WO2016078173A1

WO2016078173A1 - Time shifting program playing method and device

Info

Publication number: WO2016078173A1
Application number: PCT/CN2014/093720
Authority: WO
Inventors: 王云华
Original assignee: 深圳Tcl新技术有限公司
Priority date: 2014-11-18
Filing date: 2014-12-12
Publication date: 2016-05-26
Also published as: CN105592325A; CN105592325B

Abstract

Disclosed is a time shifting program playing method, comprising: acquiring a time shifting playing time Tstar, a live time Tcurrent, a disorder time Tterr and a time shifting time Tdis; according to the time shifting playing time Tstar, the live time Tcurrent, the disorder time Tterr and the time shifting time Tdis, determining a synchronization shift time Tshift; and according to the synchronization shift time Tshift, correcting a time shifting program. Also disclosed is a time shifting program playing device. The present invention solves the problem of time shifting program disorder, thereby enhancing the user experience and improving the audience satisfaction.

Description

Time shift program playing method and device

Technical field

The present invention relates to the field of audio and video broadcasting, and more particularly to a method and apparatus for playing a time-shifted program.

Background technique

Time-shifted programs, also called time-shifted programs, refer to the content of live broadcasts played by viewers in the past. Time-shifted programs have high-definition resolution and multiple sets of program content, which is increasingly favored by viewers. However, when playing TV When the program is moved, the content of the program that appears is disordered. For example, when the viewer is watching CCTV1's "News Network", the TV suddenly inserts "You from the Stars" ten seconds later, and then replays the news program, thus making the audience feel very Strange, especially for viewers who like to watch TV dramas, when the audience is following the story deep, and the characters in the same drama share the same fate, suddenly insert a messy program, which is equivalent to inserting an advertisement. Let the audience feel very annoyed about it. Therefore, if the solution to the disorder of the time-shifting program is solved, it is an urgent problem to be solved.

Summary of the invention

The time-shift program playing method and apparatus provided by the present invention are directed to solving the problem of disorder of time-shifted programs.

To achieve the above objective, the present invention provides a time shift program playing method, including the following steps:

Obtaining time shift play time T _star , live time T _current , missed time T _terr and time shift time T _dis ;

Determining a synchronization offset time T _shift according to the time shift play time T _star , the live broadcast time T _current , the error time T _{terr ,} and the time shift time T _dis ;

The time-shifted program is corrected according to the synchronization offset time T _shift .

Preferably, the step of acquiring the time shift play time T _star , the live broadcast time T _current ambiguity time T _terr and the time shift time T _dis includes:

Intercepting video image information of the time-shifted program during video playback;

Obtaining a time shift play time T _{star of} the time shift program according to the video image information.

Preferably, the step of acquiring the time shift play time T _star , the live broadcast time T _current , the missed time T _terr and the time shift time T _dis includes:

Query electronic program menu information;

Obtaining the live time T _{current of} the television program according to the electronic program menu information.

Preferably, the tampering time Tterr is a time included when erroneously inserting other video images, and the synchronization offset time Tshift=Tcurrent-Tstar-Tterr-Tdis.

Preferably, the step of performing synchronization correction on the time-shifted program of the television broadcast according to the synchronization offset time T _shift includes:

Correcting a time shift playing time of the time shift program according to the synchronization offset time Tshift;

Time-shifting the time-shifted program is performed according to the corrected time-shifted playing time.

In order to solve the above technical problem, the present invention further provides a time shift program playing apparatus, including:

The obtaining module is configured to obtain a time shift play time T _star , a live broadcast time T _current , a missed time T _{terr ,} and a time shift time T _dis ;

a determining module, determining a synchronization offset time T _shift according to the time shift playing time T _star , the live time T _current , the tamper time T _terr and the time shift time T _dis ;

The calibration module corrects the time-shifted program according to the synchronization offset time T _shift .

Preferably, the obtaining module comprises:

An intercepting unit, configured to intercept video image information of the time-shifted program during video playback;

And a time shift playing time acquiring unit, configured to acquire a time shift playing time T _{star of} the time shifting program according to the video image information.

Preferably, the obtaining module further includes:

a query unit, configured to query the electronic program menu information;

The live broadcast time acquisition unit is configured to acquire the live broadcast time T _{current of} the television program according to the electronic program menu information.

Preferably, the calibration module comprises:

a correction unit, configured to correct a time shift playing time of the time shift program according to the synchronization offset time Tshift;

a playing unit, configured to perform time-shifted playback of the time-shifted program according to the corrected time-shifted playing time.

The present invention provides a time shift program playing method and a time shift program playing device, which acquires a time shift play time T _star , a live broadcast time T _current , a missed time T _{terr ,} and a time shift time T _dis ; according to the time shift play time T _star , the live time T _current , the missed time T _terr and the time shift time T _dis , determining a synchronization offset time T _shift ; and correcting the time shift program according to the synchronization offset time T _shift . The invention solves the problem of time-shifted program confusion, enhances user experience and improves audience satisfaction.

DRAWINGS

1 is a schematic flow chart of an embodiment of a time shift program playing method according to the present invention;

2 is a schematic diagram of a first refinement process of the steps of acquiring a time shift play time T _star , a live broadcast time T _current , a missed time T _{terr ,} and a time shift time Tdis as illustrated in FIG. 1 ;

3 is a second refinement flow diagram of the steps of the steps of acquiring the time shift play time T _star , the live broadcast time T _current , the missed time T _{terr ,} and the time shift time Tdis in FIG. 1 ;

4 is a schematic diagram showing a refinement process of the step of correcting a time-shifted program according to the synchronization offset time T _{shift in} FIG. 1;

5 is a schematic diagram of functional modules of an embodiment of a time shift program playing apparatus according to the present invention;

6 is a schematic diagram of a first functional module of the acquisition module of FIG. 5;

7 is a schematic diagram of a second functional module of the acquisition module of FIG. 5;

FIG. 8 is a schematic diagram of functional modules of the calibration module of FIG. 5.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present invention provides a method for playing a time-shifted program. Referring to FIG. 1 , FIG. 1 is a schematic flowchart of a method for playing a time-shifted program according to an embodiment of the present invention. In an embodiment, the method for playing a time-shifted program includes the following steps:

Step S100: Obtain a time shift play time T _star , a live broadcast time T _current , a missed time T _{terr ,} and a time shift time T _dis .

The time shift program playing device receives the time shift instruction, intercepts the video image information of the time shifting program during the current time shifting, and obtains the channel information when the television plays the current video in time shift according to the captured video image information during the current time shifting play. And the time shift play time T _star , wherein the time shift play time Tstar refers to the time when the viewer plays back the program content of the past time, for example, the time shift play time Tstar of the time shift program of "From the stars" is 10 points, that is, from 10 o'clock. Play "You from the Stars".

The time-shifted program playback device queries the EPG (electrical program guide) to obtain the live broadcast time Tcurrent of the television program according to the information recorded by the EPG. As shown in Table 1, Table 1 is an EPG, as shown in Table 1, on the EPG. The recorded "From the Stars" in the channel CCTV1 play the first episode of the play time is 10:30, you can know that "From the stars of you" live time Tcurrent is 10:30.

Table 1

Trouble time Tterr is the time included in the error insertion of other video images. There are two main sources of Tterr: one is because the time and latitude calibration are different in different parts of the country, and the transmitting station will carry other images during the program playback. Transfer, that is, the time when the other program is suddenly inserted while playing the current program. For example, when the viewer is watching CCTV1's "News Network", the TV suddenly inserts the "You from the Stars" for ten seconds, and the ten seconds of the insertion is For the confusing time Tterr; the other: the local receiving station finds that the image content sent by the main station has the length of time that other programs appear. The ambiguous time Tterr can be directly obtained by capturing the error information of other videos by the time-shifting program playing device. For example, the total error time of capturing other video playing videos is 30 seconds, indicating that the time-shifted program playing device is playing at time shift. The trouble time Tterr is 30 seconds. Time shift time Tdis is fixed configuration The time is set according to the actual needs of the user. For example, the user sets the time to 30 minutes, that is, the time shift playback is theoretically performed after 30 minutes.

Step S200: Determine a synchronization offset time T _shift according to the time shift play time T _star , the live broadcast time T _current , the error time T _{terr ,} and the time shift time T _dis .

The time shift program playing device calculates the synchronization offset time Tshift according to the time shifting time Tstar, the live time Tcurrent, the garbled time Tterr and the time shift time Tdis, and the synchronization offset time Tshift=Tstar-Tcurrent-Tterr-Tdis As shown in Table 2, the synchronization offset time Tshift is obtained by calculation.

Table 2

Step S300, correcting the time shift program according to the synchronization offset time Tshift.

The time-shifted program playing device corrects the playing time of the television program according to the calculated synchronization offset time Tshift, so that the played television program is synchronized with the preset time-shifted program. For example, referring further to FIG. 2, in the CCTV2 channel, The live time Tcurrent is 10:30, the time shift playback time (T _star ) is 10:1, the time shift time Tdis set by the user is 30 minutes, and the acquired time Tterr is 3 minutes, then the formula Tshift=Tstar- Tcurrent-Tterr-Tdis, calculate the synchronization offset time Tshift to be negative 4 minutes, then play the time-shifted program content after skipping for 4 minutes; if the synchronization offset time Tshift is calculated to be positive 3 minutes, the program content will be time-shifted The cache is delayed after 3 minutes of playback.

The time-shift program playing method provided in this embodiment corrects the garbled time of the time-shifted program, thereby enhancing the user experience and improving the audience satisfaction.

Referring to FIG. 2, FIG. 2 is a schematic diagram of a first refinement process of step S100 in FIG. 1. In FIG. 2, the step S100 includes:

Step S110, intercepting video image information of the time-shifted program during video playback.

The time-shifted program playback device receives the time shift instruction and acquires the current video image information by intercepting the television program mode.

Step S120: Acquire a time shift playing time T _{star of} the time shift program according to the video image information.

The time shift program playing device identifies the channel name corresponding to the current picture by the time shift screening icon channel name algorithm according to the video image information of the intercepted television program, and attaches the channel number and name of the program to the storage area 1: reading the storage The image pixel data of one tenth of the vertical direction of the picture in the area 1 and all of the horizontal direction (the position where the start point x is 0 and the y axis is 0) is stored in the storage area 2.

The time-shifted program playing device searches and arranges all the frequency information of the specified range, as shown in Table 1, and stores it in the storage area 3, and reads the vertical direction of each frame of each channel in the storage area 3 One and the horizontal direction are all compared with the picture in the storage area 2. If the size is the same, the white pixels in the pixel data are subtracted two to obtain a set of image data, wherein the smallest value is the current time shift The program channel is the same as the live broadcast.

E.g:

Input section:

The entire image: 1280 (X) x 720 (Y), indicating that the current image has a resolution of 1280x720, a length of 1280, and a width of 720.

Set the following parameters, among them,

Pic_xstar: The pixel position at which the horizontal direction of the time-shifted program starts, for example: Pic_xstar=1.

Pic_xend: The pixel position at which the horizontal direction of the time-shifted program ends, for example: Pic_xend=1280, taking all the pixels in the horizontal direction.

Pic_ystar: The pixel position at which the vertical direction of the time-shifted program starts, for example: Pic_ystar=1.

Pic_yend: The pixel position at which the vertical direction of the time-shifted program ends, for example: Pic_yend=720/10=72, the line pixel, which is one tenth of the pixel in the vertical direction.

Pic_Dxstar: The pixel position at which the live program starts in the horizontal direction, for example: Pic_Dxstar=1.

Pic_Dxend: The pixel position of the live program ending in the horizontal direction, for example: Pic_Dxend=1280.

Pic_Dystar: The pixel position of the live program starting from the vertical direction, for example: Pic_Dystar=1.

Pic_Dyend: The pixel position of the live program ending in the vertical direction, for example: Pic_Dyend=720/10=72, line pixel.

LogR=0x00, red pixel is 0,

LogG=0x00, green pixel is 0,

LogB=0x00, blue pixel is 0,

When the LogR, LogG, and LogB are all 0 pixels, it is expressed as the color of the current icon.

Output section:

Set the following parameters, among them,

Time shift filter icon channel name pixel difference: LogOutputPixDis, for example: LogOutputPixDis=0, indicating that it is currently CCTV1, corresponding channel number 1.

The sum of the white pixels in the pixels of the channel icon of the time-shifted image,

For example: CCTV1, 10+10+20+10+10=60.

The sum of white pixels in the pixels of the channel logo of the live picture,

For example: CCTV1, 10+10+20+10+10=60.

in case,

Then, the channel of the current time shifting program is the same as the channel of the live program.

Referring to FIG. 3, FIG. 3 is a schematic diagram of a second refinement process of step S100 in FIG. 1. In FIG. 3, the step S100 includes:

Step S210: Query the electronic program menu information.

The time-shifted program playback device queries the EPG (electrical program guide), for example, the live broadcast time Tcurrent of the "news broadcast" recorded on the EPG is 19 points.

Step S220: Acquire, according to the electronic program menu information, the live time T _{current of} the television program.

The time-shifted program playback device acquires the live broadcast time Tcurrent of the television program according to the information recorded by the EPG. For example, the live broadcast time of the "news broadcast" recorded on the EPG is 19 points, and the live broadcast time Tcurrent of "news broadcast" is known. 19 o'clock.

Referring to FIG. 4, FIG. 4 is a schematic diagram of a refinement process of step S300 in FIG. 1. In FIG. 4, the step S300 includes:

The time shift program playing method provided in this embodiment, the step S300 specifically includes:

Step S310, correcting the time shift playing time Tstar of the time shift program according to the synchronization offset time Tshift.

The time-shifted program playing device corrects the playing time of the television program according to the calculated synchronization offset time Tshift. For example, if the synchronization offset time Tshift is calculated to be negative 4 minutes by calculation, the time-shifted program content is skipped 4 After a minute, the playback is performed; if the synchronization offset time Tshift is calculated to be positive for 3 minutes, the time-shifted program content buffer is delayed by 3 minutes and then played.

Step S320: Perform time-shift playback on the time-shifted program according to the corrected time-shifted play time.

The time-shifted program playing device performs time-shifted playback on the currently played time-shifted program according to the corrected time-shifted playing time, so that the played time-shifted program is synchronized with the preset time-shifted program playing time.

The embodiment also provides a time shift program playing device. As shown in FIG. 5, FIG. 5 is a schematic diagram of functional modules of an embodiment of a time shift program playing device according to an embodiment of the present invention. In an embodiment, the time shift program playing device include:

The obtaining module 10 is configured to acquire a time shift play time T _star , a live broadcast time T _current , a missed time T _{terr ,} and a time shift time T _dis ;

The determining module 20 determines the synchronization offset time T _shift according to the time shift playing time T _star , the live time T _current , the tamper time T _terr and the time shift time T _dis ;

The calibration module 30 corrects the time-shifted program according to the synchronization offset time T _shift .

The acquiring module 10 of the time shift program playing device receives the time shift instruction, intercepts the video image information of the time shifting program during the current time shifting, and obtains the current video of the television in time shift according to the captured video image information during the current time shifting playback. Time channel information and time shift play time T _star , wherein time shift play time Tstar refers to the time when the viewer plays back the program content of the past time, for example, the time shift play time Tstar of the time shift program of "From the Stars" is 10 points, That is, "You from the Stars" is played from 10 o'clock. The time-shifted program playback device queries the EPG (electrical program guide) to obtain the live broadcast time Tcurrent of the television program based on the information recorded by the EPG. As shown in Table 1, Table 1 is the EPG. As can be seen from Table 1, the "From the Stars" recorded on the EPG is 10:30 in the first episode of CCTV1. You can know that "from the stars." The live broadcast time Tcurrent is 10:30. Trouble time Tterr is the time included in the error insertion of other video images. There are two main sources of Tterr: one is because the time and latitude calibration are different in different parts of the country, and the transmitting station will carry other images during the program playback. Transfer, that is, the time when the other program is suddenly inserted while playing the current program. For example, when the viewer is watching CCTV1's "News Network", the TV suddenly inserts the "You from the Stars" for ten seconds, and the ten seconds of the insertion is For the confusing time Tterr; the other: the local receiving station finds that the image content sent by the main station has the length of time that other programs appear. The ambiguous time Tterr can be directly obtained by capturing the error information of other videos by the time-shifting program playing device. For example, the total error time of capturing other video playing videos is 30 seconds, indicating that the time-shifted program playing device is playing at time shift. The trouble time Tterr is 30 seconds. The time shift time Tdis is a fixed configuration time, and is set according to the actual needs of the user. For example, the user sets the time to 30 minutes, that is, the time shift playback is theoretically performed after 30 minutes.

The determining module 20 of the time shift program playing device calculates the synchronization offset time Tshift according to the time shifting time Tstar, the live time Tcurrent, the garbled time Tterr and the time shift time Tdis, and the synchronization offset time Tshift=Tstar-Tcurrent -Tterr-Tdis, as shown in Table 2, by calculation, the synchronization offset time Tshift is obtained.

The calibration module 30 of the time shift program playing device corrects the playing time of the television program according to the calculated synchronization offset time Tshift, so that the played television program is synchronized with the preset time shift program, for example, see FIG. 2 further. In the CCTV2 channel, the live time Tcurrent is 10:30, the time-shifted play time (T _star ) is 10:1, the user-set time shift time Tdis is 30 minutes, and the acquired time Tterr is 3 minutes. Tshift=Tstar-Tcurrent-Tterr-Tdis, calculate the synchronization offset time Tshift to be negative for 4 minutes, then skip the time-shifted program content after 4 minutes of play; if the calculated synchronization offset time Tshift is positive for 3 minutes, then The time-shifted program content cache is delayed after 3 minutes of playback.

The time-shift program playing device provided in this embodiment corrects the garbled time of the time-shifted program, thereby enhancing the user experience and improving the audience satisfaction.

As shown in FIG. 6, the time shift program playing device provided in this embodiment, the intercepting module 10 includes:

The intercepting unit 11 is configured to intercept video image information of the television program during time-shift playback;

The time shift obtaining unit 12 is configured to acquire channel information of the television program and a time shift playing time Tstar according to the video image information.

The intercepting unit 11 of the time shift program playing device receives the time shift instruction and acquires the current video image information by intercepting the television program mode.

The time shift obtaining unit 12 of the time shift program playing device recognizes the channel name corresponding to the current picture by the time shift screening icon channel name algorithm according to the video image information of the intercepted television program, and attaches the channel number and name of the program to the storage area. 1 : Image pixel data of one tenth of the vertical direction of the picture in the storage area 1 and all of the horizontal direction (the position where the start point x is 0 and the y axis is 0) are stored in the storage area 2.

E.g:

Input section:

Set the following parameters, among them,

Pic_yend: The pixel position at which the vertical direction of the time-shifted program ends, for example: Pic_yend =720/10=72, row pixels, taking one tenth of the pixels in the vertical direction.

LogR=0x00, red pixel is 0,

LogG=0x00, green pixel is 0,

LogB=0x00, blue pixel is 0,

Output section:

Set the following parameters, among them,

For example: CCTV1, 10+10+20+10+10=60.

The sum of white pixels in the pixels of the channel logo of the live picture,

For example: CCTV1, 10+10+20+10+10=60.

in case,

As shown in FIG. 7, the time shift program playing device provided in this embodiment, the acquiring module 10 further includes:

The query unit 13 is configured to query the electronic program menu information;

The live broadcast obtaining unit 14 is configured to acquire channel information of the television program and the live broadcast time according to the electronic program menu information.

The inquiry unit 13 of the time-shifted program playback device queries the EPG (electrical program guide, for example, the live broadcast time Tcurrent of the "News Network" recorded on the EPG is 19 points.

The live broadcast acquisition unit 14 of the time-shifted program playback device acquires the live broadcast time Tcurrent of the television program according to the information recorded by the EPG. For example, if the live broadcast time of the "news broadcast" recorded on the EPG is 19 points, the "news broadcast" can be known. The live time Tcurrent is 19 points.

As shown in FIG. 8, the time shift program playing device provided in this embodiment, the calibration module 40 includes:

a correcting unit 41, configured to correct a playing time of the television program;

The playing unit 42 is configured to perform time-shift playback on the television program according to the corrected playing time.

The correction unit 41 of the time shift program playback apparatus corrects the play time of the television program based on the calculated synchronization offset time Tshift, for example, if the synchronization offset time Tshift is calculated to be negative 4 minutes by calculation, the time shift program is The content is skipped after 4 minutes of play; if the synchronization offset time Tshift is calculated to be positive 3 minutes, the time-shifted program content buffer is delayed by 3 minutes and then played.

The playing unit 42 of the time-shifted program playing device performs time-shifted playback on the currently played time-shifted program according to the corrected time-shifted playing time, so that the played time-shifted program is synchronized with the preset time-shifted program playing time. .

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A time shift program playing method, characterized in that the time shift program playing method comprises the following steps:

Obtaining time shift play time Tstar, live broadcast time Tcurrent, missed time Tterr and time shift time Tdis;

Determining a synchronization offset time Tshift according to the time shift play time Tstar, the live broadcast time Tcurrent, the error time Tterr, and the time shift time Tdis;

The time shift program is corrected according to the synchronization offset time Tshift.
The time shift program playing method according to claim 1, wherein the step of acquiring the time shift play time Tstar, the live broadcast time Tcurrent ambiguity time Tterr, and the time shift time Tdis comprises:

Intercepting video image information of the time-shifted program during video playback;

Obtaining a time shift playing time Tstar of the time shifting program according to the video image information.
The time shift program playing method according to claim 1, wherein the step of acquiring the time shift play time Tstar, the live broadcast time Tcurrent, the missed time Tterr, and the time shift time Tdis comprises:

Query electronic program menu information;

Obtaining the live time Tcurrent of the television program according to the electronic program menu information.
The time shift program playing method according to claim 2, wherein the step of acquiring the time shift play time Tstar, the live broadcast time Tcurrent, the missed time Tterr, and the time shift time Tdis comprises:

Query electronic program menu information;

Obtaining the live time Tcurrent of the television program according to the electronic program menu information.
A time shift program playing method according to claim 1, wherein said spoofing time Tterr is the time contained in the error insertion of other video images, the synchronization offset time Tshifi=Tcurrent-Tstar-Tterr-Tdis.
The time shift program playing method according to claim 2, wherein the tampering time Tterr is a time included when erroneously inserting other video images, and the synchronization offset time Tshifi=Tcurrent-Tstar-Tterr-Tdis.
The time shift program playing method according to claim 3, wherein the sever time Tterr is a time included when erroneously inserting other video images, and the synchronization offset time Tshifi=Tcurrent-Tstar-Tterr-Tdis.
The time shift program playing method according to claim 1, wherein the step of synchronously correcting the time-shifted program of the television broadcast according to the synchronization offset time Tshift comprises:

Correcting the time shift playing time Tstar of the time shift program according to the synchronization offset time Tshifi;

Time-shifting the time-shifted program is performed according to the corrected time-shifted playing time.
The time shift program playing method according to claim 2, wherein the step of synchronously correcting the time-shifted program of the television broadcast according to the synchronization offset time Tshift comprises:

Correcting the time shift playing time Tstar of the time shift program according to the synchronization offset time Tshifi;

Time-shifting the time-shifted program is performed according to the corrected time-shifted playing time.
The time shift program playing method according to claim 3, wherein the step of synchronously correcting the time-shifted program of the television broadcast according to the synchronization offset time Tshift comprises:

Correcting the time shift playing time Tstar of the time shift program according to the synchronization offset time Tshifi;

Time-shifting the time-shifted program is performed according to the corrected time-shifted playing time.
A time shift program playing device, wherein the time shift program playing device comprises:

An acquisition module, configured to acquire a time shift play time Tstar, a live broadcast time Tcurrent, a missed time Tterr, and a time shift time Tdis;

Determining a module, determining a synchronization offset time Tshifi according to the time shift play time Tstar, the live broadcast time Tcurrent, the tamper time Tterr, and the time shift time Tdis;

The calibration module corrects the time-shifted program according to the synchronization offset time Tshifi.
The time shift program playing device of claim 11, wherein the obtaining module comprises:

An intercepting unit, configured to intercept video image information of the time-shifted program during video playback;

And a time shift playing time acquiring unit, configured to acquire a time shift playing time Tstar of the time shifting program according to the video image information.
The time shift program playing device of claim 11, wherein the obtaining module further comprises:

a query unit, configured to query the electronic program menu information;

The live time acquisition unit is configured to acquire the live time Tcurrent of the television program according to the electronic program menu information.
The time shift program playing device of claim 12, wherein the obtaining module further comprises:

a query unit, configured to query the electronic program menu information;

The live time acquisition unit is configured to acquire the live time Tcurrent of the television program according to the electronic program menu information.
The time-shifted program broadcasting apparatus according to claim 11, wherein said erroneous time Tterr is a time included when erroneously inserting other video images, said synchronization offset time Tshift = Tcurrent - Tstar - Tterr - Tdis.
A time shift program playing apparatus according to claim 12, wherein said erroneous time Tterr is a time included when erroneously inserting other video images, said synchronization offset time Tshift=Tcurrent-Tstar-Tterr-Tdis.
A time shift program playing apparatus according to claim 13, wherein said erroneous time Tterr is a time included when erroneously inserting other video images, said synchronization offset time Tshift = Tcurrent - Tstar - Tterr - Tdis .
The time shift program playing device of claim 11, wherein the calibration module comprises:

a correction unit, configured to correct a time shift playing time Tstar of the time shift program according to the synchronization offset time Tshift;

a playing unit, configured to perform time-shifted playback of the time-shifted program according to the corrected time-shifted playing time.
The time shift program playing device of claim 12, wherein the calibration module comprises:

a correction unit, configured to correct a time shift playing time Tstar of the time shift program according to the synchronization offset time Tshift;

a playing unit, configured to perform time-shifted playback of the time-shifted program according to the corrected time-shifted playing time.
The time shift program playing device of claim 13, wherein the calibration module comprises:

a correction unit, configured to correct a time shift playing time Tstar of the time shift program according to the synchronization offset time Tshift;

a playing unit, configured to perform time-shifted playback of the time-shifted program according to the corrected time-shifted playing time.