Digital player using a pulse width detector

Details Digital player using a pulse width detector Digital player using a pulse width detector

1982-10-13

1985-12-31

Caldwell, Sr., John W.

Boots, shoes, and leggings

307268, 307265, 307234, 318312, 358322, 358338, 360 744, H03K 501, H03K 522

Patent

active

045625492

ABSTRACT:
In a pulse width detector circuit, a high-level pulse width and a low-level pulse width of a digital signal derived by slicing an analog signal reproduced from a disc at a predetermined level are independently measured and maximum or minimum values thereof in a predetermined time interval are stored, and an average value, sum or difference of the maximum or minimum high-level pulse width and the maximum or minimum low-level pulse width is calculated to detect a correct pulse width of original data recorded on the disc.

REFERENCES:
patent: 3940556 (1976-02-01), Boltz, Jr.
patent: 4321632 (1982-03-01), Leis et al.
patent: 4393420 (1983-07-01), Tomizawu
patent: 4423498 (1983-12-01), Kimura et al.
patent: 4449061 (1984-05-01), Yasuda et al.

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