Patent Number: 6,298,132

Title: Ringing-tone control device for telephone set, using audio signal sent by caller

Abstract: In a ringing-tone control device for a telephone set, an audio signal which is sent from a communication opposite party is converted into a corresponding bi-level signal. The bi-level signal is stored into the memory. The bi-level signal is read out from the memory. A ringing tone is generated in response to the bi-level signal read out from the memory.

Inventors: Harada; Hideo (Hamamatsu, JP), Suzuki; Haruo (Yokohama, JP)

Assignee: Matsushita Electric Industrial Co., Ltd.

International Classification: H04M 19/00 (20060101); H04M 19/04 (20060101); H04M 003/06 (); H04M 011/02 ()

Expiration Date: 10/02/2018