System and method for measuring a high speed signal

Details System and method for measuring a high speed signal System and method for measuring a high speed signal

2006-09-26

2006-09-26

Nguyen, Duc M. (Department: 2685)

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

C455S423000, C455S115100, C455S115300, C455S226100, C455S226200, C714S724000, C714S731000, C375S224000, C375S225000, C341S126000, C341S155000, C370S241000, C370S252000

Reexamination Certificate

active

07113749

ABSTRACT:
An apparatus is provided for measuring an output of a high-speed data transmission circuit. The apparatus includes a programmable reference voltage generator operable to generate a reference voltage that is variable between a plurality of levels. The apparatus also includes a quantizer to quantize an output of the high-speed data transmission circuit relative to the reference voltage level input thereto. Also included is a clock generator operable to generate a clock having a transitioning time (rise-time, fall-time or both) that is less than one quarter of a minimum switching period of the output of the circuit. Finally, the apparatus includes a sampler operable to sample the quantized output with the clock to produce a plurality of samples which measure the output of the circuit.

REFERENCES:
patent: 4371850 (1983-02-01), Klement
patent: 4710927 (1987-12-01), Miller
patent: 2004/0027993 (2004-02-01), Ghiasi et al.
patent: 2004/0135231 (2004-07-01), Keller et al.
patent: 2004/0161070 (2004-08-01), Yin et al.

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