CN104393890A - Safe NFC chip - Google Patents
Safe NFC chip Download PDFInfo
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- CN104393890A CN104393890A CN201410735808.4A CN201410735808A CN104393890A CN 104393890 A CN104393890 A CN 104393890A CN 201410735808 A CN201410735808 A CN 201410735808A CN 104393890 A CN104393890 A CN 104393890A
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Abstract
The invention discloses a safe NFC chip. The safe NFC chip comprises a microcontroller, a NFC signal processing unit, a security module, and an input-output interface unit; the input-output interface unit, the microcontroller, the NFC signal processing unit and the security module are sequentially in electrical connection via an internal connection bus of the chip; the microcontroller is respectively in electrical connection with a power supply module, a clock module and a data storage module via the internal connection bus of the chip. By integrating more input-output interfaces with the NFC chip and adding more practical interface functions, the manufacturing cost is reduced, and the chip volume is also reduced; meanwhile, the security module is installed inside the chip for encrypting and decrypting the received data information, thus increasing the safety of the chip; the power supply module and the clock module are in electrical connection with the microcontroller and provide power supply and clock signal for the microcontroller; the data storage module is used for storing and managing the received data.
Description
Technical field
The present invention relates to NFC chip technical field, be specially a kind of safe NFC chip.
Background technology
NFC (Near Field Communication) i.e. near field communication (NFC), by a kind of non contact angle measurement of PHILIPS Co. and Sony joint development and interconnection technique, wireless near field communication can be carried out at mobile device, consumer electronics product, FC and Based Intelligent Control Tool Room, NFC provides a kind of solution of simple, touch, can allow consumer's simple, intuitive ground exchange message, access content and service.
NFC is own through defining international standard IS021481, cover IS018092, IS014443, the content of IS015693 etc., the attainable function of NFC comprises non-contact card, contactless card reader and point-to-point (Feer-to-Feer) communication three kinds, in prior art, the input/output interface mainly UART of NFC chip, the digital communication interfaces such as SFI, realize the conversion of digital signal and NFC analog signal, these NFC chip are generally used for being embedded into working together with the main control chip of mobile phone inside mobile phone and realize mobile phone NFC function, Cell Phone Design and manufacturer is needed to realize.If the mobile phone that oneself will be allowed to have by a device or miscellaneous equipment realize NFC function, this device just needs existing NFC chip to add some other chips again to solve the Communication with these existing equipments, both cost was added, also increase small product size simultaneously, and be not provided with data in original equipment to store and clock module, clock signal can not be provided in time to chip, and the data received are carried out storage administration or backed up legacy data, on the other hand when chip uses, easily there is uneasy congruent problem in data in transmitting procedure.
Summary of the invention
The object of the present invention is to provide a kind of safe NFC chip, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme: a kind of safe NFC chip, comprise microcontroller, NFC signal processing unit, security module and input/output interface unit, described input/output interface unit, microcontroller, NFC signal processing unit is connected bus with security module by the inside of chip and is electrically connected successively, encrypting module is provided with in described security module, deciphering module and data conveyor module, described security module and outside R-T unit are electrically connected, described outside R-T unit comprises external reception device and outside dispensing device, described input/output interface unit and external interface device are electrically connected, described microcontroller connects bus by the inside of chip and is also electrically connected with power module respectively, clock module and data memory module.
Preferably, described NFC signal processing unit is IS014443RF signal processing unit.
Preferably, described data memory module comprises the RAM administration module for carrying out real-time management to ram in slice and the FLASH administration module for carrying out real-time management to in-chip FLASH.
Preferably, described input/output interface unit can be bluetooth communication unit, WIFI communication unit, digital to analog converter, USB control unit or SD/MMC control unit, and the external interface device corresponding with it can be ultra-high frequency antenna, ultra-high frequency antenna, audio connector, USB connector or SD/MMC connector.
Compared with prior art, the invention has the beneficial effects as follows: the NFC signal processing unit of the present invention by arranging in chip, NFC signal processing unit is for receiving and process the signal message of outside R-T unit, and signal is sent to security module, by the encrypting module in security module, deciphering module and data conveyor module, the data received are encrypted, deciphering and transport process, then pass to microcontroller by NFC signal processing unit to carry out controlling and processing, improve safety in utilization and the accuracy of chip, and pass through the integrated more input/output interface of NFC chip, increase more practical interface function, decrease production cost, also reduce the volume of chip simultaneously, power module and clock module are electrically connected mutually with microcontroller and provide power supply and clock signal for microcontroller, the data that data memory module is used for receiving carry out storage administration.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1 microcontroller, 2 data memory modules, 3 power modules, 4 clock modules, 5NFC signal processing unit, 6 input/output interface unit, 7 security modules, 71 encrypting modules, 72 deciphering modules, 73 data conveyor modules, 8 outside R-T units, 81 external reception devices, 82 outside dispensing devices, 9 external interface devices.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the invention provides a kind of technical scheme: a kind of safe NFC chip, comprise microcontroller 1, NFC signal processing unit 5, security module 7 and input/output interface unit 6, input/output interface unit 6, microcontroller 1, NFC signal processing unit 5 is connected bus with security module 7 by the inside of chip and is electrically connected successively, NFC signal processing unit 5 is IS014443RF signal processing units, encrypting module 71 is provided with in security module 7, deciphering module 72 and data conveyor module 73, security module 71 and outside R-T unit 8 are electrically connected, outside R-T unit 8 comprises external reception device 81 and outside dispensing device 82, external reception device 81 is for receiving outside data-signal, outside dispensing device 82 is for being sent to security module 7 by the signal of reception, input/output interface unit 6 and external interface device 9 are electrically connected, input/output interface unit 6 can be bluetooth communication unit, WIFI communication unit, digital to analog converter, USB control unit or SD/MMC control unit, and the external interface device 9 corresponding with it can be ultra-high frequency antenna, ultra-high frequency antenna, audio connector, USB connector or SD/MMC connector, microcontroller 1 connects bus by the inside of chip and is also electrically connected with power module 3 respectively, clock module 4 and data memory module 2, data memory module 2 comprises the RAM administration module for carrying out real-time management to ram in slice and the FLASH administration module for carrying out real-time management to in-chip FLASH.
Operation principle: when NFC chip works, the NFC signal processing unit 5 arranged is for receiving and process the signal message of outside R-T unit 8, and signal is sent to security module 7, by the encrypting module 71 in security module 7, deciphering module 72 and data conveyor module 73, the data received are encrypted, deciphering and transport process, then pass to microcontroller 1 by NFC signal processing unit 5 to carry out controlling and processing, data memory module 2 is divided into RAM to manage and FLASH manages several part respectively to core ram in slice and FLASH implementation management, the data that external interface device 9 pairs of NFC signal processing units 5 process input or output, in addition, power module 3 and clock module 4 are electrically connected mutually with microcontroller 1 and provide power supply and clock signal for microcontroller 1.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalents thereof.
Claims (4)
1. the NFC chip of a safety, comprise microcontroller, NFC signal processing unit, security module and input/output interface unit, it is characterized in that: described input/output interface unit, microcontroller, NFC signal processing unit is connected bus with security module by the inside of chip and is electrically connected successively, encrypting module is provided with in described security module, deciphering module and data conveyor module, described security module and outside R-T unit are electrically connected, described outside R-T unit comprises external reception device and outside dispensing device, described input/output interface unit and external interface device are electrically connected, described microcontroller connects bus by the inside of chip and is also electrically connected with power module respectively, clock module and data memory module.
2. a kind of safe NFC chip according to claim 1, is characterized in that: described NFC signal processing unit is IS014443RF signal processing unit.
3. a kind of safe NFC chip according to claim 1, is characterized in that: described data memory module comprises the RAM administration module for carrying out real-time management to ram in slice and the FLASH administration module for carrying out real-time management to in-chip FLASH.
4. a kind of safe NFC chip according to claim 1, it is characterized in that: described input/output interface unit can be bluetooth communication unit, WIFI communication unit, digital to analog converter, USB control unit or SD/MMC control unit, and the external interface device corresponding with it can be ultra-high frequency antenna, ultra-high frequency antenna, audio connector, USB connector or SD/MMC connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735808.4A CN104393890A (en) | 2014-12-05 | 2014-12-05 | Safe NFC chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735808.4A CN104393890A (en) | 2014-12-05 | 2014-12-05 | Safe NFC chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104393890A true CN104393890A (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410735808.4A Pending CN104393890A (en) | 2014-12-05 | 2014-12-05 | Safe NFC chip |
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| CN (1) | CN104393890A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490709A (en) * | 2015-12-14 | 2016-04-13 | 恒宝股份有限公司 | Miniaturized passive radio frequency amplification apparatus and realization method thereof |
| WO2020015003A1 (en) * | 2018-07-16 | 2020-01-23 | 杨俊佳 | Chip based on local data transmission, and electronic device containing chip |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201417458Y (en) * | 2009-05-11 | 2010-03-03 | 深圳市江波龙电子有限公司 | External NFC device |
| CN102497307A (en) * | 2011-11-29 | 2012-06-13 | 冯海青 | Near field communication (NFC) chip |
| WO2012155620A1 (en) * | 2011-09-06 | 2012-11-22 | 中兴通讯股份有限公司 | Method and mobile communication terminal for protecting near field communication security |
| CN103220020A (en) * | 2012-01-19 | 2013-07-24 | 中兴通讯股份有限公司 | External near field communication (NFC) device |
-
2014
- 2014-12-05 CN CN201410735808.4A patent/CN104393890A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201417458Y (en) * | 2009-05-11 | 2010-03-03 | 深圳市江波龙电子有限公司 | External NFC device |
| WO2012155620A1 (en) * | 2011-09-06 | 2012-11-22 | 中兴通讯股份有限公司 | Method and mobile communication terminal for protecting near field communication security |
| CN102497307A (en) * | 2011-11-29 | 2012-06-13 | 冯海青 | Near field communication (NFC) chip |
| CN103220020A (en) * | 2012-01-19 | 2013-07-24 | 中兴通讯股份有限公司 | External near field communication (NFC) device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490709A (en) * | 2015-12-14 | 2016-04-13 | 恒宝股份有限公司 | Miniaturized passive radio frequency amplification apparatus and realization method thereof |
| WO2020015003A1 (en) * | 2018-07-16 | 2020-01-23 | 杨俊佳 | Chip based on local data transmission, and electronic device containing chip |
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Application publication date: 20150304 |
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| WD01 | Invention patent application deemed withdrawn after publication |