Systems and methods to cable shield fault detection and protection
AssigneeMaxim Integrated Products, Inc.
InventorsAnurag Veerabathini, Punith Kumar Reddy Surkanti, Jan F. Swidzinski, Kevin John Schemansky
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Abstract
Described are system and method embodiments for establishing a weak ground path, comprising: disabling a first ground path for a shield pin of a cable connection interface, the first ground path including a first switch; enabling a second ground path for the shield pin, the second ground path comprises a second switch, and the second ground path having a higher resistance than the first ground path; determining a connection of a device to the cable connection interface with the second ground path; and enabling the first ground path based on the connection of the device being determined.
Claims20
A method of establishing a weak ground path, comprising:
- disabling a first ground path for a shield pin of a cable connection interface, the first ground path including a first switch;
- enabling a second ground path for the shield pin, the second ground path comprises a second switch, and the second ground path having a higher resistance than the first ground path;
- determining a connection of a device to the cable connection interface with the second ground path;
- and
- enabling the first ground path based on the connection of the device being determined.
A method of establishing a weak ground path, comprising:
- disabling a first ground path for a shield pin of a cable connection interface, the first ground path including a first switch;
- enabling a second ground path for the shield pin, the second ground path comprises a second switch, and the second ground path having a higher resistance than the first ground path;
- determining a connection of a device to the cable connection interface with the second ground path;
- enabling the first ground path based on the connection of the device being determined;
- and
- limiting peak voltage on the shield pin with a clamp.
A weak ground path system, comprising:
- a first switch, the first switch disables a first ground path for a shield pin of a cable connection interface;
- a second switch, the second switch enables a second ground path for the shield pin, and the second ground path having a higher resistance than the first ground path;
- a comparator, the comparator determines a connection of a device to the cable connection interface with the second ground path;
- and
- a logic control module, the logic control module enables the first ground path based on the connection of the device being determined.
Dependencies are inferred from the claim text.