JP2007300324A - Digital broadcast receiving, recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To distinctly present to a user information indicating whether contents of a data broadcast are current contents or contents recorded in the past when a data broadcast picture begins to be displayed during viewing of a television program. <P>SOLUTION: The digital broadcast receiving, recording and reproducing device has a date/time information analytic processing unit 9 which analyzes date/time information included in a transport stream from a tuner during viewing of a television program being broadcast at present or a transport stream during viewing a video-recorded program from a recording medium, and also has a video output composing unit 12 which puts together the data and time information of the television program being viewed or the video-recorded program found by the date/time information analytic processing unit 9, video data from a video processing unit 7, and a data broadcast part from a data broadcast processing unit 8. When a display indication for the data broadcast part is made through an operation unit 13, the data and time information corresponding to the television program being viewed or the video-recorded program is superposed on the video data to output the video. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an apparatus for receiving a digital broadcast program and recording / reproducing the program, and more particularly to a digital broadcast receiving / recording / reproducing apparatus having a data broadcast viewing function.

  Digital broadcasting is also beginning to spread in Japan. The main program content supplied in BS / CS / terrestrial digital broadcasting is a television program composed of high-definition video and audio data, but various multimedia data are attached to the main video and audio data. Is being sent. The accompanying broadcast part is generally called data broadcasting, and includes various services such as program information, news, weather information, shopping, games and quizzes.

  21 (cross cursor / decision button), 22 (data broadcast button), 23 (color button) are provided on a remote controller 20 (see FIG. 2) of a device capable of receiving a digital broadcast and having a function of viewing the data broadcast. The user can receive the various services described above by pressing these buttons 21, 22, and 23 and giving an action to the data broadcast content. When a data broadcast button (hereinafter referred to as “d button”) 22 of the remote controller 20 is pressed when viewing a digital broadcast program, if a data broadcast portion is attached to the television program, the screen is switched to a data broadcast screen as shown in FIG. . In the display example of FIG. 3, the data broadcast display screen 30 is a composite display of a reduced screen 31 of a television program as a main video and a data broadcast portion, and includes weather information 32, latest news 33, and program information 34. Yes.

  When switching to the data broadcast screen by pressing the d button 22 from the normal television program viewing state, the top screen of the data broadcast of each station as shown in this example is often transferred. From here, the cross cursor / decision button 21 of the remote controller 20 and the blue, red, green and yellow color buttons 23 are used to move to a more detailed content screen to obtain desired information.

  On the other hand, household recording / playback devices compatible with digital broadcast reception have begun to become widespread against the background of low price and large capacity of recording media in recent years. In the future, as the number of digital broadcast programs increases and services expand, and the capacity of recording media further increases, the number of contents that must be handled by recording and playback devices will increase greatly. Furthermore, if the network function is strengthened and content is handled in a client-server manner between devices, the number of contents that can be selected during viewing may increase significantly. A user who uses these devices selects a desired one out of a large amount of contents. At this time, it is particularly important whether the program is a digital broadcast program currently being broadcast or a program recorded previously. There is a demand for an interface that can select the content that the user wants to view most without being aware of it. In the future, recording and playback devices will be required to have a function for centrally managing viewable content.

  Data broadcasting sometimes distributes real-time information such as the latest news and weather information. However, when recording a digital broadcast TV program on a recording / playback device, data associated with the main TV program If there is a broadcast part, this data broadcast part is also recorded. Therefore, if the user tries to view the data broadcast part when playing the recorded program, the news and weather information at the time of recording will be displayed, so there is a possibility that the past information content may be mistaken for the current one. .

  The possibility of misidentifying whether the content being viewed is a broadcast program or a previously recorded program may not be so high at the present time, but the number of content that users can select and view will increase in the future However, as the viewing content selection function of the device is strengthened and the user interface is refined, where the content being viewed (or the substance of the content) exists (especially the client-server use described above) ), The sensation of whether it is a program currently being broadcast or a recorded program may be diminished, and the above-mentioned “misidentifies the information content of past data broadcasts as current” Risk can be high.

  The present invention has been made in view of such a technical background, and the purpose of the present invention is to determine whether the content of data broadcasting is current when the screen is changed to a data broadcasting screen while viewing a TV program. Digitally presenting information indicating whether the information was recorded in the data clearly to the user so that the user can be aware of the broadcast time of the information content of the data broadcast and avoid the risk of misidentifying the information content of the data broadcast An object of the present invention is to provide a broadcast receiving / recording / reproducing apparatus.

In order to solve the above problems, the present invention mainly adopts the following configuration.
A television program of video data and audio data, a digital broadcast program composed of a data broadcast portion attached to the television program is received, a transport stream of the received digital broadcast program is recorded on a recording medium and reproduced, and the transport A digital broadcast receiving / recording / reproducing apparatus for outputting video and audio of a stream,
A transport stream from a tuner at the time of viewing a television program currently being broadcast or a transport stream at the time of viewing a recorded program from the recording medium is input, and a video processing unit, an audio processing unit, a data broadcast processing unit, and the A date and time information analysis processing unit for analyzing and processing date and time information included in the transport stream, each having a data separation unit for separating and outputting data;
Video output for synthesizing the date / time information in the TV program or recorded program being viewed and obtained by the date / time information analysis processing unit, the video data from the video processing unit, and the data broadcast part from the data broadcast processing unit Having a synthesis part,
When there is an instruction to display the data broadcast portion through the operation unit, date and time information respectively corresponding to the television program or recorded program being viewed is superimposed on the video data and output.

  According to the present invention, when a television program is viewed, the date / time information message indicating whether the displayed data broadcast content is currently being broadcast or recorded in the past when the screen is shifted to the data broadcast screen. By superimposing on the video output, it is possible to clearly present the broadcast time (broadcast date and time) of the data broadcast content to the user and avoid the risk of misidentifying the information content of the data broadcast.

  A digital broadcast receiving / recording / reproducing apparatus according to first and second embodiments of the present invention will be described below with reference to FIGS. 1 to 5 and FIG.

“First Embodiment”
A digital broadcast receiving / recording / reproducing apparatus according to a first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing the configuration of a digital broadcast receiving / recording / reproducing apparatus according to the first embodiment of the present invention. FIG. 2 is a diagram showing a configuration of a remote controller in the digital broadcast receiving / recording / reproducing apparatus according to the first embodiment. FIG. 3 is a diagram showing an example of a data broadcast screen constituting a television program related to the first embodiment. FIG. 4 is a diagram showing a detailed configuration of a date / time information analysis processing unit in the digital broadcast receiving / recording / reproducing apparatus according to the first embodiment. FIG. 5 is a diagram showing a screen display example of a date / time information message in the digital broadcast receiving / recording / reproducing apparatus according to the first embodiment.

  In FIG. 1, a digital broadcast receiving / recording / reproducing apparatus 1 includes a tuner unit 3, a transport stream (hereinafter referred to as TS) decoder unit 4, a recording data processing unit 5, an audio processing unit 6, a video processing unit 7, a data broadcasting process. Unit 8, date and time information analysis processing unit 9, system control unit 10, recording medium 11, video output synthesis unit 12, operation unit 13, remote control light receiving unit 14, audio output unit 15, video output unit 16, and remote control 17, These components are interconnected as illustrated in FIG.

  Broadcast radio waves received via the antenna 2 are introduced into the tuner unit 3 as broadcast signals.

  The tuner unit 3 selectively receives a predetermined channel, demodulates the received broadcast signal, and derives a transport stream signal (TS signal). A transport stream (TS) can contain and transmit a plurality of programs (services), and video data and audio data constituting a television program as a main service, various data constituting a data broadcast program, or Additional data called PSI and program arrangement information (SI) defined in ISO / IEC13818-1 are packetized and multiplexed.

  The TS decoder unit 4 separates the TS signal supplied from the tuner unit 3 by a packet identifier called PID, and supplies each data to each corresponding processing unit in the subsequent stage. The audio processing unit 6 performs a decoding process on the compressed audio data supplied from the TS decoder unit 4 and converts it into an uncompressed digital audio signal. The digital audio signal is output as audio from the audio output unit 15. The video processing unit 7 performs a decoding process on the compressed video data supplied from the TS decoder unit 4, converts it into an uncompressed digital video signal, and outputs it to the video output synthesis unit 12. The data broadcast processing unit 8 performs so-called BML browser processing such as arranging each data such as characters, graphics, and images transmitted in the data carousel, performing display control, and generating a data broadcast screen. The generated data broadcast screen is supplied to the video composition unit 12.

  The date / time information analysis processing unit 9 analyzes the date / time information of the television program to be output, generates a date / time information OSD (on-screen display) screen based on the acquired date / time information, and supplies it to the video composition unit 12. The date / time information analysis process will be described in detail later. The video output synthesizing unit 12 is appropriately subjected to a superimposition process, a synthesis process, and the like on the video signal supplied from the video processing unit 7, the data broadcast processing unit 8, and the date and time analysis processing unit 9 according to an instruction from the system control unit 10. One video screen is generated and output as video from the video output unit 16.

  The recording data processing unit 5 performs processing for recording the partial TS signal supplied from the TS decoder unit 4 on the recording medium 11 during recording, and records a predetermined TS during recording. Is read out and supplied to the TS decoder unit 4. Note that the type of the recording medium 11 on which TS is recorded is not particularly mentioned in this specification. The system control unit 10 is connected to the operation unit 13 and the remote control light receiving unit 14, interprets a user instruction given from the operation unit 13 or the remote control 17, and appropriately controls each connected unit.

  Next, processing performed by the date / time information analysis processing unit 9 in the present embodiment will be described with reference to FIG. The TS decoder unit 4, the date information analysis processing unit 9, the system control unit 10, and the video output synthesis unit 12 in FIG. 4 illustrate the same components as in FIG. It comprises a table (hereinafter referred to as TOT) analysis unit 42, a date and time information recording unit 44, a real time clock (hereinafter referred to as RTC) unit 45, and a date and time information OSD screen generation unit 46.

  The time / date offset table (TOT) is a part of program arrangement information (SI) included in a TS signal in digital TV broadcasting, and is used to transmit JST (Japan Standard Time) time and date information. .

  When a TV broadcast is viewed on the digital broadcast receiving / recording / reproducing apparatus according to the embodiment of the present invention, the TS output from the tuner unit 3 or the recorded program is recorded on the recording medium 11 when the recorded program is reproduced. Any of the partial TSs read out from is input to the TS decoder unit 4, and the TOT data 41 is obtained by separating the TS packets that transmit the TOT.

  The TOT data 41 is supplied to the TOT analysis unit 42, the date information is decoded, and the date information 43 obtained here is held in the date information storage unit 44. This process is performed every time the TOT data 41 is acquired, and the latest date / time information is always held in the date / time information storage unit 44. An RTC (real time clock) unit 45 is used to perform a time measurement process. At the time of starting the operation, the date / time information 43 held in the date / time information storage unit 44 is loaded as an initial value, and thereafter the clocking process is continued by the internal free-running clock.

  The stored value in the date / time information storage unit 44 is sequentially updated by the date / time information 43 output by the TOT analysis unit 42. At this time, the system control unit 10 determines the date / time information stored in the date / time information storage unit 44 and The date / time information acquired from the RTC unit 45 is compared, and when the difference between the two information is equal to or greater than a predetermined threshold, the date / time information in the date / time information recording unit 44 is reloaded into the RTC unit 45. Is corrected, and the timing process is continued. By such processing, the contents of the TS signal 40 supplied to the TS decoder unit 4 can be continuously reflected. The above processing is always performed when viewing a TV broadcast with the digital broadcast receiving / recording / reproducing apparatus according to the present embodiment or reproducing a recorded program.

  In other words, if the TOT transmission interval is, for example, 30 seconds, the date information 43 is updated in the date information storage unit 44 every 30 seconds. This TOT is included in these programs regardless of whether the input to the TS decoder unit 4 is a currently broadcasted TV program or a recorded program from the recording medium 11, so When the television program is changed to the recorded program, the date and time stored in the date and time information storage unit 44 is changed from the current time to the recording time. When the time is changed, the changed time is reloaded into the RTC unit (because the above-described difference is equal to or greater than the threshold). In addition, even when an error occurs in the clocking of the free-running clock of the RTC unit and, for example, a difference occurs with the updated TOT (even when the threshold value is greater than or equal to the threshold value), the correction is made to match the TOT. can do.

  Since the date / time information output from the RTC unit 45 is sent to the date / time information OSD screen generation unit 46 to be described later, for example, an accurate time within the TOT transmission interval is displayed as the date / time information message 52 on the data broadcast screen. Can do. Incidentally, the second embodiment of the present invention is a circuit configuration that is simplified by ignoring the timing accuracy within the TOT transmission interval.

  The date / time information OSD screen generation unit 46 acquires date / time information from the RTC unit 45 according to an instruction from the system control unit 10 and presents the date and time corresponding to the TS signal 40 currently being processed to the user. A date / time information OSD screen 47 is generated and supplied to the video output combining unit 12.

  Next, in the digital broadcast receiving / recording / reproducing apparatus according to the present embodiment, the TV program currently being broadcast is being viewed or the program recorded in the past is being viewed (TS decoder 4 shown in FIG. 1). There are two input systems), and the operation when shifting to the data broadcasting screen will be described.

  While a program is being viewed, when the data broadcast button (d button) 22 of the remote controller 20 shown in FIG. 2 is pressed in the scene 50 shown in FIG. 5, the date / time information OSD screen generator 46 shown in FIG. A date / time information OSD screen 47 including a message indicating date / time information corresponding to the scene of the program being viewed as shown in 52 is generated.

  Here, in the conventional apparatus, when the d button 22 of the remote controller 20 is pressed, the main video signal output from the video processing unit 7 in FIG. 1 and the data broadcast screen output from the data broadcast processing unit 8 are displayed. The data broadcast screen 30 as shown in FIG. 3 is output by being synthesized by the video output synthesis unit 12. In this embodiment, after the d button 22 is pressed, the above-described date / time information OSD is set for a predetermined time. The screen 47 is also superimposed and output. An example of the screen output at this time is shown at 51 in FIG.

  In the screen output example 51, a message 52 indicating date and time information is combined with a normal television program display screen. Normally, when the d button 22 of the remote controller 20 is pressed and then a transition is made to the data broadcast screen (screen example 30 shown in FIG. 3), it takes some processing time. 3) and 30), the message 52 is superimposed, and the broadcast time of the data broadcast screen to be displayed thereafter can be clearly presented to the user. In order to reliably transmit the message 52 to the user, the data broadcast screen may be switched after a predetermined time has elapsed after the superimposed output of the message 52. In addition, date and time information may be notified by voice.

  Further, even after switching to the data broadcast screen, the message 52 may be kept present for a certain period.

“Second Embodiment”
Next, a digital broadcast receiving / recording / reproducing apparatus according to an embodiment of the present invention will be described with reference to FIG. FIG. 6 is a diagram showing a detailed configuration of the date / time information analysis processing unit in the digital broadcast receiving / recording / reproducing apparatus according to the second embodiment of the present invention. FIG. 6 shows a configuration different from the date / time information analysis processing unit 9 in the digital broadcast receiving / recording / reproducing apparatus according to the first embodiment of the present invention shown in FIG. In the second embodiment, the configuration other than the date / time information analysis processing unit 9 is common to the first embodiment.

  The date / time information analysis processing unit 9 in the digital broadcast receiving / recording / reproducing apparatus according to the second embodiment is different from the first embodiment in that the RTC unit 45 of FIG. 4 does not exist. In the second embodiment shown in FIG. 6, the data held in the date / time information storage unit 44 is used as it is as the date / time information used by the date / time information OSD screen generation unit 46. Usually, the transmission interval (update interval) of TOT is about 5 to 30 seconds in terrestrial digital broadcasting. For this reason, compared with the first embodiment, the resolution as the date and time information is lowered, but the RTC unit 45 is not necessary, and the component configuration and processing are simplified.

  In the second embodiment, it is only necessary to make the user aware of whether the data broadcast to be viewed is current or recorded in the past. However, it is not a problem.

  As described above, the embodiment of the present invention provides information indicating whether the content of the data broadcast is current or recorded in the past when shifting to the data broadcast screen while watching a TV program. It is a problem to be solved by the present invention to clearly present to the user and to make it aware of the broadcast time (broadcast time) of the information content of the data broadcast and avoid the risk of misidentifying the information content of the data broadcast. In addition, the main feature is that the broadcast magnetism of the data broadcast content is clearly presented to the user by superimposing the time information obtained from the TOT transmitted by the TS on the video output at the time of data broadcasting transition. It is.

It is a block diagram which shows the structure of the digital broadcast reception recording / reproducing apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows the structure of the remote control in the digital broadcast reception recording / reproducing apparatus which concerns on 1st Embodiment. It is a figure which shows the example of a data broadcast screen which comprises the television program regarding 1st Embodiment. It is a figure which shows the detailed structure of the date information analysis processing part in the digital broadcast reception recording / reproducing apparatus concerning 1st Embodiment. It is a figure which shows the example of a screen display of the date information message in the digital broadcast reception recording / reproducing apparatus which concerns on 1st Embodiment. It is a figure which shows the detailed structure of the date information analysis process part in the digital broadcast reception recording / reproducing apparatus which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Digital broadcast reception recording / reproducing apparatus 2 Antenna 3 Tuner part 4 TS decoder part 5 Recording data processing part 6 Audio processing part 7 Video processing part 8 Data broadcasting processing part 9 Date and time information analysis processing part 10 System control part 11 Recording medium 12 Video output Composition unit 13 Operation unit 14 Remote control light receiving unit 15 Audio output unit 16 Video output unit 17, 20 Remote control 21 Cross cursor / decision button 22 d button (data broadcast button)
23 Four-color buttons (blue, red, green, yellow)
30 Data Broadcast Display Screen 31 Main Video Reduction Screen 32 Weather Information 33 Latest News 34 Program Information 40 TS Signal 41 TOT Data 42 TOT Analysis Unit 43 Date / Time Information 44 Date / Time Information Storage Unit 45 RTC (Real Time Clock) Unit 46 Date / Time Information OSD Screen Generation Section 47 Date and time information OSD screen 50 TV program screen output example 51 Date and time information presentation screen output example 52 Date and time information message

Claims (4)

Digital broadcast reception recording for receiving a digital broadcast program comprising video data, audio data, and a data broadcast portion, outputting video and audio of a transport stream of the digital broadcast program, and recording and reproducing the transport stream on a recording medium A playback device,
A date and time information analysis processing unit for analyzing and processing the date and time information included in a transport stream at the time of viewing a television program currently being broadcast or a recorded program from the recording medium;
A video output synthesizing unit that synthesizes the date / time information in the TV program or recorded program being viewed, obtained by the date / time information analysis processing unit, the video data of the transport stream, and the data broadcast part of the transport stream; Have
A digital broadcast receiving / recording / reproducing apparatus characterized in that, when displaying the data broadcast portion, date and time information respectively corresponding to a television program or a recorded program being viewed is superimposed on the video data and output as a video. A television program of video data and audio data, a digital broadcast program composed of a data broadcast portion attached to the television program is received, a transport stream of the received digital broadcast program is recorded on a recording medium and reproduced, and the transport A digital broadcast receiving / recording / reproducing apparatus for outputting video and audio of a stream,
A transport stream from a tuner at the time of viewing a television program currently being broadcast or a transport stream at the time of viewing a recorded program from the recording medium is input, and a video processing unit, an audio processing unit, a data broadcast processing unit, and the A date and time information analysis processing unit for analyzing and processing date and time information included in the transport stream, each having a data separation unit for separating and outputting data;
Video output for synthesizing the date / time information in the TV program or recorded program being viewed and obtained by the date / time information analysis processing unit, the video data from the video processing unit, and the data broadcast part from the data broadcast processing unit Having a synthesis part,
Digital broadcast reception recording / reproduction characterized in that, when there is an instruction to display the data broadcast part through the operation unit, date information corresponding to the TV program or recorded program being viewed is superimposed on the video data and output as a video apparatus. In claim 1 or 2,
The date and time information analysis processing unit analyzes a time and date offset table (TOT data) included in the transport stream and obtains date and time information; and date and time when the obtained date and time information is updated and the latest value is held Information storage means,
A digital broadcast receiving / recording / reproducing apparatus, wherein the date / time information held in the date / time information storage means is superimposed on the video data and outputted. In claim 1 or 2,
The date and time information analysis processing unit analyzes a time and date offset table (TOT data) included in the transport stream and obtains date and time information; and date and time when the obtained date and time information is updated and the latest value is held An information storage means, and a time measuring means for performing a time measuring process with its own clock,
When the difference between the date and time information held in the date and time information storage means and the date and time information obtained from the time measuring means becomes equal to or larger than a predetermined set value, the date and time information held in the date and time information storage means Load the time measuring means and correct the date and time information of the time measuring means,
A digital broadcast receiving / recording / reproducing apparatus, characterized in that the corrected date and time information is superimposed on the video data and output as a video.

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