JP2005130077A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television receiver by which the video images of commercial messages can surely reach the viewers. <P>SOLUTION: The television receiver is provided with a CM-detecting means 9 for detecting portions equivalent to commercial messages from the contents of currently broadcasted video and audio signals received by a tuner 3, and outputting a detection result, consisting of a time information or positional information. A display control means 14 for generating data, such as a menu screen and a display control circuit 7 for reducing the video signals or adjusting a layout are controlled so that the menu screen or a help screen to be displayed by the direction of a remote controller 10 can be prevented from overlapping on the commercial message video image, depending on the detected result. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a television receiver having an on-screen display circuit.

In recent years, many television receivers have an on-screen display circuit. For example, information by remote control operation is displayed as a menu screen. When the menu screen is displayed, the original television image is obscured by the menu screen, so that the location can be moved (see, for example, Patent Document 1).
JP-A-8-186774 (page 3)

  However, in the configuration as described above, there is a possibility that the screen that the viewer wants to show to the viewer will not be able to see the screen that the television video is transmitted to, especially for the broadcasting station that is managed by commercial revenue, the commercial screen Concealing is not preferable because it leads to a decrease in commercial revenue or commercial price.

  In view of the above problems, the present invention provides a television receiver in which a commercial screen is always displayed as intended by a television image sender.

  In order to solve this problem, a television receiver according to the present invention receives a television signal, demodulates a video signal and an audio signal, and detects a commercial video based on at least one of the video signal and the audio signal. Based on the detection means, the data generation means for generating the data to be displayed on the screen by the user's operation, and the detection result by the detection means, the data to be displayed on the screen is displayed so as not to overlap the commercial video. And an on-screen display means configured as described above.

  As described above, according to the present invention, when a commercial video is detected and the commercial video is broadcasted, on-screen display is performed avoiding the video, so that the commercial video can be reliably viewed without being obscured. Effect that can be shown to the person.

  The invention according to claim 1 of the present invention is a demodulator that receives a television signal and demodulates a video signal and an audio signal, and a detector that detects a commercial video based on at least one of the video signal and the audio signal. The data generation means for generating the data to be displayed on the screen by the user's operation and the data to be displayed on the screen are displayed based on the detection result by the detection means so as not to overlap the commercial video. And an on-screen display means configured as described above. Thus, in any case, the commercial video is surely displayed on the screen to the viewer.

  According to a second aspect of the present invention, in the first aspect of the invention, the video signal includes data indicating an attribute of the signal, and the detection unit detects a commercial video based on the attribute. It is characterized by that. Accordingly, it is possible to surely grasp whether or not the screen being displayed is a commercial video and which part is a commercial video.

  According to a third aspect of the present invention, in the invention according to the first aspect, the on-screen display means reduces the video signal demodulated by the demodulation means and displays it on the screen. The data generated by the data generation means is displayed at the new location. Thus, even when the entire screen is a commercial video, the menu screen and the help screen can be reliably displayed without overlapping the commercial video.

  The invention according to claim 4 is the invention according to claim 1, wherein the television signal has attribute information indicating a predetermined attribute for at least one of the video signal and the audio signal, and the detection means. Detects a commercial video based on the attribute information. Thereby, it has the effect | action that the period when the commercial image | video is displayed can be grasped | ascertained more correctly.

  The invention according to claim 5 is the invention according to claim 4, wherein the attribute information does not have information indicating the presence / absence of a commercial video, but has information on a display position when the commercial video is displayed. It is characterized by. As a result, the period during which the commercial video is displayed cannot be easily analogized, and the place where the commercial video is to be displayed can be removed after the commercial is removed and the recording is not easily performed. It has an effect of displaying a menu screen while avoiding in advance.

  The invention according to claim 6 is the invention according to claim 4, characterized in that the attribute information is true when it is at least a commercial video, and can be true even when it is not a commercial video. To do. This has the effect that it is virtually impossible to perform recording by removing only commercial video.

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

(Embodiment)
FIG. 1 is a block diagram showing a configuration of a television receiver according to an embodiment of the present invention. Referring to this figure, when a viewer operates a remote controller (hereinafter referred to as a remote controller) 10, a remote control receiving circuit 11 detects operation information of the remote controller 10 and sends it to the CPU circuit 12. The CPU circuit 12 performs processing suitable for the data and program recorded in the memory 16 and the operation of the remote controller 10. For example, if the remote control operation is channel selection, the CPU circuit 12 gives an instruction to the tuner 3 to extract the signal of the corresponding channel from the antenna 2 and detect it.

  If the remote control operation is sound quality selection, the CPU circuit 12 prepares various menus related to sound quality selection in the menu setting means 13 from a program (not shown) therein. Next, the display control means 14 arranges how to display the menu.

  On the other hand, the commercial detection means (CM detection means) 9 is based on the output of the tuner 3, the output of the audio demodulator 4 that demodulates the audio signal from the tuner 3, and the output of the YC demodulator 5 that demodulates the video signal from the tuner 3. It is checked whether or not the video to be output is a commercial. If it is a commercial, the fact is output as a CM flag. Here, the CM flag is output to the CPU circuit 12 and processed by the display control means 14 under the control of the CPU circuit 12. The output of the audio demodulator 4 is output after the sound quality and volume are adjusted by the audio output circuit 6, and the output of the YC demodulator 5 is output by the video output circuit 8 via the display control circuit 7 described later. Output after adjustment.

  The components 3 to 9 and 11 to 16 are included in the television receiver 1, the tuner 3, the audio demodulator 4 and the YC demodulator 5 correspond to the demodulating means, and the commercial detecting means serves as the detecting means. The CPU circuit 12, the menu setting means 13, the display control means 14, and the memory 16 correspond to the data generation means, and the display control circuit 7 and the on-screen display circuit 15 correspond to the on-screen display means. To do.

  If the current video received by the tuner 3 is not commercial, an image to be displayed is created by the on-screen display circuit 15 and is superimposed on the video signal output from the YC demodulator 5 by the display control circuit 7. A menu screen is displayed at an appropriate predetermined place.

  Conversely, when the current video is commercial, the CM flag is given to the display control circuit 7 via the on-screen display circuit 15, and the following processing is performed.

  When the entire screen as shown in FIG. 2A is a commercial image, the entire commercial screen is reduced, and a menu screen is displayed at a blank space. In the example shown in FIG. 2 (B), the commercial video is reduced and shifted to the lower left, thereby displaying the menu screens 21 and 22 on the empty upper and right ends.

  By doing so, it is possible to prevent the commercial video from being covered by the menu screen, and it is possible to reliably convey the commercial message to the viewer.

  In the above example, the screen is reduced while maintaining the aspect ratio of the commercial image. For example, as shown in FIG. 2C, only the horizontal direction of the commercial video is reduced to create an empty space. Then, the menu screen 22 may be displayed at that portion.

  FIG. 3 is a display example of a menu screen when a commercial video is displayed at a part of the screen, here the lower part of the screen. At this time, the menu screen 31 is displayed at the place where the program video of the screen information is displayed. In FIG. 3 (B), it is displayed in the upper left corner of the screen. However, it may be in any place as long as it avoids commercial video, and further, if it is a place where program video is displayed, The place where the menu screen 31 is displayed may be moved by an operation.

  FIG. 4 is a display example of a menu screen when a commercial video is displayed on a part of the screen, here the right side of the screen. At this time, the menu screen 41 is displayed at the place where the program image of the screen information is displayed. In FIG. 4B, the image is displayed at a position slightly above and to the left of the upper center of the screen. However, as in FIG.

  The display of the commercial video as shown in FIGS. 3 and 4 is often used when it is not necessary to interrupt the program so much like a sports program.

  Here, as the commercial detection means 9, for example, in the case of the current analog broadcasting, whether or not the broadcasting is a stereo broadcasting while referring to whether the volume level is higher than usual by checking the frequency modulation degree of the audio carrier. Should be examined. Further, if the content of the audio signal is examined as to whether or not it is music, it can be recognized that the commercial is with considerable accuracy. Whether or not the content of the audio signal is music can be regarded as music if the spectrum is examined and a line spectrum with a remarkable level can be detected. In particular, many line spectra are detected in the high sound range. On the other hand, in the case of an audience cheer, etc., the spectrum distribution is white. As a result, it can be recognized that the commercial is quite accurate.

  Alternatively, it may be determined by superimposing a sign signal indicating a commercial or a shape on the vertical blanking of the video signal, and extracting the signal.

  In the case of terrestrial digital broadcasting, since the attribute is added to the video signal, it may be used. Alternatively, information indicating a commercial and what kind of commercial it is may be newly added and the information may be extracted.

  On the other hand, when a sign signal indicating that the currently broadcast program is commercial is superimposed, this signal is detected, and when the signal is superimposed, the video recording is interrupted. There is a case. For this reason, as a sign signal, it is not an identification signal indicating that a commercial is being broadcast, but if a commercial is broadcast (or whether it is a commercial or not), where the commercial video is displayed It is preferable to superimpose only the display position information indicating.

  This makes it possible to easily determine where or how the menu screen should be displayed when displaying the menu screen, and at the same time avoid using it for the commercial cut function.

  Furthermore, an identification signal that is always true during commercial broadcasting may be superimposed on the television signal, but the identification signal that is randomly true outside commercial broadcasting may be superimposed. By doing in this way, since the important program itself is cut at random when trying to perform a commercial cut using this beacon signal, the commercial cut using this signal is virtually impossible. However, on the contrary, if this sign signal is used, and at least when this signal is true, it is determined that the commercial video is displayed, and the display position and display method of the menu screen are controlled, so that the commercial video is surely displayed. Can be prevented from being obscured by the menu screen.

  In addition, the commercial video may be more accurately grasped by accessing a site in which a database of what kind of commercial video will be broadcast using an image processing technology or a network.

  In the above embodiment, the case where the menu screen is displayed by the operation of the remote controller 10 has been described. However, for example, a help screen indicating how to handle the television receiver is displayed. The same processing may be performed. In short, the present invention can be applied to all cases where a screen unintended by the broadcasting station is displayed on the television receiver by a remote controller or the like.

  In addition, broadcast waves (or transmission signals) that can be used for the television receiver in the above embodiment are generated by a transmitter. At that time, the transmitter indicates at least means for adding a signal that can be identified as commercial video, means for always adding an identification signal for commercial video, and optional addition otherwise, or indicates the insertion position of the commercial video Means for adding a signal and the like are included.

  Since the television receiver according to the present invention detects the commercial part and does not hide the screen, it can reliably convey the commercial to the person watching the screen, for example, using a personal computer or the like. It can also be used for applications such as providing video content with commercials.

The block diagram which shows the structure of the television receiver by embodiment of this invention Conceptual diagram showing an example of screen display of the television receiver Conceptual diagram showing another example of screen display on the television receiver Conceptual diagram showing another example of screen display on the television receiver

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Television receiver 2 Antenna 3 Tuner 7 Display control circuit 9 Commercial detection means 12 CPU circuit 13 Menu setting means 14 Display control means 15 On-screen display circuit

Claims (6)

Demodulation means for receiving a television signal and demodulating a video signal and an audio signal;
Detecting means for detecting a commercial video based on at least one of the video signal or the audio signal;
Data generating means for generating data to be displayed on the screen by the user's operation;
On-screen display means configured to display data to be displayed on the screen so as not to overlap the commercial video based on the detection result by the detection means;
A television receiver characterized by comprising: 2. The television receiver according to claim 1, wherein the video signal includes data indicating an attribute of the signal, and the detection unit detects a commercial video based on the attribute. The on-screen display means reduces the video signal demodulated by the demodulation means and displays it on the screen, and displays the data generated by the data generation means in a place that has become blank by the reduction operation. The television receiver according to claim 1, wherein the television receiver is a television receiver. 2. The television signal has attribute information indicating a predetermined attribute with respect to at least one of the video signal and the audio signal, and the detection unit detects a commercial video based on the attribute information. The described television receiver. 5. The television receiver according to claim 4, wherein the attribute information does not have information indicating the presence / absence of a commercial video but has information on a display position when the commercial video is displayed. 5. The television receiver according to claim 4, wherein the attribute information is true when it is at least a commercial video and can be true even when it is not a commercial video.

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