Devices and processes for optimizing recorded digital content

Abstract

Devices and methods for managing recorded multimedia content. The invention relates to a method and a device for managing recorded multimedia content. The method comprises the following steps: - receiving (E32), from a user terminal (TU1), information (SEG) associated with said content, called segmentation information, allowing the identification of at least one segment of the content (S1, S2) to be deleted from the original content. - generating (E33) a command to restore said content from which the segment has been deleted, called the reduced content (C_DIM). Figure for the abstract: Fig. 4.

Description

Title of the invention: Devices and methods for optimizing recorded digital content. Prior art.

[0001] The invention relates to the general field of electronics. It relates more particularly to the implementation of a service for recording media data content, such as videos, television programs, and / or sound recordings.

[0002] A digital content recorder receives this content in at least one stream transmitted via a communication network, the stream comprising the content and signaling data. It then records them for later availability.

[0003] Two types of recording function are currently known: - The local recording function via personal video recorders (PVRs) located on the end customer's local network. A personal video recorder includes, in particular, a storage space in which the recorded content is stored; - The remote recording function over the network via network-based personal video recorders (nPVRs) located within the operator's network. These recorders, whether shared or not, are connected to streaming receivers via a communication network. The recorder records streams (for example, all streams from all channels from the previous week) either collectively for all users or specifically for each user. At a user's request, the recorder saves the user-selected content from a streaming receiver connected to the recorder, such as a set-top box (STB), in the recorder's memory, associated with a stream receiver identifier and / or a user identifier. This recording can be virtual, as the content is shared transparently by multiple users.Thus, later on, the network recorder can provide the stream receiver with a list of content recorded at the request of that receiver and / or user, also called a "playlist." The user can select content from the playlist and request playback of the selected content by the recorder, which then transmits this selected content to the stream receiver for playback. The user typically pays a fee proportional to the space occupied by the content in their playlist on the recorder's memory.

[0004] The recording command may include an identifier of the communication channel carrying the stream to be recorded, and a recording start time. and an end time for recording or a recording duration. In this case, the user generally takes a safety margin to avoid the risk of program delays, and thus records portions of content that do not interest them: for example, several minutes of previous and / or following content may be recorded unnecessarily.

[0005] Alternatively, the recording command may include an identifier for the content to be recorded and optionally an identifier for the communication channel carrying the stream containing that content, these identifiers being selected from an Electronic Program Guide (EPG). The content (program) identifier may contain the communication channel identifier, in which case the latter information is not required. The Electronic Program Guide contains a list of content sent over one or more given communication channels. This second method reduces recording errors compared to the previous method, for example, recording only part of the content due to an error in entering the time range to be recorded and / or a broadcast or transmission that is out of sync with the broadcast or transmission schedule.This last situation can occur, for example, during a football match broadcast that starts late or goes into extra time. However, this method is not entirely reliable either, and the user may wish to add buffers to protect against the risk of delays. The user potentially saves portions of content that are not of interest to them, including advertisements, parts of the broadcast they do not wish to keep, buffers, etc.

[0006] Thus, users of these systems may record an unwanted part of the program (corresponding to margins or advertisements), thereby leading to an undesired growth of the storage space associated with them, which may result in a limitation on their recording service, in addition to the inconvenience of viewing.

[0007] There is therefore a need for a solution enabling the recording of digital content that corresponds exactly to the user's wishes. Description of the invention

[0008] The invention relates to a method for managing initial content recorded on a digital content recorder, comprising the following steps: - reception, from a user terminal, of information associated with said initial content, called segmentation, allowing the identification of at least one segment to be deleted from said initial content. - generation of a command to restore diminished content, corresponding to the initial content of which said at least one segment has been deleted.

[0009] Correspondingly, the invention also relates to a method of restoring on a user's terminal, reduced content from initial content recorded on a digital content recorder, comprising the following steps: - definition of information associated with said initial content, called segmentation, allowing identification of at least one segment of the initial content to be deleted for said user or said user terminal; - request for restoration of diminished content; - receipt of said diminished content, corresponding to the initial content from which at least one of said segments has been removed.

[0010] "Content" refers to multimedia data, for example, a digital video (film, broadcast, etc.). The original content is that which corresponds to the first recording by a terminal user (for example, a film corresponding to a given channel, with a start time and an end time). A "segment" of the content corresponds to a portion of this content defined by a start time (which may be the beginning of the original content) and an end time (which may be the end of the original content). If the service platform manages several users, the original content may differ for each user: two different users may have defined different start and end times for the same recorded content. Reduced content corresponds to the original content from which the segment or segments to be deleted have been removed.

[0011] The term "content recorder" refers to a set of devices providing a network Personal Video Recorder (nPVR) service. Such a set includes a content recorder, which records content on a network component (for example, a content server) for multiple clients. It also includes a streaming device, responsible for distributing the content to users. Finally, it includes the management components necessary for controlling the recorder and the streamer.

[0012] By "segmentation information" we mean any information that allows a segment of the content to be identified with a start and / or end time.

[0013] Each piece of content is typically sent by the streamer in a data stream comprising that content and signaling data associated with that content, for example, information about the start and / or end time of the content. The data stream, comprising the content and the signaling data, is sent over a communication channel, for example, over a communication network to a user's terminal.

[0014] The proposed technique makes it possible to inform the service platform or recorder that the content is segmented into useful segments, to be retained, and segments to be deleted from the initial recording, so as to obtain reduced content for a user requesting it. It allows the user to receive reduced digital content whose segments correspond exactly to their wishes. Thus, two different users can receive different reduced content, depending on the segmentation they have defined.

[0015] In particular embodiments:

[0016] - The management process includes a step of recording said information Segmentation information is stored in association with the user or their terminal. For example, the user and / or their terminal are known to the service platform by a unique identifier (username, customer account number, nickname, terminal MAC address, IMSI, etc.), and the segmentation information is recorded in relation to this identifier. Advantageously, the content segmentation is recorded so that it can be reused by the system each time the user requests the digital content. In some embodiments, the segmentation information can be recorded on the service platform and / or on the recorder and / or on the client terminal. However, to allow for sharing between multiple user terminals, storing the segmentation information on the service platform is preferable.

[0017] - Said segmentation information is recorded by a service platform The step of generating a request to restore diminished content is followed by a step in which the service platform transmits the segmentation information to the recorder. Advantageously, in this method, the service platform retains control of the recorder and transmits a restoration request that incorporates the segmentation information. In this case, the service platform is aware of the different segmentations requested by the various clients it manages. If a segmentation is associated with content and a user, the platform can transparently generate restoration requests specific to its different clients for their different content. Each retransmitted restoration request includes, in addition to the information from the initial request, user-specific segmentation information.

[0018] - Said segmentation information is recorded by said recorder and the step the generation of a command to restore diminished content is followed by a step of preparing said diminished content for said terminal by said recorder; advantageously according to this method, the recorder is aware of the segmentation associated with the content for the different clients, and performs the segmentation of the content itself before its transmission.

[0019] - Said segmentation information is recorded by said terminal and the step of the generation of a command to restore diminished content is followed by a step of transmission, by said terminal, of said restoration command comprising Segmentation information; advantageously, in this mode, segmentation information is stored on the terminal. Each time the terminal requests the reduced content, it transmits the associated segmentation, for example, in a signal associated with the request. Advantageously, this segmentation can be saved in the user's playlist, which can then be easily modified.

[0020] - Said segmentation information includes information about a point in time beginning of said segment.

[0021] - Said segmentation information includes information about an end time of said segment.

[0022] Advantageously, it is thus possible to define segments to be deleted which are at the beginning of the initial content (by specifying an end time of the segment), or at the end (by specifying a start time of the segment), or between the two (by specifying a start time and an end time).

[0023] The definition of said segmentation information is carried out by the user during a viewing of the initial content; advantageously, the initial content is transmitted once to the user terminal, so that the user can position his segmentation information himself, during a preview of the initial content.

[0024] Correspondingly, the invention relates to a device for managing initial recorded content, a device for restoring diminished content, and a system comprising a device for managing initial recorded content, a device for restoring diminished content and at least one terminal.

[0025] In a particular embodiment, the proposed recording device is a shared recorder such as a digital content distribution network device.

[0026] The invention also relates to a first computer program, this program being capable of being implemented in a computer or a device for managing initial recorded content according to the invention. This program comprises instructions adapted to the implementation of at least certain steps of a method for managing initial recorded content as described above.

[0027] The invention also relates to a second computer program, this program being capable of being implemented in a computer or a device for restoring diminished content according to the invention. This program includes instructions adapted to the implementation of at least certain steps of a method for restoring diminished content, as described above.

[0028] Each of these programs can use any programming language, and be in the form of source code, object code, or intermediate code. source and object code, such as in a partially compiled form, or in any other desirable form.

[0029] The invention also relates to an information medium or a recording medium readable by a computer, and comprising instructions for a computer program as mentioned above.

[0030] The information or recording medium can be any entity or device capable of storing programs. For example, the medium can include a storage means, such as a ROM, for example a CD-ROM or a microelectronic circuit ROM, or a magnetic recording means, for example a hard drive or flash memory. Alternatively, the information or recording medium can be a transmissible medium such as an electrical or optical signal, which can be transmitted via an electrical or optical cable, by radio link, by wireless optical link, or by other means. Alternatively, the information or recording medium can be an integrated circuit in which a program is incorporated, the circuit being adapted to execute or to be used in the execution of a method according to the invention.

[0031] The programs according to the invention can in particular be downloaded onto an Internet-type network. Brief description of the drawings

[0032] Other features and advantages of the present invention will become apparent from the description below, with reference to the accompanying drawings which illustrate an example of an embodiment without being limiting in any way. In the figures:

[0033] [Fig-1] [Fig.1] illustrates an architecture of a communication network in which the proposed processes are implemented according to an embodiment of the invention;

[0034] [Fig.2] [Fig.2] presents a functional architecture of a system comprising proposed devices, according to an embodiment of the invention;

[0035] [Fig.3] [Fig.3] is an organizational chart representing steps in the processes of restoring diminished content and managing recorded content, implemented according to an embodiment;

[0036] [Fig.4] [Fig.4] represents an illustrated example of an initial content;

[0037] [Fig.5] [Fig.5] presents an illustrated example of diminished content. Description of the implementation methods

[0038] Fig. 1 illustrates an architecture of a communication network in which a proposed management method and a proposed restitution method are implemented according to an embodiment of the invention.

[0039] This communication network comprises at least two users USR1 and USR2, each equipped with a user terminal TU1 and TU2 respectively, and connected to the network via Their respective access points PA1 and PA2 (for example, home gateways). Terminals TU1 and TU2 are digital television receivers (STBs) adapted to receive multimedia streams broadcast by a video server STR from a recorder REC on the NET network and to display these streams on a television TV 1 or TV2. This multimedia content includes, for example, videos, television programs, and / or audio tracks. A user terminal can also be, for example, a connected television, a computer, or a smartphone. The network includes a service platform (PFS_TV) that manages the user's TV service and, in particular, manages the interface with the REC recording device. Content request messages pass through the service platform. It notably stores playlist and segmentation information according to an embodiment of the invention, for example, in a database.

[0040] The network includes a REC recording device according to the present invention, capable of providing an nPVR-type service. By way of example, the REC recorder includes a BC digital content database supplied by DIFF television channel broadcasters. For example, the REC recorder stores all recordings from all the channels it receives for a limited period (for example, one week). At the end of this period, it can delete content that has not been recorded by a user. However, it retains content that has been recorded by at least one user. When this user requests the content, for example by selecting it from a playlist, it can deliver it to the user via an STR streaming server capable of serving it.

[0041] Digital content of data C, for example of the video type, is recorded in the content database supplied by one or more broadcasters (DIFF). According to the example shown, the two users USR1 and USR2 have recorded the content C, for example using a program guide (EPG).

[0042] The two users virtually record the content C during a first step, denoted ENR, for example via an EPG, or a command specifying a channel and a time range. The recording corresponds to a C_INIT content. The C_INIT content corresponds to the generic C content, for example a movie, plus possibly a time range preceding and following the C content, as explained in the introduction. The two users may have defined different C_INIT contents (in particular if they have defined different time ranges preceding and following the C content).

[0043] Then the two users each require a first viewing of their C_INIT content.

[0044] User 2, USR2, does not require segmentation according to a method that is the subject of the invention. When user 2 requests, after recording, a visualization User 2 selects content C from their playlist of saved content. Since user 2 did not request content segmentation, a simple request message (R2(C)) is sent to the service platform and then to the recorder, containing an identifier for content C. In return, their terminal T2 receives the initial content C_INIT as recorded for them by the recorder.

[0045] In contrast, during viewing, User 1 defines segmentation data associated with the content. For example, as illustrated in Figures 4 and 5, they define a set of pointers that delimit the start and / or end times of one or more segments to be removed from the content C_INIT. Alternatively, they can designate the segment by any other identifier (for example, the unique identifier of an advertising segment). When the segmentation (SEG) is defined in association with the content C, it is transmitted to the TV platform, according to one embodiment. This step is denoted SEG in the figure. According to one embodiment, the TV platform PFS_TV records the SEG segmentation of the content, in association with User 1 (for example, in relation to their customer account) and / or their terminal TU1.

[0046] When user 1 subsequently requests a viewing of content C, they select it, for example, from their playlist of recorded content. A request message (R1(C)) containing an identifier for content C (which is also that of the initial content C_INIT) is transmitted to the TV platform. The platform detects that this content is associated with segmentation information for user 1 and transmits a request to the recorder to transfer a reduced version of the content (adapted according to the segmentation), specifying the segments to be restored and / or the segments to be deleted.

[0047] In return, the TU1 terminal receives the modified content C_DIM as transmitted by the recorder after it has removed the specified segments. It thus obtains a reduced content that corresponds exactly to its requirements. Furthermore, it thereby reduces the virtual storage space associated with it on the recorder.

[0048] According to another embodiment, not shown, the segmentation is recorded on the terminal, in which case it must transmit it with its request to the service platform. According to another embodiment, not shown, the segmentation is recorded on the recorder, which is then responsible for deleting from the content the segment(s) designated by the segmentation information.

[0049] Figure 2 presents a functional architecture of a system comprising proposed devices, according to a particular embodiment of the invention.

[0050] The system represented comprises a REC recorder, a TU1 user terminal associated with a USR1 user, and a PFS_TV service platform.

[0051] The PFS_TV service platform has the hardware architecture of a computer. It comprises: - a COM2 communications module configured to communicate with and in particular receive requests from user terminals and a COM2' communications module to communicate with and in particular transmit requests to the REC recorder; - a storage space, for example a database, denoted BSG (Segmentation Database), to store SEG segmentation data in relation to content and a user (or their terminal);

[0052] - a processor (computing unit) UC2;

[0053] - MEM2 memories comprising random access memory and read-only memory. Such means are known per se and are not described in further detail here. The device's read-only memory constitutes a recording medium according to the invention, readable by the processor, and on which a computer program P2 according to the invention is recorded. The device's random access memory allows, in particular, the recording of variables used for executing the steps of the content management process, such as storing information on the SEG segmentation (the pointers, or start and end times, allowing the definition of the segments to be deleted from the C_INIT content), the association of this segmentation with a user or their terminal, the identifiers allowing access to the C / C_INIT content in the recorder (channel identifier, time slot, etc.), the PG programming guide, the playlists of the different users, etc.

[0054] The REC digital content recording device C has the hardware architecture of a computer. It comprises: - a C0M1 communications module configured in particular to obtain information on the C / C_INIT content and optionally the associated SEG segmentation; - an ENR recording module with at least one C / C_INIT content; - an STR streaming module capable of transmitting (broadcasting) digital content to user terminals;

[0055] - a processor (computing unit) UC1;

[0056] - MEM1 memories comprising random access memory and read-only memory. Such means are known per se and are not described in further detail here. The device's read-only memory constitutes a recording medium according to the invention, readable by the processor, on which a computer program PI according to the invention is recorded. The device's random access memory allows the recording of variables used for executing the search and retrieval steps for content, such as identifiers (channel ID, time slot, etc.) enabling access to the C / C_INIT content in the content database denoted BC. According to one embodiment, the REC recorder is also capable of receiving and / or recording the SEG segmentation information associated with digital content and to process it to segment the content before its transmission (distribution) to a user;

[0057] - a BC multimedia content base in which is recorded, among other things, the C / C_INIT content.

[0058] In the embodiments described here, the user terminal TU1 has the hardware architecture of a computer, for example of type STB (Set Top Box).

[0059] The architecture of the TU1 terminal includes in particular a computing unit UC3, a memory MEM3, a digital content decoder DCD, a PLY player, means GC for generating a command capable of obtaining, from a user interface IH, the segmentation data defined for example by the user USR1 when viewing the content C_INIT (for example, using the remote control of his decoder, or a mouse and keyboard of a PC, etc., depending on the nature of his terminal), as well as communication means COM3 which allow him in particular to communicate with the service platform and to receive content from the recorder.

[0060] The read-only memory (ROM) of the TU1 terminal according to the invention constitutes a storage medium, readable by the UC3 processor, on which a computer program P3 conforming to the invention is stored. The ROM allows for the storage of variables used for the execution of a program for rendering diminished content (reception, decoding, etc.). The computer program P3 defines, in particular, functional and software modules, configured here to define a segmentation associated with content and means for storing and / or transmitting the segmentation, according to embodiments of the invention. These functional modules rely on and / or control the hardware components of the device.

[0061] Fig. 3 is a flowchart representing steps of a diminished content restitution process, implemented on a user terminal according to an embodiment of the invention, and of a corresponding process of managing initial content recorded on a recorder, for making diminished content available by a service platform.

[0062] During step E20, the terminal receives the electronic program guide (EPG). The user consults it and generates a content recording request C, denoted ENR (C_INIT). This request may specify a program identifier C, the channel to be recorded, a start time (T1), an end time (T2), or a duration (D). During step E30, the TV service platform PFS_TV receives the recording command from the user's terminal TU1, USR1, and transmits it to the recorder. Similarly, the ENR' (C_INIT) request includes, for example, a program identifier C, a channel identifier C1, and a start time (T2). The recorder specifies a start time and an end time, and / or a recording duration. The corresponding stream is designated C_INIT. The request is received by the recorder during step E40. It should be noted that the user's recording can be virtual, meaning that the content C is physically recorded on the recorder, but the content C_INIT is recorded "virtually" by a user who defines its limits (for example, the content C plus the margins).

[0063] During step E21, the user consults their content playlist and selects the content C to view. Terminal T1 sends a request to the service platform to retrieve the content C, denoted RO(C_INIT). During step E31, the service platform receives the retrieval command and transmits a corresponding request RO'(C_INIT) to the recorder, which receives it during step E41.

[0064] The recorder transmits (streams, or broadcasts) the C_INIT content (the C content as defined by the user during their recording command) to the terminal during a step E42. During a step E22, the terminal receives the content as it was recorded, decodes it and makes it available to the user.

[0065] During step E23, the user defines a segmentation EEG (Elementary Segmentation Group) for the content being viewed. For example, they define a set of pointers defining the start and end times of segments to be extracted from the content. They can use a keyboard, mouse, remote control, audio device, etc., for this purpose. At the end of this step, when all the segments have been defined, the segmentation EEG is transmitted from the terminal to the service platform, in association with the content C, in a request denoted R1(C). It may include the terminal and / or user identifier.

[0066] According to the embodiment shown, the SEG segmentation is received and recorded by the service platform in association with the content C and the terminal and / or user identifier during a step E32. According to another embodiment, not shown, the segmentation is transmitted to the recorder, which stores it in association with the content C and the terminal and / or user identifier. According to yet another embodiment, not shown, the segmentation is stored on the terminal TU1 and transmitted to the service platform (and optionally to the recorder), which uses it to construct the appropriate request for the recorder.

[0067] During step E24, the user sends a request for content C to the service platform, denoted R1(C), via their terminal. The service platform receives this content retrieval request during step E33, retrieves the SEG segmentation associated with content C from memory, and constructs a request for the recorder, denoted R1'(C_DIM). This step may be preceded by a test for The request verifies that the content requested by the user is associated with a segmentation. This R1'(C_DIM) request includes the identification of the content C (and therefore C_INIT) and the segments related to the segmentation. The content C thus defined is denoted C_DIM (diminished content). If the service platform has not registered the segmentation, or if no segmentation is associated with the content for this user, it simply forwards the diminished content retrieval command to the registrant, without the segmentation.

[0068] The recorder receives this request during a step E43, prepares the diminished content, and transmits it to the terminal during a step E44. If the request is not associated with a segmentation, and such a segmentation is recorded by the recorder, it likewise prepares the diminished content before transmitting it.

[0069] During an E25 step, the terminal receives the diminished content, decodes it and makes it available to the user who can, for example, display it on his TV1 television.

[0070] Figure 4 represents an illustrated example of initial digital content.

[0071] The initial content C_INIT corresponds, for example, to a channel CH1, or to a C program of channel CH1, and is defined by the user by a start time TA and an end time TB, when requesting its initial recording of the content. Its initial duration is D_INIT (= TB-TA). When viewing the recorded content, the user defines, according to this example, two segments to be excluded from the content C_INIT: - a segment SI defined by its start time T1 and its end time T2; - a segment S2 defined by its start time T3 and its end time which corresponds to the end time TB of recording.

[0072] Thus the SEG segmentation can be defined by the set of three time pointers T1, T2 and T3 (the instant TB being defined by default as the end of the content).

[0073] Naturally, many variations are possible, including cases in which the user: - defines not the segments to be deleted, but the segments to be kept; - defines a start segment to be deleted, solely by the data of the end pointer of the segment (the start being by default the TA time of the start of the content); - defines durations, not end times; - defines segments to be added to the content; for example, it realizes during visualization that it is missing the end of the program, and defines an end time later than TB; - etc.

[0074] [Fig.5] presents an illustrated example of reduced digital content according to the segmentation defined beforehand by the user in accordance with [Fig.4].

[0075] The reduced content corresponds to the C_INIT content from which the segments defined by the user's SEG segmentation have been removed, according to the example the SI and segments S2. The reduced content has a duration D_DIM which corresponds to the initial duration D_INIT from which are subtracted the durations of segments S1 and S2.

Claims

Demands

1. Method for managing initial content (C_INIT) recorded on a digital content recorder (REC), comprising the following steps: - receiving (E32), from a user terminal (TU1), information (SEG) associated with said initial content, called segmentation information, allowing identification of at least one segment (SI, S2) to be deleted from said initial content; - generating (E33) a command to restore diminished content (C_DIM), corresponding to the initial content from which said at least one segment has been deleted.

2. Management method according to claim 1, comprising a recording step (E32) of said segmentation information in association with said user or said user terminal.

3. Management method according to claim 2, characterized in that: - said segmentation information is recorded by a service platform (PFS); - the step of generating a command to restore diminished content is followed by a step of transmission (E33), by said service platform, of said segmentation information to said recorder.

4. Management method according to claim 2, characterized in that: - said segmentation information is recorded by said recorder (REC); - the step of generating a command to restore diminished content is followed by a step of preparing said diminished content (C_DIM) for said terminal by said recorder.

5. Management method according to claim 2, characterized in that: - said segmentation information is recorded by said terminal (TU2); - the step of generating a command to restore diminished content is followed by a step of transmitting, by said terminal, said restoration command including the segmentation information.

6. Method for restoring, on a user's terminal (TU1) (USR1), diminished content (C_DIM) from initial content (C_INIT) recorded on a digital content recorder, comprising the following steps: - definition (E23) of information (SEG) associated with said initial content, called segmentation, allowing to identify at least one segment of the initial content to be deleted for said user or said user terminal; - request (E24) for restitution of a diminished content; - reception (E25) of said diminished content, corresponding to the initial content (C_INIT) of which said at least one segment has been deleted (C_DIM).

7. Method according to the preceding claim, wherein the definition (E23) of said segmentation information (SEG) is performed by the user during a viewing of the initial content (C_INIT).

8. A method according to any one of the preceding claims, wherein said segmentation information (SEG) includes information about a start time of said segment (TA, T1, T3).

9. A method according to any one of the preceding claims, wherein said segmentation information (SEG) includes information about an end time of said segment (T2, TB).

10. A service platform for managing initial content (C_INIT) recorded on a digital content recorder (DCR), the platform being configured to implement the following steps: - receiving, from a user terminal (TU1), information (SEG) associated with said initial content, known as segmentation information, allowing the identification of at least one segment (SI, S2) to be deleted from said initial content; - generating a command to restore diminished content (C_DIM), corresponding to the initial content from which said at least one segment has been deleted.

11. User terminal (TU1) to restore diminished content (C_DIM) from initial content (C_INIT) recorded on a digital content recorder, configured to implement the following steps: - definition of information (SEG) associated with said initial content, called segmentation, allowing at least one segment of the initial content to be deleted for said user or said user terminal;

12.

13.

14. - request for restoration of diminished content; - reception of said diminished content, corresponding to the initial content (C_INIT) from which said at least one segment has been deleted (C_DIM). System comprising a digital content recorder (REC), a service platform (PFS) according to claim 10, and at least one user terminal (TU1) according to claim 11. Computer program comprising instructions for executing the steps of the management process according to any one of claims 1 to 5 when said program is executed by a computer. Computer program comprising instructions for carrying out the steps of the restitution process according to any one of claims 6 to 9 when said program is executed by a computer.

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