| 摘要 |
To detect and correct bit errors in a digital information signal, particularly in PCM sound signal processing, a test word is used for checking the information signal for freedom from errors in a first error detection circuit (15). Checking an error signal (F), generated in a second error detection circuit (10), with the aid of the first or an error detection circuit (16) equal to the first one is a measure of the reliability of the test result of the first error detection circuit (15). <IMAGE>
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