Automatic knee control circuit

Details Automatic knee control circuit Automatic knee control circuit

1993-02-24

1994-10-18

Couso, Yon J.

Television

Camera, system and detail

Camera connected to computer

348254, 348255, 348257, 348678, 348687, 348691, 348686, 348696, H04N 530, H04N 5235, H04N 552

Patent

active

053572793

ABSTRACT:
An automatic knee control circuit including a knee circuit for setting a knee point and a knee slope, a detecting circuit for detecting an output signal of the knee circuit and a comparing circuit for comparing an output of the detecting circuit with a reference voltage, wherein the knee circuit is controlled on the basis of an output of the comparing circuit. This automatic knee control circuit is characterized by a distributing circuit for distributing the output of the comparing circuit by an arbitrary distributing ratio, wherein the setting of the knee point is controlled by a first distributed output and the setting of the knee slope is controlled by a second distributed output, thereby making it possible to set a wide variety of signal processing states with ease. Therefore, pictures corresponding to cameraman's intention can be produced.

REFERENCES:
patent: 4415866 (1983-11-01), Wermuth
patent: 4470067 (1984-09-01), Mino
patent: 4797744 (1989-01-01), Klemmer et al.
patent: 4821100 (1989-04-01), Yamamoto
patent: 4862270 (1989-08-01), Nishio
patent: 4980756 (1990-12-01), Lagoni
patent: 5162902 (1992-11-01), Bell et al.
patent: 5221963 (1993-06-01), Hashimoto et al.
Applicant's Submitted Prior Art (FIG. 4).

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