EP0897639A1 - Procede et systeme interactifs de transmission d'informations entre un recepteur et un serveur - Google Patents
Procede et systeme interactifs de transmission d'informations entre un recepteur et un serveurInfo
- Publication number
- EP0897639A1 EP0897639A1 EP97921917A EP97921917A EP0897639A1 EP 0897639 A1 EP0897639 A1 EP 0897639A1 EP 97921917 A EP97921917 A EP 97921917A EP 97921917 A EP97921917 A EP 97921917A EP 0897639 A1 EP0897639 A1 EP 0897639A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- information
- time
- initialization
- restitution
- identifier
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
Definitions
- the invention relates to the interactive transmission of information between a receiver reproducing a radio broadcast, an autonomous unit having at least one manually operable control element, and a validation station.
- the invention finds a particularly advantageous but nonlimiting application in the interactive connection between the host of a television program offering objects for sale, a potential buyer discovering these objects on his television set, and a voice server. intended to record potential viewer commands.
- the invention aims to provide them.
- one of the characteristics of the invention consists in ensuring rigorous temporal synchronism between the various constituents of the interactive system, so as to ensure the reliability of the system by avoiding in particular errors between the command carried out by the viewer in view objects on its receiver and the object it will finally receive from a command validation station, to which it is not physically connected, and distinct from the transmitting station offering said objects.
- time initialization information is incorporated into the radio broadcast as well as at least one specific information intended to be restored within a predetermined time range and time defined with respect to said information. of time initialization.
- This specific information is associated with a specific event occurring during the broadcast.
- each specific event may consist in filming for a given period of time a specific object intended to be possibly acquired by a holder of the box who watches the broadcast on his television set.
- Each specific information restored then advantageously consists of the image of the corresponding object on the screen of the television receiver.
- the time range associated with each image is thus temporally delimited with respect to two temporally spaced shots of the corresponding object.
- validation station for example a voice server
- validation information containing an initialization time indication corresponding to the time of restitution of said time initialization information, auxiliary time indications representative of the time limits of the range corresponding to the occurrence of the specific event, and an identifier of said event considered.
- the validation station is thus calibrated "temporally" with respect to the time initialization information restored during the radio broadcast and from which the time periods during which the events considered are defined. , for example the shots of the various objects presented. All the time indications contained in the validation station can be taken from the time schedule which accompanies any radio broadcast and which is representative of its progress.
- these time indications can be stored in the memory of the server before the broadcast of the broadcast on the television set, for example by an appropriate computer network.
- the time information in the schedule of the broadcast can be sent in real time, also via a computer network, to the voice server.
- a time base is initialized within said unit when the time initialization information is returned by the receiver.
- This initialization can consist, during the restitution by the receiver of the time initialization information, to trigger (initialize) a time counter.
- the value of the current instant defined by the time base is then stored in the housing, on each actuation of the control element.
- restitution information containing an identifier of the box and the stored values of the various current instants.
- the owner of the box will activate the control element each time that he is interested in the acquisition of an object whose image appears on his television receiver. .
- an analysis processing of the received restitution information received is carried out within the latter, with respect to the stored validation information.
- This analysis processing includes the analysis of each current value received with respect to the initialization time indication and the auxiliary time indications, so as to optionally associate the identifier of the event, for example the identifier of the object presented, with the box identifier.
- the initialization time indication contained in the memory of the validation station may be the time at which the time initialization information was restored on the receiver, while the auxiliary time indications materializing the time ranges during which the objects are filmed can be either the exact times delimiting these ranges, that is the durations separating the limits of these ranges with respect to the time at which the initialization took place.
- the analysis processing will therefore consist generally of testing whether one of the current values received by the station from the box is within a time range. If this is the case, there will then be a correspondence between the identifier of the event, that is to say the identifier of the object and the identifier of the box from which the address of the viewer can to be known. The corresponding object can then be sent to its recipient.
- the invention applies in theory to a radio broadcast that can only contain a single specific item of information (object) associated with a single time range, a plurality of specific information intended to be respectively restored in predetermined time ranges and temporally defined with respect to said time initialization information. Each specific information is associated with a specific event occurring during the broadcast.
- Auxiliary time indications representative of the time limits of each range corresponding to the occurrence of the specific event occurring therein and to the identifier of each event are transmitted to the validation station.
- Each current value received with respect to the initialization time indication and the auxiliary time indications is analyzed within the validation station, so as to optionally associate at least one event identifier with the box identifier.
- the invention is therefore remarkable in that it avoids storing in the box all the characteristics of the objects that the viewer wishes to acquire, as well as all the temporal characteristics of the appearance of these objects on the screen. Some of this information is transferred to the server memory, which considerably reduces the memory size of the object's memory. Furthermore, the fact of triggering the time base only at a given instant, corresponding to the restitution of the time initialization information, and of storing only current values counted from this triggering instant, allows, in combination with the time references transmitted to the validation station, to dispense with installing in the object a clock indicating the universal time, with all the problems of time drift which are added to it, and to ensure in a simple way a rigorous time synchronism between the broadcast, the box and the server.
- broadcast applies to the broadcast of sound (for example intended to be received on a radio) and / or television information, or even more generally to any information broadcast by radiofrequency waves.
- the housing is equipped with an initialization element which can be actuated manually and the time base, for example the counter, is initialized by manual actuation of the initialization element during the restitution of said initialization time information.
- this initialization element can be the same as the control element allowing the user to store the current values of the counter.
- the initialization time information restored on the receiver can simply be an oral invitation from the host of the radio program in response to which the user of the box actuates the element d 'initialization.
- this specific sound signal can advantageously consist of a carrier signal which has been replaced, over a predetermined period, by an auxiliary signal which is obtained from a chosen combination of the carrier signal and a signal d sound echo of this carrier signal, the choice of the combination being linked in a one-to-one manner to the temporal initialization information inserted within the carrier signal.
- the principle of reverberation of the sound signal is used here.
- the transmission proposed here is therefore also interpreted in particular as comprising the addition, in a predetermined and one-to-one manner with respect to the bits of the initialization information to be coded, of reverberations controlled in the sound signal for coding said bits.
- a person skilled in the art may refer to French patent No. 931 1858, the content of which is, for all practical purposes, incorporated into the present description.
- the combination of the carrier signal and the sound echo signal of the carrier signal is determined, then the time initialization information is deduced therefrom.
- the transmission identifier may be incorporated into the specific sound signal at the same time as the time initialization information. This being so, payment can be made, more simply, for this program identifier to be communicated orally during the radio program and for it to be entered manually by the owner of the box by means of a keyboard.
- some of the keys on the keyboard can also constitute the various control elements and initialization manually operable by the user.
- the invention also relates to an interactive information transmission system comprising:
- an information receiver for receiving a broadcast signal relating to a program and for rendering this program, the restored content comprising time initialization information as well as at least one specific information restored in a predetermined time range and time defined with respect to to said time initialization information, this specific information being associated with a specific event occurring during transmission,
- a box comprising a time counter which can be initialized in response to the time initialization information restored by the receiver, a memory containing a box identifier, a control element capable of being actuated manually by a user of the box, a means of control for storing in said memory the current value of the counter on each actuation of the control element, and controllable restitution means for restoring, outside the case, restitution information containing at least the case identifier and each value counter current stored in memory, and
- a validation station for receiving the restitution information, this validation station comprising a memory station capable of containing, for said transmission considered, a validation information containing a time initialization indication corresponding to the restitution instant of said time initialization information, the auxiliary time indications representative of the time limits of the range corresponding to the occurrence of the specific event, and an identifier of said event considered.
- the station also comprises processing means for carrying out, for each current counter value received, a correspondence processing between this value and said auxiliary time indications, taking into account the initial time indication, so as to possibly associate the event identifier with the box identifier.
- Another subject of the invention is an autonomous box, usable for interactive transmission of information between a receiver reproducing a radio broadcast, the box and a validation station.
- This autonomous unit includes a time counter which can be initialized in response to time initialization information restored by the receiver, a memory containing a unit identifier, a control element capable of being actuated manually by a user of the unit, a means of control. for storing in said memory the current value of the counter on each actuation of the control element, and controllable restitution means for restoring outside the case a restitution information containing at least the case identifier and each current value counter stored in memory.
- - coding means for example produced in software within a microcontroller, able, in response to actuation of the activation element, to deliver, for a bit of said restitution information having the logic value "1", a logic signal having a state high 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 loqique signal in the low state, and delivering in response to a logic signal in the high state, a mono acoustic signal -frequency whose frequency is located substantially in the center of the bandwidth of a telephone line.
- an acoustic coding system is similar to an "acoustic barcode”.
- FIG. 1 is a very schematic block diagram of an interactive information transmission system according to the invention
- FIG. 2 illustrates in more detail but still schematically the internal architecture of an autonomous housing according to the invention
- FIG. 3 schematically illustrates an operation of the system according to the invention
- Figures 4 and 5 illustrate a restitution of information using an acoustic barcode according to the invention.
- the interactive system SYS comprises an emission station STM capable of broadcasting an ERD emission, in particular a television emission, produced on a television set very schematically represented under the reference PTV.
- an emission station STM capable of broadcasting an ERD emission, in particular a television emission, produced on a television set very schematically represented under the reference PTV.
- CM cameras intended to film objects, here two, OB I and OB2, capable of being acquired by a viewer watching the ERD broadcast on his RCP television set.
- a validation station SV for example a voice server, is connected to the television set PTV via a data transmission network RTD, in particular a conventional computer data transmission network. More specifically, the SV voice server has an interface
- the voice server is also articulated around MG management means which can be incorporated in software within a computer.
- management means interact with a memory station BD such as a database, as well as with a second interface INT2 connected to a telephone network, such as the switched telephone network PSTN.
- a memory station BD such as a database
- a second interface INT2 connected to a telephone network, such as the switched telephone network PSTN.
- a telephone set On this PSTN switched telephone network, a telephone set is also connected, the CT handset of which is capable of cooperating acoustically with an electro-acoustic transducer, such as a piezoelectric blade BZ, of an autonomous LV box fitted on the 'one side of a CL keyboard.
- an electro-acoustic transducer such as a piezoelectric blade BZ
- the hardware architecture of the BT box is articulated around a microcontroller MC incorporating in software the various functional means of the box.
- a microcontroller MC incorporating in software the various functional means of the box.
- ASIC specific integrated circuit
- a memory MM such as a random access memory
- a time counter CMT such as a random access memory
- the keyboard CL the transducer BZ
- the memory MM contains specific digital data corresponding to an identifier IDB of the box. All of these elements are supplied from ALM supply means such as batteries.
- the microcontroller also incorporates in particular the software for managing the operation of the keyboard.
- FIG. 3 On the top of Figure 3, there is shown the time diagram representative of the progress of the broadcast. This starts at DE time and ends at FE time.
- the presenter invites viewers equipped with a box according to the invention, to actuate the control element of their box so as to initialize the internal counter thereof.
- This oral invitation constitutes here the restitution of the temporal initialization information.
- the host will specifically invite viewers to order or not the first object OB I.
- the camera CM will then fix the object OB I during a time range PLT1 starting at the time TPI and ending at the time TP2.
- the image IM1 of the object is then restored throughout the duration of the time range PLT1 on the screen of RCP receivers.
- the time range PLT2 associated with the object OB2 and delimited by the time instants TP3 and TP4 is temporally spaced from the range PLT1. During this entire time range PLT2, the image IM2 of the object OB2 is reproduced on the screen of the receivers.
- the time instants TO, TPI, TP2, TP3 and TP4 are then transmitted to the voice server for the purpose of storage in the database BD. These values then constitute respectively the initialization time indications as well as the auxiliary time indications.
- identifiers LDI and LD2 of the objects presented as well as an identifier LDM of the program are also stored in the memory BD.
- the viewer equipped with its box, activates one of the keys on the keyboard at the presenter's invitation TO time, so as to initialize the internal counter CMT of the box. This counter counts or counts down for example at the rate of one second.
- the viewer When the IM1 image appears on the television screen, the viewer, who is supposed to be interested in the object presented, actuates the same key or another, which has the effect of '' send a signal to the micro-controller of the box so that it stores the current value of the countvir CMT in the memory MM.
- the current value T10 stored in the memory MM is necessarily inside the time range PLT1 during which the object OB I is presented. If the viewer is also interested in the object OB2, it repeats the same operations at time T20 which is located within the time range PLT2.
- the memory MM therefore contains, in addition to the box identifier IDB, the values T10 and T20.
- This memory MM also contains the identifier of the broadcast program, which could be indicated orally by the presenter, for example between the time instants TO and TPI, and which could then be entered manually by the user by means of the keyboard.
- the viewer picks up the CT handset from his telephone set and dials the telephone number of the SV server.
- the viewer actuates, for example, another key on the keyboard, which has the effect of restoring outside the case a restitution information item composed here of the case identifier, of the current values T10 and T20, as well as the LDM identifier of the program.
- the microcontroller comprises coding means produced in software and intended to restore outside the housing the restitution information in coded form. These coding means are activated in response to the actuation of the corresponding key on the keyboard. These coding means allow coding of the restitution information in the form of an acoustic bar code, which in particular makes it possible to avoid disturbing the transmission of the data with parasitic frequencies.
- the coding means are capable, for a bit of logic value 1 of the restitution information, of delivering 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.
- the BZ transducer will not deliver any 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 single frequency acoustic signal whose frequency is 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 logic values 1 and 0 respectively, are illustrated in FIG. 4.
- the total transmission time T of a bit is 15.625 ms, which corresponds to approximately 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.
- the signal SI is shown for the sake of simplification in FIG. 4, and we will nevertheless speak of a high state for the signal SI for the duration T1 although in reality, during this duration, the signal consists of a plurality of peaks at the frequency of 2048 Hz.
- Data transmission takes place by sending successive frames.
- Reception at the local server level is then of the type synchronous, 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. 5.
- the duration of the header of a frame is 575 ms and is broken down into a logic signal S 3 in the high state for a duration T3 of 400 ms maximum allowing the control.
- the homologous means allowing the decoding of the restitution information are incorporated in particular in the LNT2 interface of the server SV.
- the management means of the server After reception by the interface INT2 of the server SV, of the acoustic signal containing the information of restitution, and extraction of the latter from this signal, the management means of the server extract from the database BD the initial time indication TO and the auxiliary time indications TP1-TP4, taking account of the LDM transmission identifier received, and then analyze within which time range the current values received from the box are located. When a current value can be associated with a time range, the management means then matches the identifier associated with the corresponding object with the box identifier.
- the initialization time information and / or the program identifier can be transmitted to the unit at time TO by means of a specific sound signal, for example a sound signal comprising different tones representative of a digital code of the information transmitted. It is also possible to provide for inserting this information within a carrier sound signal, such as that described in French patent n ° 931 1858. The insertion of this information then consists in replacing, over a predetermined period, with the sound signal carrier, a combination of this carrier signal and a sound echo signal of this signal, said combination being unequivocally associated with the digital content of the information to be transmitted.
- the LV box is advantageously equipped with MRS means for specific reception of this sound signal such as for example those described in French patent n ° 9311858.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9605861A FR2748622B1 (fr) | 1996-05-10 | 1996-05-10 | Procede et systeme interactifs de transmission d'informations entre un recepteur, en particulier un recepteur de television, un boitier autonome, et une station de validation, en particulier un serveur vocal |
FR9605861 | 1996-05-10 | ||
PCT/FR1997/000776 WO1997043858A1 (fr) | 1996-05-10 | 1997-04-30 | Procede et systeme interactifs de transmission d'informations entre un recepteur et un serveur |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0897639A1 true EP0897639A1 (fr) | 1999-02-24 |
Family
ID=9492026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97921917A Withdrawn EP0897639A1 (fr) | 1996-05-10 | 1997-04-30 | Procede et systeme interactifs de transmission d'informations entre un recepteur et un serveur |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0897639A1 (fr) |
FR (1) | FR2748622B1 (fr) |
WO (1) | WO1997043858A1 (fr) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL94519A (en) * | 1989-06-13 | 1993-07-08 | Tv Answer Int Inc | Satellite television communication system for audience polling and processing answers |
EP0615680A1 (fr) * | 1993-03-17 | 1994-09-21 | WEISS, Günther | Appareil de sarclage dans des lieux comme rues, places et parcs |
FI96733C (fi) * | 1993-06-18 | 1996-08-12 | Nokia Telecommunications Oy | Tilaajaverkkojärjestely tilaajien liittämiseksi yleiseen puhelinverkkoon |
-
1996
- 1996-05-10 FR FR9605861A patent/FR2748622B1/fr not_active Expired - Lifetime
-
1997
- 1997-04-30 EP EP97921917A patent/EP0897639A1/fr not_active Withdrawn
- 1997-04-30 WO PCT/FR1997/000776 patent/WO1997043858A1/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9743858A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2748622A1 (fr) | 1997-11-14 |
WO1997043858A1 (fr) | 1997-11-20 |
FR2748622B1 (fr) | 1998-11-06 |
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