FR3134268A1 - Local off-hook method in a digital radio receiver - Google Patents

Abstract

The invention relates to a local off-hook method in a digital radio receiver, the method comprising steps of receiving a digital radio stream comprising at least one address of a resource associated with a station currently being listened to, configuring a request from one of at least one addresses received, the request comprising at least one element characteristic of the location of the receiver, transmission of the configured request to a server, obtaining local content to be restored from the response to the transmitted request, the content being associated with a particular restitution instant, and restitution of the local content obtained at the restitution instant with which it is associated. The invention also relates to a device adapted to implement such a method. Figure 2.

Description

Local off-hook method in a digital radio receiver

The invention belongs to the field of broadcasting digital radio programs and relates in particular to a method and a radio reception device adapted to implement a local drop-out for a station being listened to broadcasting a national program.

Prior art

Regional or local dropout is a practice that allows a national station to broadcast one or more programs, such as local news or advertisements, exclusively in a given geographic area. Conventionally, in FM broadcasting, the program transmitted from the national station to local broadcasters is accompanied by a synchronized signal including local start and end instructions. Upon receipt of the start signal, a local broadcaster can switch to broadcasting a local advertisement.

Local dropout poses particular problems in the case of digital broadcasting such as DAB (Digital Audio Broadcast). Indeed, programs are generally broadcast on a national multiplex, that is to say that the programs of several stations are multiplexed into a single data stream. To achieve local dropout, it is then necessary to demultiplex the streams at the terrestrial transmitter before remuliplexing them by including the local program to be broadcast. Such a technique requires the deployment of expensive technical means and is therefore not implemented. In addition, the broadcast of local programs by a terrestrial transmitter can cause reception problems in adjoining areas, in which the broadcast by separate terrestrial transmitters overlap, because the audio content is not identical for a given station. This last problem is particularly annoying when the radio receiver is on board a vehicle that has to pass through different broadcast coverage zones.

Thus, there is a need to achieve local dropout in the context of digital broadcasting, which does not present the aforementioned disadvantages.

For this purpose, a local off-hook method is proposed in a digital radio receiver, the method comprising the following steps:

• Receiving a digital radio stream comprising at least one resource address associated with a station currently being listened to,
• Configuration of a request from one of the at least one addresses received, the request comprising at least one element characteristic of the location of the receiver,
• Transmission of the configured request to a server,
• Obtaining local content to be rendered from the response to the transmitted request, the content being associated with a particular restitution time,
• Restitution of local content obtained at the restitution time with which it is associated.

Digital radio stations broadcast programs that may be accompanied by metadata transmitted in the digital radio stream. It is proposed to use this vector to transmit to radio receivers a particular URL (Universal Resource Locator). The URL is configured by the radio station to allow a radio receiver to transmit to a server a geographical indication representative of its location. The response transmitted by the server allows the receiver to obtain content, for example an advertising spot or news, which is personalized according to said geographical location of the receiver and associated with a time and date of restitution. The radio receiver can then download the content and play it back at the scheduled time and date, in place of the content broadcast by the station. The date and time of restitutions are determined by the station so as to correspond to the date and duration of broadcast of a national program, so that one can replace the other without disrupting the program schedule.

The method thus allows the broadcast of a geographically targeted program, such as an advertisement, without the need to implement a costly method at the terrestrial transmitter, and without modifying the existing broadcast infrastructure. In addition, the method does not cause reception problems in the overlapping areas of adjacent terrestrial transmitters.

According to a particular embodiment, the configuration step comprises the addition, in the request, of a destination address selected from the at least one addresses received and of location data obtained from a tracking device. geolocation.

Such an arrangement is particularly advantageous in the case of a radio receiver on board a vehicle. Such an on-board receiver being by definition mobile, the fact of configuring the request by adding, for example, a geographical location ensures that the local content will remain relevant whatever the movements of the vehicle.

According to a particular embodiment, the step of obtaining content to be broadcast includes:

• receiving a response to the transmitted request, the response comprising at least one address of local content selected according to a geolocation of the receiver,
• downloading said content.

The transmitted request including data characteristic of the location of the receiver, the receiver receives in response a message comprising at least the address of personalized content according to its location. Optionally, the response message can also include an instant or a time slot suitable for rendering the content. The receiver can then download the content into a memory.

According to a particular embodiment, the method further comprises a step of transmitting to a server a message comprising an indication that the local content has been restored.

In this way, the server can count the number of renditions of a program or local advertisement and offer different content when a predefined number of renditions is reached. It is thus possible to better target the programs broadcast during a local dropout.

According to a particular embodiment, the method is such that the at least one address of a resource is received in a block of program information included in the digital radio stream.

It is thus proposed to use a service data block, for example an SPI block (for Service and Program Information in English) to broadcast to the receivers an address making it possible to obtain geographically targeted content. In this way, the process takes advantage of existing mechanisms and can be implemented without modifying the digital broadcast chains in place.

According to a particular embodiment, the method is such that the at least one addresses received are each associated with a geographical zone in the digital radio stream, the configuration step comprising the following steps:

• Obtaining receiver location data,
• Selection, among the at least one addresses received, of an address associated with a geographical area corresponding to the location of the receiver, and
• Addition to the query of a destination address corresponding to the selected address.

Thus, each address included in the received digital radio stream is for example associated with a particular geographical area. In this way, a radio receiver implementing the method in question can select the address corresponding to its own location and configure a request from this address. The selected address is then characteristic of the location of the receiver and allows the receiver to obtain geographically targeted content.

Such an arrangement is particularly advantageous in the case of a radio receiver on board a vehicle. Such an on-board receiver being by definition mobile, the fact of configuring the request by adding, for example, a geographical location ensures that the local content will remain relevant whatever the movements of the vehicle.

According to a particular embodiment, the method is such that the at least one resource addresses are each associated in the digital radio stream with a restitution schedule received in a data structure conforming to a selective message transmission service.

It is thus proposed to use a filtered application service, for example a FIS service (for Filtered Information Service in English) to broadcast to selected receivers one or more addresses making it possible to obtain geographically targeted content. Such a service makes it possible in particular to specifically target a set of receivers, for example according to the model of the receiver or its manufacturer. It is thus possible to further target the content broadcast while taking advantage of existing mechanisms.

According to another aspect, the invention relates to a local off-hook device in a digital radio receiver comprising a processor and a memory in which program instructions adapted to configure the processor to implement the following steps are recorded:

• Receiving a digital radio stream comprising at least one resource address associated with a station currently being listened to,
• Configuration of a request from one of the at least one addresses received, the request comprising at least one element characteristic of the location of the receiver,
• Transmission of the configured request to a server,
• Obtaining local content to be rendered from the response to the transmitted request, the content being associated with a particular restitution time,
• Restitution of local content obtained at the restitution time with which it is associated.

The invention also relates to a radio receiver comprising a device as described above, as well as to a vehicle comprising such a radio receiver.

Finally, the invention relates to an information medium comprising computer program instructions configured to implement the steps of a local stall method as described above, when the instructions are executed by a processor.

The information medium may be a non-transitory information medium such as a hard disk, a flash memory, or an optical disk for example.

The information carrier can be any entity or device capable of storing instructions. For example, the medium may include a storage means, such as a ROM (Read Only Memory), RAM (Random Access Memory), PROM (Programmable Read Only Memory), EPROM (Eraseable Programmable Read Only Memory), a CD ROM. or even a magnetic recording means, for example a hard disk.

On the other hand, the information carrier may be a transmissible medium such as an electrical or optical signal, which may be carried via an electrical or optical cable, by radio or by other means.

Alternatively, the information carrier may be an integrated circuit in which the program is incorporated, the circuit being adapted to execute or to be used in executing the methods in question.

The various aforementioned embodiments or characteristics can be added independently or in combination with each other, to the stages of the local unhooking process. Vehicles, radio receivers, devices, and information carriers have at least advantages similar to those conferred by the process to which they relate.

Brief description of the figures

Other characteristics and advantages of the invention will become apparent on reading the description which follows. This is purely illustrative and must be read in conjunction with the appended drawings in which:

There represents an environment suitable for implementing the invention according to a particular embodiment,

There is a flowchart on which the main stages of a local stalling process according to a particular embodiment are represented, and

There is a flowchart on which the main stages of a local stalling process are represented according to a particular embodiment, and

There represents the architecture of a device adapted to implement the local dropout method according to a particular embodiment.

detailed description

There illustrates an architecture adapted to implement the local dropout method according to a particular embodiment.

There shows a digital terrestrial radio broadcast system 100. The broadcasting system 100 is capable of broadcasting programs according to a terrestrial digital radio standard, for example DAB (Digital Audio Broadcast), DAB+, or even CDR (Convergent Digital Radio). The programs and associated metadata are produced by stations 101, 102 and 103 before being encoded and multiplexed by a multiplexer 104.

The multiplex produced by the multiplexer 104 is transmitted to a satellite 105 which rebroadcasts it to a plurality of terrestrial broadcasting stations such as the station 106.

Station 106 receives the multiplex broadcast by satellite 105 and rebroadcasts it in its environment. In this way, the vehicle 107 can receive and decode the multiplex to select and reproduce a program from a particular station. For this, the vehicle 107 includes a radio frequency receiver conforming to the digital terrestrial radio broadcasting standard in question.

The vehicle 107 also includes means of communication, such as a wireless network interface, allowing it to exchange data with a server 108 of a communication network 109 via a cellular access network 110, for example. example a 2G, 3G, 4G, 5G, WiFi or WiMax access network. The vehicle's radio frequency receiver 107 can advantageously use the vehicle's communication means to access additional content associated with the programs currently being listened to. The receiver is called “hybrid” because it has both means of receiving broadcast programs and means of communication allowing it to access a communication network such as the Internet.

The stations 101 to 103 include communication means which allow them to connect to the communication network 109 and to exchange data with the server 108.

The server 108 is for example a server accessible through the Internet network from which the stations 101 to 103 can make additional content available to users. Thus, the vehicle 107 can access additional information on a program currently being listened to by querying the server 108.

A first particular embodiment will now be described in relation to the .

There is a flowchart showing the main stages of a local stalling process according to a particular embodiment.

During a first step 200, the digital terrestrial radio receiver (RNT) of the vehicle 107 receives a digital radio stream transmitted by a terrestrial broadcast station 106. The digital radio stream includes for example a multiplex conforming to the DAB standard. The digital radio stream is demultiplexed and decoded by the radio receiver so that the program transmitted by a particular station, such as station 101, can be rendered.

The received multiplex includes an SPI data block (for Service Program Information in English, defined in the standard ETSI TS 102 371 and/or ETSI TS 102 818 V3.3.1), in which data incidental to the programs are broadcast.

The SPI service provides daily broadcast schedules with detailed information about each program event, such as start and end times, program titles or descriptions. The SPI service also makes it possible to provide information relating to stations, such as station names and identifiers, reception frequencies or even multimedia information. An SPI service is carried in a DAB (Digital Audio Broadcast) multiplex using the MOT (Multimedia Object Transfer) protocol.

Decoding the radio stream notably allows the vehicle receiver 107 to obtain the address of a resource associated with the station currently listening, for example a URL (Universal Resource Locator) transmitted in an SI object (for Service information in English). In a particular embodiment, the URL is directly included in an adapted field of the SI object, for example in the “link” field defined in the “service provider element” data structure of the SI document as defined in the ETSI standard TS 102 818 V3.3.1.

According to a particular embodiment, the URL is obtained by querying a RadioDNS type service from a service identifier included in the received SI object.

The RadioDNS service is a directory allowing a connected terminal, such as a hybrid radio receiver, to obtain the URL of a Web service associated with a station to access additional online resources. To do this, a service identifier is transmitted in the SI object and transmitted to a RadioDNS server to obtain in return a URL allowing the terminal to access the online resources of a station. Of course, other directory services capable of providing the address of content based on a station identifier can be considered without modifying the invention.

During a step 201, the receiver of the vehicle 107 configures a request from the URL obtained in step 200. The request is for example an http request having as destination the URL obtained in step 200 and enriched by at least one characteristic indication of the geographical location of the receiver, such as a longitude and a latitude or a postal address, a geohash or a geographical area identifier. Geographic location is for example provided by a GNSS (Global Navigation Satellite System) receiver connected to or integrated into the radio receiver. The location indication is for example passed as a parameter of the request or included in a data structure appearing in the body of the request, for example a structure in JSON format (for Javascript Object Notation in English) or XML (for Extensible Markup Language in English).

According to a particular embodiment, the step of configuring the request further comprises the addition, for example in a header or in the body of the request, of a vehicle identifier and/or a vehicle identifier. at least one of the occupants, and/or a destination of the vehicle. For example, the request is personalized by a VIN number (for Vehicle Identification Number in English) of the vehicle, allowing the server receiving the request to further personalize the local content, depending for example on the make or model of the vehicle, habits or preferences of one of the occupants or according to points of interest located on the vehicle's journey to the destination.

The request thus configured is then transmitted to a server whose address appears in the URL during a step 202. The request is transmitted via a network interface of the radio receiver, for example a wireless network interface type Bluetooth, WiFi®, WiMAX®, 2G, 3G, 4G, 5G.

During a step 203, the radio receiver receives a response to the request transmitted in step 202. The response includes at least one address of downloadable content as well as an indication relating to a time at which the content can be returned. For example, the response may contain a JSON or XML data structure in which the URL allowing access to audio content, for example an advertising spot, as well as a date and time at which the content must be returned. The response is particular in that the content designated by the URL included in the response is selected by a server according to the geographical location communicated in the request transmitted in step 202. Thus, the receiver can obtain, for example, a local advertisement and know the date and time it must be returned. Alternatively, the response includes the local content directly, with the broadcast time indicated in a suitable field of the SPI data.

According to a particular embodiment, the data relating to the instant at which the content can be rendered relates to a time reference transmitted in the digital radio stream. In other words, the restitution instant associated with the content and the received multiplex share the same temporal reference.

In step 204, the radio receiver renders the downloaded content at the date and time indicated. To do this, the receiver compares the restitution instant associated with the content with the value of a clock transmitted in the digital radio stream. When the times coincide, the receiver suspends the restitution of the program broadcast by the radio station and begins the reproduction of the local content designated by the URL received in step 204. Note that the restitution of the national program is not suspended in intended to be resumed with a delay corresponding to the duration of the local content. On the contrary, the receiver continues to receive the national program but does not reproduce the content, so that the local content is played in place of the original content.

The local content may have been downloaded and stored in a memory of the receiver before the planned restitution date, but it can also, without modifying the invention, be downloaded and restored simultaneously using a so-called "streaming" technique according to which the content is rendered as it is downloaded to limit the memory needed to store the content.

At the end of the restitution of the local content, the receiver resumes the restitution of the digital radio stream.

According to a particular embodiment, the receiver, during an optional step 305, transmits to a server a message including an indication that the content has been restored. To do this, the message includes at least one content identifier and/or a receiver identifier. In a particular embodiment, when the receiver is integrated into a vehicle, the message may also include an identifier of the vehicle or of at least one occupant of the vehicle and/or a number of occupants. The indication may also include data relating to the restitution conditions, for example a sound volume level.

Thus, the process makes it possible to restore a local advertising spot in place of a national advertising spot, without it being necessary to modify the digital broadcasting infrastructure, and without the risk of disruption of reception in the overlapping areas.

A second embodiment will now be described with reference to the .

There is a flowchart showing the main steps of a local dropout process according to a particular embodiment.

During a first step 300, the digital terrestrial radio receiver (RNT) of the vehicle 107 receives a digital radio stream transmitted by a terrestrial broadcast station 106. The digital radio stream includes for example a multiplex conforming to the DAB standard. The digital radio stream is demultiplexed and decoded by the radio receiver so that the program transmitted by a particular station, such as station 101, can be rendered.

The received multiplex includes a FIS (Filtered Information Service) block. The Filtered News Service is an application used to send messages to certain DAB receivers via the broadcast radio network. It can be used by a radio manufacturer, automobile manufacturer, or third party to selectively distribute information to their customers. An FIS message includes a key allowing a receiver to determine whether it is affected by the message. The FIS thus makes it possible to target certain groups of devices.

FIS messages are integrated into the DAB signal and broadcast cyclically by the broadcaster or network operator in accordance with the ETSI TS.103 689 standard. The receiver implements message security and filtering mechanisms in order, for example, to display messages specific information on a screen of the targeted receiver. When a receiver receives an FIS message, it can decode it using a key provided for this purpose in order to obtain a document in XML format containing various information.

The XML document thus received by the radio receiver of the vehicle 107 includes one or more URLs designating local content, each URL being associated in the XML document with a particular geographical area and an indication relating to the instant at which the content can be rendered. According to a particular embodiment, the instant at which the content can be rendered is relative to a time reference transmitted in the digital radio stream. In other words, the restitution time associated with the content and the multiplex received are based on the same temporal reference.

During a step 301, the receiver of the vehicle 107 configures a request from one of the URLs obtained in step 300, the URL being selected according to the geographical area with which it is associated and the location of the receiver . To do this, the receiver interrogates a geolocation device, for example a GNSS receiver connected to or integrated into the radio receiver, to obtain its location, and compare it with the geographic areas associated with the URLs in the FIS message received in step 300. The selected URL is thus characteristic of the location of the receiver. The vehicle receiver 107 configures the request by providing the selected URL as the destination address. The request is for example an http request.

The request thus configured is then transmitted to a server whose address appears in the URL during a step 302. The request is transmitted via a network interface of the radio receiver, for example a wireless network interface type Bluetooth, WiFi®, WiMAX®, 2G, 3G, 4G, 5G.

During a step 303, the radio receiver obtains, in response to the request transmitted in step 302, local content to be rendered. The content is associated with a particular rendering time indicated in the FIS message received in step 300. Thus, the receiver can download, for example, a local advertisement and know the date and time at which it must be rendered.

In step 304, the radio receiver renders the downloaded content at the indicated date and time. To do this, the receiver compares the restitution instant associated with the content with the value of a clock transmitted in the digital radio stream. When the times coincide, the receiver suspends the restitution of the program broadcast by the radio station and begins the reproduction of the local content designated by the URL received in step 204. The local content may have been downloaded and stored in a memory of the receiver before the planned return date, but it can also, without modifying the invention, be downloaded and returned simultaneously using a so-called “streaming” technique according to which the content is returned as it is downloaded in order to limit the memory required to store the content.

According to a particular embodiment, the receiver transmits to a server a message comprising an indication that the content has been restored during an optional step 305. For this, the message includes at least one identifier of the content and/or an identifier of the radio receiver. According to a particular embodiment, the message may also include an identifier of the vehicle or of at least one occupant of the vehicle and/or a number of occupants. The indication may also include data relating to the restitution conditions, for example a sound volume level.

A third embodiment will now be described with reference to the .

During a step 300, the radio receiver of the vehicle 107 receives and decodes a DAB stream, for example a multiplex comprising programs broadcast by different stations, such as stations 101 to 103 represented on the .

The decoded multiplex includes metadata including schedules and program identifiers as well as an identifier of the station currently being listened to. This metadata is for example transmitted in an SPI data block or an EPG (for Electronic Program Guide in English). The program times include in particular at least one time slot during which the rendering of local content can be scheduled. The time slot corresponds, for example, to a national program of a predefined duration planned to possibly be replaced by a broadcast of local content.

During a step 301, the receiver obtains an address from a content server, for example a URL. The server address may be preconfigured in the radio receiver, included in the received metadata, or obtained from a directory service suitable for returning the address of a particular content server in response to a query including an identifier station, such as a RadioDNS type service.

In step 302, the receiver generates a message intended for the content server whose address it obtained in step 301. The generated message includes in particular a geographical location of the receiver, but can also include other information such as an identifier of the station or program currently being listened to, an identifier of the vehicle, or an identifier of one or more occupants of the vehicle, a schedule and/or a broadcast duration.

During a step 303, the message thus generated is transmitted to the content server via an Internet connection of the radio receiver.

The content server is for example a server of a “Cloud Computing” type network infrastructure.

In response to the message transmitted by the radio receiver, the recipient server selects content according to the indications included in the message, and in particular according to the data relating to the geographical location of the radio receiver included in the message. If necessary, the server can select content according to an identifier of the station or program currently being listened to, a profile associated with one or more occupants of the vehicle in which the radio receiver is integrated, depending on the brand or model of the vehicle, according to a schedule or broadcast duration, or according to any desirable criterion.

The radio receiver receives a response from the server in step 304, the response comprising multimedia content to be rendered on a particular date, for example on a broadcast date transmitted in the request transmitted to the server or on a broadcast date transmitted in multiplex metadata.

When the restitution time coincides with a clock transmitted in the multiplex, the radio receiver restores the content obtained instead of the content of the current station during a step 305.

Finally, when the content has been rendered, the receiver transmits during a step 306 a reading acknowledgment message to the server. The acknowledgment message includes at least one identifier of the content rendered, but may also include an identifier of the vehicle 107 or the radio receiver.

There represents the architecture of a device 400 adapted to implement the local dropout method according to a particular embodiment.

The device 400 includes a storage space 402, for example a MEM memory, a processing unit 401 equipped for example with a PROC processor. The processing unit can be controlled by a program 403, for example a computer program PGR, implementing the local stall method described with reference to the and in particular the steps of receiving a digital radio stream comprising at least one address of a resource associated with a station currently being listened to, of configuring a request from one of the at least one addresses received , the request comprising at least one element characteristic of the location of the receiver, transmission of the configured request to a server, obtaining local content to be rendered from the response to the transmitted request, the content being associated with a particular restitution instant, and restitution of the local content obtained at the restitution instant with which it is associated.

Upon initialization, the instructions of the computer program 403 are for example loaded into a RAM memory (Random Access Memory in English) before being executed by the processor of the processing unit 401. The processor of the unit processing 401 implements the steps of the unhooking process according to the instructions of the computer program 403.

For this, in addition to the memory and the processor, the device 400 includes a tuner 404 adapted to receive a digital radio stream broadcast by a station. The tuner 404 is for example configured to receive a broadcast conforming to the DAB or CDR standard.

The device 400 also includes a demultiplexing module 405. The demultiplexing module is for example implemented by program instructions configured to decode a digital radio stream received by the tuner 404 when they are executed by the processor of the unit processing 401, and in particular to demultiplex the stream and decode the content transmitted by the station currently listening and extract at least one address of a resource made available on a server by the station currently listening.

In a particular embodiment, the program instructions of the module 405 are configured to decode an SPI block transmitted in the digital radio stream and extract one or more resource addresses, for example one or more URLs.

In a particular embodiment, the program instructions of the module 405 are configured to decode a FIS block transmitted in the digital radio stream and extract from it on the one hand one or more resource addresses, for example one or more URLs, and on the other hand share at least one geographical area and at least one broadcast schedule associated with each of said resource addresses.

The device 400 also includes an audio restitution module 406, for example a DAC (Digital Analog Converter) configured to reproduce an audio signal decoded by the module 405 for restitution by an amplification system 407.

The device 400 comprises a configuration module 408 adapted to configure a message from one of the at least one addresses received in the stream decoded by the module 405 so that it includes at least one element characteristic of the location of the receiver.

According to a particular embodiment, the module 408 is implemented by computer program instructions configured to interrogate a GNSS receiver 409 connected to the device 400 in order to obtain a geographical location of the device 400, and to generate a message, for example an http request, having as destination address a URL obtained by the module 405 and including the geographical location provided by the GNSS module 409.

According to a particular embodiment, the module 408 is implemented by computer program instructions configured to interrogate a GNSS receiver 409 connected to the device 400 in order to obtain a geographic location of the device 400, and to obtain, from of the module 405, a plurality of URLs extracted from the radio stream by the module 405, to compare geographical zones associated with the URLs obtained with the location determined by the module 409, to select a URL associated with a geographical zone in which the location of the receiver, and to generate a message, for example an http request, with the destination of the selected URL.

The device 400 also includes a communication module 410, for example a wireless COM network interface of the Bluetooth, WiFi®, WiMAX®, 2G, 3G, 4G or 5G type, configured to allow the device to exchange messages with other devices through a communications network. In particular, the communication module 410 is controlled by program instructions executed by the processing unit 401 and configured to transmit a request configured by the module 408 comprising an element, for example a parameter and/or a URL, which is characteristic of the geographical location of the device 400.

According to a particular embodiment, the module 410 is further configured to allow the reception of a response to such a request, comprising an address of content and at least one schedule for rendering said content, the content being selected by a server according to data characteristic of the location of the device inserted in the request configured by the module 408, and in particular to obtain multimedia content, for example audio and/or video content from the response.

According to a particular embodiment, the module 410 is configured to receive, in response to the request configured by the module 408, multimedia content, for example audio and/or video content.

The module 410 may include instructions for downloading and storing at least part of the local content obtained in response to the request configured by the module 408.

Finally, the device 400 comprises a module 411 for substituting a program broadcast by a station with local content obtained by the communication module 410. The substitution module is configured to compare a restitution schedule associated with the local content obtained with the value of a clock transmitted in the digital radio stream and to control the restitution module 406, when the restitution time associated with the content coincides with the clock transmitted in the radio stream, to suspend the restitution of the audio program broadcast by the station currently being listened to, for example by applying a gain to reduce the volume of the signal, and to instead restore the local content obtained.

According to a particular embodiment, the device is integrated into a digital radio receiver.

According to a particular embodiment, the device is integrated into a digital radio receiver of a road vehicle.

Claims (11)

Local off-hook method in a digital radio receiver, the method comprising the following steps:

• Receiving (200) a digital radio stream comprising at least one resource address associated with a station currently being listened to,
• Configuration (201) of a request from one of at least one addresses received, the request comprising at least one element characteristic of the location of the receiver,
• Transmission (202) of the configured request to a server,
• Obtaining (203) local content to be rendered from the response to the transmitted request, the content being associated with a particular restitution time,
• Restitution (204) of the local content obtained at the restitution instant with which it is associated.

Method according to claim 1 such that it further comprises a step of transmitting to a server a message comprising an indication that the local content has been restored. Method according to any one of the preceding claims in which the configuration step comprises the addition in the request, of a destination address selected from the at least one addresses received and of location data obtained from a geolocation device. Method according to any one of the preceding claims in which the step of obtaining content to be broadcast comprises:

• receiving a response to the transmitted request, the response comprising at least one address of local content selected according to a geolocation of the receiver,
• downloading said content.

Method according to any one of the preceding claims in which the at least one addresses received are each associated with a geographical zone in the digital radio stream, the configuration step comprising the following steps:

• Obtaining receiver location data,
• Selection, among the at least one addresses received, of an address associated with a geographical area corresponding to the location of the receiver, and
• Addition of the selected address to the query.

Method according to any one of the preceding claims in which the at least one resource addresses are each associated in the radio stream with a moment of restitution of the content designated by the corresponding resource. Method according to any one of the preceding claims in which the at least one resource address is received in a data structure conforming to a selective message transmission service. Method according to any one of claims 1 to 6 in which the at least one resource address is received in a block of program information included in the digital radio stream. Local off-hook device in a digital radio receiver comprising a processor (401) and a memory (402) in which program instructions (403) adapted to configure the processor (401) are recorded to implement the following steps:

• Receiving a digital radio stream comprising at least one resource address associated with a station currently being listened to,
• Configuration of a request from one of at least one addresses received, the request comprising at least one element characteristic of the location of the receiver,
• Transmission of the configured request to a server,
• Obtaining local content to be rendered from the response to the transmitted request, the content being associated with a particular restitution time,
• Rendering of local content obtained at the rendering time with which it is associated.

Radio receiver comprising a device according to claim 9. Vehicle comprising a radio receiver according to claim 10.