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On behalf of the Ninshoshiken.com team, thank you all for kindly sharing your beautiful pictures.
1. Pascal Volk
2. José Fonseca
3. Diego Correa
4. Sam-Cat
6. Danny Choo
7. Markus Ritzmann
https://www.flickr.com/photos/weissertiger2/
8. https://www.flickr.com/photos/preetamrai/5386888634/
Yosomono
9. HDMI Org.
Photos used in the article: HDMI 2.1の新機能を搭載したデバイスがいよいよ登場!
https://www.hdmi.org/press/press_kit.aspx
10. Standardizer
Feature Image used in the article: Bluetoothロゴ認証で必要なRF試験サンプル改造https://commons.wikimedia.org/wiki/File:Bluetooth_logo_on_mouse_from_aside.jpg
11. Foobaz
Feature Image used in the article: Wi-Fiの新セキュリティ・・・WPA2から進化したWPA3の仕組み
https://commons.wikimedia.org/wiki/File:NetworkTopology-Mesh.png
12. Ilya Plekhanov
Feature Image used in the article: USB Type-C Functional TestのTD 4.1.1について
https://commons.wikimedia.org/wiki/File:LeTV_X600_USB_Type_C_port.jpg
13. THA-Zp
Feature Image used in the article: Bluetoothの技術更新情報とロゴ認証への影響
https://www.mediawiki.org/wiki/File:BluetoothScatternet.png
14. Fastily
Feature Image used in the article: あなたの充電環境を守るMCPC認証試験について
https://en.wikipedia.org/wiki/File:USB_Charger_1_2017-02-02.jpg
15. Florichfootwear.com
Feature Image used in the article: Preventing Electrostatic Discharge at the Lab
http://florichfootwear.com/index.php/product/sl-1624/
16. Hansueli Krapf
Image used in the article: Preventing Electrostatic Discharge at the Lab
https://commons.wikimedia.org/wiki/File:Lightning_14.07.2009_20-42-33.JPG
17. Wikepedia (No author)
Feature image used in the article: Preventing Electrostatic Discharge at the Lab
https://commons.wikimedia.org/wiki/File:Simbolo_SMD.JPG
18. Neil Aitkenhead@Wikipedia
Feature image used in the article: HDR10+認証試験用のテストパターンコンサルティング
https://commons.wikimedia.org/wiki/File:%22Bright_%5E_Sunny%22_According_To_The_Weather_Forecast_-_panoramio.jpg
19. Maurizio Pesce @Wikipedia
Image used in the article: USB Type-C時代の電力関連の仕様とそれに関わる認証試験の例
https://commons.wikimedia.org/wiki/File:MacBook_with_Retina_Display_(5).jpg
20. Porsche 911GT2
Feature image used in the article: 第111回 USB Workshopトピックのご紹介
https://commons.wikimedia.org/wiki/File:OnePlus_3_USB_port_and_the_cable.jpg
21. @Wikipedia
Image used in the article: パソコンの普及拡大と周辺機器をつなぐUSBインターフェースの相互関係
By User:Mattes – Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=11178128
22. PascalSijen
Image used in the article: HDMI2.1の新機能(eARC)を対応したデバイスが市場へ既に登場した!
By PascalSijen – https://www.flickr.com/photos/pascalsijen/3518284515/, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=46904243
23. VIA Gallery
Image used in the article: USB2.0 High-Speed接続時の誤動作対策について
https://commons.wikimedia.org/wiki/File:VIA_Labs_VL701_Low_Power_USB_3.0_to_SATA_Bridge_(5692034370).jpg
24. William Hook
Image used in the article: USB2.0 High-Speed接続時の誤動作対策について
https://commons.wikimedia.org/wiki/File:MacBook_Connections_(2981325027).jpg
25. Ben Franske
Image used in the article: USB 3.2 Gen1機器におけるEMI試験のご紹介
https://commons.wikimedia.org/w/index.php?curid=5718011
26. Michael Gasperl (Migas)
Image used in the article: SDメモリーカードについて
https://commons.wikimedia.org/w/index.php?curid=9065859
27. 【フリー素材/4K】月明かりと水辺の都市夜景CGアニメーションHDR風2160p癒しヒーリングリラクゼーション (フリー素材chキャターズアイ)
Image used in the article: 高品位4K HDR TV、Mobile HDR認証規格