KR20130112351A - A transmission system for uhdtv broadcast and uhdtv multiplexer - Google Patents
A transmission system for uhdtv broadcast and uhdtv multiplexer Download PDFInfo
- Publication number
- KR20130112351A KR20130112351A KR1020120034651A KR20120034651A KR20130112351A KR 20130112351 A KR20130112351 A KR 20130112351A KR 1020120034651 A KR1020120034651 A KR 1020120034651A KR 20120034651 A KR20120034651 A KR 20120034651A KR 20130112351 A KR20130112351 A KR 20130112351A
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- KR
- South Korea
- Prior art keywords
- uhdtv
- data
- broadcast signal
- terrestrial
- broadcast
- Prior art date
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
The present invention relates to a UHDTV transmission system, and more particularly, in terrestrial transmission of a UHDTV broadcasting signal, a part of UHDTV broadcasting data is added instead of a part of null data of a terrestrial channel that is being serviced and transmitted to an existing terrestrial channel. The remaining UHDTV broadcast data is for a UHDTV transmission system that enables terrestrial transmission of UHDTV broadcast signals by transmitting using other terrestrial channels.
Globally, digital broadcasting provides HD and SD multi-channel services, but the requirements for 3DTV service and ultra-high definition digital TV (UHDTV) service using new digital broadcasting technology are the same. With the increase, R & D is actively progressing.
For example, due to the characteristics of visual resolution that is proportional to the size of the display device, a problem arises that HD-quality service cannot provide sufficient image quality in a 60-inch or larger display device. The device requires 4K (3840x2160) resolution.
In response, UHDTV broadcasting is a next-generation realistic broadcasting technology that realizes ultra-high definition video (4K / 8K) and multi-channel (10-channel or more) audio that is 4 to 16 times clearer than the quality provided by HDTV (2K). Make it possible.
In Korea, the broadcasting frequency band for transmitting analog TV broadcasting was 54 ~ 806MHz, but the digital conversion is made after the termination of the analog terrestrial broadcasting, and the broadcasting frequency band is reduced to 54 ~ 698MHz. Therefore, 108MHz of idle frequency bands are left in the existing analog TV broadcasts. Thus, discussions on providing services by transmitting UHDTV broadcast signals to these idle bands are in progress.
However, the domestic digital terrestrial transmission method uses 8VSB, the transmission bandwidth is 6MHz, and the data capacity is 19.39Mbps variable data rate, using one frequency even when using the latest High Efficiency Video Coding (HEVC) compression technology. To provide a UHDTV service is a difficult problem.
For example, in order to provide a 4K UHDTV broadcasting service, a data transmission capacity of a variable 25 Mbps data rate is generated, but service is difficult due to the terrestrial transmission bandwidth of 6 MHz.
An object of the present invention is to transmit a part of the null data transmitted in the HD terrestrial channel in the existing service as a part of the UHDTV broadcast data in UHDTV broadcast signal terrestrial transmission, and the remaining main UHDTV broadcast data is transmitted using an additional terrestrial channel By implementing a UHDTV transmission system and UHDTV MUX that enables terrestrial transmission of UHDTV broadcast signals.
According to an aspect of the present invention, there is provided a UHDTV transmission system comprising: an HD MUX for outputting a single HD terrestrial broadcast signal including HD broadcast data and null data; A UHDTV input unit to which UHDTV data is input; UHDTV MUX which generates a first terrestrial broadcast signal by adding a part of UHDTV data in place of a part of the HD broadcast signal null data which is the HD MUX output, and generates a second terrestrial broadcast signal by adding null data to the remaining UHDTV data. ; A first terrestrial wave transmitter for transmitting the first terrestrial broadcast signal; And a second terrestrial wave transmitter for transmitting the second terrestrial broadcast signal.
According to an aspect of the present invention, there is provided a UHDTV transmission system comprising: an HD broadcast data input unit to which HD broadcast data is input; A UHDTV input unit to which UHDTV broadcast data is input; The first terrestrial broadcast signal including the HD broadcast data input from the HD broadcast data input unit, the UHDTV broadcast data input from the UHDTV input unit, and null data is generated, and the second terrestrial broadcast is added by adding null data to the remaining UHDTV broadcast data. A UHDTV MUX for generating a signal; A first terrestrial wave transmitter for transmitting the first terrestrial broadcast signal; And a second terrestrial wave transmitter for transmitting the second terrestrial broadcast signal.
The UHDTV MUX comprises: a time slicer which cuts and outputs the UHDTV broadcast data in units of time; An HD & UHDTV MUX that receives a part of UHDTV broadcast data separated by the time slicer and the HD broadcast data, and adds PSI / PSIP and null data of HD to output the first terrestrial broadcast signal; And a UHDTV main MUX for outputting the second terrestrial broadcast signal by adding UHDTV PSI / PSIP and null data to the remaining UHDTV broadcast data separated by the time slicer.
The first terrestrial broadcast signal and the second terrestrial broadcast signal each have a reference 19.39 Mbps variable data rate, and a transmission frequency bandwidth is 6 MHz.
The first terrestrial broadcast signal includes an ATSC broadcast signal having a reference 12 Mbps variable data rate and UHDTV sub data having a reference 6 Mbps variable data rate, and the second terrestrial broadcast signal includes UHDTV main data having a reference 19 Mbps variable data rate. Characterized in that.
The HD broadcast data is compressed by MPEG 2, and the UHDTV broadcast data is compressed and input by HEVC or MPEG 4.
The UHDTV MUX according to the present invention for achieving the above object generates a first terrestrial broadcast signal including HD broadcast data input from an HD broadcast data input unit, a part of UHDTV broadcast data input from the UHDTV input unit, and null data. A UHDTV MUX for generating a second terrestrial broadcast signal by adding null data to the UHDTV broadcast data, wherein the time slicer cuts and outputs the UHDTV broadcast data in units of time; An HD & UHDTV MUX that receives a part of UHDTV broadcast data separated by the time slicer and the HD broadcast data, and adds PSI / PSIP and null data of HD to output the first terrestrial broadcast signal; And a UHDTV main MUX for outputting the second terrestrial broadcast signal by adding UHDTV PSI / PSIP and null data to the remaining UHDTV broadcast data separated by the time slicer.
The UHDTV MUX according to the present invention for achieving the above object adds a part of the UHDTV broadcast data in place of a part of the null data of the HD broadcast signal, which is an output of the HD MUX outputting a single HD terrestrial broadcast signal, thereby providing a first terrestrial broadcast signal. A time slicer for generating a second terrestrial broadcast signal by adding null data to the remaining UHDTV data to cut and output the UHDTV broadcast data by time unit; A UHDTV sub-MUX for outputting the first terrestrial broadcast signal by adding a part of UHDTV broadcast data separated by the time slicer in place of a part of null data of the HD broadcast signal; And a UHDTV main MUX for outputting the second terrestrial broadcast signal by adding UHDTV PSI / PSIP and null data to the remaining UHDTV broadcast data separated by the time slicer.
According to the present invention having the above-described configuration, a technology capable of transmitting a UHDTV broadcast signal using an additional terrestrial 1 channel included in the existing terrestrial 1 channel and terrestrial idle bands, and utilizes the existing terrestrial DTV transmission system. This enables economic and efficient transmission of UHDTV broadcast signals.
1 is a schematic diagram illustrating a configuration of a UHDTV transmission system according to a first embodiment of the present invention.
2 is a schematic diagram illustrating a configuration of a UHDTV MUX according to a second embodiment of the present invention.
3 is a conceptual diagram illustrating a process of channel bonding performed by a UHDTV transmission system according to an embodiment of the present invention.
4 is a schematic diagram illustrating a process of signal processing in an existing HD terrestrial receiver receiving a first terrestrial broadcast signal transmitted by a UHDTV transmission system according to an embodiment of the present invention.
5 is a schematic diagram illustrating a process of signal processing in a UHDTV receiver receiving a first terrestrial broadcast signal and a second terrestrial broadcast signal transmitted by a UHDTV transmission system according to an embodiment of the present invention.
Hereinafter, a configuration of a preferred embodiment of a UHDTV transmission system and a UHDTV MUX according to the present invention having the above configuration will be described in detail with reference to the accompanying drawings.
The UHDTV transmission system according to the first embodiment of the present invention replaces the HD broadcast
The HD broadcast
In this embodiment, the
In the embodiment of the present invention, since the HD broadcast is selected as the ATSC broadcast, the
The
The UHDTV MUX 210 according to the present embodiment receives the HD broadcast signal and the UHDTV broadcast data of the
For example, the UHDTV MUX 120 according to an embodiment of the present invention may include a time slicer that cuts and outputs the UHDTV broadcast data in units of time, and a portion of the UHDTV broadcast data separated by the time slicer, and null data of the HD broadcast signal. The second terrestrial broadcast signal is output by adding UHDTV PSI / PSIP and null data to the UHDTV sub-MUX that adds the first terrestrial broadcast signal and replaces the remaining UHDTV broadcast data separated by the time slicer. It can be configured to include the UHDTV main MUX.
In the present embodiment, the
The second terrestrial broadcast signal generated by the
However, the amount of data may vary depending on the reference data amount of the existing digital terrestrial 1 channel and the amount of UHDTV data added to the first terrestrial broadcast signal instead of null data according to the reference data amount of the UHDTV broadcast data to be transmitted. Of course, there may be increase or decrease depending on the instantaneous increase or decrease of the data amount, and is not limited to the above embodiment.
Unlike the terrestrial broadcast
In this case, the UHDTV MUX 300 generates a first terrestrial broadcast signal including HD broadcast data input from the HD broadcast data input unit, a part of UHDTV broadcast data and null data input from the UHDTV input unit, and nulls the remaining UHDTV broadcast data. The data is added to generate a second terrestrial broadcast signal.
For example, the
For example, the time slicer 301 cuts UHDTV data at 240 ms every 1 second to divide the reference 25 Mbps variable data rate UHDTV data amount into a reference 6 Mbps variable data rate and a reference 19 Mbps variable data rate. Or, it can be operated as sending to the ATSC & UHDTV
In this embodiment, the HD PSI / PSIP (or ATSC PSI / PSIP) is generated in the HD PSI / PSIP server (or ATSC PSI / PSIP server 320) to HD & UHDTV MUX (or ATSC & UHDTV MUX 302). The UHDTV PSI / PSIP is generated by the UHDTV PSI /
Meanwhile, the UHDTV PSI /
The first
Meanwhile, in the embodiment of the present invention, the transmission frequency of the first
The first
The second
In the exemplary embodiment of the present invention, a digital terrestrial wave 1 established by transmitting a second terrestrial broadcast signal (ie, UHDTV main data) based on one channel of an idle band according to domestic digital conversion as a frequency band for transmitting UHDTV. The first terrestrial broadcast signal (ie, UHDTV subdata) is transmitted using the additional channel, but is not limited thereto. The digital terrestrial wave in which the frequency and bandwidth of the basic channel through which the UHDTV broadcast signal is transmitted and the sub data of the UHDTV are transmitted are transmitted. The frequency and bandwidth of the channel may vary depending on the service policy and also depending on the country or region in which the service is performed.
In the conventional HD or HD receiver (or ATSC receiver 400) receiving the first terrestrial broadcast transmitted according to an embodiment of the present invention, the UHDTV broadcast data of PID to which null data is transmitted is regarded as null data and is HD broadcast. Only the data is decoded by the
Meanwhile, the
The
The scope of the present invention is not limited to the above embodiments, but is determined by the matters described in the claims, and it is obvious that the present invention includes various modifications and adaptations made by those skilled in the art in the claims and equivalents.
100 .... HD
120 ....
200 .... UHDTV Input 210,300 .... UHDTV MUX
250 .... the second
302 .... HD &
Claims (8)
A UHDTV input unit to which UHDTV data is input;
UHDTV MUX which generates a first terrestrial broadcast signal by adding a part of UHDTV data in place of a part of the HD broadcast signal null data which is the HD MUX output, and generates a second terrestrial broadcast signal by adding null data to the remaining UHDTV data. ;
A first terrestrial wave transmitter for transmitting the first terrestrial broadcast signal;
And a second terrestrial wave transmitter for transmitting the second terrestrial broadcast signal.
A UHDTV input unit to which UHDTV broadcast data is input;
The first terrestrial broadcast signal including the HD broadcast data input from the HD broadcast data input unit, the UHDTV broadcast data input from the UHDTV input unit, and null data is generated, and the second terrestrial broadcast is added by adding null data to the remaining UHDTV broadcast data. A UHDTV MUX for generating a signal;
A first terrestrial wave transmitter for transmitting the first terrestrial broadcast signal;
And a second terrestrial wave transmitter for transmitting the second terrestrial broadcast signal.
A time slicer which cuts and outputs the UHDTV broadcasting data in units of time;
An HD & UHDTV MUX that receives a part of UHDTV broadcast data separated by the time slicer and the HD broadcast data, and adds PSI / PSIP and null data of HD to output the first terrestrial broadcast signal;
And a UHDTV main MUX for outputting the second terrestrial broadcast signal by adding UHDTV PSI / PSIP and null data to the remaining UHDTV broadcast data separated by the time slicer.
A time slicer which cuts and outputs the UHDTV broadcasting data in units of time;
An HD & UHDTV MUX that receives a part of UHDTV broadcast data separated by the time slicer and the HD broadcast data, and adds PSI / PSIP and null data of HD to output the first terrestrial broadcast signal;
UHDTV MUX comprising a UHDTV main MUX for outputting the second terrestrial broadcast signal by adding UHDTV PSI / PSIP and null data to the remaining UHDTV broadcast data separated by the time slicer.
A time slicer which cuts and outputs the UHDTV broadcasting data in units of time;
A UHDTV sub-MUX for outputting the first terrestrial broadcast signal by adding a part of UHDTV broadcast data separated by the time slicer in place of a part of null data of the HD broadcast signal;
UHDTV MUX comprising a UHDTV main MUX for outputting the second terrestrial broadcast signal by adding UHDTV PSI / PSIP and null data to the remaining UHDTV broadcast data separated by the time slicer
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020120034651A KR20130112351A (en) | 2012-04-03 | 2012-04-03 | A transmission system for uhdtv broadcast and uhdtv multiplexer |
Applications Claiming Priority (1)
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KR1020120034651A KR20130112351A (en) | 2012-04-03 | 2012-04-03 | A transmission system for uhdtv broadcast and uhdtv multiplexer |
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KR20130112351A true KR20130112351A (en) | 2013-10-14 |
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KR1020120034651A KR20130112351A (en) | 2012-04-03 | 2012-04-03 | A transmission system for uhdtv broadcast and uhdtv multiplexer |
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2012
- 2012-04-03 KR KR1020120034651A patent/KR20130112351A/en not_active Application Discontinuation
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