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电视测试卡是检验摄象系统的重要标准工具。通用测试卡的图案均为长方形,其宽高比为4:3,这对圆形显示的电视系统来讲是不方便的,因此需要制作特种测试卡。本文介绍了它们的图案设计和应用事项供电视工作者参考。
TV test card is an important standard test camera system tool. The Universal Test Card has a rectangular pattern with a 4: 3 aspect ratio, which is inconvenient for a circularly-displayed television system and therefore requires the production of a special test card. This article describes their pattern design and application issues for reference by television workers.