink jet print head identification method of claim 14, wherein the logic circuit unit is a plurality of NMOS transistors or a plurality of CMOS transistors.
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