| 摘要 |
PURPOSE: A multi-functional audio jack by using input resistance is provided to select a line-in mode or a mike-in mode according to a resistance value of a plug insertion part when a user inserts a plug into the plug insertion part, thereby providing various multimedia functions to a user while reducing the number of jacks. CONSTITUTION: A multi-functional audio jack by using input resistance includes a plug insertion part(18) inserting a plug, a resistance measuring part(20) measuring resistance loaded to a tip terminal and a ring terminal according to the insertion of the plug, a switching signal output part(22) outputting a signal related to switching control based on a measuring signal of the resistance measuring part, and a plurality of switching parts(24,26) selecting an audio mode corresponding to the control signal output from the switching signal output part. |
