Connector device for information-handling apparatus and connecto

Details Connector device for information-handling apparatus and connecto Connector device for information-handling apparatus and connecto

1997-08-28

2000-05-30

Isen, Forester W.

Electrical audio signal processing systems and devices

Headphone circuits

381 945, 381120, 381 80, 381123, H04R 5033

Patent

active

060699604

ABSTRACT:
A connector device for connecting information-handling apparatus has a common jack connected to a first information-handling apparatus, a plurality of plugs connected respectively to a plurality of second information-handling apparatus having respective different impedances, the plugs being selectively connectable to the jack, and a determining circuit for, when one of the plugs is connected to the common jack, applying a predetermined voltage to a contact of the connected plug through an impedance element, detecting a voltage between the contact of the connected plug and a ground contact thereof, detecting an impedance between the contact of the connected plug and the ground contact thereof depending on the detected voltage, and determining the type of the plug or the type of the second information-handling apparatus connected to the plug depending on the detected impedance.

REFERENCES:
patent: 5034808 (1991-07-01), Murray
patent: 5161198 (1992-11-01), Noble
patent: 5598227 (1997-01-01), Mikami

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