WO2000055796A1 - Method for communicating parameters of a digital transmission protocol - Google Patents
Method for communicating parameters of a digital transmission protocol Download PDFInfo
- Publication number
- WO2000055796A1 WO2000055796A1 PCT/FR2000/000592 FR0000592W WO0055796A1 WO 2000055796 A1 WO2000055796 A1 WO 2000055796A1 FR 0000592 W FR0000592 W FR 0000592W WO 0055796 A1 WO0055796 A1 WO 0055796A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- equipment
- transmission
- data
- digital transmission
- frame
- Prior art date
Links
Classifications
-
- 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
Definitions
- the invention relates to a method for communicating the parameters of a digital transmission protocol between so-called “reference” digital transmission equipment such as an electronic chip card and so-called “follower” digital transmission equipment, for example a terminal. reading, to let him know the characteristic parameters of the desired transmission, it must be effected by taking as reference the performance of the reference equipment, that is to say the most modest.
- each frame successively comprises, from start to finish, frame synchronization signals 10, data signals 12, data control code signals 14 and an end of frame signal 16.
- the synchronization signal is, for example, defined subsequently by rectangular signals 20, 22, 24 and 26 ( Figure 2) the durations of which are respectively one clock cycle, two clock cycles, three clock cycles and a constant number of one to several tens of clock cycles.
- the data signals are, for example, in the form of bytes consisting of binary signals or bits b 0 , b ⁇ , b, b 3 , b, b 5 , b 6 and b 7 ( Figure 3) whose values binary "1" or "0" are stable at characteristic instants IbO, Ibl, Ib2, Ib3, Ib4, Ib5, Ib6 and Ib7, respectively ( Figure 4).
- the signal of the value "1" or "0" of the bit is only present for a determined time and at a determined position in this interval.
- the data control code signals 14 are similar to the data signals in their presentation.
- Two consecutive elementary data or bytes are separated by a time interval or window 30 of fixed and constant duration which is used to transmit signaling signals such as an end of byte and / or end of frame signal 32 or a reception suspension signal 34, known as a data flow control known as "Xoff".
- signaling signals such as an end of byte and / or end of frame signal 32 or a reception suspension signal 34, known as a data flow control known as "Xoff".
- Xoff data flow control
- the invention therefore relates to a method for communicating the parameters of a digital data transmission protocol between so-called “reference” equipment and so-called “follower” equipment so as to allow the follower equipment to adapt to the characteristics.
- transmission of the reference equipment which comprises the following stages consisting in:
- FIG. 1 is a diagram showing the composition or format of a digital transmission frame to which the invention applies
- Figure 2 is a diagram showing, for the frame of Figure 1, a particular form of the frame synchronization signals
- Figure 3 is a diagram showing, for the frame of Figure 1, a composition of the data signals and data control codes as well as the end of frame signaling signal when it exists
- FIG. 1 is a diagram showing the composition or format of a digital transmission frame to which the invention applies
- Figure 2 is a diagram showing, for the frame of Figure 1, a particular form of the frame synchronization signals
- Figure 3 is a diagram showing, for the frame of Figure 1, a composition of the data signals and data control codes as well as the end of frame signaling signal when it exists
- FIG. 1 is a diagram showing the composition or format of a digital transmission frame to which the invention applies
- Figure 2 is a diagram showing, for the frame of Figure 1, a particular form of the frame synchronization signals
- Figure 3 is a diagram showing, for the frame of Figure 1, a composition of
- FIG. 4 is a diagram showing, for the frame of FIG. 1, the synchronization signals, the data signals and the signaling signals of a frame related to the instants of sampling of these signals
- FIG. 5 is a table showing the information which is transmitted by the reference equipment to indicate to the tracking equipment the cycles of a clock signal defining the sampling instants in the equipment following the signals received from the reference equipment
- FIG. 6 is a table showing the information which is transmitted by the reference equipment for indicating uer to the tracking equipment the cycles of a clock signal defining the instants at which the tracking equipment must transmit the signals to the reference equipment
- FIG. 7 is a table showing the information which is transmitted by the equipment of reference to indicate to the tracking equipment another form of frame synchronization signal different from that of FIG. 5, FIG.
- FIG. 8 is a diagram showing an example of composition of a byte in a digital transmission protocol of the asynchronous type
- FIG. 9 is a table showing the information which is transmitted by the reference equipment to the tracking equipment to indicate to it the characteristics of its asynchronous transmission protocol.
- the method for communicating the parameters of a digital transmission protocol from a reference equipment to a tracking equipment will be described in particular in its application to a digital transmission frame which has been presented in the preamble in relation to FIGS. 1 to 4 , these Figures 1 to 4 forming an integral part of the description of the invention.
- the invention will be described in its application to a microcircuit card, also called an electronic chip card, which is capable of communicating with a terminal, such as a cash dispenser, by means of digital signals transmitted by galvanic, radioelectric, inductive or optical connections.
- a terminal such as a cash dispenser
- the microcircuit card will be called “reference equipment” while the terminal will be called “tracking equipment” to indicate that the terminal communicates with the microcircuit card according to a mode or process imposed by the latter which constitutes the reference” .
- the terminal and the microcircuit card are in turn transmitter equipment and receiver equipment and share the same clock signal supplied by the terminal, which allows synchronism.
- the invention applies in particular to the digital transmission method described succinctly in the preamble and which corresponds to the detailed description which was made of it in the aforementioned patent application.
- FIG. 4 shows, in addition to the synchronization, data and signaling signals, the instants at which these signals must be sampled in order to know their value. These times are listed: - Isl, Is2 and Is3 for the synchronization signals,
- the table in FIG. 5 corresponds, for example, to the instants of transmission of the microcircuit card, that is to say the instants at which the terminal must sample the signals received from the microcircuit card. It indicates in the first column the list of sampling instants and in the second column the ranks of the clock cycles at which they must appear. In the second column, the rank is indicated by a number, the capital letter H and L indicating the part of the clock cycle ("Up' ⁇ or" Down "L) in which the sampling must be carried out.
- the table in FIG. 6 then corresponds to the instants of reception of the microcircuit card, that is to say the instants at which the terminal must transmit in order to be understood, on reception, by the microcircuit card.
- Each table also includes an additional line called "Ibyte" to indicate the duration separating the beginnings of two consecutive bytes, this duration encompassing the duration of one byte and that reserved for signaling signals.
- Ibyte an additional line
- the values shown in the tables of Figures 5 and 6 are very similar in that the synchronization and signaling signals are identical while the data and byte duration (Ibyte) signals are slightly different.
- the invention can be implemented with very different synchronization and signaling values on transmission (FIG. 5) and on reception (FIG. 6) but also with very inter-byte data and duration values. different.
- the table in FIG. 7 corresponds to that in FIG. 5 but with a very different synchronization signal in the sense that no rank of clock is indicated for the times Isl, Is2 and Is3, which is materialized with the value "0".
- a synchronization signal means that the terminal has to take account only of the falling edge of the signal transmitted by the microcircuit card, this edge indicating the start of counting of the clock signals. So that the "follower" equipment is able to apply the conventions listed in the tables of FIGS. 5 and 6, the invention provides that the microcircuit card transmits them to the terminal at the latter's request. When a terminal receives the information contained in these tables of FIGS. 5 and 6, it records it so as to use it for any future communication with this microcircuit card or any other card of the same family, upon reception and at the show.
- the terminal recognizes that this is another mode which it does not know, it sends an instruction to read the tables in FIGS. 5 and 6 from the card, save them in its memory and use them to initialize a transmission according to the new mode with this card. Since the information in the tables in FIGS. 5 and 6 is saved in the terminal, the transfer of these tables no longer has any reason to be when the terminal recognizes that it is a card operating according to this new fashion.
- the invention has been described in relation to a microcircuit card capable of communicating with a terminal according to a synchronous mode and a method of digital transmission described in the aforementioned patent application.
- the invention is applicable to an asynchronous mode, in which case the information to be transmitted from the reference equipment to the follower equipment concerns the structure of the frame and not the sampling times.
- Figure 8 is an example of a byte structure in an asynchronous protocol. It includes start bits of byte "DB", data bits BO to B7 in a certain order, starting for example with the most significant bit, ie B7, of the bits "PA” for checking the integrity of the data transmitted, for example the parity, and of the stop bits "STOP". It should be noted that a frame in asynchronous protocol can comprise several bytes.
- the table in FIG. 9 indicates the information that the reference equipment must provide to the tracking equipment so that the latter can correctly analyze the frames it receives from the reference equipment or send frames which are correctly analyzed by the reference equipment.
- the information to be transmitted is, for example: (a) - the rank of the first bit of data transmitted, for example the seventh, that is to say B7,
- the "Reception” column indicates the reception characteristics of the reference equipment, these characteristics having to be implemented at the transmission by the tracking equipment to be understood from the reference equipment.
- the "Transmission” column indicates the transmission characteristics of the reference equipment, these characteristics to be implemented on reception by the follower equipment to receive messages from the reference equipment. Note that some of the characteristics of the table in Figure 9 are not necessary, for example those of rows (b), (f), (h), (i), (j) or (k).
- the minimum number of characteristics to be transmitted are (a), (c), (d), (e), to which must be added (g) or (k).
- the tables in FIGS. 5, 6, 7 and 9 are, for example, in the form of computer files which are transmitted to the tracking equipment at the latter's request, for example via a read instruction from the follower equipment.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU32961/00A AU3296100A (en) | 1999-03-15 | 2000-03-10 | Method for communicating parameters of a digital transmission protocol |
EP00910921A EP1163624A1 (en) | 1999-03-15 | 2000-03-10 | Method for communicating parameters of a digital transmission protocol |
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 |
---|---|
WO2000055796A1 true WO2000055796A1 (en) | 2000-09-21 |
Family
ID=9543196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2000/000592 WO2000055796A1 (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 (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2584539A1 (en) * | 2011-10-20 | 2013-04-24 | Marc Gaston Zacher | Method for configuring an electromechanical lock |
Families Citing this family (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 |
CN106027196B (en) * | 2015-09-21 | 2019-07-30 | 天地融科技股份有限公司 | A kind of data transmission method and system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0583723A1 (en) * | 1992-08-20 | 1994-02-23 | THOMSON multimedia | Card, card reader and method for protocol selection |
US5581708A (en) * | 1993-03-23 | 1996-12-03 | Kabushiki Kaisha Toshiba | Data transmission system using electronic apparatus having a plurality of transmission protocols |
FR2758027A1 (en) * | 1996-12-27 | 1998-07-03 | Gemplus Card Int | REMOTE INTERROGATION COMMUNICATION SYSTEM FOR TRANSMITTING INHIBITION CONTROLS |
Family Cites Families (1)
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. |
-
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
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0583723A1 (en) * | 1992-08-20 | 1994-02-23 | THOMSON multimedia | Card, card reader and method for protocol selection |
US5581708A (en) * | 1993-03-23 | 1996-12-03 | Kabushiki Kaisha Toshiba | Data transmission system using electronic apparatus having a plurality of transmission protocols |
FR2758027A1 (en) * | 1996-12-27 | 1998-07-03 | Gemplus Card Int | REMOTE INTERROGATION COMMUNICATION SYSTEM FOR TRANSMITTING INHIBITION CONTROLS |
Non-Patent Citations (2)
Title |
---|
KRINGS G: "INTELLIGENT MEMORY CHIPS FOR SMART CARDS", COMPONENTS,DE,SIEMENS AKTIENGESELLSCHAFT. MUNCHEN, vol. 29, no. 1, pages 13-17, XP000446879, ISSN: 0945-1137 * |
See also references of EP1163624A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2584539A1 (en) * | 2011-10-20 | 2013-04-24 | Marc Gaston Zacher | Method for configuring an electromechanical lock |
Also Published As
Publication number | Publication date |
---|---|
CN1350678A (en) | 2002-05-22 |
AU3296100A (en) | 2000-10-04 |
EP1163624A1 (en) | 2001-12-19 |
FR2791206B1 (en) | 2001-04-20 |
FR2791206A1 (en) | 2000-09-22 |
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