KR940013028A - Tone detection circuit - Google Patents

Tone detection circuit Download PDF

Info

Publication number
KR940013028A
KR940013028A KR1019920022119A KR920022119A KR940013028A KR 940013028 A KR940013028 A KR 940013028A KR 1019920022119 A KR1019920022119 A KR 1019920022119A KR 920022119 A KR920022119 A KR 920022119A KR 940013028 A KR940013028 A KR 940013028A
Authority
KR
South Korea
Prior art keywords
signal
multiplier
delay
coefficient
filter unit
Prior art date
Application number
KR1019920022119A
Other languages
Korean (ko)
Other versions
KR100201280B1 (en
Inventor
김윤태
강세진
Original Assignee
정용문
삼성전자 주식회사
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 정용문, 삼성전자 주식회사 filed Critical 정용문
Priority to KR1019920022119A priority Critical patent/KR100201280B1/en
Publication of KR940013028A publication Critical patent/KR940013028A/en
Application granted granted Critical
Publication of KR100201280B1 publication Critical patent/KR100201280B1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/02Calling substations, e.g. by ringing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Telephone Function (AREA)

Abstract

프로그래머블한 톤 검출회로에 관한 것이다.The present invention relates to a programmable tone detection circuit.

입력신호를 제1전달함수에 의해 연속적으로 제1차 및 제2차 필터링하고 상기 제2차 필터링 신호를 제2전달함수에 의해 평균치를 검출하여 톤신호를 검출한다.First transfer function of input signal First and second filtering successively by using a second transfer function of the second filtering signal The average value is detected by using a tone signal.

Description

톤 검출 회로Tone detection circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명에 따른 톤 검출 회로도.3 is a tone detection circuit diagram according to the present invention.

Claims (3)

톤 검출 회로에 있어서, 입력신호를 제1전달함수에 의해 연속적으로 제1차 및 제2차 필터링하는 제1 및 제2필터부(100, 200)와, 상기 제2차 필터링신호를 제2전달함수에 의해 평균치를 검출하여 톤신호를 검출하는 제3필터부(300)로 구성됨을 특징으로 하는 회로.A tone detection circuit, comprising: a first transfer function for input signal The first and second filter unit (100, 200) for filtering the first and second order continuously by the second transfer function and the second filtering signal And a third filter unit (300) for detecting an average value by detecting the tone signal. 제1항에 있어서, 제1필터부(100)가, 입력신호를 제1계수와 승산하는 제1승산기와, 상기 제1승산신호를 소정 신호들과 합산하는 제1합산기와, 상기 제1합산신호에 제2계수를 승산하여 상기 제2필터부(200)로 전달하는 제2승산기와, 상기 제2승산신호를 소정 지연하는 제1지연기와, 상기 제1지연신호에 제3계수를 승산하여 상기 제1합산기로 전달하는 제3승산기와, 상기 제1지연신호를 소정지연하는 제2지연기와, 상기 제2지연신호에 제4계수를 승산하여 상기 제1합산기로 전달하는 제4승산기로 구성됨을 특징으로 하는 톤 검출 회로.The multiplier of claim 1, wherein the first filter unit 100 comprises: a first multiplier that multiplies an input signal by a first coefficient; a first summer that adds the first multiplication signal by predetermined signals; A second multiplier that multiplies a second coefficient by a signal to the second filter unit 200, a first delay unit that delays the second multiplication signal by a predetermined delay, and multiplies a third coefficient by the first delay signal A third multiplier for transmitting the first delay signal, a second delay for predelaying the first delay signal, and a fourth multiplier for multiplying the second delay signal by a fourth coefficient and transmitting the multiplier to the first summer. Tone detection circuit, characterized in that. 제1항에 있어서, 제3필터부(300)가, 상기 제2차 필터링 신호를 제5계수와 승산하는 제5승산기와, 상기 제5승산신호를 소정 신호와 합산하여 톤신호를 출력하는 제2합산기와, 상기 제2합산신호를 소정 지연하는 제3지연기와, 상기 제3지연 신호에 제6계수를 승산하여 상기 제2합산기로 전달하는 제6승산기로 구성됨을 특징으로 하는 톤 검출 회로.The apparatus of claim 1, wherein the third filter unit 300 includes: a fifth multiplier that multiplies the second filtering signal by a fifth coefficient; and a fifth multiplier that adds the fifth multiplication signal by a predetermined signal to output a tone signal; And a second adder, a third delay for delaying the second sum signal, and a sixth multiplier for multiplying the third delay signal by a sixth coefficient and transferring the sixth coefficient to the second summer. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920022119A 1992-11-23 1992-11-23 Tone detecting circuit KR100201280B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920022119A KR100201280B1 (en) 1992-11-23 1992-11-23 Tone detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920022119A KR100201280B1 (en) 1992-11-23 1992-11-23 Tone detecting circuit

Publications (2)

Publication Number Publication Date
KR940013028A true KR940013028A (en) 1994-06-24
KR100201280B1 KR100201280B1 (en) 1999-06-15

Family

ID=19343730

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920022119A KR100201280B1 (en) 1992-11-23 1992-11-23 Tone detecting circuit

Country Status (1)

Country Link
KR (1) KR100201280B1 (en)

Also Published As

Publication number Publication date
KR100201280B1 (en) 1999-06-15

Similar Documents

Publication Publication Date Title
KR920005104A (en) Digital audio equalizer
EP0889416A3 (en) Digital signal processor architecture optimized for performing fast fourier transforms
CA2230108A1 (en) An apparatus for performing multiply-add operations on packed data
KR920000179A (en) Sampling Rate Converter
CA2008754A1 (en) Spread spectrum signal demodulator
KR890007568A (en) Signal Processing Device of Solid State Imaging Device
KR880005807A (en) Variable Signal Filtering Network
KR960003080A (en) Complex filter device
KR940013028A (en) Tone detection circuit
KR910006964A (en) Noise Reduction Circuit
KR890001379A (en) Video signal processing method and converter for same
KR880005604A (en) Sound quality control system
KR920001829A (en) Input Weighted Transitional Filter
KR880002167A (en) Video signal processing system
KR970024510A (en) Delayed FM Demodulation Circuit
KR960027271A (en) Digital filter with FIR structure
CA2161042A1 (en) Digital phase reversal detector
ATE118929T1 (en) DIGITAL FILTER.
SU1485238A1 (en) Digital differentiator
SU1550514A1 (en) Wave-type digital integrator
KR840008565A (en) Image signal processing circuit
SU834651A1 (en) Acoustic locator for measuring wind velocity
KR900019355A (en) Digital Highpass Filter
KR910009054A (en) Noise reduction circuit
KR940012119A (en) ARMA filter suitable for high speed processing

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20080228

Year of fee payment: 10

LAPS Lapse due to unpaid annual fee