JP2011147040A - Broadcast redistribution apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase the number of viewers wherein even when video broadcasted in conformity to a second broadcasting standard can not be received under an environment that video is being broadcasted in conformity to the first and second broadcasting standards, video broadcasted in conformity to the first broadcasting standard can be received and viewed with a television capable of receiving video signals broadcasted in conformity to the second broadcasting standard. <P>SOLUTION: There is provided a broadcast redistribution apparatus capable of receiving video broadcasted in conformity to the first broadcasting standard, converting the picture quality of the video to that of the second broadcasting standard, and redistributing the video thus converted. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus for redistributing a television broadcast.

  In recent years, television broadcasting has performed a plurality of broadcasts with different broadcast standards.

  The broadcast standard combines high-quality but low-traffic broadcast (hereinafter referred to as “high-quality broadcast”) and low-quality but high-traffic broadcast (hereinafter referred to as “high-resistance broadcast”). There are standards for broadcasting. An example is the ISDB-T standard adopted by South American countries including Japan and Brazil. In the case of the ISDB-T standard, “high quality broadcasting” is 12 segments, and “highly resistant broadcasting” is 1 segment. Due to the widespread use of digital broadcasting, current installed televisions in Japan are configured to receive NTSC standard broadcasts or 12-segment digital broadcasts without providing a 1-segment reception facility. The reason why the installation type television receives 12-segment broadcasting is that it is easy to prepare a good reception environment. Further, when it is difficult to prepare a good reception environment such as a mobile device, only one segment is received.

  In recent years, with the widespread use of digital broadcasting, it is possible that difficult viewing areas may occur, so a test introduction of a gap filler system has started. The broadcast redistribution apparatus installed at the relay base constituting this gap filler system receives the broadcast signal made by the first broadcast standard, filters the noise, and makes it by the first broadcast standard of the transmission source. The broadcast signal is reproduced and redistributed. In other words, such a gap filler system can be replayed without changing the broadcast standard, with “high-definition broadcast” remaining as “high-definition broadcast” and “high-resistance broadcast” as “high-resistance broadcast”. It is a broadcast redistribution device for distribution. An example of such a broadcast redistribution apparatus is disclosed in Patent Literature 1 and Patent Literature 2.

JP2009-060284 JP2009-094958

  In the redistribution system, when the broadcast of the first broadcast standard cannot be received, the broadcast of the first broadcast standard cannot be redistributed, and the broadcast of the second broadcast standard is received and redistributed. Users of stationary televisions that cannot receive broadcasts of the second broadcast standard cannot view.

  In addition, when the broadcast of the first broadcast standard has low traffic resistance, redistribution by the conventional technology is not necessarily possible depending on the difficult viewing area.

  This problem will be further explained by taking ISDB-T digital terrestrial broadcasting adopted in Japan and South America as an example. In ISDB-T digital terrestrial broadcasting, there are “high-quality broadcast” broadcast standards and “high-resistance broadcast” broadcast standards, but they are completely different. For example, 12-segment (12-segment) broadcasting, which is a high-quality image in ISDB-T, uses a coding method called MPEG2, whereas one-segment (1-segment) broadcasting, which is an image that is easy to receive. Uses a coding method called H.264. In addition, the resolution and frame rate of each video are different. Therefore, the one-segment broadcasting cannot be viewed on the installation type television for receiving the 12-segment broadcasting.

  Therefore, the present inventors considered that if the broadcast of the second broadcast standard can be received, it is possible to easily increase the number of viewers and expand the viewable area.

  In the case of ISDB-T digital terrestrial broadcasting, if it is possible to view one-segment broadcasting on a 12-segment TV (installed television) in a difficult viewing area where 12-segment reception sensitivity is poor, viewing is possible. I thought it would be easy to increase the number of viewers and expand the viewable area.

  In addition, the broadcasting standard mainly for North America, "ATSC" for stationary TV and "ATSC-M / H" for mobile terminals, and the broadcasting standard mainly for Europe, "DVB-T" for stationary TV. "DVB-H" and "DVB-SH" for mobile terminals exist. These also have different serviceable service areas and different specifications. Therefore, TVs manufactured for specific broadcast standards (including the TV functions of information terminals) cannot be used for broadcasts distributed in other broadcast standards. Cannot watch.

  An object of the present invention is to provide a redistribution device that can increase the number of viewers of a broadcast.

  The present application includes a plurality of means for achieving the above object, and typical means are described in the claims.

  According to the broadcast redistribution apparatus of the present invention, the number of broadcast viewers can be increased.

It is explanatory drawing showing a 1st Example. It is explanatory drawing showing a 1st Example. It is explanatory drawing showing a 1st Example. It is explanatory drawing showing a 1st Example. It is explanatory drawing showing a 1st Example. It is explanatory drawing showing a 2nd Example. It is explanatory drawing showing a 2nd Example. It is explanatory drawing showing a 2nd Example. It is explanatory drawing showing a 2nd Example. It is explanatory drawing showing a 3rd Example. It is explanatory drawing showing a 3rd Example. It is explanatory drawing showing a 4th Example. It is explanatory drawing showing a 4th Example. It is explanatory drawing showing a 5th Example.

  In the following, the embodiment mainly describes the case of the ISDB-T standard as a broadcast standard, but it can also be applied to the other broadcast standards described above.

  In the ISDB-T standard, the first broadcast standard that is “highly resistant broadcast” is “1 (one) seg broadcast”, and the second broadcast standard that is “high quality broadcast” is “12 seg broadcast”.

  FIG. 1 shows a redistribution apparatus according to the first embodiment. The input signal (101) is a one-segment broadcasting signal received by an external antenna or the like. The signal receiving unit (102) receives the one-segment broadcasting signal, temporarily holds it in the buffer, and then outputs it to the image quality converting unit (103).

  The image quality conversion unit (103) performs signal processing on the input one-segment broadcasting signal to convert the image quality of the video. In this embodiment, video frame rate conversion and resolution conversion are performed. In this embodiment, the frame rate conversion is changed from 15 [Hz] to 30 [Hz], and the resolution conversion is performed to any one of a plurality of resolutions defined by the “1 segment” and “12 segment” standards. .

  In other words, when terrestrial digital broadcasting is performed according to the ISDB-T standard, the “1 segment” standard for terrestrial digital broadcasting for mobile TV is changed to “12 segment” for terrestrial digital broadcasting for another installation type television. Convert to standard.

The converted video signal is input to the signal redistribution unit (104) and redistributed (output signal).
In this way, the signal receiving unit that receives the video signal of the first broadcast standard, the image quality conversion unit that converts the image quality of the video signal of the first broadcast standard and conforms to the second broadcast standard, and the conversion If a re-distribution device including a signal re-distribution unit that re-distributes the video signal that has been re-distributed is installed at the relay station, the one-segment broadcasting can be viewed on the stationary television, so that the number of viewers of the one-segment broadcasting can be increased. In addition, if 12-segment broadcasting cannot be received but one-segment broadcasting can be received, it is possible to reduce difficult viewing areas where neither 12-segment broadcasting nor one-segment broadcasting can be received.

  FIG. 2 is a diagram showing a specific example of the image quality conversion unit (103).

  The input signal (201) is input to the video signal decoding unit (202). The video signal decoding unit (202) performs a decoding process on the encoded video. Since one-segment broadcasting is a video encoded in the H.264 format, the H.264 data is decoded.

Next, the decoded video is input to the frame rate conversion unit (203). As described above, in the case of one-segment broadcasting, the frame rate is 15 [Hz], whereas in the case of 12-segment broadcasting, it is 30 [Hz]. The frame rate conversion unit (203) converts the video so as to fill such a difference in frame rate. This conversion uses FRC interpolation technology that detects the motion information of a video and interpolates a newly generated frame between actual frames based on that information, thereby converting the frame rate. Here, another method may be used as long as the frame rate can be converted. In this way, an image whose frame rate is converted is generated.
The resolution converter (204) converts the video so as to fill such a difference in resolution. For the conversion to increase the resolution, a video enlargement method using a conventionally used enlargement filter may be used. In addition, another method may be used here as long as the resolution can be converted, and an image with improved image quality can be generated by using a so-called “super-resolution technique”. In this way, an image whose resolution is converted is generated.
The video generated by the resolution converter (204) is input to the video signal encoder (205). The video signal encoding unit (205) encodes the video signal. For example, in order to encode into the MPEG2 format, an encoding process is performed according to a predetermined flow. At this time, it is necessary to adjust the data size in accordance with the bandwidth that can be input to the installation television. A bit rate control method may be used for this adjustment. Specifically, the video signal encoding unit (205) is configured as shown in FIG. 3, the encoding bit rate control unit (302) generates bit rate information for bit rate control, and the generated bit rate information is used. This can be realized by encoding the video signal in the video signal encoding unit (303).

FIG. 4 shows broadcast redistribution processing in the present embodiment. First, a video signal reception process (401) is performed, and a received video signal decode process (402) is performed. After the decoded video signal is subjected to frame rate conversion processing (403), resolution conversion processing (404) is performed. Next, after generating the bit rate control signal for encoding (405) for the video signal subjected to the resolution conversion process (404), the video signal encoding process (406) is performed based on this control signal. By performing the video signal redistribution process (407), the broadcast redistribution process in this embodiment is completed.

  FIG. 5 shows an example of a system configuration when the broadcast redistribution apparatus of the present embodiment is actually used. The input signal (501) assumes a case where video is distributed by radio waves, as in general television broadcasting. This signal is received by the signal receiving unit (502), the image quality is converted by the image quality converting unit (503), and then redistributed (505) as radio waves by the signal redistributing unit (504). After the redistributed signal is received by the television antenna (506) in a general home environment, it is displayed as an image on the installation television (507) and viewed by the user. Here, although the input signal (501) is assumed to be a radio wave, even an image input in another form such as the Internet can be redistributed using the same device. In addition, although the redistribution (505) assumes radio waves, it can be directly input to the video display device (507) by wire.

  Here, an example of the ISDB-T standard has been described, but the above method and apparatus can be similarly used in other standards as well.

  In this example, the case where the one-segment broadcast is converted into a 12-segment broadcast signal has been described. However, the same method can be used when converting the one-segment broadcast into an analog broadcast signal such as an NTSC signal. . In this case, the frame rate conversion unit (203) may convert the signal to 30 [Hz], the resolution conversion unit (204) may convert the signal to a predetermined resolution such as horizontal 720 pixels and vertical 480 pixels, and the video signal. The encoding unit (205) may convert to an NTSC signal using an NTSC signal converter. The same method and apparatus can be used for conversion to other signals.

  In this embodiment, the resolution conversion unit (204) is provided after the frame rate conversion unit (203). However, this order may be reversed, or only one of them may be provided.

  In this way, the signal receiving unit that receives the video signal of the first broadcast standard, the image quality conversion unit that converts the image quality of the video signal of the first broadcast standard and conforms to the second broadcast standard, and the conversion If a re-distribution device including a signal re-distribution unit that re-distributes the received video signal is installed in the relay station, it is possible to view on a television that conforms to the second broadcast standard. Can increase the number of viewers. In particular, since it is possible to view one-seg broadcasting in a difficult viewing area where the second broadcast standard cannot be received, it is possible to reduce the difficult viewing area.

  Next, a broadcast redistribution apparatus according to Embodiment 2 of the present invention will be described.

  In the second embodiment, a case will be described in which only a certain frequency band can be used for distribution because, for example, it is used for another broadcast during the broadcast redistribution in the first embodiment.

  FIG. 6 shows a broadcast redistribution apparatus according to Embodiment 2 of the present invention.

  The input video (601) is input to the signal receiver (602). The signal receiving unit (602) receives a signal necessary for processing.

  Next, the received signal is input to the image quality conversion unit (603). The image quality conversion unit (603) converts the input video into a format that can be input to a general TV input terminal by performing image quality conversion processing such as frame rate conversion and resolution conversion and video encoding format conversion. . At this time, an image quality conversion method is determined according to frequency band information that can be used for redistribution.

  The video signal whose image quality has been converted is input to the signal redistribution unit (604). The signal redistribution unit (604) performs signal redistribution.

  FIG. 7 is a diagram showing a specific example of the image quality conversion unit (603).

  The input signal (701) is input to the video signal decoding unit (702). The video signal decoding unit (702) decodes the encoded video.

  On the other hand, usable bandwidth information (707), which is information indicating how many frequency bands are usable, is input to the conversion method determining unit (708). At this time, the available bandwidth information (707) may be set to a fixed value from the outside, or information may be automatically obtained using a device capable of examining the bandwidth information. The conversion method determination unit (708) determines the image quality conversion method in the frame rate conversion unit (703) and the resolution conversion unit (704) based on the available bandwidth information (707), and information on the determined image quality conversion method is obtained. Output.

  As an example of the image quality conversion method, a method is conceivable in which an available bandwidth is obtained from the available bandwidth information (707), and then a frame rate conversion amount and a resolution conversion amount are determined based on the available bandwidth. For this, by using a table as shown in FIG. 8, the frame rate conversion amount and the resolution conversion amount can be determined, and these are output as information on the image quality conversion method.

  Next, the video decoded by the video signal decoding unit (702) and the information on the image quality conversion method determined by the conversion method determination unit (708) are input to the frame rate conversion unit (703). The frame rate conversion unit (703) converts the frame rate based on the given image quality conversion method information. For this conversion, the same method as in the first embodiment may be used.

  The video generated by the frame rate conversion unit (703) is input to the resolution conversion unit (704). The resolution conversion unit (704) converts the video based on the given image quality conversion method information. For this conversion, the same method as in the first embodiment may be used.

  The video generated by the resolution conversion unit (704) is input to the video signal encoding unit (705). The video signal encoding unit (705) encodes the video signal in the same manner as in the first embodiment. At this time, the data size is adjusted according to the available bandwidth. For this adjustment, a conventional bit rate control method may be used.

  Here, the reason for reducing the frame rate and resolution as the bandwidth is narrow as shown in FIG. 8 is that the amount of data to be distributed is reduced, and therefore the amount of data finally encoded by the video signal encoding unit (705) is small. This is because video can be distributed in a narrow band.

  The video redistributed in this way may not be in a format that can be input to a general television input terminal depending on the state of the available bandwidth. In this case, as shown in FIG. 9, a new broadcast redistribution device (907) is added in a place where the available bandwidth is wide, such as immediately before the input terminal of the television, and a general television is obtained using the added device. Convert to a format that can be input to the input terminal and redistribute.

  With the above configuration, when a wide bandwidth can be used, the frame rate becomes high and the resolution increases, so that a video with high image quality can be distributed. On the other hand, when only a narrow bandwidth can be used, the amount of video data can be reduced and redistributed by suppressing the image quality improvement amount. As a result, the image quality can be converted and redistributed as much as possible.

  Here, an example of the ISDB-T standard has been described, but the method and apparatus of the present invention can be used in other standards as well.

  In this example, the case where the one-segment broadcasting is converted into a full-segment broadcasting signal has been described. However, depending on the available bandwidth, it may be converted into an NTSC signal and redistributed.

  In this embodiment, the resolution conversion unit (704) is provided after the frame rate conversion unit (703), but this order may be reversed.

  According to the broadcast redistribution apparatus according to the second embodiment described above, the image quality conversion process is performed according to the state of the band in which the input video such as the one-segment broadcasting can be used, and the video is input to a television like a full segment video. Can be converted to video.

  The third embodiment describes a method of outputting two or more types of signals to be redistributed when a wide band is available at the time of broadcast redistribution in the first embodiment.

  FIG. 10 shows a broadcast redistribution apparatus according to Embodiment 3 of the present invention.

  The input video (1001) is input to the signal receiving unit (1002). The signal receiving unit (1002) receives a signal necessary for processing.

  Next, the received signal is input to the image quality conversion unit (1003). The image quality conversion unit (1003) converts the input video into a format that can be input to a general TV input terminal by performing image quality conversion processing such as frame rate conversion and resolution conversion and video encoding format conversion. . In this case, if there are two types of signals to be redistributed, the image quality improvement processing such as frame rate conversion and resolution conversion, and the conversion of the video encoding format are the image quality improvement processing required for each type of signal to be redistributed and Perform the conversion process.

  The converted video signal is input to the signal redistribution unit (1004). The signal redistribution unit (1004) redistributes the signal.

  FIG. 11 is a diagram showing a specific example of the image quality conversion unit (1003). Here, a method for redistributing two types of video will be described.

  The input signal (1101) is input to the video signal decoding unit (1102). The video signal decoding unit (1102) performs a decoding process on the encoded video.

  Next, the video decoded by the video signal decoding unit (1102) is input to both the frame rate conversion unit 1 (1103) and the frame rate conversion unit 2 (1107). The frame rate conversion unit 1 (1103) and the frame rate conversion unit 2 (1107) each convert the video to a necessary frame rate. For this conversion, the same method as in the first embodiment may be used.

  The videos generated by the frame rate conversion unit 1 (1103) and the frame rate conversion unit 2 (1107) are input to the resolution conversion unit 1 (1104) and the resolution conversion unit 2 (1108), respectively. The resolution conversion unit 1 (1104) and the resolution conversion unit 2 (1108) each convert the video to a necessary resolution. For this conversion, the same method as in the first embodiment may be used.

  The video generated by the resolution converter 1 (1104) and the resolution converter 2 (1108) is input to the video signal encoder 1 (1105) and the video signal encoder 2 (1109), respectively. The video signal encoding unit 1 (1105) and the video signal encoding unit 2 (1109) encode video signals in the same manner as in the first embodiment. At this time, the encoding method can be changed by the video signal encoding unit 1 (1105) and the video signal encoding unit 2 (1109). The output signal 1 (1106) and the output signal 2 (1110) may have different formats. For example, the output signal 1 (1106) is a digital broadcasting full-segment broadcasting format, and the output signal 2 (1110) is an analog broadcasting. It is also possible to adopt the NTSC signal system.

  In the present embodiment, an example in which there are two types of video to be retransmitted is shown, but it is also possible to redistribute three or more types of video in the same manner.

  Here, an example of the ISDB-T standard has been described, but the method and apparatus of the present invention can be used in other standards as well.

  In this embodiment, there is a resolution conversion unit after the frame rate conversion unit, but this order may be reversed.

  According to the broadcast redistribution apparatus according to the third embodiment described above, when a wide band is available when image quality conversion processing and redistribution of an input video such as one-segment broadcasting are performed, a signal to be redistributed is 2 It is possible to output more than types.

  In the fourth embodiment, the present invention is applied to a case where only a certain band can be used for distribution because the video is redistributed in the third embodiment and used for another broadcast. An example will be described.

  FIG. 12 shows a broadcast redistribution apparatus according to Embodiment 4 of the present invention.

  The input video (1201) is input to the signal receiver (1202). The signal receiving unit (1202) receives a signal necessary for processing.

  Next, the received signal is input to the image quality conversion unit (1203). The image quality conversion unit (1203) converts the input video into a format that can be input to a general TV input terminal by performing image quality conversion processing such as frame rate conversion and resolution conversion and video encoding format conversion. . In this case, if there are two types of signals to be redistributed, the image quality improvement processing such as frame rate conversion and resolution conversion, and the conversion of the video encoding format are the image quality improvement processing required for each type of signal to be redistributed and Perform the conversion process. Further, each image quality improvement processing method is determined according to the bandwidth information available for redistribution.

  The converted video signal is input to the signal redistribution unit (1204). The signal redistribution unit (1204) redistributes the signal.

  FIG. 13 is a diagram showing a specific example of the image quality conversion unit (1203). Here, a method for redistributing two types of video will be described.

  The usable bandwidth information (1311) is input to the conversion method determination unit (1312). Based on the available bandwidth information (1311), the conversion method determination unit (1312) determines two types of video image quality conversion methods and outputs the information. At this time, the available bandwidth is divided according to the ratio of the data size of the two types of video, and the image quality conversion method is changed using the table shown in the example of FIG. 8 so that the two types of video fit in the divided bandwidth. decide. For example, if the data size ratio is 2: 1 and the available bandwidth is 6M [Hz], the bandwidth is divided into 4M [Hz] and 2M [Hz] areas, and the example shown in FIG. The image quality conversion method is determined using the table shown in FIG.

  Information on the image quality conversion method determined in this way is sent to the frame rate conversion unit 1 (1303) and the frame rate conversion unit 2 (1307), the resolution conversion unit 1 (1104), and the resolution conversion unit 2 (1108), respectively. Input and processing is performed in each. Since the processing method is the same as in the second and third embodiments, the description thereof is omitted.

  In the present embodiment, an example in which there are two types of video to be retransmitted is shown, but it is also possible to redistribute three or more types of video in the same manner.

  Here, an example of the ISDB-T standard has been described, but the method and apparatus of the present invention can be used in other standards as well.

  In this embodiment, there is a resolution conversion unit after the frame rate conversion unit, but this order may be reversed.

  According to the broadcast redistribution apparatus according to the fourth embodiment described above, image quality conversion processing is performed on the input video such as one-segment broadcasting, and redistribution is performed even when only a narrow band is available when the video is redistributed. Two or more types of signals can be output.

  In the fifth embodiment, an example in which the broadcast redistribution apparatus according to the present invention is used as a repeater will be described.

  FIG. 14 shows a usage example of the broadcast redistribution apparatus according to the fifth embodiment of the present invention. A video signal distributed from a signal distribution device such as a radio tower (1401) becomes a signal (1402) attenuated by the influence of a mountain or the like, and is received by a repeater (1403) using the present invention.

  Inside the repeater (1403), the signal reception unit (1404) performs signal reception processing, the image quality conversion unit (1405) performs image quality enhancement processing, and the signal redistribution unit (1406) performs video signal processing. Re-deliver.

  The redistributed signal (1407) is received by the antennas of a plurality of private houses (1408) and displayed on a video display device such as a television.

  According to the use example of the broadcast redistribution apparatus according to the fifth embodiment described above, even when the signal is attenuated due to the influence of a mountain or the like, a more suitable image can be obtained by redistributing after improving the image quality. Can be delivered.

DESCRIPTION OF SYMBOLS 101 ... Input signal 102 ... Signal receiving part 103 ... Image quality conversion part 104 ... Signal redistribution part 105 ... Output signal 201 ... Input signal 202 ... Video signal decoding part 203 ... Frame rate conversion part 204 ... Resolution conversion unit, 205 ... Video signal encoding unit, 206 ... Output signal, 301 ... Input signal, 302 ... Encoding bit rate control unit, 303 ... Video signal encoding unit, 304 ... Output signal, 401 ... Video signal reception processing, 402 ... Video signal decoding process, 403 ... Frame rate conversion process, 404 ... Resolution conversion process, 405 ... Bit rate control signal generation process for encoding, 406 ... Video signal encoding process, 407 ... Video signal redistribution process, 501 ... Input signal, 502 ... Signal reception unit, 503 ... Image quality conversion unit, 504 ... Signal redistribution unit, 505 ... Redistribution video, 506 ... Redistribution video reception unit, 507 ... Video display device, 601 ... Input signal, 602 ... Signal reception unit, 603 ... Image quality conversion unit, 604 ... Signal redistribution unit 605 ... Output signal, 701 ... Input signal, 702 ... Video signal decoder, 703 ... Frame rate converter, 704 ... Resolution converter, 705 ... Video signal encoder, 706 ... Output signal, 707 ... Available bandwidth information, 708 ... Conversion method determination unit, 901 ... Input signal, 902 ... Signal reception unit, 903 ... Image quality conversion unit, 904 ... Signal redistribution unit, 905 ... Redistribution signal, 906 ... TV, 907 ... Broadcast redistribution device, 1001 ... Input Signal, 1002 ... Signal reception unit, 1003 ... Image quality conversion unit, 1004 ... Signal redistribution unit, 1005 ... Output signal, 1101 ... Input signal, 1102 ... Video signal decoding unit, 1103 ... Frame rate conversion unit 1,1104 ... Resolution conversion 1, 1105 ... Video signal encoder 1, 1106 ... Output signal 1, 1107 ... Frame rate converter 2, 1108 ... Resolution converter 2, 1109 ... Video signal encoder 2, 1110 ... Output signal 2, 1201 ... Input signal 1202 ... Signal receiving unit, 1203 ... Image quality conversion unit, 1204 ... Signal redistribution unit, 1205 ... Output 1301 ... Input signal, 1302 ... Video signal decoder, 1303 ... Frame rate converter 1, 1304 ... Resolution converter 1,1305 ... Video signal encoder 1,1306 ... Output signal 1,1307 ... Frame rate converter 2 , 1308: Resolution converter 2, 1309 ... Video signal encoder 2, 1310 ... Output signal 2, 1311 ... Available bandwidth information, 1312 ... Conversion method decision unit, 1401 ... Radio tower, 1402 ... Video signal, 1403 ... Repeater , 1404 ... Signal receiving unit, 1405 ... Image quality conversion unit, 1406 ... Signal redistribution unit, 1407 ... Redistribution signal, 1408 ... General private house

Claims (6)

A broadcast redistribution device,
A signal receiver for receiving a video signal of the first broadcast standard;
An image quality conversion unit adapted to convert the image quality of the video signal of the first broadcast standard and conform to the second broadcast standard;
A broadcast redistribution device comprising: a signal redistribution unit that redistributes the converted video signal. In claim 1,
The image quality conversion unit
A video signal decoding unit for decoding the video signal of the first broadcasting standard;
A frame rate conversion unit that converts a decoded frame rate of the video signal of the first broadcast standard into a frame rate that conforms to the second broadcast standard;
A broadcast redistribution apparatus comprising: a video signal encoding unit that encodes a video signal with a converted frame rate according to an encoding standard conforming to the second broadcast standard. In claim 1,
The image quality conversion unit
A video signal decoding unit for decoding the video signal of the first broadcasting standard;
A resolution converter that converts the resolution of the decoded video signal of the first broadcast standard to a resolution that conforms to the second broadcast standard;
A broadcast redistribution device comprising: a video signal encoding unit that encodes a video signal whose resolution has been converted according to an encoding standard conforming to the second broadcast standard. In claim 1,
The broadcast redistribution device, wherein the image quality conversion unit converts a video signal in accordance with a frequency band that can be used among frequency bands conforming to the second broadcast standard. In claim 4,
A video signal decoding unit for decoding the video signal of the first broadcasting standard;
The image quality conversion unit converts the frame rate of the decoded video signal of the first broadcast standard according to a frequency band that can be used among frequency bands conforming to the second broadcast standard to the second broadcast standard. A frame rate conversion unit for converting the frame rate to a broadcast standard,
The image quality conversion unit converts the resolution of the decoded video signal of the first broadcast standard according to a frequency band that can be used among frequency bands conforming to the second broadcast standard to the second broadcast standard. A resolution changer that converts the resolution to a standard-compliant resolution;
A broadcast redistribution apparatus comprising: a video signal encoding unit that encodes a video signal whose resolution and frame rate have been converted using an encoding standard conforming to the second broadcast standard. In claim 1,
The image quality conversion unit converts the received video signal into two or more types of video signals,
The broadcast redistribution device, wherein the signal redistribution unit redistributes two or more types of converted video signals.

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