JP3548113B2 - Receiver and image reproducing method - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a receiving device such as a terminal device or a broadcast receiving device that receives a video signal and displays a video, and particularly to a digital broadcast receiving device that receives a broadcast signal that is a digital signal.
[0002]
[Prior art]
In recent years, digital technology has evolved, and digital broadcasting technology has been adopted in television broadcasting such as satellite broadcasting and cable television broadcasting for reasons such as stability in digital modulation and demodulation and multi-channel by establishing high efficiency coding, In terrestrial broadcasting and the like, it is receiving attention as a next-generation technology. The configuration of a digital broadcast receiving apparatus for receiving such a digital broadcast is represented as a block diagram in FIG.
[0003]
In the digital broadcast receiving apparatus shown in FIG. 4, the TS of the transponder, which is obtained by multiplexing the TS of a plurality of channels including the TS (Transport Stream) of the channel desired by the user from the digital broadcast signal received by the antenna 101, It is obtained by controlling the tuning operation of the tuner 102 by a CPU (Central Processing Unit) 106. When the logical channel information in the TS of the obtained transponder is selected by the TS separation unit 103 and given to the CPU 106, the CPU 106 determines the position of the section data serving as the standard information in the TS of the channel desired by the user. Is parsed.
[0004]
Then, based on the analyzed position of the section data, the CPU 106 controls the TS separation unit 103 so as to separate the TS of one transponder and obtain the section data in the TS of the channel desired by the user. When this section data is sent to the CPU 106, the position of the image data in the TS of the channel desired by the user is analyzed.
[0005]
Based on the analyzed position of the image data, the CPU 106 controls the TS separation unit 103 to separate the TS of the channel desired by the user and obtain the image data. When the image data separated by the TS separation unit 103 is sent to the decoder 104, the image data is decoded by the decoder 104, and then various image processing such as edge enhancement and image interpolation is performed in the image output device 105. Thereafter, the image is reproduced.
[0006]
[Problems to be solved by the invention]
Therefore, such a digital broadcast receiving apparatus is configured such that when the power is turned on or when the channel is switched, first, the tuner 101 determines the tuning with the transponder including the desired channel, and then the channel separated by the TS separating unit 103. When the information is provided to the CPU 106, the CPU 106 analyzes the position of the section data of the desired channel. Only when the section data is analyzed by the CPU 106 can image data included in the TS of a desired channel be obtained.
[0007]
At this time, it takes about 0.5 to 1 second to determine the tuning in the tuner 101, and it may take up to about 0.2 second until the image data is separated by the TS separation unit 103. Further, in the decoder 104, when the image data is separated by the TS separation unit 103 and transmitted, decoding is performed by the MPEG (Moving Picture Experts Group) method.
[0008]
In this MPEG system, three types of data, i.e., an I (Intra) picture, a P (Predictive) picture, and a B (Bidirectional) picture, are sent to the decoder 104 in the order shown in FIG. However, a P picture is a signal predicted by a past I picture or P picture (forward prediction), and a B picture is predicted by a past or future I picture and P picture (bidirectional prediction). Signal. Therefore, only I pictures are signals processed in frames, and P pictures and B pictures cannot be decoded by themselves. Therefore, the decoder 104 needs to wait until an I picture is given.
[0009]
Since the decoder 104 has a buffer therein, decoding is performed from a state in which data is accumulated to some extent in the buffer, and decoding is performed while managing buffer overflow and underflow. . As described above, the decoder 104 does not start the decoding operation immediately after receiving the image data from the TS separation unit 103.
[0010]
Therefore, it takes several seconds from when the user gives an instruction to turn on the power or switch the channel to when the video of the channel desired by the user is reproduced, and a time lag occurs. Conventionally, during the occurrence of the time lag, the output from the image output device 105 is set to a mute state in which no output is made. Further, at the time of channel switching, an image based on the last image data of the channel before switching is continuously reproduced until the channel switching operation is completed and the image data of the desired channel is reproduced. there were.
[0011]
Therefore, an object of the present invention is to provide a receiving apparatus capable of reproducing an effective image by utilizing a period of a time lag that occurs when power is turned on or a channel is switched.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, a receiving device of the present invention receives a video signal and, in a receiving device that reproduces a video, reproduces a predetermined image before display of the received video is started. .
[0013]
According to such a receiving device, for example, in order to reproduce a video such as a program desired by the user, for example, from the start of the receiving operation of the video signal to the time when the video is displayed, for example, advertisement or advertising is not performed. It is possible to display a logo mark or an image desired by the user.
[0014]
Further, the receiving device of the present invention is characterized in that a receiving device for receiving a video signal and reproducing a video reproduces a predetermined image in synchronization with a specific video.
[0015]
According to such a receiving device, for example, when operating as a broadcast receiving device for receiving a broadcast signal, when a commercial of a specific trader is detected, the latest advertisement image of the trader is reproduced as a predetermined image, and the viewer is played back. Can be watched.
[0016]
Also, the receiving apparatus of the present invention is characterized in that in a receiving apparatus for receiving a video signal and reproducing a video, a predetermined image is reproduced together with the specific video in synchronization with the specific video.
[0017]
According to such a receiving apparatus, for example, when operating as a broadcast receiving apparatus for receiving a broadcast signal, when a commercial of a specific trader is detected, a commercial video is reproduced together with the trader's logo mark to allow the viewer to view the commercial video. be able to.
[0018]
Further, when the receiving apparatus receives a broadcast signal, for example, a predetermined image is reproduced from a time when a channel switching is instructed and a channel selection operation is started to a time when a video of a desired channel is reproduced. Thus, for example, it is possible to display an advertisement, a logo display serving as an advertisement, or a user's favorite image.
[0019]
Also, the video signal is obtained by receiving a broadcast signal, the specific video is a commercial video for performing advertisement and advertisement of a predetermined trader, and the predetermined image is reproduced at a time when the commercial video is reproduced. May be reproduced.
[0020]
Further, the predetermined image may be an image obtained by receiving the image as a broadcast signal.
[0021]
Further, when the receiving apparatus is connected to a communication network, receives video information of a connection destination, and reproduces a received video, the predetermined image is reproduced when a content acquired through the communication network is switched. By doing so, for example, when switching between sites to be viewed on the Internet, it is possible to display advertisements, display logos serving as advertisements, and display images that the user likes.
[0022]
In addition, by causing the predetermined image to be reproduced when an instruction to acquire new information is issued via the communication network, for example, while downloading new information content, advertisement or advertisement may be performed. The logo display and the user's favorite image can be displayed.
[0023]
Further, the predetermined image may be an image obtained by receiving the predetermined image via the communication network.
[0024]
Also, when the power is turned on, the predetermined image is reproduced so that, for example, in the case of a receiving device for receiving a broadcast signal, a video signal of a desired channel is received and displayed, and a communication network is provided. In the case of a receiving apparatus that receives an image through a web site, it is possible to display an advertisement, a logo display serving as an advertisement, or a user's favorite image until the image of the desired site is downloaded and displayed.
[0025]
Further, the receiving apparatus of the present invention includes a tuner for receiving and selecting a broadcast signal which is a digital signal, a data separating unit for separating image data of a desired channel from the broadcast signal received by the tuner, and a data separating unit. A decoder for decoding the given image data, a memory for storing the image data of the predetermined image, and reading the image data of the predetermined image from the memory, and the image data from the decoder or the image of the predetermined image. An image superimposing section for outputting data, and an image output section for reproducing image data given from the image superimposing section, wherein when the tuner starts tuning of a desired channel, the image superimposing section stores the memory. And outputs the image data of the predetermined image to the image output unit, and sends the desired channel to the decoder by the data separation unit. Up image data is decoded given, after the predetermined image is reproduced by said image output unit, the image data of the desired channel from the decoder is applied to the image superimposing unit, the desired channel Video is reproduced by the image output unit, and when the video of the desired channel is being reproduced by the image output unit, specific image data is obtained from a broadcast signal received by the tuner in the decoder, When the specific image data is provided from the decoder to the image superimposing unit, the image data of the predetermined image is superimposed on the image data from the decoder in the image superimposing unit, and the video on which the predetermined image is superimposed is the image. It is characterized by being reproduced by the output unit .
[0026]
For example, when receiving a digital broadcast, such a receiving device selects a transponder TS in which a TS of a desired channel is multiplexed from a multiplexed TS of a plurality of channels by a tuner, From the TS, the image data of the desired channel is acquired by the data separation unit, and until the decoder decodes the image data, for example, it is possible to display an advertisement, a logo display serving as an advertisement, or a user's favorite image. Further, when it is detected that the image data of the commercial of a specific trader is separated by the data separation unit, for example, the commercial video is reproduced together with the logo mark of the trader, and can be viewed by the viewer.
[0031]
Further, the decoder may perform decoding according to a high efficiency coding method. Further, the high-efficiency coding method may be an MPEG method. Further, the digital broadcast signal may be a signal in which broadcast signals of a plurality of channels are multiplexed.
[0032]
In addition, by causing a predetermined image to be reproduced from the start of the channel selection operation when the channel switching is instructed and the reproduction of the video of the desired channel, for example, the display of a logo for advertising, An image desired by the user can be displayed.
[0033]
In addition, by allowing the predetermined image to be stored in advance, it is possible to immediately read out and reproduce and display the image.
[0034]
Also, by allowing the predetermined image to be reproduced from the time when the power is turned on and the channel selection operation is started to the time when the video of the desired channel is reproduced, for example, a logo display for advertising, advertisement, or user Can be displayed.
[0038]
In the above-described image reproducing method of the receiving apparatus, when a channel selection operation is performed, such as when a video signal is obtained from a broadcast signal, when a channel of a broadcast signal is instructed to be switched, advertisements and advertisements are performed. The logo display and the user's favorite image can be displayed. In addition, in synchronization with a commercial video of a predetermined trader, a predetermined image serving as the latest information and a logo mark of the predetermined trader can be reproduced.
[0039]
Also, in the above-described image reproducing method of the receiving apparatus, when a video signal of a homepage or the like is obtained through a communication network such as the Internet, when a page of a new site is downloaded, a logo that serves as an advertisement or advertisement is displayed. And the user's favorite image can be displayed.
[0040]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating an internal configuration of the digital broadcast receiving apparatus according to the present embodiment. FIG. 2 is a flowchart showing the operation of the digital broadcast receiving apparatus of FIG. 1 when the power is turned on or when the channel is switched.
[0041]
The digital broadcast receiving apparatus shown in FIG. 1 includes an antenna 1 that receives a digital broadcast signal, a tuner 2 that tunes a TS of a transponder including a TS of a desired channel from the digital broadcast signal received by the antenna 1, and a tuner 2. A TS separating unit 3 for separating the given TS to obtain image data and section data, a decoder 4 for decoding data transmitted from the TS separating unit 3, and selecting or selecting image data from the decoder 4 and the memory 6. An image superimposing device 5 for superimposing and outputting, a memory 6 for storing image data, an image output device 7 for performing image processing performed on image data output from the image superimposing device 5 and then reproducing the image, And a CPU 8 for controlling the operation.
[0042]
The digital broadcast receiving apparatus having such a configuration performs the operation shown in the flowchart of FIG. 2 when the power is turned on or the channel is switched. First, when the power is turned on, the video of the channel when the power is turned off is reproduced, and when the channel is switched, the video of the channel to be switched is reproduced. As with the digital broadcast signal, the tuner 2 is controlled by the CPU 8 from the digital broadcast signal received by the antenna 1 so that the TS of the transponder in which the TSs of a plurality of channels including the TS of the channel desired by the user are obtained. Is given a control command for performing a channel selection operation (STEP 1).
[0043]
As described above, when the control command is given to the tuner 2, the CPU 8 gives the control command to the image superposition device 5 to read out the image data stored in the memory 6 (STEP 2). The image data stored in the memory 6 may be stored in the memory 6 in advance, or the CPU 8 writes the image data obtained from the received broadcast signal into the memory 6 for the image superimposing device 5. May be stored.
[0044]
When the data is written to the memory 6, the stored image data is not limited to image data obtained from a broadcast signal, and may be, for example, image data obtained from the Internet. Further, the image reproduced by the image data read from the memory 6 in this manner may be an image for an advertisement or an advertisement, or may be an image desired by the user.
[0045]
Then, the CPU 8 determines whether or not the tuner 2 has fixed the tuning frequency so as to obtain the TS of the target transponder (STEP 3). At this time, if the tuning frequency is fixed (Yes), the CPU 8 gives a control command to the TS separation unit 3 so that the image data is separated from the TS of the desired channel (STEP 4). Conversely, when the tuning frequency is not fixed (No), the determination operation of STEP 3 is performed again.
[0046]
When the CPU 8 instructs the TS separation unit 3 to separate the image data in STEP 4, first, the TS separation unit 3 separates the logical channel information from the TS transmitted from the tuner 2 and supplies the logical channel information to the CPU 8. The logical channel information is analyzed by the CPU 8 to recognize the position of the TS of the desired channel in the TS of the transponder provided to the TS separation unit 3 and to detect the position of the section data in the TS of the desired channel.
[0047]
Then, the CPU 8 controls the TS separation unit 3 to separate the section data in the TS of the desired channel. When this section data is sent to the CPU 8 and analyzed, the position of the image data in the TS of the desired channel is recognized. Then, the CPU 8 controls the TS separation unit 3 to separate the image data in the TS of the desired channel and send the image data to the decoder 4.
[0048]
Then, the CPU 8 completes the operation of separating the image data given to the decoder 4, and determines whether or not the image data in the TS of the desired channel is output from the TS separation unit 3 (STEP 5). At this time, when the TS separation unit 3 is in a state of outputting image data (Yes), the CPU 8 controls the decoder 4 to start decoding image data separated and provided by the TS separation unit 3. An instruction is given (STEP 6). Conversely, when no image data is output from the TS separation unit 3 (No), the determination operation in STEP 5 is performed again.
[0049]
In step 6, when the CPU 8 instructs the decoder 4 to decode the image data, the decoder 4 performs the MPEG decoding. At this time, the decoder 4 searches for the I picture shown in FIG. In other words, decoding can be performed only after an I-picture that is a signal processed only in a frame is detected from among three types of signals, an I-picture, a P-picture, and a B-picture. This is because, as described above, the P picture and the B picture which are the predicted signals cannot be decoded by themselves.
[0050]
Then, the CPU 8 determines whether or not the signal indicating the I picture is supplied to the decoder 4 to start decoding the image data (STEP 7). At this time, when decoding of the image data in the decoder 4 is started (Yes), the CPU 8 instructs the image superimposing device 5 to output the image data decoded by the decoder 4 to the image output device 7. To give a control command (STEP 8). Conversely, when decoding of image data in the decoder 4 has not been started (No), the determination operation in STEP 7 is performed again.
[0051]
In STEP 8, when the image superimposing device 5 is instructed by the CPU 8 to output the image data from the decoder 4 to the image output device 7, the image superimposing device 5 stops reading the image data from the memory 6. Therefore, the image superimposing device 5 selects the image data of the desired channel provided from the decoder 4 and outputs the selected image data to the image output device 7. Then, the video of the desired channel is reproduced by the image output device 7.
[0052]
After the reproduction of the video of the desired channel is started in this way, the image superimposing device 5 instructs the CPU 8 to display image data such as an EPG (Electronic Program Guide) recorded in the memory 6 in advance. Then, the image data instructed to be read is read by the image superimposing device 5 from the memory 6, and then superimposed on the image data decoded by the decoder 4 and output to the image output device 7. In this way, the image output device 7 can reproduce an image such as an EPG while being superimposed on a video of a desired channel.
[0053]
Further, when the image data recorded in the memory 6 is a logo mark, the CPU 8 detects that a commercial of the company of the logo mark has been received from the data separated by the TS separation unit 3. Then, by superimposing the image data of the logo in the memory 6 on the image data of the commercial of the company of the logo by the image superimposing device 5, the logo represented by the image data in the memory 6 is output together with the commercial. Reproduced by the device 7.
[0054]
Further, when an image for the latest advertisement is recorded in the memory 6 together with the logo from various kinds of communication media such as broadcasting and the Internet, when the CPU 8 detects that a commercial of the company of the logo has been received, the memory 8 The image recorded in 6 is selected by the image superimposing device 5 and reproduced by the image output device 7, so that the user can view the latest advertisement image.
[0055]
As described above, when the power is turned on or when the channel is switched, the tuner 2 starts the channel selection operation and the image output device 7 reproduces the time lag generated from the time when the video of the desired channel is reproduced (see FIG. 2). During STEP2 to STEP8), an image based on the image data stored in the memory 6 is reproduced. Therefore, when this image is an image for advertisement or advertisement, it has an effect of advertisement for the user. In addition, when the user obtains image data through a communication medium such as various broadcasts or the Internet, the image can be set as a user's favorite image.
[0056]
Further, the image superimposing device 5 reads out the image data of a plurality of bitmap images in the memory 6 and superimposes the image data on the image data decoded by the decoder 4, and has an LSI (On Screen Display) function having an OSD (On Screen Display) function. By using Large Scale Integrated circuit, the image output device 7 can reproduce an image immediately after the tuner 2 starts the channel selection operation.
[0057]
Although omitted in the present embodiment, the TS separation section separates audio data together with video data. When the audio data is decoded by the decoder, the audio data is output in synchronization with the image data reproduced by the image output device, so that the video and the audio are output in synchronization. Further, the decoder performs decoding according to the MPEG system, but may use another high efficiency coding system.
[0058]
Furthermore, in the present embodiment, a broadcast receiving apparatus that receives a broadcast signal using a broadcast line has been described. However, the present invention is not limited to this broadcast receiving apparatus. For example, it is possible to acquire a video signal through a network line such as the Internet. The present invention is also applicable to a receiving apparatus that performs the processing. Such a receiving device may be a home appliance provided with a network terminal device, a mobile terminal device, or a personal computer for performing the Internet.
[0059]
Then, for example, in the case of a receiving device that is connected to a specific site when the power is turned on, first, after communication with a server having the specific site is established, the homepage of the specific site is downloaded, and the homepage of the specific site is downloaded. Image is displayed. In this way, while the connection to the server and the downloading of the homepage are performed, the logo mark of this specific site, the advertisement, or the image of the user's preference is displayed. Further, when the user switches the site to be viewed, a logo of a predetermined trader, an advertisement, or an image of the user's preference may be displayed before the homepage of the switched site is downloaded.
[0060]
【The invention's effect】
According to the present invention, for example, a predetermined image such as an advertisement or a logo display serving as an advertisement can be displayed while the video reproduction of the desired content is started after the content acquisition operation is started. Therefore, the advertisement effect can be given to the standby time until the reproduction of the video of the desired content is started. In addition, by setting the predetermined image as a user's favorite image, the user's favorite image can be viewed during the standby time.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the internal configuration of a digital broadcast receiving apparatus according to the present invention.
FIG. 2 is a flowchart showing the operation of the digital broadcast receiving apparatus of FIG. 1;
FIG. 3 is a diagram for explaining an MPEG system.
FIG. 4 is a block diagram showing an internal configuration of a conventional digital broadcast receiving device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Antenna 2 Tuner 3 TS separation part 4 Decoder 5 Image superposition device 6 Memory 7 Image output device 8 CPU

Claims (11)

A tuner that receives a digital broadcast signal and selects a station;
A data separation unit that separates image data of a desired channel from a broadcast signal received by the tuner,
A decoder for decoding the image data provided by the data separation unit;
A memory for storing image data of the predetermined image;
While reading the image data of the predetermined image from the memory, an image superimposing unit that outputs the image data or the image data of the predetermined image from the decoder,
An image output unit that reproduces image data provided from the image superimposition unit;
Has,
When the tuner starts channel selection of a desired channel, the image superimposing unit reads out image data of the predetermined image from the memory and supplies the image data to the image output unit, and the decoder separates the image of the desired channel from the data separation unit. Until data is provided and decoded, after the predetermined image is reproduced by the image output unit, if the image data of the desired channel is supplied to the image superimposing unit from the decoder , the video of the desired channel is reproduced. While being reproduced by the image output unit ,
When the video of the desired channel is being reproduced by the image output unit, specific image data is obtained from a broadcast signal received by the tuner in the decoder, and the specific image data is superimposed on the image by the decoder. The image data of the predetermined image is superimposed on the image data from the decoder in the image superimposing unit, and a video on which the predetermined image is superimposed is reproduced by the image output unit. apparatus. The receiving device according to claim 1 , wherein the predetermined image is an image including a logo of a predetermined trader. 3. The image data according to claim 1, wherein the specific image data is image data of a commercial video for performing advertisement and advertisement of a predetermined trader, and is image data related to the predetermined image. Receiver. The receiving device according to claim 1 , wherein the predetermined image is an image obtained by receiving the image as a broadcast signal. The receiving device according to any one of claims 1 to 4, wherein the receiving device is connected to a communication network, and the predetermined image is an image obtained by receiving the image via the communication network. The receiving device according to claim 1 , wherein the decoder performs decoding according to a high-efficiency coding method. 7. The receiving apparatus according to claim 6 , wherein the high-efficiency coding method is an MPEG method. The receiving device according to any one of claims 1 to 7 , wherein the broadcast signal is obtained by multiplexing broadcast signals of a plurality of channels. 9. The receiving device according to claim 1 , wherein the predetermined image is reproduced when a channel switching is instructed. The receiving device according to claim 1 , wherein the predetermined image is an image stored in advance. The receiving device according to claim 1 , wherein the predetermined image is reproduced when power is turned on.

Images