JPS6454822A - Digital agc circuit - Google Patents

Digital agc circuit

Info

Publication number
JPS6454822A
JPS6454822A JP21185087A JP21185087A JPS6454822A JP S6454822 A JPS6454822 A JP S6454822A JP 21185087 A JP21185087 A JP 21185087A JP 21185087 A JP21185087 A JP 21185087A JP S6454822 A JPS6454822 A JP S6454822A
Authority
JP
Japan
Prior art keywords
value
shifted
multiplication
agc
coarse adjustment
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
JP21185087A
Other languages
Japanese (ja)
Other versions
JPH0531328B2 (en
Inventor
Fujio Nakagawa
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 JP21185087A priority Critical patent/JPS6454822A/en
Publication of JPS6454822A publication Critical patent/JPS6454822A/en
Publication of JPH0531328B2 publication Critical patent/JPH0531328B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Dc Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To compress the hardware of a variable gain generating means and a multiplication means, by providing a coarse adjustment AGC circuit by a shift means in an automatic gain control AGC circuit. CONSTITUTION:The average value of prescribed number of digital values outputted from a digital AGC just before is shifted 4 so that the same leading '0' of the value can be set as the leading '0' of a targeted value, and coarse adjustment AGC is performed by using the number of shift in which the above shifted number and the shifted number used in a previous coarse adjustment AGC are added 11. As for a fine adjustment coefficient, a ratio of an averaged level value shifted 3 to the same leading '0' to the targeted value of the average level is calculated 5, and the fine adjustment gain at a previous time and the gain of multiplication 7 can be obtained, therefore, a small value can be obtained, and an area for multiplication is stabilized by decided accuracy. In such a way, it is possible to reduce the output bit length of the variable gain generating means 5 and the input bit length of the multiplication means 6, thereby, to compress the hardware of a multiplier.
JP21185087A 1987-08-25 1987-08-25 Digital agc circuit Granted JPS6454822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21185087A JPS6454822A (en) 1987-08-25 1987-08-25 Digital agc circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21185087A JPS6454822A (en) 1987-08-25 1987-08-25 Digital agc circuit

Publications (2)

Publication Number Publication Date
JPS6454822A true JPS6454822A (en) 1989-03-02
JPH0531328B2 JPH0531328B2 (en) 1993-05-12

Family

ID=16612626

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21185087A Granted JPS6454822A (en) 1987-08-25 1987-08-25 Digital agc circuit

Country Status (1)

Country Link
JP (1) JPS6454822A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996389A (en) * 1996-09-07 1999-12-07 Eht Werkzeugmaschinen Gmbh Machining center for processing flat workpieces with a segment distributed hold-down
JP5382393B1 (en) * 2013-02-15 2014-01-08 東洋システム株式会社 Digital AGC control method and feedback control apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996389A (en) * 1996-09-07 1999-12-07 Eht Werkzeugmaschinen Gmbh Machining center for processing flat workpieces with a segment distributed hold-down
JP5382393B1 (en) * 2013-02-15 2014-01-08 東洋システム株式会社 Digital AGC control method and feedback control apparatus
WO2014125753A1 (en) * 2013-02-15 2014-08-21 東洋システム株式会社 Digital agc control method and feedback control device
US9391573B2 (en) 2013-02-15 2016-07-12 Toyo System Co., Ltd. Digital AGC control method and feedback control apparatus

Also Published As

Publication number Publication date
JPH0531328B2 (en) 1993-05-12

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