JP2020184662A - Video conversion method for 2K TV - Google Patents
Video conversion method for 2K TV Download PDFInfo
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- JP2020184662A JP2020184662A JP2019087149A JP2019087149A JP2020184662A JP 2020184662 A JP2020184662 A JP 2020184662A JP 2019087149 A JP2019087149 A JP 2019087149A JP 2019087149 A JP2019087149 A JP 2019087149A JP 2020184662 A JP2020184662 A JP 2020184662A
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本発明は、超高精細テレビ（４Kや８Kと呼ばれる）の映像を、現在もっとも普及している２Kテレビで、同じ精細度、ただしその映像の一部分を受像可能とする方法に関するものである。 The present invention relates to a method for making an image of an ultra-high-definition television (called 4K or 8K) possible to receive an image of the same definition but a part of the image on the most popular 2K television at present.
ビデオ信号の基礎とその操作法：今村元一（CQ出版社）
Basics of video signals and how to operate them: Motoichi Imamura (CQ Publisher)
解決しようとする問題点は、超高精細テレビの映像を２Kテレビで受像できるよう映像変換する方法についてのものである。 The problem to be solved is a method of converting an ultra-high-definition television image so that it can be received on a 2K television.
超高精細テレビの映像は、４Kの場合横３８４０画素×縦２１６０画素、８Kの場合横７６８０画素×縦４３２０画素から構成されている。一方２Kテレビにおいては、その映像は横１９２０画素×縦１０８０画素から構成されている。 The image of the ultra-high-definition television is composed of 3840 pixels in the horizontal direction and 2160 pixels in the vertical direction in the case of 4K, and 7680 pixels in the horizontal direction and 4320 pixels in the vertical direction in the case of 8K. On the other hand, in a 2K television, the image is composed of 1920 pixels in the horizontal direction and 1080 pixels in the vertical direction.
そこで２Kテレビにおいて、４Kの場合の１画素を横２画素×縦２画素に割り当て、８Kの場合の１画素を横４画素×縦４画素に割り当てれば、同じ精細さを得られることになる。 Therefore, in a 2K TV, if 1 pixel in the case of 4K is assigned to 2 pixels in the horizontal direction x 2 pixels in the vertical direction and 1 pixel in the case of 8K is assigned to 4 pixels in the horizontal direction x 4 pixels in the vertical direction, the same fineness can be obtained. ..
しかし上記のような割り当てを行えば、２Kテレビにおいてその全画面において４Kテレビの画面の１／４また８Kテレビの画面の１／１６部分しか映し得ない。これは当然な止むを得ない事態であるが、そこでこれに対処するためには４Kないし８Kテレビの画面のどの部分（どこから始まる部分）を２Kテレビの画像にするかを指定する必要がある。 However, if the above allocation is made, only 1/4 of the screen of the 4K TV or 1/16 of the screen of the 8K TV can be displayed on the entire screen of the 2K TV. This is a natural unavoidable situation, but in order to deal with this, it is necessary to specify which part (where the part starts) of the screen of the 4K to 8K TV is the image of the 2K TV.
本発明の２Kテレビ用映像変換法は、現存の２Kテレビと今後の超高精細テレビ間の非可換性をある制約の下で解決し、両者の長所をそれぞれ生かした新しいテレビ受像方法システムを開発するという利点がある。 The video conversion method for 2K televisions of the present invention solves the non-commutability between existing 2K televisions and future ultra-high-definition televisions under certain restrictions, and provides a new television image reception method system that takes advantage of the advantages of both. It has the advantage of developing.
この映像変換システム内容には、超高精細テレビ映像の１画素を２Kテレビの複数画素に割り当てる機能と、超高精細テレビ画面のどの部分を２Kテレビの画像に指定するかの機能が必要である。 The contents of this video conversion system require a function of allocating one pixel of ultra-high-definition television video to a plurality of pixels of 2K television and a function of designating which part of the ultra-high-definition television screen as an image of 2K television. ..
本発明システムの実施例の１は、この機能を持つシステムを超高精細テレビの送信側で用意する形態である。この場合の利点は、送信側では超高精細テレビの画面のどの部分を２Kテレビの画像に指定すべきかを送る側の意図として分かっていることにあろう。一方その欠点は、このために新たにこれ専用送信の信号チャネルを別に必要とすること、また送信側では本来超高精細映像を全て送りたいゆえ余り熱意の沸かないことが挙げられるであろう。 One of the examples of the system of the present invention is a mode in which a system having this function is prepared on the transmitting side of an ultra-high definition television. The advantage in this case would be that the sender knows which part of the screen of the ultra-high definition television should be designated as the image of the 2K television as the intention of the sender. On the other hand, its drawbacks are that it requires a new signal channel for dedicated transmission for this purpose, and that the transmitting side originally wants to send all the ultra-high-definition video, so it is not very enthusiastic.
本発明システムのもう一つの実施例の２は、この機能を持つシステムを２Ｋテレビの受信側で用意する形態である。つまり２Ｋテレビの入力前装置として、このシステムを個々に持つ。この場合の利点は、対象とする超高精細テレビの画面のどの部分を２Kテレビの画像に取り込むかをユーザ側で好きなように選択できることである。その代わりの欠点は、このシステムをユーザが自己負担で準備しなければならない。 Another second embodiment of the system of the present invention is a mode in which a system having this function is prepared on the receiving side of a 2K television. That is, this system is individually provided as a pre-input device for a 2K television. The advantage in this case is that the user can freely select which part of the screen of the target ultra-high-definition television is to be captured in the image of the 2K television. The alternative drawback is that the user has to prepare the system at his own expense.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2019087149A JP2020184662A (en) | 2019-05-01 | 2019-05-01 | Video conversion method for 2K TV |
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| JP2019087149A JP2020184662A (en) | 2019-05-01 | 2019-05-01 | Video conversion method for 2K TV |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006262514A (en) * | 1997-04-16 | 2006-09-28 | Seiko Epson Corp | Digital camera |
| JP2012060575A (en) * | 2010-09-13 | 2012-03-22 | Canon Inc | Video processing device and control method therefor |
| JP2015226222A (en) * | 2014-05-28 | 2015-12-14 | 日本放送協会 | Receiving device and program |
| JP2017069718A (en) * | 2015-09-29 | 2017-04-06 | 株式会社ソニー・インタラクティブエンタテインメント | Imaging device, information processing device, display device, information processing system, image data transmission method, and image display method |
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- 2019-05-01 JP JP2019087149A patent/JP2020184662A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006262514A (en) * | 1997-04-16 | 2006-09-28 | Seiko Epson Corp | Digital camera |
| JP2012060575A (en) * | 2010-09-13 | 2012-03-22 | Canon Inc | Video processing device and control method therefor |
| JP2015226222A (en) * | 2014-05-28 | 2015-12-14 | 日本放送協会 | Receiving device and program |
| JP2017069718A (en) * | 2015-09-29 | 2017-04-06 | 株式会社ソニー・インタラクティブエンタテインメント | Imaging device, information processing device, display device, information processing system, image data transmission method, and image display method |
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