JP2005260541A - Device and method for displaying video - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide measures against unavoidable viewing interruption because of the problem peculiar to a portable terminal, such as sudden power interruption and the disconnection of radio waves, when viewing video by the portable terminal. <P>SOLUTION: A video display device comprises an interruption detection means 308 for estimating interruption in a video program received by radio communication; an interruption information processing means 307 for recording interruption information for restarting the video program in an interruption information storage means 309, when the interruption of the video program is estimated; and a restart request signal transmission means 313 for transmitting a restart request signal for requesting the restart of the video program by using the interruption information, thus enabling a viewer to be free from troublesome labor of the cueing of an interrupted scene when viewing again and charging/authentication work, even if viewing is suddenly interrupted during the viewing of distribution type content, and performing free monitor switching without the labor of the cueing of the interrupted scene and charging/authentication work. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a video display device capable of viewing a video program received by wireless communication in a video display device or the like that does not have an area for storing a video program.

  In recent years, mobile information terminals such as mobile phones have become more sophisticated, and the need for video viewing such as terrestrial broadcasting and VOD (video on demand) programs has also increased. However, when viewing a video on a mobile terminal, it was necessary to take measures against being forced to interrupt the viewing because of problems unique to the mobile terminal such as a sudden power interruption or radio wave interruption.

  Conventionally, as a recovery means in the case of a temporary interruption, there is a portable viewing terminal device that transmits a recording command to a peripheral device stationary at home when moving to a place where radio waves do not reach (see Patent Document 1). .

In addition to video, there is TCP (Transmission Control Protocol), which is a protocol that controls data transmission over the Internet, as a means for recovering temporary interruption (see Non-Patent Document 1).
Japanese Unexamined Patent Publication No. 2003-110955 (Section 7, FIG. 3) IETF RFC793

  However, the former method is not suitable for VOD programs that do not necessarily require recording. In addition, there is a problem that it is not possible to cope with interruption and resumption of viewing of VODs for which recording is not permitted. In addition, if you suddenly move to a place where radio waves are difficult to enter, the timing for transmitting the recording command may be delayed, and you may miss the part you want to see, or the radio wave condition may be bad and the recording command may not be transmitted.

  The latter method has a problem that it can cope with a short time radio wave interruption but cannot cope with a power interruption or a viewing interruption due to a user operation.

  In light of these problems, the present invention recovers when viewing is interrupted, such as sudden power interruption, radio wave interruption, incoming call, stop instruction by the user, etc. during VOD viewing by the video display device. This solves the problem that viewing cannot be resumed from an interrupted scene.

  Further, it solves the problem that video viewing cannot be suspended temporarily and viewing cannot be continued from the interrupted scene on another video display device.

  In order to solve these problems, the present invention provides an interruption detection means for estimating interruption of a video program received by wireless communication, and for restarting the video program when the interruption of the video program is estimated. The video display device includes: interruption information processing means for recording interruption information in interruption information storage means; and transmission means for transmitting a resumption request signal for requesting resumption of the video program using the interruption information.

According to the present invention, even if a sudden viewing interruption occurs during the viewing of distribution-type content, the viewer is freed from the troublesome heads of interruption scenes during re-viewing and the trouble of accounting / authentication work. In addition, it is possible to perform free monitor switching without taking the beginning of an interruption scene and the trouble of accounting / authentication work.

  According to a first aspect of the present invention, there is provided interruption detecting means for estimating interruption of a video program received by wireless communication, and interruption information for resuming the video program when interruption of the video program is estimated. A video display device comprising: an interruption information processing unit that records information in an information storage unit; and a transmission unit that transmits a resumption request signal that requests resumption of the video program using the interruption information. Sometimes, it has the effect of allowing viewing to be resumed and the video display device to be easily changed without taking the beginning of an interrupted scene and the trouble of accounting / authentication work.

  According to a second aspect of the present invention, there is provided the video display device according to claim 1, wherein the interruption detecting means estimates interruption of the video program at a predetermined time interval. Thus, it is possible to easily resume viewing even when the viewing is interrupted unexpectedly.

  The third invention of the present invention further includes user operation input means for inputting a user stop operation, and the interruption detection means estimates interruption of the video program using the user operation input. The video display device of the present invention has the effect of allowing viewing to be easily resumed even when viewing is interrupted by a user operation.

  According to a fourth aspect of the present invention, in the video display device according to any one of claims 1 to 3, the restart request signal is a signal further including information of a video display device that outputs a video program to be restarted. The resumption of viewing can be resumed according to the characteristics of the video display device such as resolution, number of colors, physical position, and position on the Internet.

  5. The video display according to claim 1, wherein the interrupt information includes at least one of content information of the video program, user information, terminal information, and viewing time until the video program is interrupted. The apparatus has an effect of enabling viewing resumption easily without taking time for content selection, scene cueing, and accounting / authentication work when viewing is suspended or resumed.

  According to a sixth aspect of the present invention, the content information includes information on a distribution server that distributes a video program, a content ID of the video program, a video program name, a resolution, a connection ID to the distribution server, a password to the distribution server, 6. The video display device according to claim 5, wherein the video display device includes at least one encryption key used for descrambling, and has the effects of specifying contents to be viewed and resumed and saving labor for charging / authentication.

  According to a seventh aspect of the present invention, there is provided a first step of estimating interruption of a video program received by wireless communication, and storage of interruption information for resuming the video program when the video program is interrupted A video display method comprising: a second step of recording in the means; and a third step of transmitting a restart request signal for requesting restart of the video program using the interrupt information. Sometimes, it has the effect of easily resuming viewing and changing to another video display device without taking the beginning of an interrupted scene and troublesome billing / authentication work.

  According to an eighth aspect of the present invention, there is provided the video display method according to claim 7, wherein the first step is to estimate the interruption of the video program at a predetermined time interval. Even if the viewing is interrupted unexpectedly such as interruption, the viewing can be easily resumed.

9. The video according to claim 7, wherein the first step further includes a step of inputting a user's stop operation, and the interruption of the video program is estimated using the user operation input. This is a display method, and has the effect of allowing viewing to be easily resumed even when viewing is interrupted by a user operation.

  Hereinafter, embodiments will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a configuration diagram of an entire system including a video display device of the present invention. As shown in FIG. 1, a video display device 2, a management server 1, and a distribution server 4 are connected via the Internet 3.

  Here, when the video display device 2 starts viewing the content, the management server 1 acquires content information including a content ID, the location of the distribution server 4, a password for connecting to the distribution server 4, and the like. It is a server.

  The content information includes at least one of a content ID of a video program, a video program name, a resolution, a connection ID to the distribution server 4, a password to the distribution server 4, and an encryption key used for descrambling. The distribution server 4 is a server that distributes the video program to the video display device 2 that has requested distribution of the video program. The distribution server 4 is charged using the password, user / terminal information, and the like acquired from the management server 1. -It can also have a function to authenticate.

  Here, although the management server 1 and the distribution server 4 are distinguished for convenience, they may be physically the same and do not necessarily need to be clearly separated.

  FIG. 2 is a configuration diagram of the inside of the video display device 2. The content information receiving unit 301 is a part that receives content information transmitted from the management server 1. The viewing time calculation means 303 is a part that periodically calculates the viewing time from the start of viewing based on a periodic update notification from the clock 302. The video program receiving means 304 is a part that receives the video program transmitted from the distribution server 4 that has received the viewing start request signal.

  The state monitoring sensor 305 is a part that monitors radio wave interruption, incoming call, user 6 instruction, reception abnormality, decoding abnormality, battery remaining amount decrease, and the like. The user operation input unit 306 is a part that notifies the interruption detection unit 308 of the video viewing stop operation by the user 6. The interruption information processing means 307 is a part that outputs interruption information for specifying the interruption point of the video program using the viewing time, the content information, and the user / terminal information when interruption information is input.

  The interruption detection unit 308 is a part that notifies the interruption information processing unit 307 of interruption when a signal is input from the state monitoring sensor 305 and an abnormality occurs or when a notification is received from the user operation input unit 306. . The interruption information storage unit 309 is a part that stores interruption information output from the interruption information processing unit 307. The user / terminal information storage unit 310 is a part that provides user / terminal information stored in advance in the video display device 2 in response to a request from the interruption information processing unit 307.

The display unit 311 is a part for displaying the video program received by the video program receiving unit 304. The content information creation unit 312 is a part that stores content information acquired when connected to the management server 1 and provides the content information in response to a request from the interrupt information processing unit 307. The restart request signal transmission unit 313 is a part that transmits a restart request signal generated based on the interruption information. The content information transmission unit 314 is a part that transmits the content information stored in the content information creation unit 312 to the management server 1. Viewing start request transmission means 3
Reference numeral 15 denotes a part that transmits the content information stored in the content information creation unit 312 to the distribution server 4.

  FIG. 3 is a sequence diagram showing a cooperation procedure from display of a video program to interruption of the video program.

  First, when the user 6 selects content to be viewed from the user operation input unit 306 and presses a determination button to instruct start of viewing, the content information generation unit 312 generates a content information request generated from the input user operation. A signal is transmitted from the content information transmitting means 314 to the management server 1 to request / acquire content information.

  Next, the content information transmitted to the video display device 2 is received by the content information receiving unit 301 and input to the content information creating unit 312. The content information creation unit 312 generates a viewing start request signal based on the content information and the user / terminal information, and transmits it to the distribution server 4 via the viewing start request transmission unit 315.

  Next, the distribution server 4 that has received the viewing start request signal performs authentication, and if successful, distributes the video program to the video display device 2. Start billing if necessary. Next, the video program receiving unit 304 receives the video program, the display unit 311 decodes the received video program and displays the video, and at the same time, the viewing time calculation unit 303 starts calculating the viewing time.

  Next, when the interruption detection unit 308 receives the input from the state monitoring sensor 305 and the viewing is interrupted for reasons such as a radio wave interruption, an incoming call, a user 6 instruction, a reception abnormality, a decoding abnormality, or a low battery level from the sensor information If determined, the video interruption estimation signal is output to the interruption information processing means 307. Next, when the video interruption estimation signal is input, the interruption information processing unit 307 automatically saves the viewing time, content information, and user / terminal information in the interruption information storage unit 309.

  Next, an operation procedure until a request for restarting the interrupted video is transmitted will be described with reference to the flowchart of FIG.

  First, the clock 302 periodically sends an update notification to the viewing time calculation unit 303. Upon receiving the update notification, the viewing time calculation means 303 calculates / updates the viewing time and stores it.

  When the interruption detection unit 308 estimates a viewing interruption based on an instruction from the user 6 from the user's input from the user operation input unit 306 when the interruption detection unit 308 estimates the interruption of the radio wave, the incoming call, the reception abnormality, the decoding abnormality, the remaining battery level or the user 6 (S401), and when viewing interruption is not estimated, the process proceeds to S401. Upon receiving the notification, the interruption information processing unit 307 acquires the viewing time from the viewing time calculation unit 303, the content information from the content information creation unit 312, and the user / terminal information from the user / terminal information storage unit 310 (S402). The interrupt information is output to the interrupt information storage unit 309 as interrupt information (S403). Thereafter, when the user 6 instructs to resume viewing, the resumption request transmission unit generates a resumption request signal from the interruption information stored in the interruption information storage unit 309 and transmits it to the distribution server 4 (S404). .

  It should be noted that the above operation may be performed periodically in preparation for sudden power interruption. The configuration diagram in this case is as shown in FIG. In FIG. 5, the clock 302 is also output to the interruption information processing unit 307 instead of the interruption detection unit 308, and the viewing time is calculated and the interruption information is stored at the timing of the clock 302. The timing when a video packet is received instead of the clock 302 may be used as a trigger.

  Next, the procedure for storing the interruption information at the timing of the clock 302 will be described with reference to the flowchart of FIG.

  First, the clock 302 periodically sends an update notification to the viewing time calculation unit 303 and the interruption information processing unit (S601). Upon receiving the update notification, the viewing time calculation means 303 updates the viewing time and stores it (S602).

  Next, the interruption information processing unit 307 uses the update notification as a trigger to acquire the viewing time from the viewing time calculation unit 303, the content information from the content information creation unit 312, and the user / terminal information from the user / terminal information storage unit 310. Then, the interruption information storage unit 309 stores the interruption information (S604). Thereafter, when the user 6 instructs to resume viewing, the restart request transmission unit generates a restart request signal from the suspension information and transmits it to the distribution server 4 (S605).

  Through the above procedure, the video display device 2 can automatically store the interruption information in the terminal when the viewing is interrupted.

  Next, FIG. 7 illustrates a case where viewing is resumed from an interrupted scene, using the sequence diagram of FIG.

  First, the user 6 inputs viewing start to the user operation input means 306. Next, the restart request signal transmission unit 313 creates a restart request signal created based on the suspension information stored in the suspension information storage unit 309 and transmits it to the distribution server 4. Next, the distribution server 4 searches for the corresponding content from the received restart request signal based on the content information and the user / terminal information, and performs authentication. Also, the position from which the video program is to be distributed is determined from the viewing time in the restart request signal, and the video program from the point of interruption is distributed to the video display device 2.

  Next, the video program receiving unit 304 receives the video program from the point of interruption, the display unit 311 decodes the video program and displays the video, and at the same time, the viewing time calculation unit 303 calculates the viewing time. Resume.

  FIG. 8 is a sequence diagram in a case where viewing is resumed from the interrupted scene on another video display device 5 different from the video display device 2.

  First, the user 6 designates another video display device for displaying a video program via the user operation input means 306. Next, the restart request signal transmission unit 313 transfers the restart request signal to another designated video display device based on the stored interruption information. Next, another video display device 5 transfers a part or all of the received restart request signal to the distribution server 4. At this time, the resolution information, the physical position information, and the position information on the Internet 3 in the restart request signal may be changed to match another video display device 5 and then transmitted.

  Next, the distribution server 4 searches for the corresponding content from the received restart request signal based on the content information and the user / terminal information, and performs authentication. Also, the position from which the video program is to be distributed is determined from the viewing time in the restart request signal, and the video program is distributed to another video display device 5. Upon receiving the video program, another video display device 5 decodes the video program and displays the video, and at the same time starts calculating the viewing time.

Here, when the video display device 2 transfers the restart request signal to another video display device 5, a viewing right transfer proof indicating that the video display device 2 has transferred the viewing right to another video display device 5 in advance. By transmitting to the management / distribution server 4, it is possible to solve the problem that authentication cannot be performed due to switching of the viewing device, or recharging occurs. In that case, the video display device 2 encrypts the viewing right transfer certificate with the private key of the video viewing terminal or the public key provided by the management / distribution server 4 and transfers it to another video display device together with the restart request signal. The video display device may transmit to the management / distribution server 4.

  For broadcast-type content that does not support interruption / resumption, resume viewing by transferring a resumption request signal to the distribution server 4 of the service that stores the content for those who missed the broadcast. It is also possible to make it possible. It is also possible to record a video program from an interruption scene by replacing another video display device with a recording device and transferring interruption information to the recording device.

  With the above configuration, the user 6 can use the video display device 2 as follows.

  If the user 6 enters a place where communication radio waves do not reach such as an underground shopping area while viewing the VOD program using the video display device 2, the communication data is interrupted and the video is not captured. However, the interruption detection unit 308 detects a reception abnormality, and the interruption information processing unit 307 automatically saves the interruption information in the storage area without making the user aware of it. When the user wants to resume from the scene where the viewing was interrupted when the user exited the underground shopping area and restarted from the scene where the viewing was interrupted, when the video viewing application is launched and the restart is instructed, the viewing terminal generates the restart based on the interruption information By transmitting the request signal to the distribution server 4, viewing can be resumed without starting a scene and annoying work such as authentication work.

  The video display apparatus of the present invention is useful for a portable television having a VOD program viewing function, a multi-function mobile phone or the like.

The figure which shows the structure of the video delivery system containing the video display apparatus by the 1st Embodiment of this invention. The figure which shows the structure of the video display apparatus by the 1st Embodiment of this invention. The sequence diagram which showed the operation | movement procedure of the video delivery system by the 1st Embodiment of this invention The flowchart which shows operation | movement of the video display apparatus by the 1st Embodiment of this invention. The figure which shows the structure of the video display apparatus by the 1st Embodiment of this invention. The flowchart which shows operation | movement of the video display apparatus by the 1st Embodiment of this invention. The sequence diagram which showed the operation | movement procedure of the video delivery system by the 1st Embodiment of this invention The sequence diagram which showed the operation | movement procedure of the video delivery system by the 1st Embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Management server 2 Video display apparatus 3 Internet 4 Distribution server 6 User 301 Content information receiving means 302 Clock 303 Viewing time calculating means 304 Video program receiving means 305 State monitoring sensor 306 User operation input means 307 Interruption information processing means 308 Interruption detection means 309 Interruption information storage means 310 User / terminal information storage means 311 Display means 312 Content information creation means 313 Restart request signal transmission means 314 Content information transmission means 315 Viewing start request transmission means

Claims (9)

Interruption detection means for estimating interruption of a video program received by wireless communication, and interruption information processing for recording interruption information for resuming the video program in interruption information storage means when interruption of the video program is estimated And a transmission means for transmitting a resumption request signal for requesting resumption of the video program using the interruption information. 2. The video display device according to claim 1, wherein the interruption detecting means estimates interruption of the video program at a predetermined time interval. The video display device according to claim 1, further comprising user operation input means for inputting a user stop operation, wherein the interruption detection means estimates interruption of the video program using the user operation input. 4. The video display device according to claim 1, wherein the restart request signal is a signal further including information of a video display device that outputs a video program to be restarted. 5. The video display device according to claim 1, wherein the interruption information includes at least one of content information of the video program, user information, terminal information, and viewing time until the video program is interrupted. The content information includes at least one of information on a distribution server that distributes the video program, a content ID of the video program, a video program name, a resolution, a connection ID to the distribution server, a password to the distribution server, and an encryption key used for descrambling. The video display device according to claim 5, comprising: A first step of estimating the interruption of the video program received by wireless communication; and a second step of recording interruption information for resuming the video program in the interruption information storage means when the interruption of the video program is estimated. And a third step of transmitting a resumption request signal for requesting resumption of the video program using the interruption information. 8. The video display method according to claim 7, wherein the first step is to estimate interruption of the video program at a predetermined time interval. The video display method according to claim 7, wherein the first step further includes a step of inputting a user's stop operation, and estimating the interruption of the video program using the user operation input.

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