JPS5680917A - Thinning-out filter for sampled value - Google Patents

Thinning-out filter for sampled value

Info

Publication number
JPS5680917A
JPS5680917A JP15833379A JP15833379A JPS5680917A JP S5680917 A JPS5680917 A JP S5680917A JP 15833379 A JP15833379 A JP 15833379A JP 15833379 A JP15833379 A JP 15833379A JP S5680917 A JPS5680917 A JP S5680917A
Authority
JP
Japan
Prior art keywords
multipliers
inputted
output
circuit
fsh
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
JP15833379A
Other languages
Japanese (ja)
Other versions
JPS6322088B2 (en
Inventor
Akira Kanemasa
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
Nippon Electric Co Ltd
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, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15833379A priority Critical patent/JPS5680917A/en
Publication of JPS5680917A publication Critical patent/JPS5680917A/en
Publication of JPS6322088B2 publication Critical patent/JPS6322088B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/04—Recursive filters
    • H03H17/0416—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0427—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0438—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/045—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is lower than the input sampling frequency, i.e. decimation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2218/00—Indexing scheme relating to details of digital filters
    • H03H2218/06—Multiple-input, multiple-output [MIMO]; Multiple-input, single-output [MISO]

Abstract

PURPOSE:To reduce the structure of hardware while decreasing multiplying circuits by using a recursive digital filter having the transfer relation satisfying specific conditions. CONSTITUTION:Data of sampling rate fSH inputted to input terminals I1 and I2 are selected in time-division mode by selecting circuits 41 and 42 with the output signal of timing generating circuit 5. Next, the output signal of circuit 41 is inputted to multipliers 60, 62, 64, and 66, and that of circuit 42 to multipliers 61, 63, 65, and 67, where they are multiplied by coefficents. Outputs of multipliers 61-67, on the other hand, are inputted to adders 70-77 respectively. Next, pairs of delay element 8i and adder 7i are cascaded while (i) decreases from 7 to 0 and the output adder 70 is the final output and inputted to multipliers 90-93, where it is multiplied by coefficients. Outputs of multipliers 90-93 are inputted to adders 72, 74 and 76 and element 87. Therefore, a four-channel multiplexed signal of sampling frequency fSL=fSH/K (K=2 in this case) appears at output terminal 2.
JP15833379A 1979-12-06 1979-12-06 Thinning-out filter for sampled value Granted JPS5680917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15833379A JPS5680917A (en) 1979-12-06 1979-12-06 Thinning-out filter for sampled value

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15833379A JPS5680917A (en) 1979-12-06 1979-12-06 Thinning-out filter for sampled value

Publications (2)

Publication Number Publication Date
JPS5680917A true JPS5680917A (en) 1981-07-02
JPS6322088B2 JPS6322088B2 (en) 1988-05-10

Family

ID=15669344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15833379A Granted JPS5680917A (en) 1979-12-06 1979-12-06 Thinning-out filter for sampled value

Country Status (1)

Country Link
JP (1) JPS5680917A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61113314A (en) * 1984-11-08 1986-05-31 Nec Corp Sample value thinning-out digital filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61113314A (en) * 1984-11-08 1986-05-31 Nec Corp Sample value thinning-out digital filter

Also Published As

Publication number Publication date
JPS6322088B2 (en) 1988-05-10

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