Patent ID: 9222964
Filing Date: 2015-12-29
Classification: G01R,H01R,H04L

Abstract:
1. A cable detection apparatus, comprising: a cable connector on a first device, wherein the cable connector has an input-only pin that is connected to a receiver and assigned for receiving a first signal from a driver on a second device; a signal generator within the first device, wherein the signal generator has an output connected to the input-only pin, the signal generator driving a second signal onto the input-only pin, wherein the second signal has a frequency that is at least four times greater than the frequency of the first signal; and a detection module having a detection input connected to the input-only pin, wherein the detection module produces a negative cable detection output in response to detecting the second signal, and wherein the detection module produces a positive cable detection output in response to detecting a signal other than the second signal.