Test Card

テストパターン / 1934– / Style / Broadcast Design

The test image broadcast for calibration and downtime. Color bars, grids, circles and skin-tone references — engineering necessity that became a generation's shared memory of public geometric graphics.

Color bars / Concentric circles and grids / A skin-tone reference image / Waveform test patterns

Test Card — SMPTE RP219 カラーバー（CC BY-SA 4.0） — SMPTE RP219 カラーバー（CC BY-SA 4.0）

Test Card — テレフンケンFuBKテストパターン — SMPTE RP219 カラーバー（CC BY-SA 4.0）

Dictionary entry

Best used for: Comparing primary sources and canonical works · Extracting principles that transfer to other media
Type: Observe the letters, signs and scale of reference works
Composition: Extract the one structure that governs gaze and information
Material: Verify the materials and behaviors specific to era, region and process
Caution: Don't reduce it to surface signs. Verify the context of era, region, technology and makers.
Further study: Test Card F and Carole Hersee / PM5544 and FuBK / the standards history of SMPTE bars

Related entries

Channel Ident (チャンネル・イデント)
Blueprint (ブループリント)

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