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JPS6446398A - System for sending and controlling tone signal - Google Patents

System for sending and controlling tone signal

Info

Publication number
JPS6446398A
JPS6446398A JP20282187A JP20282187A JPS6446398A JP S6446398 A JPS6446398 A JP S6446398A JP 20282187 A JP20282187 A JP 20282187A JP 20282187 A JP20282187 A JP 20282187A JP S6446398 A JPS6446398 A JP S6446398A
Authority
JP
Japan
Prior art keywords
tone signal
signal
audio signal
switch
selecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP20282187A
Other languages
Japanese (ja)
Other versions
JPH0750949B2 (en
Inventor
Sadao Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP20282187A priority Critical patent/JPH0750949B2/en
Publication of JPS6446398A publication Critical patent/JPS6446398A/en
Publication of JPH0750949B2 publication Critical patent/JPH0750949B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Devices For Supply Of Signal Current (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To obtain enough switch performance by switching a audio signal, generating a tone signal, executing a switching and selecting either the audio signal or the tone signal in the output side of a switch. CONSTITUTION:A control memory 104 for the audio signal and a control memory 106 for the tone signal are caused to correspond to the time slot of the output side and simultaneously read. Then, the control of a selecting circuit 107 is executed by the selecting information of the audio signal outputted from the control memory 106 for the tone signal or the tone signal. In case of the selecting information of the audio signal, according to information read from the control memory 104 for the audio signal, the audio signal is read from a memory switch 103 for the audio signal and outputted through the selecting circuit 107 to the switch. In case of the selecting information of the tone signal, according to tone signal selecting information read from the control memory 106 for the tone signal, the tone signal is read from a memory switch 105 for the tone signal and outputted through the selecting circuit 107 to the memory switch 105 for the tone signal.
JP20282187A 1987-08-14 1987-08-14 Tone signal transmission control method Expired - Lifetime JPH0750949B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20282187A JPH0750949B2 (en) 1987-08-14 1987-08-14 Tone signal transmission control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20282187A JPH0750949B2 (en) 1987-08-14 1987-08-14 Tone signal transmission control method

Publications (2)

Publication Number Publication Date
JPS6446398A true JPS6446398A (en) 1989-02-20
JPH0750949B2 JPH0750949B2 (en) 1995-05-31

Family

ID=16463752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20282187A Expired - Lifetime JPH0750949B2 (en) 1987-08-14 1987-08-14 Tone signal transmission control method

Country Status (1)

Country Link
JP (1) JPH0750949B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01270483A (en) * 1988-04-21 1989-10-27 Nec Ic Microcomput Syst Ltd Time division channel switching memory
US6674753B1 (en) 1998-07-10 2004-01-06 Nec Corporation Switching apparatus of time division multiplexing system for controlling data transmission through message memory shared between plural channels, method for data transmission and information storage medium for the method
EP2308621A1 (en) 2004-01-30 2011-04-13 Mitsubishi Materials Corporation Surface-coated cutting tool made of hard metal and manufacturing method for same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01270483A (en) * 1988-04-21 1989-10-27 Nec Ic Microcomput Syst Ltd Time division channel switching memory
US6674753B1 (en) 1998-07-10 2004-01-06 Nec Corporation Switching apparatus of time division multiplexing system for controlling data transmission through message memory shared between plural channels, method for data transmission and information storage medium for the method
EP2308621A1 (en) 2004-01-30 2011-04-13 Mitsubishi Materials Corporation Surface-coated cutting tool made of hard metal and manufacturing method for same

Also Published As

Publication number Publication date
JPH0750949B2 (en) 1995-05-31

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