JP2004364123A - Frequency division ratio output device for frequency divider - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a frequency division ratio output device for a frequency divider with simple configuration, which sets a frequency division ratio to a value that is not higher than a decimal point and outputs the frequency division ratio. <P>SOLUTION: This frequency division ratio output device is provided with a reference value setter 12 for setting a reference value for calculating a frequency division ratio to a value 65.5 down to n decimal places, an integer/decimal divider 14a for dividing the set reference value into the integer part 65 and the decimal 0.6 with n places and outputting the resultant numbers, a decimal adder 14b for receiving and adding outputted decimals, and outputting added decimals as an integer 1 when the added decimals is a value that is equal to or greater than the integer 1, and a frequency division ratio adder 14c for receiving the value of an outputted integer part, adding an integer 1 to the received value of the integer part when the integer 1 is outputted and meanwhile outputting the received value of the integer part as it is when the integer 1 is not outputted. The device regards the outputted value as a frequency division ratio, and frequency dividing an input signal (output pulse of rotation sensor 22) with the frequency division ratio to generate an output signal. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a frequency division ratio output device for a frequency divider.
[0002]
[Prior art]
The frequency divider divides the frequency of the input signal to produce an output signal with a reduced frequency of the input signal, but the frequency division ratio is not limited to an integer and may be set to a value up to a decimal point. The present applicant has also previously proposed the technique described in Patent Document 1.
[0003]
[Patent Document 1]
Japanese Patent No. 2821982
In the technique described in Patent Document 1, when the reference value for calculating the frequency division ratio is set to a value up to the first decimal place, n is an integer part of the value and x is a decimal part of the value. , (10−x) integer values n and x integer values (n + 1) are stored at random in a memory and sequentially output, so that a predetermined number of times can be calculated. It is configured such that the obtained value is the division ratio up to the set first decimal point.
[0005]
[Problems to be solved by the invention]
As described above, in the frequency dividing ratio output device of the frequency divider according to the related art, it is necessary to calculate two different integers as random numbers every time the reference value is set, and thus the configuration becomes inconvenient. Was.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned inconveniences, and to accurately output a division ratio below a decimal point and to divide an input signal by the output division ratio, with a simple configuration, to detect an intended signal. An object of the present invention is to provide a frequency division ratio output device of a frequency divider that can obtain accuracy.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to claim 1, in a device for outputting a frequency division ratio of a frequency divider for generating an output signal having a frequency reduced by dividing the frequency of an input signal, Reference value setting means for setting a reference value for calculating the frequency division ratio to a value up to n decimal places, dividing means for dividing and outputting the set reference value into an integer part and the n-th decimal number, Inputting and outputting the output decimal number, when the added decimal number becomes a value greater than or equal to an integer m, adding means for outputting the value as an integer m, and inputting the value of the output integer part; When the integer m is output from the adding means, the integer m is added to the value of the input integer part. When the integer m is not output from the decimal addition means, the value of the input integer part is output as it is. Output means for outputting the output value. It adapted to generate said output signal by dividing the input signal as the frequency division ratio.
[0008]
The reference value for calculating the frequency division ratio is set to a value up to the n-th decimal place, the set reference value is divided into an integer part and a decimal number of the n-th place, and output. Addition, when the added decimal value is greater than or equal to the integer m, output as an integer m, input the value of the output integer part, and when the integer m is output, input the integer m. When the integer m is not output, the input integer value is output as it is, and the output signal is generated by dividing the input signal by using the output value as the dividing ratio. Therefore, it is possible to accurately output the frequency division ratio below the decimal point, and obtain an intended detection accuracy by dividing the frequency of the input signal by the output frequency division ratio, with a simple configuration. Thereby, for example, even when the interval between the occurrences of the input signal, which greatly affects the detection accuracy of the frequency division ratio, is long, the error can be minimized, and the desired detection accuracy can be obtained.
[0009]
3. An apparatus for outputting a frequency division ratio of a frequency divider for generating an output signal having a frequency reduced by dividing a frequency of an input signal, the reference for calculating the frequency division ratio. A reference value setting means for setting a value to a value up to n decimal places, an integer conversion means for converting the set reference value to an integer raised to the power of 10 to obtain an integer, and adding the integer value. Output means for dividing both the value and the added value up to the previous time by the n-th power of 10 and outputting the difference, dividing the input signal by using the output value as the frequency division ratio, It is configured to generate an output signal.
[0010]
Similarly, the set reference value is multiplied by 10 to the power of n and converted to an integer, and both the value obtained by adding the converted integer value and the added value up to the previous time are divided by 10 to the power of n. The difference is output, and the output value is divided by using the output value as the division ratio to generate the output signal.Thus, with a simple configuration, the division ratio below the decimal point can be accurately output. The desired detection accuracy can be obtained by dividing the input signal by the output division ratio. Thereby, for example, even when the interval between the occurrences of the input signal, which greatly affects the detection accuracy of the frequency division ratio, is long, the error can be minimized, and the desired detection accuracy can be obtained.
[0011]
4. A device for outputting a frequency division ratio of a frequency divider for generating an output signal having a frequency reduced by dividing the frequency of an input signal according to claim 3. A reference value setting means for setting the value to a value up to n decimal places, an integer conversion means for converting the set reference value to an integer raised to the power of 10; and Output means for adding a remainder obtained by dividing the calculated value by the 10 nth power, dividing the obtained sum by the 10nth power, and outputting a quotient obtained thereby, The input signal is divided as a division ratio to generate the output signal.
[0012]
Similarly, the set reference value is multiplied by 10 to the power of n, converted to an integer, and the remainder obtained by dividing the previously converted value to the power of 10 by the n-th power is added to the converted value to the integer. The sum is divided by the nth power of 10 to output the quotient thus obtained, and the output signal is divided by using the output value as a division ratio to generate an output signal. In spite of this, it is possible to accurately output the frequency division ratio below the decimal point, and to obtain the intended detection accuracy by dividing the input signal by the output frequency division ratio. Thereby, for example, even when the interval between the occurrences of the input signal, which greatly affects the detection accuracy of the frequency division ratio, is long, the error can be minimized, and the desired detection accuracy can be obtained.
[0013]
According to a fourth aspect of the present invention, the output of the output means is obtained in advance for a predetermined number of times and is sequentially output.
[0014]
Since the output of the output means is obtained in advance for a predetermined number of times and sequentially output, the configuration can be further simplified in addition to the above-described effects.
[0015]
According to a fifth aspect of the present invention, the reference value setting means is configured to correct the set reference value according to an operating environment or an operating state of a device that generates the input signal.
[0016]
Since the reference value set according to the operating environment of the device that generates the input signal is configured to be corrected, the interval between the input signals is long in the device that generates the input signal such as the rotation sensor, in other words, the frequency division. In an operating environment or operating state in which the ratio has a large effect on the detection accuracy, the error can be minimized by appropriately correcting the reference value for calculating the frequency division ratio, and the intended detection can be performed. Accuracy can be obtained.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a frequency division ratio output device of a frequency divider according to one embodiment of the present invention will be described with reference to the accompanying drawings.
[0018]
FIG. 1 is a schematic diagram showing an entire configuration of a frequency division ratio output device of a frequency divider according to the embodiment.
[0019]
In the figure, reference numeral 10 denotes a frequency division ratio output device of a frequency divider that divides the frequency of an input signal to generate an output signal having a reduced frequency. The device 10 is specifically composed of a microcomputer, and sets a reference value for calculating the frequency division ratio to a value of n decimal places, more specifically, a value up to the first decimal place such as 65.6. (Reference value setting means) 12, an integer digitizer 14 for converting a set reference value into an integer and outputting it as a dividing ratio, and an operation environment detector 16 for detecting an operation environment or an operation state of a device which generates an input signal. And
[0020]
Hereinafter, the configuration of the frequency division ratio output device 10 will be described by taking as an example a case where a signal of a speedometer (not shown) indicating the traveling speed (wheel speed) of the vehicle is frequency-divided.
[0021]
As shown in the drawing, a pulsar 20 is arranged near a differential gear (not shown) of a vehicle 18 schematically shown, and a rotation sensor (input signal generation device) 22 composed of an electromagnetic pickup is provided at a position facing the pulsar 20. Be placed. The pulser 20 has approximately 40 to 50 teeth, and the rotation sensor 22 outputs a rectangular wave signal composed of pulses corresponding to the number of teeth per rotation of the differential gear.
[0022]
The output rectangular wave signal is input to the waveform shaper 24 and shaped, and the waveform-shaped sensor output (pulse) is then input to the pulse counter 26 where the pulses are counted. The count value thus obtained is input to the comparator 30, where it is compared with the output of the integerizer 14. In this embodiment, the reference value is set to a value including, for example, a decimal number such as 65.6, but the integer generator 14 outputs the reference value as a dividing ratio composed of an integer of 65 or 66 as described later. .
[0023]
The comparator 30 compares the input count value with its integer (frequency division ratio), and when they match, generates an output and sends it to the PWM output circuit 32. That is, the comparator 30 outputs an output (for example, a pulse) each time the number of input pulses reaches 65 or 66. The output is sent to a PWM output circuit 32. The PWM output circuit generates and outputs a PWM (pulse width modulation) signal to a drive circuit of a needle (not shown) of a speedometer (analog meter) based on a comparator output. And drive the needle. In this embodiment, the frequency divider includes a frequency division ratio output device 10, a rotation sensor 22, a pulse counter 26, a comparator 30, and the like.
[0024]
Here, a tire pressure sensor 36 is arranged on the tire 34 of the vehicle 18 to output a signal indicating the air pressure charged in the tire, and a stroke sensor 40 is arranged near a suspension (not shown). A signal corresponding to the displacement of the suspension, more specifically, the load on the vehicle (including the load by the occupant) is output (only one tire pressure sensor 36 and stroke sensor 40 are shown on the front wheel side). Further, an outside air temperature sensor 42 is disposed at an appropriate position in an engine room (not shown) of the vehicle 18, and outputs a signal proportional to the outside air temperature.
[0025]
The outputs of these sensors are input to the operating environment detector 16. The output of the PWM output circuit 32 is also input to the operating environment detector 16. The operating environment detector 16 detects the air pressure (tire air pressure), the load (load load), and the outside air temperature from the output of the sensor group, and also detects the wheel speed (vehicle speed) by counting the output of the PWM output circuit 32.
[0026]
These detected values are values that indicate the operating environment or operating state of the device that generates the input signal, that is, the rotation sensor 22. These detected values are sent to the reference value setting device 12, as shown in FIG.
[0027]
The reference value setting unit 12 is configured to set the frequency division ratio to 65.6 or the like as described above so that the desired detection accuracy can be obtained in accordance with the provisions of laws and regulations regarding detection or display of wheel speed (vehicle speed). Set the value up to the decimal place. In addition, the lower the wheel speed, the longer the interval between input signals and the greater the influence of the frequency division ratio on the detection accuracy, and the amount of deformation of the tire also varies depending on the air pressure (tire air pressure), the load, and even the outside temperature. The frequency division ratio set according to the detected values is corrected by appropriately increasing or decreasing the frequency dividing ratio. The setting and correction of the reference value are performed at a predetermined number of times (10 times) or at a predetermined time, which will be described later.
[0028]
Next, the configuration of the integerizer 14 will be described. Note that the integerizer 14 is functionally shown as shown.
[0029]
The integerizer 14a divides a reference value set to 65.6 into an integer part 65 and 0.6 of the first decimal place (nth place) and outputs the result. , The outputted decimal number 0.6 is input and added, and when the added decimal value is equal to or more than an integer m, specifically, when it is 1 or more, a decimal part adder (1) is output as 1 (an integer m). Adding means) 14b, inputs the output integer part value 65, and when 1 (integer m) is output from the decimal part adder 14b, adds 1 (integer m) to the input integer part value 65. On the other hand, when 1 (integer m) is not output from the decimal part adder 14b, a frequency division ratio adder (output means) 14c that outputs the input integer part value 65 as it is is provided.
[0030]
The value obtained by adding the outputs of the frequency division ratio adder 14c at a predetermined number of times (10 times) is equal to the above-mentioned value 65.6 for the first decimal place (n-th place). The frequency divider divides the input signal from the rotation sensor 22 by using the output value as a frequency division ratio to generate an output signal, which is output to the PWM output circuit.
[0031]
FIG. 2 is an explanatory diagram showing the operation (operation) of the decimal part adder 14b and the division ratio adder 14c in the integerizer 14, and FIG. It is an explanatory view showing a value (frequency division ratio) output from a frequency ratio adder (14c) for a predetermined number of times (10 times). The output of the decimal part adder 14b is shown as SUMMOD, the output of the frequency division ratio adder 14c is shown as #FBKVSP, and the number of times is shown as i. In FIG. 2, the first decimal place is indicated as “, 10”.
[0032]
With this configuration, as shown in FIG. 3, when n = 1, the value (division ratio) output from the integer conversion unit 14 is 10 n times, that is, 66 out of 10 times is 6 Since the number of times is 65, this is 4 times, so that the total of the frequency division ratios of 10 times is 65.6. As a result, the frequency division ratio up to the first decimal place can be output accurately, and the desired accuracy can be obtained even when the input signal generation interval such as low wheel speed is long. Also, the configuration is simple.
[0033]
In this embodiment, the division ratio up to the nth decimal point, that is, the first place, is set. However, when the division ratio up to the second place is set as the nth decimal place, the value up to the two decimal places is set. At the time when it becomes 1 after the addition, the number of outputs corresponding to 10 n times (n = 2) times, that is, 100 outputs are added, so that the number of decimal places up to the second decimal place can be obtained. The division ratio can be output.
[0034]
The same applies to the case where n is 3 or more. Although the integer m is set to 1, it may be set to 2 or more if the value of the predetermined number of times is appropriately changed.
[0035]
Further, since the value of the dividing ratio to be set is configured to be corrected according to the operating environment or operating state of the rotation sensor 22, the operating environment or operating state, that is, wheel speed (vehicle speed), air pressure (tire air pressure), The frequency division ratio set by the frequency division ratio setting device 12 can be appropriately corrected in accordance with the load (loading load) and the outside air temperature, and the detection accuracy, particularly at low wheel speeds where the interval between input signals is long, can be further improved. Can be improved.
[0036]
FIG. 4 is a schematic diagram partially showing a frequency division ratio output device of a frequency divider according to a second embodiment of the present invention, which is similar to FIG. 1, and FIG. FIG. 3 is an explanatory diagram similar to FIG.
[0037]
In the device according to the second embodiment, the integerizer 14 d is a multiplier (integerizing means) 14 d that multiplies the set reference value 65.6 by 10 to the power of n and converts it to an integer of 656 and outputs the integer. Adder 14e that adds the converted value 656, a divider 14f that divides both the value obtained by the addition (SUMMOD) and the added value up to the previous time by the 10 n power, and obtains the difference. A subtractor (output means) 14g for outputting (#FBKVSP) is provided, and a value obtained by adding the outputs of the subtractor 14g at a predetermined number of times (10 times) is a value up to the first decimal place (nth place). 65.6. The frequency divider divides the input signal from the rotation sensor 22 by using the output value as a frequency division ratio to generate an output signal, which is output to the PWM output circuit. The remaining configuration is the same as in the first embodiment.
[0038]
With this configuration, as shown in FIG. 5, when the frequency division ratio is counted 10 times, the result is 65.6. As a result, similarly to the first embodiment, the frequency division ratio up to the first decimal place is accurately output. The desired accuracy can be obtained even at low wheel speeds. Also, the configuration is simple. In addition, also in the case of the n-th decimal point (n ≧ 2), the expected division ratio can be output by summing the outputs of 10 n (n ≧ 2) times, similarly to the first embodiment. is there.
[0039]
FIG. 6 is a schematic diagram partially showing a frequency division ratio output device of a frequency divider according to a third embodiment of the present invention, which is similar to FIG. 1, and FIG. FIG. 3 is an explanatory diagram similar to FIG.
[0040]
In the device according to the third embodiment, the integer digitizer 14 is a multiplier 14h (integerizing means) for multiplying the set reference value 65.6 by 10 to the power of n and converting it to an integer, and the integer is converted to an integer. An adder 14i for adding a remainder obtained by dividing the value previously converted to an integer by the n-th power to the value; a multiplier for dividing the obtained sum by the n-th power to output a quotient obtained thereby 14j (output means) so that the value obtained by adding the outputs of the divider 14j at a predetermined number of times (10 times) is equal to the above-mentioned value up to the first decimal place (n-th place) 65.6. did. The frequency divider divides the input signal from the rotation sensor 22 by using the output value as a frequency division ratio to generate an output signal, which is output to the PWM output circuit. The remaining configuration is the same as in the first embodiment.
[0041]
With this configuration, as shown in FIG. 7, when the division ratio is counted 10 times, the result is 65.6. As a result, similarly to the first embodiment, the division ratio up to the first decimal place is accurately output. The desired accuracy can be obtained even at low wheel speeds. Also, the configuration is simple. Also in the case of the nth decimal point (n ≧ 2), it is possible to output a predetermined frequency division ratio by adding outputs of 10 n (n ≧ 2), as in the first embodiment. .
[0042]
FIG. 8 is a schematic diagram similar to FIG. 1 showing a configuration of a frequency division ratio output device of a frequency divider according to a fourth embodiment of the present invention.
[0043]
As shown in the figure, in the fourth embodiment, 1 to 10 integer converters 14 corresponding to a predetermined number are provided, and the output #FBKVSP (output of the integer converter 14) at a predetermined number (10 times) is provided. Are obtained in advance, and are sequentially output.
[0044]
The fourth embodiment has an advantage that the configuration is simpler than that of the previous embodiment. Although the sensor group and the operating environment detector 16 are not shown in the fourth embodiment, they may be actually removed to further simplify the configuration, or a reference value to be set and left. May be corrected.
[0045]
As described above, in the first to fourth embodiments, a device for dividing the frequency of an input signal to generate a frequency-reduced frequency output signal and outputting the frequency division ratio of the frequency divider (frequency division ratio output device) In 10, reference value setting means (reference value setting device 12) for setting a reference value for calculating the frequency division ratio to a value 65.6 to the n-th decimal place, and setting the set reference value to an integer part 65. Division means (integer / decimal number divider 14a of integer digitizer 14) for dividing and outputting the result to the n-th decimal number 0.6, inputting and outputting the output decimal number, and adding the added decimal number to integer m When the value becomes the above value, the addition means (decimal part adder 14b of the integer generator 14) for outputting as an integer m, and the value of the output integer part are input, and the integer m is output from the decimal addition means. While adding the integer m to the value of the input integer part When the integer m is not output from the decimal addition means, output means (division ratio adder 14c of the integer digitizer 14) for directly outputting the value of the input integer part is provided, and the output value is divided by the The output signal is generated by dividing the input signal as a frequency ratio.
[0046]
Further, in a device (division ratio output device) 10 for dividing the frequency of the input signal to generate an output signal having a reduced frequency, a frequency division ratio output device 10 for calculating the frequency division ratio is provided. A reference value setting unit (reference value setting unit 12) for setting a reference value to a value up to n decimal places, and an integer conversion unit (integerization) for multiplying the set division ratio by 10 to the power of n and converting it to an integer for output Multiplier 14d) and an output means (integer) that divides both the value obtained by adding the integer value and the added value up to the previous time by the 10 nth power and outputs the difference. And an adder 14e, a divider 14f, and a subtractor 14g) of the rectifier 14, and the output signal is generated by dividing the input signal by using the output value as the division ratio.
[0047]
Further, in a device (division ratio output device) 10 for dividing the frequency of the input signal to generate an output signal having a reduced frequency, a frequency division ratio output device 10 for calculating the frequency division ratio is provided. A reference value setting means (reference value setting device 12) for setting the reference value to a value up to n decimal places, and an integer conversion means (integerization device 14) for multiplying the set reference value by 10 to the power of n and converting it to an integer. A multiplier 14h), and a remainder obtained by dividing the previously integer-converted value by the 10 n power to the integer-converted value, and dividing the obtained sum by the 10 n power; Output means for outputting the obtained quotient (adder 14i and divider 14j of integer convertor 14), and dividing the input signal by using the output value as the division ratio to generate the output signal It was configured as follows.
[0048]
Also, the output #FBKVSP of the output means (such as the integer digitizer 14 division ratio adder 14c) is determined in advance for a predetermined number of times (10 times) and is sequentially output.
[0049]
Further, the reference value setting means is configured to correct the set reference value according to an operating environment or an operating state of a device (rotation sensor 22) that generates the input signal.
[0050]
Although the present invention has been described by taking as an example a case where the output of the rotation sensor 22 is divided in a vehicle speedometer (wheel speed signal), the present invention is not limited to this, and the frequency of the periodic input signal is not limited thereto. Any frequency divider can be used.
[0051]
【The invention's effect】
According to the first aspect of the present invention, it is possible to accurately output the division ratio below the decimal point while having a simple configuration, and to divide the input signal by the output division ratio to detect the expected value. Accuracy can be obtained. Thereby, for example, even when the interval between the occurrences of the input signal, which greatly affects the detection accuracy of the frequency division ratio, is long, the error can be minimized, and the desired detection accuracy can be obtained.
[0052]
According to the second aspect of the present invention, the division ratio of the decimal point or less can be output accurately, and the input signal is divided by the output division ratio. Phase detection accuracy can be obtained. Thereby, for example, even when the interval between the occurrences of the input signal, which greatly affects the detection accuracy of the frequency division ratio, is long, the error can be minimized, and the desired detection accuracy can be obtained.
[0053]
According to the third aspect of the present invention, it is possible to accurately output the division ratio below the decimal point while having a simple configuration, and to divide the input signal by the output division ratio. Phase detection accuracy can be obtained. Thus, for example, even when the interval between the occurrences of the input signal, which greatly affects the detection accuracy of the frequency division ratio, is long, the error can be minimized, and the desired detection accuracy can be obtained.
[0054]
According to the fourth aspect, in addition to the above-described effects, the configuration can be further simplified.
[0055]
According to the present invention, in an apparatus for generating an input signal, such as a rotation sensor, an operation environment or an operation in which the generation interval of the input signal is long, in other words, the influence of the frequency division ratio on the detection accuracy becomes large. In the state, the error can be minimized by appropriately correcting the reference value for calculating the frequency division ratio, and desired detection accuracy can be obtained.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an entire configuration of a frequency division ratio output device of a frequency divider according to one embodiment of the present invention.
FIG. 2 is an explanatory diagram showing an operation (operation) of an integerizer (more specifically, a decimal part adder and a division ratio adder therein) in the device shown in FIG. 1;
FIG. 3 is an explanatory diagram showing a value (frequency division ratio) output from an integer generator (more specifically, a frequency division ratio adder) shown in FIG. 2 over a predetermined number of times (10 times).
FIG. 4 is a schematic diagram partially similar to FIG. 1, showing a frequency division ratio output device of a frequency divider according to a second embodiment of the present invention.
FIG. 5 is an explanatory diagram similar to FIG. 2, showing the operation (operation) of the integer generator of the device shown in FIG. 4;
FIG. 6 is a schematic diagram partially similar to FIG. 1, showing a frequency division ratio output device of a frequency divider according to a third embodiment of the present invention.
FIG. 7 is an explanatory diagram similar to FIG. 2, showing the operation (operation) of the integer generator of the device shown in FIG. 6;
FIG. 8 is a schematic diagram similar to FIG. 1, showing a frequency division ratio output device of a frequency divider according to a fourth embodiment of the present invention.
[Explanation of symbols]
10 division ratio output device 12 reference value setting device (reference value setting means)
14 Integer (output means, etc.)
16 Operating environment detector 22 Rotation sensor (input signal generation device)
26 pulse counter 30 comparator 32 PWM output circuit

Claims (5)

In a device that outputs a frequency division ratio of a frequency divider that generates an output signal having a frequency reduced by dividing the frequency of an input signal, a reference value for calculating the frequency division ratio is set to a value up to n decimal places. Reference value setting means for setting, dividing means for dividing the set reference value into an integer part and the n-th decimal place and outputting the same, inputting and adding the outputted decimal number, and the added decimal number is an integer When the value becomes equal to or more than m, the addition means for outputting as an integer m, and the value of the output integer part are input, and when the integer m is output from the decimal addition means, the integer m is input. While adding to the value of the integer part, when the integer m is not output from the decimal number addition means, output means for directly outputting the value of the input integer part is provided, and the output value is used as the frequency division ratio. Divides the input signal and divides the output signal Dividing ratio output device of the frequency divider, characterized in that adapted to generate a. In a device that outputs a frequency division ratio of a frequency divider that generates an output signal having a frequency reduced by dividing the frequency of an input signal, a reference value for calculating the frequency division ratio is set to a value up to n decimal places. A reference value setting means for setting, an integer conversion means for multiplying the set reference value by 10 to the power of n to obtain an integer, and both a value obtained by adding the integer value and an added value up to the previous time Is output by dividing the input signal by using the output value as the frequency division ratio and generating the output signal. A frequency division ratio output device for a frequency divider. In a device that outputs a frequency division ratio of a frequency divider that generates an output signal having a frequency reduced by dividing the frequency of an input signal, a reference value for calculating the frequency division ratio is set to a value up to n decimal places. A reference value setting means for setting, an integer conversion means for multiplying the set reference value by 10 to the power of n and converting the value to an integer, and a value previously converted to an integer by the power of 10 to the power of 10 Output means for adding the remainder of the division, dividing the obtained sum by the 10 nth power, and outputting the quotient thus obtained, and dividing the input signal by using the output value as the frequency division ratio. A frequency dividing ratio output device for a frequency divider, wherein the frequency dividing circuit generates the output signal. 4. The frequency division ratio output device for a frequency divider according to claim 1, wherein an output of said output means is obtained in advance for a predetermined number of times and sequentially output. The frequency divider according to claim 1, wherein the reference value setting unit corrects the set reference value according to an operating environment of a device that generates the input signal. Division ratio output device.

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