US 2013/0156216 A1 · PLUG INSERTION DETECTION

Abstract

Techniques for detecting full insertion of a media plug into a corresponding jack. In an exemplary embodiment, first insertion detection circuitry for detecting the presence of a load is coupled to an innermost terminal of the jack. For North American type audio plugs, the first insertion detection circuitry detects the presence of a left headphone channel coupled to the innermost terminal of the jack. Coupling the insertion detection circuitry to the innermost terminal of the jack advantageously allows detection only when the plug is fully inserted into the jack. Additional detection circuitry may be provided and coupled to the other terminals of the jack. The disclosed techniques may readily be applied to other types of media plugs, e.g., European audio plugs, video plugs, etc.

Claims20

Dependent claims

An apparatus comprising:

a first power amplifier having a first output;
first insertion detection circuitry configured to detect a load coupled to the first output, the insertion detection circuitry configured to generate distinct voltages based on whether a load is detected;
a jack configured to receive a media plug, the jack having a plurality of terminals, the plurality of terminals comprising an innermost terminal making contact with the plug when the plug is fully inserted, the first insertion detection circuitry being electrically coupled to the innermost terminal of the jack when the plug is fully inserted.

Dependencies are inferred from the claim text.

Facts

Application

13/433,799Filed 29 Mar 2012

Priority

16 Dec 2011

Published

20 Jun 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04R 5/04
Stereophonic arrangements: circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker…
G01R 31/67
Testing of connections, e.g. of plugs or non-disconnectable joints: testing the correctness of wire connections in electric apparatus or circuits
G01R 31/68
Testing of connections, e.g. of plugs or non-disconnectable joints: testing of releasable connections, e.g. of terminals mounted on a printed…
H04R 1/1033
Earpieces; Attachments therefor ; Earphones; Monophonic headphones: cables or cables storage, e.g. cable reels

Plug insertion detection

Life of this patent

Plug insertion detection

Life of this patent

Abstract

Claims20