发明名称 CD quality wireless door chime
摘要 A doorbell system having a sound memory for storing and playing a CD quality doorbell sound is disclosed. Said doorbell system includes a receiver unit for receiving an indication of a doorbell button being pressed, a code detector for commanding the sound memory to output stored sound signals and sound producing means for outputting a CD quality sound. Also disclosed is a method for storing a CD quality sound into a doorbell system.
申请公布号 US6175298(B1) 申请公布日期 2001.01.16
申请号 US19980130042 申请日期 1998.08.06
申请人 THE LAMSON & SESSIONS CO. 发明人 XYDIS THOMAS G.
分类号 G08B3/10;(IPC1-7):G08B3/00 主分类号 G08B3/10
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