Facsimile error transmission prevention device

Abstract

Abstract PURPOSE:To prevent the mis-transmission of facsimile, by storing a telephone number and an identification number of a communication opposite device and collating its identification number with that extracted from a signal transmitted from a receiver. CONSTITUTION:A receiver signal analysis circuit 1 extracts information of a CSI from a signal representing the response of a transmission opposite side. Further, a dial number detecting circuit 2 detects a number dialed by the operator. An ID (identification) number storage circuit 3 stores the telephone number of the communication opposite device and the ID number corresponding to it and the stored ID number is read out based on the number detected at the circuit 2. A collating circuit 4 fetches CSI information of the circuit 1 and the stored ID number in the circuit 3, checks the presence of coincidence and when coincident, a coincidence signal ''1'' is generated and when dissident, a dissidence signal ''0'' is generated. When the signal goes to ''1'', the transmission is attained and when the signal goes to ''0'', the transmission is made disable.

Inventors

• 👤 Hideki Muroya
• 👤 室矢　英樹
• 👤 Etsuo Ishii
• 👤 悦男 石井

Bibliographic Details