WO1997039539A1 - Dispositif interactif de jeu comportant un recepteur d'informations radiodiffusees, en particulier un poste radiophonique - Google Patents
Dispositif interactif de jeu comportant un recepteur d'informations radiodiffusees, en particulier un poste radiophonique Download PDFInfo
- Publication number
- WO1997039539A1 WO1997039539A1 PCT/FR1997/000623 FR9700623W WO9739539A1 WO 1997039539 A1 WO1997039539 A1 WO 1997039539A1 FR 9700623 W FR9700623 W FR 9700623W WO 9739539 A1 WO9739539 A1 WO 9739539A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- game
- receiver
- information
- memory
- restitution
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
- H04H20/34—Arrangements for simultaneous broadcast of plural pieces of information by plural channels using an out-of-band subcarrier signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/38—Arrangements for distribution where lower stations, e.g. receivers, interact with the broadcast
Definitions
- the invention therefore provides a game device comprising a receiver, in particular a radio, comprising a communication-receiver interface capable of receiving a set of digital data representative of a game, a keyboard allowing the introduction of external data. , a display and a processing unit connected to the communication-receiver interface, the keyboard and the display.
- the receiver also comprises reception means for receiving a primary broadcast signal containing on the one hand basic information intended to be reproduced at least in audible form, for example radio information constituting a radio broadcast, and on the other hand , at least temporarily, at least one service information.
- the receiver according to the invention finds numerous applications, in particular in the field of radio transmissions and / or reports. That said, the basic information received by the receiver according to the invention is not limited to radio information but can also be, for example, television information intended to be received on a television set.
- the service information is transmitted jointly, at a given time for example, with the basic information but is not intended to be restored in audible form in the same way as said basic information.
- This service information is in fact intended to supplement and / or configure the various digital game data and / or the external data in order to allow the game to run at the receiver. In other words, without this or these service information (s), the correct and / or complete running of the game is impossible.
- the information at the start of the game has for example the effect of allowing the microcontroller to unlock the keyboard of the receiver so as to allow the listener to enter his bet, in this case the score of the match, while the information of The duration of the game has the consequence of indicating to the microcontroller the later instant at which it will send blocking information of the keyboard preventing any entry of external data.
- the parameter displayed on the display may for example be the score entered by the listener.
- the score entered by the listener is then advantageously stored in a result memory which can be present in the receiver itself or, if necessary, in the portable object.
- the function of this result memory is to store at least one parameter relating to the progress of the game, for example the result.
- the device then comprises auxiliary restitution means, for restoring outside the receiver, restitution information comprising at least part of the content of the result memory.
- the auditor can thus have his result validated and obtain, if necessary, his gain.
- auxiliary restitution means can advantageously restore said restitution information in the form of an acoustic signal.
- the auxiliary means of restitution and the main means of restoring basic information may include common elements. It can be in particular the built-in radio speaker intended for broadcasting basic radio information. In this case, the listener can approach the loudspeaker of his radio set to his telephone handset in order to restore the restitution information to a voice server. While various data transmission networks can be envisaged for the connection between the reception device and a voice server, such as for example fiber optic transmission networks using appropriate call stations, it has been considered currently preferable, in particular to use existing infrastructure and for cost reasons, to use a telephone network.
- the auxiliary restitution means advantageously include: - an activation member, for example a push button,
- coding means for example implemented in software within a microcontroller, capable, in response to the actuation of the auxiliary activation member, of delivering, for one bit of said restitution information having the value "one" logic, a logic signal having a high state for a first predetermined duration and a low state for a second predetermined duration.
- the coding means deliver a logic signal having the low state during all of the first and second durations, and - an electro-acoustic transducer, for example a piezoelectric blade, delivering no acoustic signal in response to a logic signal in the low state, and delivering in response to a logic signal in the high state, a monofrequency acoustic signal whose frequency is located substantially in the center of the bandwidth of a telephone line.
- an electro-acoustic transducer for example a piezoelectric blade
- Such an acoustic coding system is similar to an "acoustic barcode”.
- the keyboard can advantageously incorporate the activation member allowing the restitution of the restitution information outside the receiver.
- the receiver may include a detachable module, for example located at the rear of the station, incorporating at least the processing unit (in particular a microcontroller), the auxiliary restitution means, and if necessary , the keyboard.
- the device can comprise at least one portable object comprising a game memory containing said set of digital game data, and an object-communication interface capable of cooperating with the communication-receiver interface.
- the portable object can take various forms, such as credit cards, dominoes, tokens, etc., it is preferably planned to use a memory card, in credit card format, to cooperate with a conventional memory card reader disposed in the receiver.
- the invention thus thus avoids the use of complex software means that would require the direct operation of the game software of the portable object by the processing unit of the receiver without transfer to the memory of the receiver. Provision may be made for the set of game data of the portable object to be read via a serial protocol between the portable object and the receiver. This minimizes the hardware and software means of the portable object.
- the game software is directly operated by the receiver's processing unit directly in its working memory.
- provision may be made for the portable object to include the result memory, the processing unit then communicating said result information to the portable object for the purpose of its storage in the result memory of the portable object.
- the portable object which is intended to contain both the digital game data defining the essential of the game itself, as well as the result information allowing the player to do validate this result so as to possibly receive his gain.
- the portable object constitutes here the transaction element while the receiver is only used for the player only to play and listen to the radio report.
- the set of game data is authenticated.
- the receiver then includes a key memory containing an encryption-result key.
- the processing unit is then able, during cooperation between the receiver and the object, to check authentication of game data stored in the object, storing said set of game data in working memory, and encrypting the result information using the result-encryption key before storing it in the result memory.
- the word “authentifiable” must be interpreted broadly including for example a storage in "clear” digital game data proper together with an authentication certificate obtained from these digital data game, by an appropriate algorithm, or else at least partial encryption of this set, or for example encryption of the authentication certificate.
- the verification of the authentication of the game data set can be carried out before during or after the storage of the latter in the working memory of the box.
- the means for verifying the authentication of this set of game data then preferably include certificate calculation means capable of recalculating said certificate of authentication within the box, from the set of game data, and comparison means capable of comparing the recalculated certificate and the certificate stored in the game memory of the portable object.
- encryption means capable of at least partially encrypting the set of authenticated game data from at least one game encryption key.
- the key memory of the box can contain the game encryption key and the means for verifying the authentication of the set of game data comprising decryption means connected to the key memory.
- the encryption means can encrypt only the authentication certificate. Furthermore, these encryption means can be incorporated into the portable object.
- means are provided for invalidating the set of game data of a portable object and / or means for prohibiting the writing of the information of the result in the memory. of result.
- These means of invalidation and / or prohibition can be implemented in software and incorporated into the processing unit. However, at least one of these means can be incorporated directly into the portable object.
- the device according to the invention also advantageously comprises, in particular when the validation and / or the payment of winnings require a minimum of security, at least one validation station capable of cooperating with the portable object, and comprising means capable of determining said encryption-result key as well as verification-station means able to read the encrypted result information during cooperation between the portable object and the station, and to verify this information of the encrypted result.
- the validation processing carried out by the validation station must make it possible to determine and / or verify the result information from the content of the portable object. Indeed only this memorized content must be authentic to authorize a possible payment of a gain.
- the validation processing carried out by the validation station may include a decryption of the encrypted result information stored in the result memory of the portable object using the encryption-result key.
- FIG. 1 is a schematic front view of a receiver according to the invention
- FIG. 7 and 8 illustrate a restitution of information using an acoustic bar code according to the invention.
- An embodiment of the invention will now be described in more detail, more particularly focused on radio broadcasts, although the invention is not limited thereto, and using a memory card.
- the receiver comprises a housing 14 comprising a reception antenna 3, and on its front face, in addition to the conventional elements of a radio station (such as a loudspeaker 5), a liquid crystal display 2, and a keyboard 4.
- the radio station housing comprises (FIG. 2) a housing 6 comprising a connector 70 and intended to removably receive a module 7 comprising a plurality of actuation keys 8.
- this module 7 is capable of communicating, acoustically, with the microphone of a telephone handset 9.
- a memory card reader 81 capable of cooperating with a memory card 80.
- each portable object 80 for example a card of the smart card type, a token, or a module, comprises, for example within an ASIC (Application Specifies Integrated Circuit) a micro- CPU controller connected via a bus, to an input / output interface ESC of the serial type, to a game memory MJ, as well as to a result memory MR, such as a register.
- ASIC Application Specifies Integrated Circuit
- the game memory MJ for example a read only memory, is intended to receive a set of digital game data, or game software, representative of a particular type of game.
- register MR is intended for its part to receive encrypted result information coming from the box 14 after the progress of at least part of the game.
- the ESC interface includes means of cooperation with the homologous interface 81 of the receiver and with a homologous interface ESS of the station ST (FIG. 6). These cooperation means may consist of a mechanical connector or alternatively of capacitive / inductive, or optical coupling means.
- the internal architecture of the receiver 1 is illustrated very diagrammatically in FIG. 5.
- a conventional high-frequency reception stage delivering the signal received to separation means 18, which can be conventionally an RDS decoder such as that described in European standard EN 50067 (if this transmission standard is used).
- the primary signal delivered by the high frequency stage 17 contains on the one hand the basic information constituting the radio program being broadcast on the air by station 10, and, on the other hand, one or more service information items consisting of data having been inserted into the carrier by the station's RDS coder.
- the decoder 18 therefore extracts the basic information from the primary signal, which is delivered to a conventional low-frequency processing stage before being restored in audible form by the loudspeaker 5 of the radio station.
- This processing unit 20 (for example a microcontroller) is connected via a bus to a working memory MT, accessible in writing and in reading, for example a random access memory (RAM), to a memory of MM program as well as a so-called key memory MC which is a protected memory which can be a part of the memory MM.
- a working memory MT accessible in writing and in reading, for example a random access memory (RAM)
- RAM random access memory
- key memory MC which is a protected memory which can be a part of the memory MM.
- Coding means 22 connected to an activation member 8, such as a push button, are arranged between the processing unit 20 and an electro-acoustic transducer 24, such as a piezoelectric blade.
- the coding means may for example be produced in software form, and it is then advantageously provided that the microcontroller 20 materially and functionally incorporates the coding means 22.
- the module 7 includes the microcontroller, the electro-acoustic transducer 24, as well as the activation member 8 which can be for example one of the keys of the keyboard located on this module . According to the embodiment described with reference to the figure
- each validation station ST comprises a processing block articulated around a processor PR connected to an input / output interface ESS capable of cooperating with the input / output interface of the portable object. Furthermore, the station is connected via an appropriate link, to a central file TB containing information necessary, as will be seen in more detail below, for the verification of the result information contained in the portable object.
- the digital game data set JE On a manufacturing site, the digital game data set JE, forming the game application software, is processed by processing means comprising a well-known authentication certificate calculation algorithm of the SHA (Secure Hash Algorithm) type. of the skilled person. The latter may, however, for more details, refer to publication 180-1 of May 31, 1994 distributed by the FIPS (Federal Information Processing Standards). These calculation means determine a CTF authentication certificate from logical functions operating on the bits of the digital game data. Thus, for a block of 1 kilobyte of application, the authentication certificate comprises for example 120 bits.
- SHA Secure Hash Algorithm
- the portable object is then ready to be distributed to the public.
- a player can obtain such a receiver from a validation station of the ST station type. It could also be conceived that it only obtains from the validation station ST the detachable module 7 of the receiver which would then include the key memory MC.
- the box and the station are made to cooperate by means of respective communication interfaces (not shown in the figures for simplification purposes) so as to read the encryption-box key Kf stored in the memory of MC key.
- These interfaces can in particular be of the capacitive / inductive coupling type. They can also be of the mechanical type with connectors.
- the PR processor of the validation station knowing the encryption key-game Km, (for example stored in the central file
- the processing unit reads the digital game data as well as the encrypted authentication certificate CTFc stored in the portable object, via a serial protocol via the interface 81.
- the processing unit processing 20 then recalculates an authentication certificate from the digital game data JE, decrypts the encrypted authentication certificate CTFc using the encryption key-game Km, compares the recalculated authentication certificate and the certificate d authentication stored to verify the authenticity of the game software.
- the digital game data set JE is stored in the working memory MT of the box so that it can be used subsequently and directly by the processing unit 20 for the purpose of executing the game.
- the receiver is suitable for play and the player can play using his receiver subject to obtaining the service information.
- the carrier broadcast by the transmitting station comprises at a given time, service information indicating the start of the game and which corresponds to the oral invitation to bet, issued by the host of the program.
- This service information is received by the processing unit which then authorizes the introduction of external data (in this case the score to be bet) via the keyboard 4.
- the score entered by the listener is advantageously displayed on the display 2.
- the radio carrier transmits other service information materializing the end of the game.
- the microcontroller 20 blocks any action on the keyboard 4, that is to say, in practice, ignore any data that may be entered by the keyboard.
- this result memory will contain the score entered by the auditor.
- the listener can then extract the detachable module from its housing 6 and activate the activation member 8.
- Such an actuation has the effect of sending a signal command to the processing unit so that it extracts from the saved memory the restitution information constituted in this case of the score entered.
- This restitution information is then coded by the coding means 22 in the form of an electrical signal delivered to the transducer 24. The latter then delivers an acoustic signal which is transmitted to the voice server 16 of the receiving station via telephone line 15, after call by telephone handset 9.
- the voice server 16 of course comprises decoding means capable of deducing the restitution information, namely the bet score, which has been transmitted by the telephone link. It is particularly advantageous, in particular in order to avoid disturbing the transmission of the data with parasitic frequencies, to use a coding of the information of restitution in the form of an acoustic bar code.
- the coding means 22 are able, for a bit of logical value "1" of the restitution information, to deliver a logic signal having a high state for a first predetermined duration and a low state for a second predetermined duration. On the other hand, for a bit of logical value "0", the coding means deliver a logic signal having the low state during all of the first and second durations.
- the transducer 24 will deliver no signal acoustic signal in response to a logic signal in the low state, and, in response to a logic signal in the high state, will deliver a monofrequency acoustic signal whose frequency is located substantially in the center of the bandwidth of a telephone line.
- a frequency of 2048 Hz will therefore preferably be used, which is moreover easily usable from a conventional 4-bit microcontroller, since this frequency is a multiple of two.
- the logic signals SI and S2 corresponding to bit codings having respectively logical values "1" and "0" are illustrated in FIG. 7.
- the total duration T of transmission of a bit is 15.625 ms, which corresponds to about three times the time constant of a carbon microphone fitted to a telephone set.
- the duration Tl during which the logic signal is in the high state is taken equal to 1 1, 71875 ms, while the duration T2 is equal to 3.90652 ms.
- Data transmission takes place by sending successive frames.
- the reception, at the local server, is then of synchronous type, that is to say that there is a synchronization carried out on the header of each transmitted frame.
- This synchronization allows in particular the adjustment of the reception levels by an automatic gain control device, the detection of the transmission speed, and the setting of the reception means.
- the adjustment of the reception level by an automatic gain control device allows good reception of the frames and compensates for the loss of levels due to the carbon microphone, or by means of amplification of a signal produced by an electronic microphone.
- a transmission frame is illustrated in FIG. 8.
- the duration of the header of a frame is 575 ms and is broken down into a logic signal S3 in the high state for a duration T3 of 400 ms maximum allowing automatic control. gain, followed by a low signal S4 for a duration T4 of 50 ms allowing the setting of the server receiver, finally followed by a synchronization byte S5 comprising an alternation of bits 1 and bits 0 for 125 ms.
- the signals S I and / or S2 corresponding to the restitution information are then transmitted.
- the listener can be invited, instead of making an acoustic restitution, or else in addition to this acoustic restitution, to go and validate his result with a station validation ST.
- the result information is encrypted by the processing unit 20 using an encryption-result key which is, in this case, identical to the encryption key set Km.
- an encrypted result information IFRc which is transferred via the respective interfaces of the housing and of the portable object so as to be stored in the result memory MR of the object.
- the player can then go to validate his result so as to possibly touch his gain.
- the player removes the portable object from the receiver, and communicates it to a validation station, which can be the same as that from which he obtained his receiver, or another.
- Cooperation is then established between the portable object and the station.
- the processor PR of the station then reads from the result memory of the portable object the encrypted result information IFRc and the decryption means of this station, for example of the DES type, knowing the encryption-game key Km, decrypt IFRc information so as to obtain IFR result information and allow payment of the gain.
- This alteration consists for example in a modification of the value of at least some of the bits of the authentication certificate.
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97919494A EP0894376A1 (fr) | 1996-04-15 | 1997-04-09 | Dispositif interactif de jeu comportant un recepteur d'informations radiodiffusees, en particulier un poste radiophonique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR96/04675 | 1996-04-15 | ||
FR9604675A FR2747526B1 (fr) | 1996-04-15 | 1996-04-15 | Dispositif interactif de jeu comportant un recepteur d'informations radiodiffusees, en particulier un poste radiophonique |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997039539A1 true WO1997039539A1 (fr) | 1997-10-23 |
Family
ID=9491197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1997/000623 WO1997039539A1 (fr) | 1996-04-15 | 1997-04-09 | Dispositif interactif de jeu comportant un recepteur d'informations radiodiffusees, en particulier un poste radiophonique |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0894376A1 (fr) |
FR (1) | FR2747526B1 (fr) |
WO (1) | WO1997039539A1 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994022243A1 (fr) * | 1993-03-15 | 1994-09-29 | Macrovision Corporation | Recepteur radio de diffusion d'informations mettant en ×uvre une sous-porteuse |
WO1995028798A1 (fr) * | 1994-04-19 | 1995-10-26 | Scientific-Atlanta, Inc. | Dispositif et procede d'interactivite d'abonne dans un systeme de television |
-
1996
- 1996-04-15 FR FR9604675A patent/FR2747526B1/fr not_active Expired - Fee Related
-
1997
- 1997-04-09 WO PCT/FR1997/000623 patent/WO1997039539A1/fr not_active Application Discontinuation
- 1997-04-09 EP EP97919494A patent/EP0894376A1/fr not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994022243A1 (fr) * | 1993-03-15 | 1994-09-29 | Macrovision Corporation | Recepteur radio de diffusion d'informations mettant en ×uvre une sous-porteuse |
WO1995028798A1 (fr) * | 1994-04-19 | 1995-10-26 | Scientific-Atlanta, Inc. | Dispositif et procede d'interactivite d'abonne dans un systeme de television |
Also Published As
Publication number | Publication date |
---|---|
EP0894376A1 (fr) | 1999-02-03 |
FR2747526B1 (fr) | 1998-06-26 |
FR2747526A1 (fr) | 1997-10-17 |
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