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US 5,206,853 AGranted
Apparatus and method for detecting intersymbol interference
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorShinichi Tanaka
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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorShinichi Tanaka
Estimating the term…
An apparatus for detecting an intersymbol interference occurred in a digital signal during signal transmission includes a test pattern generator, which would produce the largest intersymbol interference on a recording medium and reading the test pattern therefrom. The apparatus further includes a measuring circuit for measuring short transition intervals representing one bit pattern and producing a reproduction signal, and a rectangular signal with, reference to a predetermined threshold. The apparatus includes a calculating circuit for calculating the total intersymbol interference by a bit length and measured transition intervals. Furthermore, the apparatus detects the total intersymbol interference by measuring long transition intervals representing four series of bit patterns and the short transition intervals.
An apparatus for detecting an intersymbol interference in a digital signal read out from a recording medium comprising:
An apparatus for detecting an intersymbol interference in a digital signal read out and transmitted from a recording medium comprising:
A method for detecting an intersymbol interference in a digital signal read out and transmitted from a recording medium comprising the steps of:
Dependencies are inferred from the claim text.