CN1512295A - Power saving processing method of non-contact IC card receiving and transmitting signal - Google Patents
Power saving processing method of non-contact IC card receiving and transmitting signal Download PDFInfo
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- CN1512295A CN1512295A CNA021597995A CN02159799A CN1512295A CN 1512295 A CN1512295 A CN 1512295A CN A021597995 A CNA021597995 A CN A021597995A CN 02159799 A CN02159799 A CN 02159799A CN 1512295 A CN1512295 A CN 1512295A
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Abstract
The present invention is power saving signal receiving and transmitting method for non-contact IC card. The power saving signal receiving method includes initializing the related registers; setting power saving mode signal for the system to enter sleep state to wait for awaking by the receiving interruption; executing interruption service program on receiving interruption service request to read the received data into the micro controller unit, setting power saving mode signal and turning off the system clock until the awaking by the next receiving interruption; awaking the system clock after last data receiving interruption service and entering normal procedure; judging whether to have received effective data and returning if yes or performing error processing if no. The present invention can lower power consumption of non-contact IC card operation, raise work distance and ensure the accurate communication between the chip and the card reader.
Description
Technical field
The present invention relates to the power-saving processing method that non-contact IC card received and sent signal.
Background technology
In the application of contactless IC card, because the size restrictions of card, the inside that makes contactless IC card is charged pool not, need be powered by wireless mode by card reader, produce the required DC voltage of chip operation through the mu balanced circuit in the card, the antenna in the card also needs particular design.After the contactless IC card internal antenna receives radiofrequency signal, by the radio frequency analog interface, detect data-signal the signal that the card reader that is coupled to from card antenna is sent, to the radio frequency signal decoding, convert the signal that to be discerned by microprocessor to, pass through rectifying and wave-filtering from the card antenna coupling energy, for chip provides stable supply voltage and electric current, the clock signal of extracting carrier frequency the carrier signal that the card reader that is coupled to from card antenna is sent is as the major clock of sending into numerical portion, and the output signal that chip is produced is transmitted to card reader by the method for load-modulate from card antenna.
Contactless ic is stuck in and includes modulation and unmodulated situation in reception and the process of transmitting, it is discontinuous to cause receiving the transmission energy, causes power consumption easily, and micro-control unit this moment (MCU) is if there is then more power consumption of clock, VDD pulls down with supply voltage, reduces the IC-card operating distance.In addition, because the quiescent current consumption when MCU stops than the work clock of MCU when dynamic duty increases to some extent, and when the noncontact mode is worked, energy is coupled by antenna, it is discontinuous, lower (to receive and transmit status) the antenna coupling energy when non-contact card is operated in communication state, if the clock of MCU does not stop at this moment, then power consumption is bigger, cause operating distance to reduce, even make core card cisco unity malfunction.
Summary of the invention
The object of the present invention is to provide a kind of low-power consumption mode working method, improve the non-contact IC card reception of IC-card operating distance and the power-saving processing method of transmission signal.
The power-saving processing method of a kind of non-contact IC card received signal provided by the present invention, comprise the following steps: at first each relevant register to be carried out initialization, comprise that selection, reception data counter, the interruption of address ram, RAM memory block enables and interrupt flag bit; Power saving mode signal is set, makes system enter dormant state, wait for by receiving and interrupt waking up; Receive interrupt service routine if having to receive to interrupt then carrying out, that is: the data that receive are read in micro-control unit and power saving mode signal shutdown system clock is set, can interrupt waking up by receive next time; Receive interrupt service routine of data and during the shutdown system clock, will make program withdraw from interrupt service routine and enter normal program circuit when carrying out last by accepting state signal waken system clock; If received data, then check whether receive valid data: if then correctly return; If not then make the fault reason.
A kind of non-contact IC card provided by the present invention sends the power-saving processing method of signal, comprise the following steps: at first each relevant register to be carried out initialization, comprise that selection, transmission data counter, the interruption of address ram, RAM memory block enables and interrupt flag bit; Call the transmission subfunction and write first data that will send, be equipped with the request of closing and send the position; Power saving mode signal is set makes system enter dormant state, wait for by sending and interrupt waking up; Interrupt then carrying out sending interrupt service routine if having to send, that is: the data that will send write radio frequency interface and shutdown system clock, can be sent by the next one to interrupt waking up; When carrying out last interrupt service routine that sends data, shutdown system clock not, program enters normal program circuit after withdrawing from interrupt service routine; Then wait for next bar instruction that receives the card reader transmission if sent data.
Owing to adopted above-mentioned technical solution, be that the park mode technology is to reduce power consumption, and after in reception and process of transmitting, finishing necessary communication function, by method shutdown system clock (promptly entering park mode) by the written in software special register, so that the power consumption when reducing communication, low power consumpting state can interrupt waking up by receiving and sending.Power consumption when therefore the present invention has successfully reduced the contactless IC card operation has improved operating distance, has guaranteed that chip communicates by letter with the accurate of card reader.
Description of drawings
Fig. 1 is the FB(flow block) of province's electric treatment of non-contact IC card received signal of the present invention;
Fig. 2 is the FB(flow block) that non-contact IC card of the present invention sends province's electric treatment of signal.
Embodiment
As shown in Figure 1, the flow process of province's electric treatment of contactless IC card received signal of the present invention is as follows:
Wherein: power saving mode signal IDLE is a system clock dormancy enable signal, and 1 expression MCU clock is in normal operating conditions, and 0 expression MCU clock is in closed condition, enters park mode.At first initialization each about register (comprise address ram, RAM memory block selection, receive data counter, interrupt enabling and interrupt flag bit etc.), the IDLE signal is set make system enter dormant state, wait for by receiving and interrupt waking up.If have to receive to interrupt then carrying out and receive interrupt service routine, interrupt service routine reads in the data that receive MCU and IDLE signal at stop system clock is set, can interrupt waking up by receive next time, receive interrupt service routine of data and during the shutdown system clock when carrying out last, to make program withdraw from interrupt service routine and enter normal program circuit by accepting state signal receive waken system clock.If receiving data then checks whether receive valid data, if then correctly return, if not then make the fault reason.
As shown in Figure 2, the flow process of province's electric treatment of contactless IC card transmission signal of the present invention is as follows:
At first initialization each about register (comprise address ram, RAM memory block selection, send data counter, interrupt enabling and interrupt flag bit etc.), call the transmission subfunction and write first data that will send, be equipped with the request of closing and send the position, the IDLE signal is set makes system enter dormant state, wait for by sending and interrupt waking up.If have to send to interrupt then carrying out and send interrupt service routine, the data that interrupt service routine will send write radio frequency (RF) interface and shutdown system clock, can send by the next one and interrupt waking up, when carrying out last interrupt service routine that sends data, shutdown system clock not, program enters normal program circuit after withdrawing from interrupt service routine.Then wait for next bar instruction that receives the card reader transmission if sent data.
In the said process, for preventing power consumption, clock between rest period read-only program memory ROM read enable signal and chip selection signal is invalid.
Claims (2)
1. the power-saving processing method of a non-contact IC card received signal comprises the following steps:
At first each relevant register is carried out initialization, comprise that selection, reception data counter, the interruption of address ram, RAM memory block enables and interrupt flag bit;
Power saving mode signal is set, makes system enter dormant state, wait for by receiving and interrupt waking up;
Receive interrupt service routine if having to receive to interrupt then carrying out, that is:
The data that receive are read in micro-control unit and power saving mode signal shutdown system clock are set, can by
Receive next time and interrupt waking up;
Receive interrupt service routine of data and during the shutdown system clock when carrying out last, will be by connecing
Receive status signal waken system clock, make program withdraw from interrupt service routine and enter normal program circuit;
If received data, then check whether receive valid data:
If then correctly return;
If not then make the fault reason.
2. the power-saving processing method of a non-contact IC card transmission signal comprises the following steps:
At first each relevant register is carried out initialization, comprise that selection, transmission data counter, the interruption of address ram, RAM memory block enables and interrupt flag bit;
Call the transmission subfunction and write first data that will send, be equipped with the request of closing and send the position;
Power saving mode signal is set makes system enter dormant state, wait for by sending and interrupt waking up;
Send interrupt service routine if having to send to interrupt then carrying out, that is:
The data that will send write radio frequency interface and shutdown system clock, can be sent by the next one to interrupt waking up;
When carrying out last interrupt service routine that sends data, shutdown system clock not, program enters normal program circuit after withdrawing from interrupt service routine;
Then wait for next bar instruction that receives the card reader transmission if sent data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021597995A CN1512295A (en) | 2002-12-26 | 2002-12-26 | Power saving processing method of non-contact IC card receiving and transmitting signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021597995A CN1512295A (en) | 2002-12-26 | 2002-12-26 | Power saving processing method of non-contact IC card receiving and transmitting signal |
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| Publication Number | Publication Date |
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| CN1512295A true CN1512295A (en) | 2004-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA021597995A Pending CN1512295A (en) | 2002-12-26 | 2002-12-26 | Power saving processing method of non-contact IC card receiving and transmitting signal |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418109C (en) * | 2006-04-18 | 2008-09-10 | 丁丰其 | An ambiguous path identification system and identification method for expressway network |
| CN100447756C (en) * | 2004-08-26 | 2008-12-31 | 因芬尼昂技术股份公司 | Especially code transmitters for memory controllers |
| CN101593287B (en) * | 2008-05-28 | 2010-12-08 | 北京中电华大电子设计有限责任公司 | Power consumption balancing method of smart card |
| CN102017527A (en) * | 2007-12-17 | 2011-04-13 | 韩国电子通信研究院 | Wake-up apparatus and wake-up method for a low power sensor node |
| CN102103405A (en) * | 2009-12-16 | 2011-06-22 | 佳能株式会社 | Data processing apparatus |
| CN1975633B (en) * | 2005-11-30 | 2012-07-04 | 精工爱普生株式会社 | Host apparatus and information processing system using the same |
| CN105404552A (en) * | 2015-12-23 | 2016-03-16 | 恒宝股份有限公司 | Non-contact card data processing method and device |
| CN105488441A (en) * | 2014-09-19 | 2016-04-13 | 上海华虹集成电路有限责任公司 | Signal grasping and state analyzing method based on chip of non-contact smart card |
| CN106649183A (en) * | 2016-11-18 | 2017-05-10 | 深圳市博巨兴实业发展有限公司 | Low power consumption serial communication chip based on MCU |
| CN114167761A (en) * | 2021-10-27 | 2022-03-11 | 山东北溟科技有限公司 | Acoustic beacon activation method and system |
-
2002
- 2002-12-26 CN CNA021597995A patent/CN1512295A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447756C (en) * | 2004-08-26 | 2008-12-31 | 因芬尼昂技术股份公司 | Especially code transmitters for memory controllers |
| CN1975633B (en) * | 2005-11-30 | 2012-07-04 | 精工爱普生株式会社 | Host apparatus and information processing system using the same |
| CN100418109C (en) * | 2006-04-18 | 2008-09-10 | 丁丰其 | An ambiguous path identification system and identification method for expressway network |
| CN102017527A (en) * | 2007-12-17 | 2011-04-13 | 韩国电子通信研究院 | Wake-up apparatus and wake-up method for a low power sensor node |
| CN102017527B (en) * | 2007-12-17 | 2013-08-14 | 韩国电子通信研究院 | Wake-up device and wake-up method for low-power sensor nodes |
| CN101593287B (en) * | 2008-05-28 | 2010-12-08 | 北京中电华大电子设计有限责任公司 | Power consumption balancing method of smart card |
| CN102103405A (en) * | 2009-12-16 | 2011-06-22 | 佳能株式会社 | Data processing apparatus |
| CN102103405B (en) * | 2009-12-16 | 2015-06-17 | 佳能株式会社 | Data processing apparatus |
| CN105488441A (en) * | 2014-09-19 | 2016-04-13 | 上海华虹集成电路有限责任公司 | Signal grasping and state analyzing method based on chip of non-contact smart card |
| CN105404552A (en) * | 2015-12-23 | 2016-03-16 | 恒宝股份有限公司 | Non-contact card data processing method and device |
| CN106649183A (en) * | 2016-11-18 | 2017-05-10 | 深圳市博巨兴实业发展有限公司 | Low power consumption serial communication chip based on MCU |
| CN114167761A (en) * | 2021-10-27 | 2022-03-11 | 山东北溟科技有限公司 | Acoustic beacon activation method and system |
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