US20050071871A1 - Content guide information processing apparatus, content guide information processing method and computer program thereof - Google Patents

Content guide information processing apparatus, content guide information processing method and computer program thereof Download PDF

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Publication number
US20050071871A1
US20050071871A1 US10/914,745 US91474504A US2005071871A1 US 20050071871 A1 US20050071871 A1 US 20050071871A1 US 91474504 A US91474504 A US 91474504A US 2005071871 A1 US2005071871 A1 US 2005071871A1
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Prior art keywords
content
guide information
program
information processing
content guide
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US10/914,745
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English (en)
Inventor
Keiji Yuzawa
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Sony Corp
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Sony Corp
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Assigned to SONY CORPORATION reassignment SONY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YUZAWA, KEIJI
Publication of US20050071871A1 publication Critical patent/US20050071871A1/en
Priority to US12/217,025 priority Critical patent/US8438599B2/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26291—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for providing content or additional data updates, e.g. updating software modules, stored at the client
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42661—Internal components of the client ; Characteristics thereof for reading from or writing on a magnetic storage medium, e.g. hard disk drive
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
    • H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334—Recording operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor

Definitions

  • the present invention relates to a content guide information processing apparatus, content guide information processing method and computer program for processing content guide information for guiding content viewing.
  • the invention relates to a content guide information processing apparatus, content guide information processing method and computer program for processing guide information relating to playing/viewing of content which has been stored once.
  • the invention relates to a content guide information processing apparatus, content guide information processing method and computer program for processing guide information relating to the playing/viewing of content retrieved through various modalities, such as television broadcasts and a computer network and, in particular, to a content guide information processing apparatus, content guide information processing method and computer program for clearly providing users with content guide information in formats compliant with different modalities.
  • Broadcasting plays significantly greater roles in today's information based society.
  • television broadcasting directly provides audio and video information to audiences and has great influence in society.
  • Broadcasting technologies include a wide variety of technologies, such as signal processing, signal communication and audio/video information processing.
  • Various modalities are available for providing users with program content, including broadcasting by radio waves, such as terrestrial waves and satellite waves, cable television and network programs to be provided through computer communication.
  • broadcasting content distributed from broadcasting stations is viewed by huge numbers of people.
  • broadcasting content can be viewed by recording received content on a viewer side once, and then playing the content at any preferred time.
  • HDD hard disk drive
  • PCs personal computers
  • television program recording/viewing functions and, television receivers (set-top boxes) each containing an HDD and so on have also been available.
  • An HDD is an apparatus in which recorded data is randomly accessible. Therefore, in playing recorded content, recorded programs do not have to be simply sequentially played from the beginning as with a conventional videotape. The playing of a preferred program (or a specific scene or specific corner in a program) can be started directly.
  • EPG Electrical Program Guide
  • a program guide for selecting a broadcast television program over image signals is transmitted to a display apparatus, and the receiving display apparatus displays the program guide.
  • the EPG is obtained in parallel with the process of recording a broadcast program, and a user can obtain a certain viewing support effect from the EPG to be provided when the user plays and views the recorded program.
  • an EPG system may be of a Vertical Blanking Interval (VBI) system (as disclosed in JP-T-6-504165 or U.S. Pat. No. 5,353,121) or of a digital satellite type to be used in a Digital Satellite System (DSS, which is a trademark of Hughes Communication, as disclosed in JP-A-8-111823).
  • VBI Vertical Blanking Interval
  • DSS Digital Satellite System
  • VBI data of an EPG is transmitted so that the position of the EPG does not affect the horizontal scanning lines of the original image.
  • a receiver thereof can create display data of the EPG from the VBI data and display the display data on a monitor.
  • EPG data and original image data are digitized, packetized and transmitted.
  • a receiver thereof stores the EPG data in a memory, creates corresponding display data and displays the display data on a monitor.
  • an EPG in a format compliant with each provider is often provided in moving image content, that is, a “network program” to be provided from a predetermined moving image distribution service site over the Broadband Internet.
  • the EPG data is stored in a memory, and corresponding display data is created.
  • the display data can be displayed on a Web browser, for example.
  • a user can select a program that the user desires to view with reference to an electronic program guide or a program list in another form displayed on a monitor.
  • program information that is, guide information relating to the playing/viewing of content
  • program information must be provided on a monitor through separate user interfaces. Therefore, users cannot view different program information at-a-glance and it is hard for users to understand.
  • the program in order to view a desired program in either terrestrial broadcasting or satellite broadcasting, the program is searched in an EPG of a VBI system and is checked to see whether the program is provided in terrestrial broadcasting.
  • the desired program is not on the list of the EPG, the program is searched in an EPG for satellite broadcasting in the same manner. In this case, it is a complicated procedure to view a predetermined program fast and securely.
  • an EPG is originally a description of guide information relating to program content on air but is not independent guide information for content (self-recorded content) stored in a user's recorder, such as an HDD recorder.
  • the present invention provides a sophisticated content guide information processing apparatus, contents guide information processing method and computer program, which allow preferable processing on guide information relating to the playing/viewing which has been stored.
  • the invention also provides a sophisticated content guide information processing apparatus, content guide information processing method and computer program, which allow processing of guide information relating to the playing/viewing of content retrieved through various modalities such as television broadcasting and computer networks.
  • the invention further provides a content guide information processing apparatus, content guide information processing method and computer program, which can achieve high operability in playing content by providing users with an easy-to-see guide of integrated content information in different forms that are compliant with the respective modalities through an at-a-glance unified user interface.
  • a content guide information processing apparatus for guiding content viewing, wherein the apparatus includes a content receiver for receiving content through different modalities; a memory for storing received content; a content player for playing receiver or stored content; a content guide information management section for managing content guide information having integration of content received through different modalities to be supplied; and a supply section for supplying content guide information.
  • the content receiver may receive program contents through television broadcasting or a distribution service over a network.
  • the content guide information management section may manage a unified program list as content guide information.
  • the content receiver may retrieve program metadata in response to receiving of television broadcasting or receive a program list periodically or in predetermined timing from a service site distributing moving image programs.
  • the content guide information management section may additionally register content information with the contents guide information when the content is stored in the memory.
  • the content guide information management section may additionally register or modify and register a detail of a program list with the content guide information when the program list is received periodically or in a predetermined timing from a service site distributing moving image programs.
  • a unified program list is created in which program content provided by different modalities, such as a broadcasting program and a network program, are comprehensively handled.
  • program content provided by different modalities, such as a broadcasting program and a network program, are comprehensively handled.
  • content can be viewed at glance irrespective of modalities, and a user does not have to know which modality is adopted for retrieving each content.
  • a user interface screen provided to and manipulated by a user is created based on an at-a-glance unified program list and is displayed on the screen of a monitor.
  • a program selected by a user to play is a self-recorded program
  • a corresponding program is read from a local storage device, such as a HDD, and the content is played.
  • a selected program is a network program
  • a corresponding program is preferably played in a streaming form over the Internet.
  • the memory may encode received content as required and store the encoded contents.
  • the contents guide information may also be described in a structured description language.
  • a program executable by an information processing system such as content guide information processing apparatus or a computer for managing contents guide information guiding content viewing, the program causing the system or apparatus to receive content through different modalities; store received content; play received or stored content; manage content guide information having integration of content received through different modalities to be supplied; and supply content guide information.
  • the receiving step of content retrieves program metadata in response to receiving television broadcasting or receives a program list periodically or in predetermined timing from a service site distributing moving image programs.
  • the content guide information managing additionally registers content information with the content guide information when the content is stored or registers or modifies and registers a detail of a program list with the content guide information when the program list is received periodically or in predetermined timing from a service site distributing moving image programs.
  • the program according to an aspect of the invention may be a computer program stored in computer-readable form so as to perform, on a computer system, predetermined processing.
  • a computer program according to the invention may be installed in a computer that functions as a content information processing apparatus so that the same advantages can be obtained as those of a content guide information processing apparatus according to the invention.
  • FIG. 1 is a diagram schematically showing a sample construction of a content guide information processing apparatus according to an embodiment of the invention
  • FIG. 2 is a diagram showing the construction of a blank unified program list
  • FIG. 3 is a diagram showing a unified program list including additionally registered metadata of a self-recorded program
  • FIG. 4 is a diagram showing a unified program list including additionally registered metadata of a self-recorded program
  • FIG. 5 is a diagram showing an example of a network program list, which has been retrieved over a network
  • FIG. 6 is a diagram showing a result of synthesis of the unified program list shown in FIG. 4 and network program data extracted from metadata of the network program shown in FIG. 5 ;
  • FIG. 7 is a diagram showing a sample screen of a unified program list.
  • FIG. 8 is a diagram showing a sample construction of an operating panel of a remote control for a terminal 10 .
  • the invention relates to a content guide information processing apparatus for providing users with at-a-glance unified content guide information relating to content to be provided in formats compliant with different modalities through a unified user interface.
  • FIG. 1 schematically shows an example of a content guide information processing apparatus according to an embodiment of the invention.
  • the content guide information processing apparatus is implemented as a customer premises terminal 10 , including a television broadcasting receiving function, a moving image program distribution service receiving function over the broadband Internet, and a recording/playing function for recording and playing moving image programs retrieved through various modalities.
  • the customer premises terminal 10 includes a tuner 11 , an encoder section 12 , a hard disk drive (HDD) 13 , a communication control section 14 , a play control section 15 , a decoder section 16 , a television monitor 17 , an input apparatus 18 and a guide information creating section 19 .
  • a tuner 11 an encoder section 12 , a hard disk drive (HDD) 13 , a communication control section 14 , a play control section 15 , a decoder section 16 , a television monitor 17 , an input apparatus 18 and a guide information creating section 19 .
  • HDMI hard disk drive
  • the customer premises terminal 10 starts an operation, such as receiving television broadcasting, receiving moving image program distribution service over the Internet, recording received broadcasting/moving image content, and playing recorded content, in response to user input or manipulation (which may include a remote control operation) through the input apparatus 18 .
  • the customer premises terminal 10 may also perform operations relating to playing recorded content such as fast-forwarding, rewinding and pausing and/or an operation such as deleting recorded content.
  • Broadcast waves received by an antenna are supplied to the tuner 11 .
  • the broadcast waves may be any one of terrestrial waves, satellite waves, digital broadcasting and/or analog broadcasting.
  • the tuner 11 tunes broadcast waves at a predetermined channel, that is, it can select a station in accordance with instructions from a user through the input apparatus 18 .
  • the communication control section 14 accesses a predetermined service site over the broadband Internet and downloads desired moving image program content (such as a network program).
  • the program when a program that a user selects to view is a network program, the program may be stored in the HDD 13 once and may be played.
  • a network program can be downloaded from a predetermined service site 20 as required, a corresponding program in a streaming form over a network can be played.
  • the customer premises terminal 10 includes the HDD 13 as a memory apparatus for recording/playing content to be provided by broadcast waves or over a network (or via other modalities).
  • the HDD 13 is preferably a magnetically-written storage apparatus.
  • a magnetically-written storage apparatus Generally, several magnetic recording media are accommodated in a drive unit and are rotated by a spindle motor at high speed.
  • the media is coated with a nickel- or phosphorus-plated magnetic substance.
  • magnetization corresponding to data is imparted to the media.
  • the data is written or read onto/from the media.
  • the principle of the present invention is not limited to an HDD, and the HDD may be replaced by other media which can record/play content.
  • broadcast content received by the tuner 11 is encoded according to Moving Picture Experts Group (MPEG), for example, by the encoder section 12 and is stored on the HDD 13 .
  • MPEG Moving Picture Experts Group
  • encoded content is received and is stored in the HDD 13 as is.
  • Encoded moving image program content is also distributed from the service site 20 and is stored in the HDD 13 as is.
  • the service site 20 includes a memory 21 and a transmission control section 22 .
  • the memory 21 stores pay or free moving image program content (e.g., a network program).
  • the transmission control section 22 controls operations for distributing moving image program content over a broadband network. While only one service site 20 is shown for simplicity in the drawings, any number of service sites may be established over the Internet.
  • the play control section 15 reads and controls the playing of desired content from stored content on the HDD 13 .
  • the decoder section 16 decodes recorded encoded content.
  • the television monitor 17 then outputs and displays decoded audio signals and video signals, respectively.
  • the guide information creating section 19 unifies different kinds of guide information relating to content to be provided in forms compliant with different modalities, creates a list of the at-a-glance content guide information through a unified user interface and displays the list on the television monitor 17 .
  • a user can instruct the play control section 15 to play a program on a unified guide information screen having an integration of program information for self-recorded programs, which are recorded broadcasting content, and network programs downloaded from the service site 20 (which will be described later).
  • a user does not have to know whether a program to be played is a self-recorded program or a network program.
  • content guide information is created by following the steps of:
  • a unified program list having an integration of program content to be provided through different modalities, such as broadcasting programs and network programs, is created and is recorded in the HDD 13 or in another storage apparatus.
  • program metadata which is retrieved in recording a self-recorded program, is additionally registered with the unified program list.
  • a network program list is periodically retrieved from the service site 20 and is modified and recorded in the unified program list.
  • a user interface screen for display to and manipulation by a user is created based on an at-a-glance unified program list and is displayed on the screen of a monitor.
  • a program selected to be played by a user is a self-recorded program
  • the corresponding program is read from the HDD 13 and the content is played. If a selected program is a network program, the corresponding program is played in a streaming form over the Internet.
  • the terminal 10 prepares a unified program list in the HDD 13 during, for example, a production process.
  • the unified program list is initially blank (without programs) during the production process (i.e., at the initial state).
  • the unified program list can be in the form of, for example, XML (that is, extended Markup Language) or other structured description language.
  • FIG. 2 shows an example of a blank unified program list.
  • Program content such as a television broadcast program or a network program, is additionally registered with a field separated by a tag name, such as “localcontentlist” (which will be described later).
  • a user can instruct the terminal 10 to select a desired channel or record a program through the input apparatus 18 .
  • a program received at that time is recorded (that is, it is self-recorded) onto the HDD 13 .
  • program metadata retrieved during a recording operation is additionally registered with a unified program list.
  • the metadata of the program is written in a tag field under a tag name, such as “content”.
  • the “content” field contains a “type” field, a “title” field and a “honpen” field.
  • the “type” field indicates an attribute of a recorded program.
  • the “title” field indicates a program name or identification information of a program.
  • the “honpen” field indicates a place where content is stored. In the example shown in FIG.
  • a “content” field is additionally registered including: “self-recorded program” as “type”; “21:00, March 10, CH-4” (recorded date and time and channel name) as “title”; and “c: ⁇ content ⁇ l1.mpg” (directory on a local disk and file name) as “honpen” (storage place).
  • a “content” field is additionally registered including: “self-recorded program” as “type”; “18:00, March 12, CH-8” (recorded date and time and channel name) as “title”; and “c: ⁇ content ⁇ l2.mpg” (directory on the local disk and file name) as “honpen” (storage place).
  • the terminal 10 upon powering on, automatically accesses a predetermined service site over a network and retrieves a network program list. For example, an HTTP request is given to a URL on the network program list to extract data required for a unified program list from a program list returned as an HTTP response and to additionally register the data with the unified program list.
  • a predetermined service site For example, an HTTP request is given to a URL on the network program list to extract data required for a unified program list from a program list returned as an HTTP response and to additionally register the data with the unified program list.
  • a network program list can be in the form of XML (extended markup Language), for example, or another structured description language.
  • FIG. 5 shows an example construction of a network program list to be retrieved over a network.
  • the network program list includes a URL (HTTP://streaming.sony.co.jp/contentlist) indicating a place of program content or an access method to program content.
  • a field separated by a tag name such as “netcontentlist”
  • the “update” field indicates an update date of a network program.
  • the “content” field describes details of the content.
  • Each of the fields separated by “content” tags includes a list of information on Network program content.
  • a “title” field and a “honpen” field are included in each “content” field.
  • the “title” field indicates a name of the network program or identification information of the network program.
  • the “honpen” field indicates a storage location of the content. Unlike with a self-recorded program, the location in a network space or an access method (URL) is described in a “honpen” field.
  • the “netcontentlist” field includes information on two network programs as “content” fields.
  • One of the “content” fields includes the network program name “Hana's Cocoon Life” as the “title” and the location or access method of “HTTP://streaming.sony.co.jp/content/n1.mpg” as the “honpen”.
  • the other “content” field includes the network program name “Ballacan's Cocoon Life” as the “title” and the location or access method of “HTTP://streaming.sony.co.jp/content/n2.mpg” as the “honpen”.
  • a current or later network program list may be retrieved periodically or in accordance with predetermined times.
  • a corresponding detail of the unified program list is modified and registered in accordance with the update.
  • FIG. 6 is a diagram showing a result of the synthesis of the unified program list shown in FIG. 4 and network program data extracted from metadata of the Network program shown in FIG. 5 .
  • data of a network program is written in a tag field under the tag name, “content”.
  • the “content” field contains a “type” field, a “title” field and a “honpen” field (as described above).
  • the “type” field indicates an attribute of the recorded program.
  • the “title” field indicates the program name or identification information of the program.
  • the “honpen” field indicates a location where the content is stored.
  • “content” fields are additionally registered for two network programs retrieved from network program metadata as shown in FIG. 5 .
  • One of the “content” fields includes: “NETWORK PROGRAM” as the “type”; the network program name “Hana's Cocoon Life” as the “title”; and the location or access method of “HTTP://streaming.sony.co.jp/content/n1.mpg” as the “honpen”.
  • the other added “content” field includes: “NETWORK PROGRAM” as the “type”, the network program name “Ballacan's Cocoon Life” as the “title” and the location or access method of “HTTP://streaming.sony.co.jp/content/n2.mpg” as the “honpen”.
  • a program list is displayed on a screen based on the unified program list in response to the pressing of a program list button on a remote control (see FIG. 8 ) for the terminal 10 , for example.
  • All content is comprehensively and uniformly handled and can be viewed at glance on the user interface program list irrespective of the modality, such as a television broadcasting or a network program. Thus, the user does not need to know the modality or storage location of the displayed content.
  • FIG. 7 shows a sample screen of a unified program list.
  • program types and program names of content which can be played on the terminal 10 , are displayed in a list form.
  • a user can play a program by manipulating a cursor button on a remote control, for example, by placing a cursor over a specific program and pressing a “CONFIRM” button.
  • Programs may be displayed in order of registration with (description in) the unified program list shown in FIG. 6 or may be rearranged in order of viewing support information or other information or programs.
  • a program selected to be played by a user is a self-recorded program
  • the corresponding program is read from the HDD 13 , and the content is played.
  • the corresponding program is played by streaming over the Internet.
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