公开(公告)号：DE2445089A1

公开(公告)日：1975-04-03

申请号：DE2445089

申请日：1974-09-20

Applicant: SONY CORP

Inventor： KANEKO MASAYASU ,  OHSHIMA SYUNJI ,  ASANUMA YASUAKI

IPC: H04B1/44

Abstract: Circuits for use with a receiver which notify the operator of a receiving station by means of an audio tone when an opposite station is calling or has ceased transmission. The transition of an opposite station from its transmitting to receiving state or vice versa is detected and a specific change-over sound based upon the detector output is introduced into the principal station's receiver audio amplifier circuits.

公开(公告)号：CA1043422A

公开(公告)日：1978-11-28

申请号：CA209823

申请日：1974-09-23

Applicant: SONY CORP

Inventor： KANEKO MASAYASU ,  OHSHIMA SYUNJI ,  ASANUMA YASUAKI

IPC: H04B1/44 ,  H04B1/40

Abstract: A transceiver is composed of a circuit for detecting the fact that an opposit station is varied from its transmitting state to its receiving state and vice versa, and a circuit for producing a specific pause sound by an output signal from the aforesaid detecting circuit when the opposite station is varied from its transmitting state to its receiving state and vice versa.

公开(公告)号：AU7346674A

公开(公告)日：1976-03-25

申请号：AU7346674

申请日：1974-09-19

Applicant: SONY CORP

Inventor： KANEKO MASAYASU ,  OHSHIMA SYUNJI ,  ASANUMA YASUAKI

IPC: H04B1/44 ,  H04B1/40

Abstract: Circuits for use with a receiver which notify the operator of a receiving station by means of an audio tone when an opposite station is calling or has ceased transmission. The transition of an opposite station from its transmitting to receiving state or vice versa is detected and a specific change-over sound based upon the detector output is introduced into the principal station's receiver audio amplifier circuits.

公开(公告)号：JPS5821450B2

公开(公告)日：1983-04-30

申请号：JP10964873

申请日：1973-09-29

Applicant: SONY CORP

Inventor： KANEKO MASAYASU ,  OOSHIMA SHUNJI ,  ASANUMA YASUAKI

IPC: H04B1/16 ,  H04B1/40