CN1350678A - Method for communicating parameters of a digital transmission protocol - Google Patents
Method for communicating parameters of a digital transmission protocol Download PDFInfo
- Publication number
- CN1350678A CN1350678A CN 00807626 CN00807626A CN1350678A CN 1350678 A CN1350678 A CN 1350678A CN 00807626 CN00807626 CN 00807626 CN 00807626 A CN00807626 A CN 00807626A CN 1350678 A CN1350678 A CN 1350678A
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- equipment
- reference device
- transport property
- slave unit
- transmission
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Toxicology (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Communication Control (AREA)
Abstract
The invention concerns a method for communicating parameters of a digital data transmission protocol between an equipment said to be a reference equipment and an equipment said to be a follower equipment so as to enable the follower equipment to be adapted to the transmission characteristics of the reference equipment in a first step, the reference equipment communicates with the follower equipment in standard mode to signal thereto that it can communicate according to another communication mode. At the request of the follower equipment, the characteristics of this new mode are transmitted by the reference equipment. Said characteristics are, for instance, the clock cycles (H28, H34, to H70, H94, H97) indicating the moments for sampling the bits b0, b1, to b7 of an octet. The invention is applicable to microcircuit card systems and to the corresponding terminals.
Description
(for example the present invention relates to be used at so-called " reference " digital transmission equipment (such as the electronic intelligence card) and so-called " retinue " digital transmission equipment, read terminal) between transmit digital transmission protocol parameter so that can learn the method for the characteristic parameter of required transmission, in fact described transmission must be carried out as benchmark (that is to say comparatively moderately) by the performance with reference device.
That this method more specifically is applied to submit on November 18th, 1998, be numbered the digit transmission method of describing in 984492 the french patent application.
This method is characterised in that its every frame has a frame sequence of combination shown in Figure 1 or form.
Therefore, each frame sequentially comprises the ending 16 of frame synchronizing signal 10, data-signal 12, data detection coded signal 14 and frame signal from beginning to ending up.
Synchronizing signal is by the sequence (Fig. 2) of rectangular signal 20,22,24 and 26 regulation, and their duration is respectively the clock period of a clock period, two clock period, three clock period and from one to tens constant, numbers.
Data-signal has by binary signal or bit b
0, b
1, b
2, b
3, b
4, b
5, b
6, and b
7(Fig. 3) form of the byte of Zu Chenging, their binary numeral " 1 " or " 0 " be respectively at feature Ib0 constantly, Ib1, and Ib2, Ib3, Ib4, Ib5, Ib6 and Ib7 are stable (Fig. 4).
To IT7, bit value is that the signal of " 0 " or " 1 " only exists at given time durations and in the given position in this time interval at time interval IT0.
Data detection coded signal 14 is similar at them and is current data-signal.
Two elementary data item or bytes in succession are that the given time interval or window 30 with the constant duration by separates, this time interval is used for sending signaling-information (such as the ending of byte and/or ending or reception stop signal 34 of frame signal 32), it is called as the data flow con-trol signal, with " Xoff " expression.These signals 32 and 34 have accurate position in this time interval 30, in order to avoid obscure mutually.
In order to make such burst that is used to form frame be accompanyed or follow Equipment Inspection and understanding, the latter need know the combination of frame on the one hand, knows that on the other hand those must consider the moment of the numerical value of binary signal in this frame.
In current smart card/terminal system, by " structure ", about this information of the composition of frame and binary signal value or sampling instant known for terminal (with slave unit).So, be difficult to adjust them, thereby improve the technical characteristic of reference device by changing them.
Therefore, if the technology of using in smart card allows to improve processing speed, then this speed increase can not allow to improve traffic rate, because the latter " is fixed " with slave unit.
And, under the current state of employed system, be difficult to make that the items of equipment with different communication speed coexists together, because must know the characteristic of each reference device that is connected with it with slave unit.
So the parameter that the present invention relates to be used for to transmit the digital data transmission agreement between so-called " reference " equipment and so-called " retinue " equipment is so that adapt to the method for the transport property of reference device with slave unit, this method may further comprise the steps:
(a) according to a kind of for two communication protocols that equipment is known, with transmission mode connect reference device with slave unit, and
(b) from reference device to the information that sends the characteristic be used to stipulate a kind of specific digit transmission method with slave unit, this method will be made by reference device and be used for sending and being received in the data that exchange between two equipment.
Other characteristic and advantage of the present invention will draw by the explanation of reading specific embodiments of the invention, and described explanation provides with reference to accompanying drawing, wherein:
-Fig. 1 is the combination of display application digital transmission frame of the present invention or the figure of form;
-Fig. 2 is the figure of demonstration for the frame synchronizing signal of a particular form of the frame of Fig. 1;
-Fig. 3 shows that for the described data-signal of the frame of Fig. 1 and data detection sign indicating number one makes up and the figure of the ending (when it exists) of frame signaling-information;
-Fig. 4 shows that synchronizing signal, data-signal and signaling-information for a frame of the frame of Fig. 1 is with respect to these signals sampling figure constantly;
The table of-Fig. 5 information that to be a demonstration sent by reference device, be used for to retinue's equipment represent to be used to stipulate the signal that receives from reference device, in cycle with the clock signal of the sampling instant of slave unit;
The table of-Fig. 6 information that to be a demonstration sent by reference device is used for representing to be used to stipulate must send to reference device with slave unit to retinue's equipment cycle of clock signal in the moment of signal;
The table of-Fig. 7 information that to be a demonstration sent by reference device is used for representing to be different to retinue's equipment the frame synchronizing signal of the another kind of form of Fig. 5;
-Fig. 8 is a figure who is presented at the example combinations of byte in the asynchronous type digital transmission protocol; And
To be a demonstration send to table with the information of slave unit by reference device to-Fig. 9, is used for representing to it the characteristic of its XON/XOFF.
The special description is used for digital transmission protocol is sent to method with slave unit, the integral part of these figure (Fig. 1 is to Fig. 4) formation explanation of the present invention from reference device under the situation of the digital transmission frame of stating in being applied to preamble now with reference to Fig. 1 to 4.
To describe the present invention being applied under the situation of microcircuit card now, microcircuit card is also referred to as the electronic intelligence card, and it can be communicated by letter with terminal (such as the bank debits machine) by means of the digital signal that sends by electric current, radio, electromagnetic induction or optical link.Yet it can be applicable to any digital signal communication or transmission between two equipment of synchronized model or asynchronous type.
In the remainder of this explanation, microcircuit card will be called as " reference device ", and terminal will be called as " with slave unit ", can communicate by letter with microcircuit card according to pattern that is adopted by the microcircuit card that constitutes " reference " or method so that represent described terminal.Should be pointed out that terminal and microcircuit card alternately are transmitting apparatus and receiving equipment, and share provide by terminal, allow synchronous same clock signal.
The present invention is applied to the digit transmission method summarized especially in preamble, and it is corresponding to the detailed description that provides in above-mentioned patented claim.
Except synchronously and data and the signaling-information, Fig. 4 has shown for the numerical value of definite these signals the moment that must sample to them.These are listed as follows constantly:
-for the Is1 of synchronizing signal, Is2 and Is3;
-for the Ib0 of the signal of a byte of frame, Ib1, Ib2, Ib3, Ib4, Ib5, Ib6 and Ib7;
-respectively for the ending of the ending of frame or byte signal and for the Isig0 and the Isig1 that receive abort signal (it is called as the data flow con-trol signal, is expressed as " Xoff ").
These constantly number are stipulated by the ordering in cycle of the clock signal that begins to count from initial time (starting point of frame), and described clock signal is common for the terminal that microcircuit card and it are connected to, and is provided by terminal.
The table of Fig. 5 is corresponding to the delivery time of microcircuit card, and just terminal must be sampled the moment of the signal that receives from microcircuit card.In first row, shown the tabulation of sampling instant, and the ordering number that shows the clock period that must occur sampling at that time at secondary series.In secondary series, ordering is number by numeral, and the alphabetical H on top and L represent wherein must carry out the part (H=" High (height) " or L=" Low (low) ") of the clock period of sampling.
The table of Fig. 6 corresponding to the time of reception of microcircuit card, just, can be understood the moment that terminal must send in order to make microcircuit card then at reception period.
And each table comprises the additional row that is called as " Ibyte ", and expression is used for separating the duration of the starting point of two bytes in succession, and this duration comprises the duration of a byte and is preserved for the duration of signaling-information.The numerical value that shows in Fig. 5 and 6 the table is very similar, because be identical with signaling-information synchronously, and data are different slightly with byte duration (Ibyte) signal.Yet the present invention can be used in (Fig. 6) very different synchronous and signaling numerical value when (Fig. 5) is with reception when sending, and also can be used in very different data and the duration numerical value between byte.
Therefore, the table of Fig. 7 is corresponding to the table of Fig. 5, but its synchronizing signal is for moment Is1, and it is very different that Is2 and Is3 do not have on the meaning of read clock ordering number (this is embodied as numerical value " 0 ").Such synchronizing signal means that terminal only need consider that this negative edge is represented the beginning of the counting of clock signal by the negative edge of the signal of microcircuit card transmission.
For " retinue " equipment is in the position of the pacta conventa of listing in the table that is useful in Fig. 5 and 6, the present invention takes measures, and makes microcircuit card send to terminal to them when request.
When terminal received information in these tables be comprised in Fig. 5 and 6, terminal write down these information, so that during receiving and sending, used them to be used in the future any other the communicating by letter of card with this microcircuit card or same series.
More accurately, have when communicating by letter with the first time between the terminal according to the new microcircuit card of new transmission mode of the present invention, new be stuck under this transmission mode notice terminal when T=0: it can be according to another pattern communication.When terminal knew that it is ignorant another pattern of its institute, it sent an instruction, is used for reading from this card the table of Fig. 5 and 6, in its storer, and used these table records them to be used for initiating and the transmission of this card according to new model.
Because the information in Fig. 5 and 6 the table is recorded in terminal, when terminal knows that it is a card according to this new model operation, no longer need to carry out the transmission of these tables.
Relate to and to have described the present invention with the microcircuit card that a terminal communicates according to the digit transmission method of describing in synchronous mode and the patented claim mentioned in front.Yet the present invention can be applied to asynchronous mode, in this case, will be sent to the structure that relates to frame with the information of slave unit from reference device, but does not relate to sampling instant.
Fig. 8 is the exemplary configurations of a byte in asynchronous protocol.It comprises that byte begins bit " DB ", data bit B0 according to a certain order is to B7 (for example from most significant digit, promptly from B7), and bit " PA " (is used to check the integrality of the data of being carried, and stop bit " STOP " Parity Check Bits for example).
Should be pointed out that a frame in asynchronous protocol can comprise a plurality of bytes.
The table of Fig. 9 shows that reference device must offer the information with slave unit, so that the latter can correctly analyze the frame that it receives from reference device, or sends the frame of correctly being analyzed by reference device.
The information that is sent out for example is:
The ordering of first data bit that (a) is sent number, for example the 7th, that is to say B7;
(b) corresponding to voltage level " HIGH (height) " or " LOW (low) " of binary digit " 0 ";
(c) be used for parity checking, just " EVEN (even number) ", " ODD (odd number) " or " NONE (nothing) " to the integrity check of message;
(d) bit number in the data item, for example 8;
(e) stop the number of bit " STOP ", for example 2;
(f) possibility of repetition byte in the incident of parity error, " YES (being) " or " NO (denying) ";
(g) corresponding to the number of cycles of the clock signal of each basic time unit " ETU " of a bit, for example 32;
(h) minimal amount in the cycle of the clock signal between two cycles in succession, for example 4;
(i) item of information of expression maximum latency, the most handy " TIME OUT (overtime) " expression, this time is in the clock period, and for example 80;
(j) maximum data piece size, for example 64;
(k) in the transfer rate of baud rate, for example 9600.
In the table of Fig. 9, " Receiving (reception) " row show the receiving feature of reference device, and these characteristics must be by using during sending with slave unit, so that understood by reference device.Similarly, " Sending (transmission) " row show the transfer characteristic of reference device, and these characteristics must be by using at reception period with slave unit, so that reception is from the message of reference device.
Should be pointed out that some characteristic in the table of Fig. 9 is not necessary, for example (b), (f), (h), (i), (j), or (k) those characteristics of row.
So consequently: the minimal amount of the characteristic that be sent out is (a), (c), (d), (e), must add on it (g) or (k).
Should be pointed out that Fig. 5,6,7 and 9 table has the form of computer documents, these files when being subjected to asking by means of from reading instruction and be sent to slave unit with slave unit.
Claims (17)
1. the parameter that is used for transmitting the digital data transmission agreement between so-called " reference " equipment and so-called " retinue " equipment is so that allow to adapt to slave unit the method for the transport property of reference device, and this method may further comprise the steps:
(a) according to the communication protocol that equipment is known for two, with transmission mode connection reference device and with slave unit, and
(b) from reference device to the information that sends the characteristic be used to stipulate specific digit transmission method with slave unit, this method will be made by reference device and be used for sending and being received in the data that exchange between two equipment.
2. according to the method for claim 1, it is characterized in that during step (a), reference device is to indicating with slave unit, it can communicate according to described specific digit transmission method.
3. according to the method for claim 2, it is characterized in that, during step (b), send the characteristic of described specific digit transmission method with slave unit by reference device, if it does not know the characteristic of this method.
4. according to the method for claim 2, it is characterized in that, during step (b), use described specific digit transmission method with slave unit, if it from previous, connect this method of learning with transmission that the reference device with identical specific digit transmission method carries out.
5. according to each method of above claim 1 to 4, it is characterized in that the characteristic of described specific digit transmission method is recorded in the reference device, and by inserting by reading with slave unit.
6. according to each method of above claim 1 to 5, it is characterized in that the characteristic of specific digit transmission method is according to the direction of digital data transmission and different.
7. according to each method of above claim 1 to 6, when it is applied to the specific digit transmission method of synchronized model, it is characterized in that, transport property is by ordering number (H1, H3, the L6 in the cycle of clock signal, H28, H34 etc.) stipulate, a frame synchronously, the numerical value of data, check and signaling-information number is sent out by these orderings, and stipulated by the number of cycles of clock signal.
8. according to each method of above claim 1 to 6, when it is applied to the specific digit transmission method of asynchronous type, it is characterized in that transport property is stipulated and stipulated by the Bit Transmission Rate of each byte by the combination of the frame of the byte of each byte of frame at least.
9. according to the method for claim 8, it is characterized in that transport property is at least by following project defined:
The ordering of-first data bit that will be sent out number;
-data detection sign indicating number;
Bit number in-each data item;
-stop the number of bit;
The number of cycles of the clock signal of-each basic time unit.
10. according to the method for claim 8, it is characterized in that in transport property, the number of cycles of the clock signal of each basic time unit is transmitted speed and replaces.
11. the method according to claim 9 or 10 is characterized in that, transport property also comprises the cycle between the byte of minimal amount.
12. the method according to one of claim 9 to 11 is characterized in that, transport property also comprises corresponding to the level value of binary numeral " 0 " (high/low).
13. the method according to one of claim 9 to 12 is characterized in that, transport property also comprises maximum latency.
14. the method according to one of claim 9 to 13 is characterized in that, transport property also comprises new byte transmission attempt.
15. the method according to one of claim 9 to 14 is characterized in that, transport property also comprises maximum data piece size.
16. the electronic intelligence card is characterized in that, its uses each the method according to claim 1 to 15.
17. be used for the terminal of reading of electronic intelligence card, it is characterized in that its uses each the method according to claim 1 to 15.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9903164A FR2791206B1 (en) | 1999-03-15 | 1999-03-15 | METHOD FOR COMMUNICATING THE PARAMETERS OF A DIGITAL TRANSMISSION PROTOCOL |
| FR99/03164 | 1999-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1350678A true CN1350678A (en) | 2002-05-22 |
Family
ID=9543196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00807626 Pending CN1350678A (en) | 1999-03-15 | 2000-03-10 | Method for communicating parameters of a digital transmission protocol |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1163624A1 (en) |
| CN (1) | CN1350678A (en) |
| AU (1) | AU3296100A (en) |
| FR (1) | FR2791206B1 (en) |
| WO (1) | WO2000055796A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442725C (en) * | 2005-12-27 | 2008-12-10 | 华为技术有限公司 | Method for carrying out sampling on device transmission signal |
| WO2017050232A1 (en) * | 2015-09-21 | 2017-03-30 | 天地融科技股份有限公司 | Data transmission method and system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011054637A1 (en) * | 2011-10-20 | 2013-04-25 | Marc Gaston Zacher | Method for configuring an electromechanical lock |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2653290B3 (en) * | 1989-10-18 | 1991-10-04 | Sagem | DEVICE FOR REFERRING TELEPHONE CALLS TO A FACSIMILE OR TO A TELEPHONE SET. |
| EP0583723A1 (en) * | 1992-08-20 | 1994-02-23 | THOMSON multimedia | Card, card reader and method for protocol selection |
| JP3421378B2 (en) * | 1993-03-23 | 2003-06-30 | 株式会社東芝 | Transmission control method |
| FR2758027B1 (en) * | 1996-12-27 | 1999-01-29 | Gemplus Card Int | REMOTE QUERY COMMUNICATION SYSTEM FOR TRANSMITTING INHIBITION COMMANDS |
-
1999
- 1999-03-15 FR FR9903164A patent/FR2791206B1/en not_active Expired - Fee Related
-
2000
- 2000-03-10 EP EP00910921A patent/EP1163624A1/en not_active Withdrawn
- 2000-03-10 CN CN 00807626 patent/CN1350678A/en active Pending
- 2000-03-10 AU AU32961/00A patent/AU3296100A/en not_active Abandoned
- 2000-03-10 WO PCT/FR2000/000592 patent/WO2000055796A1/en active Search and Examination
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442725C (en) * | 2005-12-27 | 2008-12-10 | 华为技术有限公司 | Method for carrying out sampling on device transmission signal |
| WO2017050232A1 (en) * | 2015-09-21 | 2017-03-30 | 天地融科技股份有限公司 | Data transmission method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1163624A1 (en) | 2001-12-19 |
| FR2791206A1 (en) | 2000-09-22 |
| WO2000055796A1 (en) | 2000-09-21 |
| FR2791206B1 (en) | 2001-04-20 |
| AU3296100A (en) | 2000-10-04 |
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