CN106096695A - A kind of randomizer for passive label chip - Google Patents
A kind of randomizer for passive label chip Download PDFInfo
- Publication number
- CN106096695A CN106096695A CN201610398358.3A CN201610398358A CN106096695A CN 106096695 A CN106096695 A CN 106096695A CN 201610398358 A CN201610398358 A CN 201610398358A CN 106096695 A CN106096695 A CN 106096695A
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- CN
- China
- Prior art keywords
- feedback shift
- shift register
- analog circuit
- linear feedback
- random number
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/58—Random or pseudo-random number generators
- G06F7/588—Random number generators, i.e. based on natural stochastic processes
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computational Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
The invention discloses a kind of randomizer for passive label chip, including analog circuit and digital circuit, described analog circuit produces random number, and the random number exported described analog circuit by described digital circuit carries out output process.Present invention employs analog circuit and scheme that digital circuit combines, analog circuit have employed the ring oscillator of low-power consumption, effectively reduces the power consumption of chip, and digital circuit uses the linear feedback shift register of 32, and the cycle is 232, the random number of analog circuit being exported after processing, the new random number of generation has the most statistically.
Description
Technical field
The present invention relates to a kind of randomizer for passive label chip.
Background technology
At present, in RFID application, it is possible to the reader situation to multiple tag operational, therefore label occur
Anti-collision performance most important.Existing label anti-confliction algorithm, mostly based on random number.Therefore, use at random
Property good randomizer the anti-collision performance improving label is had important impact.Random number can be divided into true random number and
Pseudo random number two kinds.True random number use analog circuit produce, due to deviation and the change of working environment of manufacturing process, very with
The change of machine number does not has rule to follow, but the speed produced is slow and the most bad.Pseudo random number has fixing week
Phase, its produce random number follow fixing rule, therefore pseudo random number is predictable.
Summary of the invention
The present invention seeks to provide a kind of random number for passive label chip to send out for the defect that prior art exists
Raw device.
The present invention for achieving the above object, adopts the following technical scheme that a kind of random number for passive label chip is sent out
Raw device, including analog circuit and digital circuit, described analog circuit produces random number, and by described digital circuit to described simulation
The random number of circuit output carries out output process.
Further, described analog circuit is mainly made up of ring oscillator, and described digital circuit is mainly by linear feedback
Shift register is constituted；Wherein, the output of described ring oscillator is as the input of described linear feedback shift register.
Further, described linear feedback shift register is made up of 32 bit registers；Wherein, the clock of digital circuit and
Reset signal is connected respectively to Clk end and the Reset end of each depositor, and its proper polynomial is X32+X30+X8+X3+1；
Result after the output of the described ring oscillator output XOR with the 32nd of linear feedback shift register is made
For the input of the 1st of linear feedback shift register；Meanwhile, the result after XOR the most respectively with linear feedback shift register
The 29th, the 7th and the 2nd XOR after, respectively as its 30th, the 8th and the input of the 3rd, and linear feedback move
Remaining input of bit register is then as the output of its previous bit register.
Beneficial effects of the present invention: present invention employs analog circuit and scheme that digital circuit combines, analog circuit
Have employed the ring oscillator of low-power consumption, effectively reduce the power consumption of chip, and digital circuit uses the linear feedback of 32 to move
Bit register, the cycle is 232, the random number of analog circuit being exported after processing, the new random number of generation has preferably statistics
Property.
Accompanying drawing explanation
The overall structure schematic diagram of Fig. 1 present invention.
The structural representation of the linear feedback shift register of Fig. 2 present invention.
Detailed description of the invention
Shown in Fig. 1, disclose a kind of randomizer for passive label chip, including analog circuit and numeral electricity
Road, described analog circuit produces random number, and the random number exported described analog circuit by described digital circuit exports
Process；Make the random number of output the most statistically.Wherein, described analog circuit is mainly made up of ring oscillator, described number
Word main circuit to be made up of linear feedback shift register；Wherein, the output of described ring oscillator is as described linear feedback
The input of shift register.
Fig. 2 is the structural representation of the linear feedback shift register of the present invention.This linear feedback shift register is by 32
Bit register is constituted；Wherein, the clock of described digital circuit and reset signal be connected respectively to each depositor Clk end and
Reset end, its proper polynomial is X32+X30+X8+X3+1；Ensure that maximum cycle is 232.Wherein, it is low due to analog circuit
The ring oscillator of power consumption, its frequency of oscillation shakes because of the deviation of manufacturing process and the change of external operating environment, this
Shake is uncertain, and its output is as the input of digital circuit.
Wherein, after the output XOR of the 32nd of the output of described ring oscillator and linear feedback shift register, knot
Fruit is as the input of the 1st of linear feedback shift register；Meanwhile, the result after XOR is posted with linear feedback shift the most respectively
After the 29th of storage, the 7th and the 2nd XOR, respectively as its 30th, the 8th and the input of the 3rd, and the most anti-
Feedback remaining input of shift register is then as the output of its previous bit register.So random number of output has more statistics
Property.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (3)
1. the randomizer for passive label chip, it is characterised in that include analog circuit and digital circuit, institute
State analog circuit and produce random number, and the random number exported described analog circuit by described digital circuit carries out output process.
2. the randomizer for passive label chip as claimed in claim 1, it is characterised in that described analog circuit
Mainly being made up of ring oscillator, described digital circuit is mainly made up of linear feedback shift register；Wherein, described annular is shaken
Swing the output input as described linear feedback shift register of device.
3. the randomizer for passive label chip as claimed in claim 2, it is characterised in that described linear feedback
Shift register is made up of 32 bit registers；Wherein, clock and the reset signal of digital circuit is connected respectively to each depositor
Clk end and Reset end, its proper polynomial is X32+X30+X8+X3+1；
Result after the output of the described ring oscillator output XOR with the 32nd of linear feedback shift register is as line
The input of the 1st of property feedback shift register；Meanwhile, the result after XOR the most respectively with the of linear feedback shift register
After 29, the 7th and the 2nd XOR, respectively as its 30th, the 8th and the input of the 3rd, and linear feedback shift is posted
Remaining input of storage is then as the output of its previous bit register.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610398358.3A CN106096695A (en) | 2016-06-07 | 2016-06-07 | A kind of randomizer for passive label chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610398358.3A CN106096695A (en) | 2016-06-07 | 2016-06-07 | A kind of randomizer for passive label chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106096695A true CN106096695A (en) | 2016-11-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610398358.3A Pending CN106096695A (en) | 2016-06-07 | 2016-06-07 | A kind of randomizer for passive label chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106096695A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045947A (en) * | 2019-04-22 | 2019-07-23 | 湖南国科微电子股份有限公司 | A kind of random number generation unit and device |
| CN110457007A (en) * | 2019-09-12 | 2019-11-15 | 上海明矽微电子有限公司 | A kind of RFID chip random number generating apparatus and method |
Citations (7)
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|---|---|---|---|---|
| US20030037079A1 (en) * | 2001-08-15 | 2003-02-20 | Wilber Scott A. | True random number generator and entropy calculation device and method |
| CN1588304A (en) * | 2004-08-18 | 2005-03-02 | 浙江大学 | High speed true random number generator |
| CN101772915A (en) * | 2007-06-22 | 2010-07-07 | Lsi公司 | Cryptographic random number generator using finite field operations |
| CN101957741A (en) * | 2010-10-18 | 2011-01-26 | 东南大学 | Sub-threshold value characteristic-based true random number generator |
| CN201773390U (en) * | 2010-09-01 | 2011-03-23 | 中国电力科学研究院 | Truly random number generator based on resistance noise processing |
| CN102662625A (en) * | 2012-04-06 | 2012-09-12 | 国网电力科学研究院 | True random number generator and realization method thereof |
| CN103150138A (en) * | 2013-03-29 | 2013-06-12 | 成都三零嘉微电子有限公司 | Digital-circuit-based true random number generator |
-
2016
- 2016-06-07 CN CN201610398358.3A patent/CN106096695A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030037079A1 (en) * | 2001-08-15 | 2003-02-20 | Wilber Scott A. | True random number generator and entropy calculation device and method |
| CN1588304A (en) * | 2004-08-18 | 2005-03-02 | 浙江大学 | High speed true random number generator |
| CN101772915A (en) * | 2007-06-22 | 2010-07-07 | Lsi公司 | Cryptographic random number generator using finite field operations |
| CN201773390U (en) * | 2010-09-01 | 2011-03-23 | 中国电力科学研究院 | Truly random number generator based on resistance noise processing |
| CN101957741A (en) * | 2010-10-18 | 2011-01-26 | 东南大学 | Sub-threshold value characteristic-based true random number generator |
| CN102662625A (en) * | 2012-04-06 | 2012-09-12 | 国网电力科学研究院 | True random number generator and realization method thereof |
| CN103150138A (en) * | 2013-03-29 | 2013-06-12 | 成都三零嘉微电子有限公司 | Digital-circuit-based true random number generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045947A (en) * | 2019-04-22 | 2019-07-23 | 湖南国科微电子股份有限公司 | A kind of random number generation unit and device |
| CN110457007A (en) * | 2019-09-12 | 2019-11-15 | 上海明矽微电子有限公司 | A kind of RFID chip random number generating apparatus and method |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |