Waveform formatter

Details Waveform formatter Waveform formatter

1994-09-21

1995-11-07

Wambach, Margaret Rose

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Clock or pulse waveform generating

327241, 327270, 327273, 327407, 371 21, 371 24, 39518301, H03K 104, H03K 1100

Patent

active

054650666

ABSTRACT:
A waveform formatter for use in testing a semiconductor device is capable of reducing a total size of circuit configuration. The waveform formatter includes a plurality of clock generators in which at low-speed operation, clocks are used to generate waveforms and control signals of drivers, while at high-speed operation, all clocks are used to generate waveforms for drivers. The waveform formatter further includes a parallel-serial converter for converting parallel signals to a serial signal, a data selector for selecting the parallel signals or the serial signal, and a waveform combining circuit for accepting output signals of the clock generators through a format control unit and for generating waveforms and control signals for the drivers using the clocks from the clock generators.

REFERENCES:
patent: 5406132 (1995-04-01), Housako

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