WO2007123056A1 - 特性取得装置、方法およびプログラム - Google Patents
特性取得装置、方法およびプログラム Download PDFInfo
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- WO2007123056A1 WO2007123056A1 PCT/JP2007/058122 JP2007058122W WO2007123056A1 WO 2007123056 A1 WO2007123056 A1 WO 2007123056A1 JP 2007058122 W JP2007058122 W JP 2007058122W WO 2007123056 A1 WO2007123056 A1 WO 2007123056A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/10—Calibration or testing
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
Definitions
- the present invention relates to a correction between a balance between two signals generated by a signal generator and a paddy balance between two signals received by a digitizer to be processed.
- an amplitude error and a phase error are generated during sampling between a plurality of A / D converters used in a digitizer (for example, Japanese Patent Laid-Open No. 2 0 02-2 4 6 9 1 (See the summary issue of issue 0). It is known that this also causes amplitude errors and phase errors between multiple D ZA converters used in signal generators such as AWG (Arbitrary Waveform Generator). ing. Accordingly, an object of the present invention is to reduce errors that occur between a plurality of A / D conversion paths or between a plurality of D / A conversion paths. .
- a first characteristic acquisition apparatus is a characteristic acquisition apparatus that receives patterns from an analog pattern generation apparatus and a digital pattern acquisition apparatus and acquires characteristics of the analog pattern generation apparatus.
- the above-mentioned analog port pattern generator converts the first input digital pattern into the first output analog pattern, and converts the second input digital pattern into the second output analog pattern.
- the digital pattern acquisition device converts an input analog pattern into an output digital pattern.
- the characteristic acquisition device has the first input digital pattern, and the input analog pattern has the first analog pattern.
- First transfer characteristic deriving means for deriving a first transfer characteristic to be converted to the output digital pattern when the output is an analog pattern
- Second transfer characteristic deriving means for deriving a second transfer characteristic for converting the second input digital pattern into the output digital pattern when the input analog pattern is the second output analog pattern
- a transmission characteristic ratio deriving unit for deriving a transmission characteristic ratio that is a ratio between the first transmission characteristic and the second transmission characteristic
- a characteristic acquisition device is provided that receives patterns from an analog pattern generation device and a digital pattern acquisition device and acquires the characteristics of the analog pattern generation device.
- the analog pattern generation device converts the first input digital pattern into the first output analog pattern, and the second input digital pattern. Is converted into a second output analog pattern.
- the digital pattern acquisition device converts an input analog pattern into an output digital pattern.
- the characteristic acquisition device includes a first transfer characteristic deriving unit, a second transfer characteristic deriving unit, and a transfer characteristic ratio deriving unit.
- the first transfer characteristic deriving means derives a first transfer characteristic for converting the first input digital pattern into the output digital pattern when the input analog pattern is the first output analog pattern.
- the second transfer characteristic deriving means derives a second transfer characteristic for converting the second input digital pattern into the output digital pattern when the input analog pattern is the second output analog pattern.
- the transmission characteristic ratio deriving unit derives a transmission characteristic ratio that is a ratio of the first transmission characteristic and the second transmission characteristic.
- the first characteristic acquisition device multiplies the first generation-side transmission characteristic that converts the first input digital pattern into the first output analog pattern by the transmission characteristic ratio. Then, a transfer characteristic deriving unit for deriving a second generation-side transfer characteristic for converting the second input digital pattern into the second output analog pattern may be provided.
- a second characteristic acquisition device is a characteristic acquisition device that receives patterns from an analog pattern generation device and a digital pattern acquisition device, and acquires the characteristics of the digital pattern acquisition device. (1) The digital filter generation device converts the input digital pattern into an output analog pattern. (2) The digital pattern acquisition device converts the first input analog pattern into the first output digital pattern. And converting the second input analog pattern into a second output digital pattern.
- the characteristic acquisition device converts the input digital pattern into the first input analog pattern into the output analog pattern.
- a first transfer characteristic deriving means for deriving a first transfer characteristic to be converted to the first output digital pattern, and the input digital pattern when the second input analog pattern is the output analog pattern.
- Second transmission characteristic deriving means for deriving a second transmission characteristic to be converted into the second output digital pattern, and the first transmission characteristic.
- Ru is configured to include a transmission characteristic ratio deriving means for deriving a transmission characteristic ratio which is a ratio relating to the second transmission characteristic with.
- the analog pattern generation device converts an input digital pattern into an output analog pattern.
- the digital pattern acquisition device converts a first input analog pattern into a first output digital pattern and converts a second input analog pattern into a second output digital pattern.
- the characteristic acquisition device includes a first transfer characteristic deriving unit, a second transfer characteristic deriving unit, and a transfer characteristic ratio deriving unit.
- the first transfer characteristic deriving unit derives a first transfer characteristic for converting the input digital pattern into the first output digital pattern when the first input analog pattern is the output analog pattern.
- the second transfer characteristic deriving means converts the input digital pattern into the second output digital pattern when the second input analog pattern is the output analog pattern. Is derived.
- the transmission characteristic ratio deriving unit derives a transmission characteristic ratio that is a ratio of the first transmission characteristic and the second transmission characteristic. Further, the second characteristic acquisition device according to the present invention multiplies the first acquisition-side transmission characteristic that converts the first input analog pattern into the first output digital pattern by the transfer characteristic ratio. Then, a transfer characteristic deriving unit for deriving a second acquisition-side transfer characteristic for converting the second input analog pattern into the second output digital pattern may be provided.
- a third characteristic acquisition device receives a pattern from an analog pattern generation device and a digital pattern acquisition device, and has a delay characteristic in a transmission path from the analog pattern generation device to the digital pattern acquisition device.
- the analog pattern generation device converts a first input digital pattern into a first output analog pattern, and converts a second input digital pattern into a second output analog pattern.
- the digital pattern acquisition device converts a first input analog pattern into a first output digital pattern;
- the characteristic acquisition device converts the first input digital pattern, and the first input analog pattern is the first output analog pattern.
- First straight transmission characteristic deriving means for deriving a first straight transmission characteristic to be converted to the first output digital pattern when the first input digital pattern is used, and the second input analog pattern is the first input digital pattern.
- a first cross transfer characteristic deriving means for deriving a first cross transfer characteristic to be converted to the second output digital pattern when the output pattern is a single output analog pattern, the second input digital pattern, and the second input analog pattern being Second straight transmission to convert to the second output digital pattern when it is the second output analog pattern
- the second varnish transfer characteristic deriving means for deriving the characteristics and the second input digital pattern into the first output digital pattern when the first input analog pattern is the second output analog pattern.
- a second cross transmission characteristic deriving means for deriving a second cross transmission characteristic to be converted, and the first straight transmission characteristic, the first cross transmission characteristic, the first varnish transfer characteristic, and the second cross transmission characteristic.
- delay characteristic deriving means for deriving the delay characteristic.
- a pattern is received from the analog pattern generation device and the digital pattern acquisition device, and the analog pattern generation device to the digital pattern acquisition device.
- a characteristic acquisition device for acquiring the delay characteristic in the transmission path is provided.
- the analog pattern generation device converts the first input digital pattern into the first output analog pattern, and the second input digital pattern. Is converted into a second output analog pattern.
- the digital pattern acquisition device converts a first input analog pattern into a first output digital pattern and converts a second input analog pattern into a second output digital pattern.
- the characteristic acquisition device includes a first straight transmission characteristic deriving unit, a first cross transmission characteristic deriving unit, a second straight transmission characteristic deriving unit, a second cross transmission characteristic deriving unit, and a delay Characteristic derivation means.
- the first straight transfer characteristic deriving means converts the first input digital pattern into the first output digital pattern when the first input analog pattern is the first output analog pattern.
- the first transfer characteristic is derived.
- the first cross transfer characteristic deriving means converts the first input digital pattern into the second output digital pattern when the second input analog pattern is the first output analog pattern. Is derived.
- the second straight transfer characteristic deriving means converts the second input digital pattern into the second output digital pattern when the second input analog pattern is the second output analog pattern. Derived the nitrite transfer characteristics.
- the second cross transfer characteristic deriving means, the second input digital pattern, A second cross transmission characteristic for converting to the first output digital pattern when the first input analog pattern is the second output analog pattern is derived.
- the delay characteristic deriving means derives the delay characteristic based on the first straight transmission characteristic, the first cross transmission characteristic, the second straight transmission characteristic, and the second cross transmission characteristic.
- the third characteristic acquisition device provides a generation-side transmission characteristic that derives a generation-side transmission characteristic ratio obtained by dividing the second cross transmission characteristic by a product of the first straight transmission characteristic and the delay characteristic. Ratio derivation means may be provided. Further, the third characteristic acquisition device according to the present invention provides the generation-side transfer characteristic ratio to the first generation-side transfer characteristic that converts the first input digital pattern into the first output analog pattern.
- a generation-side transfer characteristic deriving unit that multiplies and derives a second generation-side transfer characteristic that converts the second input digital pattern into the second output analog pattern may be provided.
- the third characteristic acquisition device provides an acquisition-side transfer characteristic that derives an acquisition-side transfer characteristic ratio obtained by dividing the first cross transfer characteristic by the product of the first straight transfer characteristic and the delay characteristic.
- the third characteristic acquisition device may include a first acquisition side transmission that converts the first input analog pattern into the first output digital pattern.
- An acquisition-side transfer characteristic deriving unit for deriving a second acquisition-side transfer characteristic for converting the second input analog pattern into the second output digital pattern by multiplying the transmission characteristic by the acquisition-side transfer characteristic ratio; Good.
- the present invention relates to a characteristic acquisition method for receiving a pattern from an analog pattern generation device and a digital pattern acquisition device and acquiring the characteristics of the analog pattern generation device.
- the analog pattern generation device is a first input digital The pattern is converted to the first output analog pattern, and the second input digital pattern is converted to the second output analog pattern.
- the digital pattern acquisition device outputs the input analog pattern to the output digital.
- the characteristic acquisition method is configured to convert the first input digital pattern to the output digital pattern when the input analog pattern is the first output analog pattern.
- a first transfer characteristic deriving step for deriving a first transfer characteristic to be converted into a turn, and the second input digital pattern A second transfer characteristic deriving step for deriving a second transfer characteristic to be converted to the output digital pattern when the input analog pattern is the second output analog pattern, the first transfer characteristic and the second transfer
- the characteristic acquisition method includes a transfer characteristic ratio deriving step for deriving a transfer characteristic ratio that is a ratio to the characteristic.
- the present invention relates to a characteristic acquisition method for receiving a pattern from an analog output unit and a digital image acquisition device and acquiring characteristics of the digital image acquisition device. 1) The analog pattern generation device converts an input digital pattern into an output analog pattern. (2) The digital pattern acquisition device converts a first input analog pattern into a first output digital pattern.
- the characteristic acquisition method is configured to convert the input digital pattern into the first input analog pattern and the first input analog pattern into the first output analog pattern.
- a first transfer characteristic deriving step for deriving a first transfer characteristic to be converted into an output digital pattern, and the input digital pattern as the second output digital pattern when the second input analog pattern is the output analog pattern.
- a characteristic acquisition comprising: a second transfer characteristic deriving step for deriving a second transfer characteristic to be converted; and a transfer characteristic ratio deriving step for deriving a transfer characteristic ratio that is a ratio of the first transfer characteristic and the second transfer characteristic Is the method.
- the present invention is a characteristic acquisition method for receiving a pattern from an analog pattern generation device and a digital pattern acquisition device, and acquiring a delay characteristic in a transmission path from the analog pattern generation device to the digital pattern acquisition device, (1)
- the analog pattern generation device converts a first input digital pattern into a first output analog pattern, and converts a second input digital pattern into a second output analog pattern.
- the digital pattern acquisition device converts a first input analog pattern into a first output digital pattern, and converts a second input analog pattern into a second output digital pattern.
- the characteristic acquisition method includes: The first input analog pattern is the first output analog pattern.
- a first straight transmission characteristic deriving step for deriving a first straight transmission characteristic to be converted into the first output digit pattern at a certain time, and the second input analog pattern is the first input digital pattern.
- a first cross transfer characteristic deriving step for deriving a first cross transfer characteristic to be converted to the second output digital pattern when the output pattern is a first output analog pattern;
- a first varnish transfer characteristic deriving step for deriving a second varnish transfer characteristic for converting a turn into the second output digital pattern when the second input analog pattern is the second output analog pattern;
- a second cross transfer characteristic is derived for converting the second input digital pattern into the first output digital pattern when the first input analog pattern is the second output analog pattern.
- the analog pattern generation device converts a first input digital pattern into a first output analog pattern, and converts a second input digital pattern into a second output analog pattern.
- the digital signal pattern acquisition device converts an input analog pattern into an output digital pattern, wherein the first input digital pattern is converted to the first output analog pattern.
- the transmission characteristic ratio deriving process for deriving the transmission characteristic ratio, which is the ratio with the second transfer characteristic, is executed by a computer.
- the present invention is a program for receiving a pattern from an analog pattern generation device and a digital pattern acquisition device, and causing a computer to execute a characteristic acquisition process for acquiring characteristics of the digital pattern acquisition device.
- An analog pattern generation device converts an input digital pattern into an output analog pattern.
- the digital pattern acquisition device converts a first input analog pattern into a first output digital pattern, and a second input An analog pattern is converted to a second output digital pattern, and the input digital pattern is converted to the first output digital pattern when the first input analog pattern is the output analog pattern.
- a first transfer characteristic deriving process for deriving a transfer characteristic; and the input digital A second transfer characteristic deriving process for deriving a second transfer characteristic for converting a turn into the second output digital pattern when the second input analog pattern is the output analog pattern; and the first transfer characteristic Is a program for causing a computer to execute a transfer characteristic ratio deriving process for deriving a transfer characteristic ratio, which is a ratio between the first transfer characteristic and the second transfer characteristic.
- the present invention causes a computer to execute a characteristic acquisition process that receives a pattern from an analog pattern generation device and a digital pattern acquisition device, and acquires a delay characteristic in a transmission path from the analog pattern generation device to the digital pattern acquisition device.
- the analog pattern generation device converts a first input digital pattern into a first output analog pattern, and converts a second input digital pattern into a second output analog pattern.
- Digital A pattern acquisition device converts a first input analog pattern into a first output digital pattern, and converts a second input analog pattern into a second output digital pattern.
- a first straight transmission characteristic deriving process for deriving a first straight transmission characteristic to be converted to the first output digital pattern when the first input analog pattern is the first output analog pattern;
- a first cross transfer characteristic deriving process for deriving a first cross transfer characteristic for converting the first pattern into the second output digital pattern when the second input analog pattern is the first output analog pattern;
- the second input digital pattern is the second input analog pattern is the second output analog pattern.
- a second cross transmission characteristic deriving process for deriving a second cross transmission characteristic to be converted into the first output digital pattern when the output analog pattern is an output, the first straight transmission characteristic, and the first cross transmission
- a delay characteristic deriving process for deriving the delay characteristic based on the characteristics, the first cross transfer characteristic, and the second cross transfer characteristic.
- FIG. 1 is a block diagram showing a configuration of an arbitrary signal generator (analog pattern generation device) 2 according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing a configuration of a digitizer (digital pattern acquisition device) 4 according to the embodiment of the present invention.
- FIG. 3 is a block diagram showing the configuration of the characteristic acquisition device 1 according to the first embodiment.
- FIG. 4 is a diagram for explaining the operation of the characteristic acquisition device 1 according to the first embodiment when the first output terminal 29 I and the first input terminal 41 I are connected. .
- FIG. 5 is a diagram for explaining the operation of the characteristic acquisition device 1 according to the first embodiment when the second output terminal 29 Q and the first input terminal 4 1 I are connected. .
- FIG. 6 is a block diagram showing a configuration of the characteristic acquisition device 1 according to the second embodiment.
- FIG. 7 is a diagram for explaining the operation of the characteristic acquisition device 1 according to the second embodiment when the first output terminal 29 I and the first input terminal 41 I are connected. .
- FIG. 8 is a diagram for explaining the operation of the characteristic acquisition device 1 according to the second embodiment when the first output terminal 29 I and the second input terminal 41 Q are connected. .
- FIG. 9 is a block diagram showing the configuration of the characteristic acquisition device 1 according to the third embodiment.
- FIG. 10 shows the third output when the first output terminal 2 9 1 (second output terminal 2 9 Q) and the first input terminal 4 1 I (second input terminal 4 1 Q) are connected. It is a figure for demonstrating operation
- Fig. 11 shows the third case where the first output terminal 29 I (second output terminal 29 Q) and the second input terminal 41Q (first input terminal 4 II) are connected. It is a figure for demonstrating operation
- FIG. 1 is a block diagram showing a configuration of an arbitrary signal generator (analog pattern generation device) 2 according to an embodiment of the present invention.
- Arbitrary Waveform Generator (AWG) 2 is the first input digital pattern generator 2 2 I, the first D ZA comparator 2 4 1, the first output amplifier 2 6 I, the first output Fill evening 2 8 1, 1st output terminal 2 9 I, 2nd input digital pattern generator 2 2 Q, 2nd D ZA comparator 2 4 Q, 2nd output amplifier 2 6 Q, 2nd output fill 2 8 Q, 2nd output terminal 2 9 Q provided o
- First input digital pattern generator 2 2 I generates a digital pattern (referred to as “first input digital pattern”).
- the first D ZA converter 2 4 I converts the first input digital pattern into an analog signal.
- the first output amplifier 26 I increases the output of the first D / A comparator 24 I.
- the first output filter 28 I fills the output of the first output amplifier 26 I (for example, cuts high frequency components and passes low frequency components)
- the first output amplifier 26 I and the first output filter 26 I are examples of circuits for analog processing of the output of the first D / A converter 24 1, and other well-known analog processing It may be replaced with a circuit.
- the first output terminal 29 I outputs the output of the first output filter 28 I (referred to as “first output analog pattern”).
- the frequency characteristics of the first DZA converter 2 41, the first output amplifier 2 6 I, and the first output filter 2 8 I are expressed as S parameters, and H A .i (f). However, f is the frequency, and the description (f) means that it is expressed in the frequency domain.
- H A .i (f) is measured in advance and recorded in the first input digital pattern generation unit 2 2 I.
- the first input digital pattern generator 2 2 I has a correction function. Use the correction function of the first input digital pattern generator 2 2 I (output H S i (f) / H A .i (f)) or do not (Hsi ( Output f)) is also optional ⁇ ⁇ .
- First input digital pattern generator 2 1 I The first pattern is converted to the first output analog pattern by the first D / A converter 2 4 1, the first output amplifier 2 6 I and the first output filter 2 8 I. The first output analog pattern is output from the first output terminal 29 I.
- the second input digital pattern generator 2 2 Q generates a digital pattern (referred to as “second input digital pattern”).
- the second D ZA converter 2 4 Q converts the second input digital pattern into an analog signal.
- the second output amplifier 26 Q amplifies the output of the second D / A converter 24 Q.
- the second output filter 28 Q fills the output of the second output amplifier 26 Q (for example, applies high-frequency components and passes low-frequency components).
- the second output amplifier 26 Q and the second output filter 28 Q are examples of circuits for analog processing of the output of the second D / A comparator 24 Q. It may be replaced with an analog processing circuit.
- the second output terminal 29 Q outputs the output of the second output filter 28 Q (referred to as “second output analog pattern”).
- the second A comparator overnight 2 4 Q, the second output amplifier 2 6 Q and The frequency characteristics of the 2nd output filter 2 8 Q are expressed as S parameter and H A -Q (f).
- H A .Q (f) is measured in advance and recorded in the second input digital pattern generator 2 2 Q.
- the second input digital pattern generator 2 2 Q has a correction function.
- 2nd input digital pattern generator 2 2 Use Q correction function (output H SQ (f) / H A -Q (f)) or not (output H S Q (f)) Is also optional.
- 2nd input digital pattern generator 2 2 Q generates the 2nd input digital pattern by 2nd D ZA comparator 2 4 Q, 2nd output amplifier 2 6 Q and 2nd output filter 2 8 Q , Converted to the second output analog pattern.
- the second output analog pattern is output from the second output terminal 29 Q.
- FIG. 2 is a block diagram showing a configuration of a digitizer (digital pattern acquisition apparatus) 4 according to the embodiment of the present invention.
- Digitizer 4 has first input terminal 4 1 I, first output digital pattern acquisition unit 4 2 I, first A / D comparator 4 4 1, first input amplifier 4 6 I, first input filter 4 8 I, 2nd input terminal 4 1 Q, 2nd output digital pattern acquisition part 4 2 Q, 2nd A / D converter 4 4 Q, 2nd input Amplifier 4 6 Q, 2nd input filter 4 8 Q Is provided.
- First input terminal 4 1 I receives analog signal (referred to as “first input analog pattern”) ® input.
- the first input amplifier 4 6 I amplifies the first input analog pattern.
- the first input filter 48 1 I performs fill processing on the first input amplifier 4 6 I (eg, cuts the high frequency component and passes the low frequency component).
- the first input amplifier 46 I and the first input filter 48 I are examples of circuits for analog processing of the first input analog pattern. These may be replaced with other known analog processing circuits.
- the first A / D converter 4 4 I converts the output of the first input filter 4 8 1 into a digital signal (referred to as “first output digital pattern”).
- the first output digital pattern acquisition unit 4 2 I acquires the first output digital pattern from the first AZD converter 4 4.
- the frequency characteristics of the first input amplifier 4 6 I, the first input filter 4 8 I, and the first AZ D comparator 4 4 I are expressed as S parameters, and H D -i (f).
- H D .i (f) is measured in advance and recorded in the first output digital pattern acquisition unit 4 2 I.
- H D i (f) outputs the first input analog pattern first.
- the first output digital pattern acquisition unit 4 2 I is set to H D i (f) / H D .i (f ) As the first output 5 digital pattern.
- Hmtf HD. X HD.itf HDI (£)) O
- the first output digital pattern acquisition unit 4 2 I Has a correction function. Note that the first output digital pattern acquisition unit 4 2 I uses the correction function (acquires H DI (f) / H D i (f)) or does not (determine H DI (f)). 0) is also optional.
- the first input analog pattern received by the first input terminal 4 1 I is the first output digital pattern by the first input amplifier 4 6 I, the first input filter 4 8 I and the first AZD comparator 4 4 I. Is converted to
- the second input terminal 4 1 Q receives an analog signal (referred to as “second input analog pattern”).
- the second input amplifier 4 6 Q amplifies the second input analog pattern. 0
- the second input filter 48 Q filters the second input amplifier 46 Q (for example, cuts the high frequency component and passes the low frequency component).
- the second input amplifier 4 6 Q and the second input filter 4 8 Q are examples of circuits for analog processing of the second input analog pattern, and may be replaced with other known analog processing circuits. .
- the second AZD converter 4 Q converts the output of the second input filter 48 Q into a digital signal (referred to as “second output digital pattern”).
- the second output digital pattern acquisition unit 4 2 Q acquires the second output digital pattern from the second A / D comparator overnight 4 Q.
- the frequency characteristics of the second input amplifier 4 6 Q, the second input filter 4 8 Q, and the second A / D comparator 4 4 Q are expressed as S parameters, and H D .Q (f). H D. Q (f) is measured in advance and recorded in the second output digital pattern acquisition unit 4 2 Q.
- H D .Q (f) is a second acquisition-side transfer characteristic for converting the second input analog pattern into the second output digital pattern.
- the second output digital pattern acquisition unit 4 2 Q has a correction function.
- the second output digital pattern acquisition unit 4 2 Q correction function H DQ (f) / H D .Q (f) is acquired) or not (H DQ (f) is acquired) ) Is also optional.
- the second input analog pattern received by the second input terminal 4 1 Q is the second output digital by the second input amplifier 4 6 Q, the second input filter 4 8 Q and the second A / D converter 4 4 Q Converted to a pattern.
- the characteristic acquisition device 1 is different in each embodiment of the present invention. Hereinafter, the characteristic acquisition device 1 will be described.
- FIG. 3 is a block diagram showing the configuration of the characteristic acquisition apparatus 1 according to the first embodiment.
- the characteristic acquisition device 1 according to the first embodiment is connected to an arbitrary signal generator (analog pattern generation device) 2 and a digitizer (digital pattern acquisition device) 4. Further, the characteristic acquisition device 1 acquires the characteristic of the arbitrary signal generator 2.
- the characteristic acquisition device 1 according to the first embodiment includes a first transfer characteristic deriving unit 12, a second transfer characteristic deriving unit 14, a transfer characteristic ratio deriving unit 16, and a transfer characteristic deriving unit 18.
- the first transfer characteristic deriving unit 1 2 operates when the first output terminal 2 9 1 and the first input terminal 4 1 I are connected.
- the first transfer characteristic deriving unit 12 receives the first input digital pattern from the first input digital pattern generation unit 2 2 I (not using the correction function) of the arbitrary signal generator 2.
- the first transfer characteristic deriving unit 12 receives the first output digital pattern from the first output digital pattern acquisition unit 4 2 1 (not using the correction function) of the digitizer 4.
- This first output digital pattern can be said to be a signal when the first input analog pattern (see Fig. 2) is the first output analog pattern (see Fig. 1).
- the first transfer characteristic deriving unit 12 derives a first transfer characteristic for converting the first input digital pattern into the first output digital pattern.
- the second transfer characteristic deriving unit 14 operates when the second output terminal 29 Q and the first input terminal 41 I are connected.
- the second transfer characteristic deriving unit 14 receives the second input digital pattern from the second input digital pattern generating unit 2 2 Q (not using the correction function) of the arbitrary signal generator 2.
- the second transfer characteristic deriving unit 14 receives the first output digital pattern from the first output digital pattern acquisition unit 4 2 1 (not using the correction function) of the digitizer 4.
- This first output digital pattern can be said to be a signal when the first input analog pattern (see Fig. 2) is the second output analog pattern (see Fig. 1).
- the second transfer characteristic deriving unit 14 derives a second transfer characteristic for converting the second input digital pattern into the first output digital pattern.
- the transfer characteristic ratio deriving unit 16 receives the first transfer characteristic from the first transfer characteristic deriving unit 12 and receives the second transfer characteristic from the second transfer characteristic deriving unit 14.
- the transfer characteristic ratio deriving unit 16 derives a transfer characteristic ratio which is a ratio between the first transfer characteristic and the second transfer characteristic.
- the transfer characteristic ratio is the characteristic of the arbitrary signal generator 2.
- the transfer characteristic deriving unit 18 multiplies the first generation-side transfer characteristic IL f) by the transfer characteristic ratio derived by the transfer characteristic ratio deriving unit 16 to obtain the second generation-side transfer characteristic H A .Q (f ) Is derived.
- the second generation side transfer characteristic H A .Q (f) is given to the second input digital pattern generation unit 2 2 Q, and when the correction function of the second input digital pattern generation unit 2 2 Q is used. Used.
- the operation of the first embodiment will be described. First, the first output terminal 29 I and the first input terminal 41 I are connected.
- the first input digital pattern generation unit 2 2 I of the arbitrary signal generator 2 outputs the first input digital pattern Hsi (f). Since the correction function of the first input digital pattern generation unit 2 2 I is not used, H SI (f) / H A .i (f) is not output.
- the first input digital pattern H S i (f) is converted to the first output analog pattern by the first DZA comparator 2 4 1, the first output amplifier 2 6 I and the first output filter 2 8 I.
- the first output analog pattern is represented as Hsi (f) XH A -i (f).
- the first output analog pattern is output from the first output terminal 29 I and input to the first input terminal 4 1 I of the digitizer 4 as the first input analog pattern.
- the first input analog pattern is converted to the first output digital pattern by the first input amplifier 4 61, the first input filter 4 8 I and the first A / D converter 4 4 1.
- the first output digital pattern Hm (f) is expressed as Hsi (f) XH A -i (f) x H D .i (f).
- the first output digital pattern acquisition unit 4 2 I acquires the first output digital pattern HSIO X HA.I ⁇ X HD. ⁇ ).
- the first output digital pattern acquisition unit 4 2 I correction function is used.
- the first output digital pattern acquisition unit 4 2 I does not divide the output of the first AZD converter 4 4 1 by Hi i (f).
- FIG. 5 is a diagram for explaining the operation of the characteristic acquisition device 1 according to the first embodiment when the second output terminal 29 Q and the first input terminal 4 1 I are connected.
- the second input digital pattern generator 2 2 Q of the arbitrary signal generator 2 outputs the second input digital pattern H SQ (f).
- H SQ (f) / H A .Q (f) is not output.
- the second input digital pattern H S Q (f) is the second! ) / A Converter 2 4 Q, 2nd output amplifier 2 6 Q, and 2nd output filter 2 28 Q convert to 2nd output analog pattern.
- the second output analog pattern is Hsq (f) XH AQ (f).
- the second output analog pattern is output from the second output terminal 29 Q and input to the first input terminal 4 1 I of the digitizer 4 as the first input analog pattern.
- the first input analog pattern is converted to the first output digital pattern by the first input amplifier 4 61, the first input filter 4 8 I, and the first A / D comparator 4 4 I.
- the first output digital pattern Hm (f) is expressed as H S Q (f) xH A .Q (f) XH D .i (f).
- the first output digital pattern acquisition unit 4 2 I acquires the first output digital pattern H S Q (f) ⁇ H A .Q (f) ⁇ H D ⁇ i (f). Since the 1st output digital pattern acquisition unit 4 2 I correction function is not used, dividing the 1st AZD Comparator 4 4 I output by H D -i (f) Part 4 2 I does not.
- the second transfer characteristic deriving unit 14 receives the second input digital pattern H S Q (f) from the second input digital pattern generation unit 2 2 Q, and receives the first output from the first output digital pattern acquisition unit 4 2 I.
- the transfer characteristic ratio deriving unit 16 receives the first transfer characteristic H n (f) from the first transfer characteristic deriving unit 12 and the second transfer characteristic deriving unit 14 from the second transfer characteristic H QI (f).
- the second transfer characteristic HQI () H A - Q (f) xH D .i (f)
- the first transfer characteristic H n (f) H A -i (f) x H D .i Since (f), the transfer characteristic ratio is It becomes.
- the transfer characteristic deriving unit 18 receives the transfer characteristic ratio from the transfer characteristic ratio deriving unit 16.
- the transfer characteristic deriving unit 18 records the first generation-side transfer characteristic IL (f). Furthermore, the transfer characteristic deriving unit 18 adds the transfer characteristic ratio H A .Q (f) 0 ⁇ ⁇ ⁇ ⁇ () to the first generation-side transfer characteristic HA.f). To derive the second generator-side transfer characteristic H A. Q (f).
- the second generation-side transfer characteristic H A -Q (f) is given to the second input digital pattern generation unit 2 2 Q.
- the arbitrary signal generator 2 is detached from the characteristic acquisition device 1 and the digitizer 45 and used to generate the first output analog pattern and the second output analog pattern.
- the correction function of the first input digital pattern generation unit 2 2 I and the correction function of the second input digital pattern generation unit 2 2 Q are used. 0
- the error for example, skew
- the error generated between 8 I and the second DZA converter 24 Q, the second output amplifier 26 Q, and the second output filter 28 Q can be reduced.
- first generator-side transfer characteristic H A -Q (f) This is measured in advance as the second generator-side transfer characteristic H A -Q (f). It is easy to understand by comparing the first comparative example using values with the first embodiment.
- the first generator-side transfer characteristic IL tf) and the second generator-side transfer characteristic H A .Q (f) inevitably contain measurement errors.
- first generation-side transmission characteristic H A .i measured (f) is greater than the true value
- the measured second generation-side transmission characteristic H A. Q (f) is smaller than the true value.
- the first output analog pattern will be smaller and the second output analog pattern will be larger. Let's do it.
- the second generation-side transfer characteristic H A .Q (f) is derived based on the transfer characteristic ratio, the measured first generation-side transfer characteristic HA.f) Although there is a measurement error (for example, greater than the true value), the derived second generator-side transfer characteristic H A .Q (f) also contains the same degree of error as the first generator-side transfer characteristic HA. J (For example, greater than true value).
- the measured first generator side transfer characteristic BU f is a true value. If the value is larger than 1, the first output analog pattern and the second output analog pattern are smaller than the expected values. However, the first output analog pattern and the second output analog pattern can be the same size.
- FIG. 6 is a block diagram showing a configuration of the characteristic acquisition device 1 according to the second embodiment.
- a characteristic acquisition device 1 according to the second embodiment is connected to an arbitrary signal generator (analog pattern generation device) 2 and a digitizer (digital pattern acquisition device) 4. Further, the characteristic acquisition device 1 acquires the characteristic of the digitizer 4.
- the characteristic acquisition device 1 according to the second embodiment includes a first transfer characteristic deriving unit 11, a second transfer characteristic deriving unit 13, a transfer characteristic ratio deriving unit 15, and a transfer characteristic deriving unit 17.
- the first transfer characteristic deriving unit 11 1 operates when the first output terminal 29 I and the first input terminal 41 I are connected.
- the first transfer characteristic deriving unit 11 1 receives the first input digital pattern from the first input digital pattern generation unit 2 2 I (not using the correction function) of the arbitrary signal generator 2.
- the first transfer characteristic deriving unit 11 receives the first output digital pattern from the first output digit pattern acquisition unit 4 2 1 (not using the correction function) of the digitizer 4.
- This first output digital pattern can be said to be a signal when the first input analog pattern (see Fig. 2) is the first output analog pattern (see Fig. 1).
- the first transfer characteristic deriving unit 11 derives a first transfer characteristic for converting the first input digital pattern into the first output digital pattern.
- the second transfer characteristic deriving unit 13 operates when the first output terminal 29 I and the second input terminal 41Q are connected.
- Second transfer characteristic deriving unit 1 3 Receives the first input digital pattern from the first input digital pattern generator 2 2 I (not using the correction function) of the arbitrary signal generator 2.
- the second transfer characteristic deriving unit 13 receives the second output digital pattern from the second output digital pattern acquisition unit 4 2 Q (not using the correction function) of the digitizer 4.
- This second output digital pattern can be said to be a signal when the second input analog pattern (see Fig. 2) is the first output analog pattern (see Fig. 1).
- the second transfer characteristic deriving unit 13 derives a second transfer characteristic for converting the first input digital parameter into a second output digital pattern.
- the transfer characteristic ratio deriving unit 15 receives the first transfer characteristic from the first transfer characteristic deriving unit 11 and receives the second transfer characteristic from the second transfer characteristic deriving unit 13.
- the transfer characteristic ratio deriving unit 15 derives a transfer characteristic ratio which is a ratio of the first transfer characteristic and the second transfer characteristic.
- the transfer characteristic ratio is the characteristic of the digitizer 4.
- the transfer characteristic deriving unit 17 multiplies the first acquisition side transfer characteristic HD.f) by the transfer characteristic ratio derived by the transfer characteristic ratio deriving unit 15 to obtain the second acquisition side transfer characteristic Hi Q (f) Is derived.
- the second acquisition-side transfer characteristic H D .Q (f) is given to the second output digital pattern acquisition unit 4 2 Q, and is used when the correction function of the second output digital pattern acquisition unit 4 2 Q is used. Is done.
- the operation of the second embodiment will be described. First, the first output terminal 29 I and the first input terminal 41 I are connected.
- the first input digital pattern generator 2 2 I of the arbitrary signal generator 2 outputs the first input digital pattern H SI (f). Since the correction function of the first input digital pattern generator 2 2 I is not used, Hsi (f) / H A -i (f) is not output.
- the first input digital pattern H SI (f) is converted to the first output analog pattern by the first D ZA comparator's 2 4 1, the first output amplifier 2 6 I and the first output filter 2 8 I. Is done.
- the first output analog pattern is represented as Hsi ⁇ x HA. F).
- the first output analog pattern is output from the first output terminal 29 I and input to the first input terminal 4 1 I of the digitizer 4 as the first input analog pattern.
- the first input analog pattern is converted to the first output digital pattern by the first input amplifier 4 6 I, the first input cuff 4 8 I, and the first A / D comparator 4 4 I.
- the first output digital pattern Hm (f) is expressed as Hsi (f) XH A -i (f) XH D .i (f).
- the first output digital pattern acquisition unit 42 I acquires the first output digital pattern Hsi (f) ⁇ HA ⁇ i (f) ⁇ HD ⁇ i (f).
- the first transfer characteristic deriving unit 1 1 receives the first input digital pattern H S i (f) from the first input digital pattern generation unit 2 2 I, and receives the first output from the first output digital pattern acquisition unit 4 2 I.
- the first transfer characteristic deriving unit 12 derives a first transfer characteristic for converting the first input digital pattern Hsi (f) into the first output digital pattern Hm (f).
- FIG. 8 is a diagram for explaining the operation of the characteristic acquisition device 1 according to the second embodiment when the first output terminal 29 I and the second input terminal 41 Q are connected.
- the first input digital pattern generation unit 2 2 I of the arbitrary signal generator 2 outputs the first input digital pattern H S i (f).
- First input digital pattern H S i (f) is the first D / A comparator Isseki 2 4 1, the first output amplifier 2 6 I and first output filter evening 2 8 I, the first output analog pattern Converted.
- the first output analog pattern is represented as Hsi (f) XH A -i (f).
- the first output analog pattern is output from the first output terminal 29 I and input to the second input terminal 4 1 Q of the digitizer 4 as the second input analog pattern.
- the second input analog pattern is converted to the second output digital pattern by the second input amplifier 46 Q, the second input filter 48 Q, and the second A / D comparator 44 Q.
- Second output digital pattern H D Q (f) is the first D / A comparator Isseki 2 4 1, the first output amplifier 2 6 I and first output filter evening 2 8 I, the first output analog pattern Converted.
- the first output analog pattern is represented as Hsi (f) XH A -i (f).
- the first output analog pattern is output from the first output terminal 29 I and
- the second output digital parameter acquisition unit 4 2 Q acquires the second output digital pattern H S i (f) x H A .i (f) x H D .Q (f). Since the second output digital pattern acquisition unit 4 2 Q correction function is not used, dividing the output of the second A / D comparator 4 4 Q by H D .Q (f) Output digital pattern acquisition unit 4 2 Does not perform Q.
- the second transfer characteristic deriving unit 1 3 receives the first input digital pattern Hsi (f) from the first input digital pattern generation unit 2 2 I, and receives the second output digital pattern acquisition unit 4 2 Q from the second output.
- the second transmission characteristic deriving unit 1 3 derives a second transmission characteristic which converts the first input digital pattern Hsi the (f) to the second output digital pattern H D Q (f).
- the transfer characteristic ratio is H D -Q (f) ZH D .i (f).
- the transfer characteristic deriving unit 17 receives the transfer characteristic ratio from the transfer characteristic ratio deriving unit 15. Further, the transfer characteristic deriving unit 17 records the first acquisition side transfer characteristic H f). Further, the transfer characteristic deriving unit 17 adds the transfer characteristic ratio H D .Q (f) / H D .i (f to the first acquisition-side transfer characteristic HD ⁇ f) to the transfer characteristic ratio deriving unit 15. ) To derive the second acquisition-side transfer characteristic H D .Q (f). The second acquisition side transfer characteristic H D. Q (f) is given to the second output digital pattern acquisition unit 42 Q.
- the digitizer 4 is removed from the characteristic acquisition device 1 and the arbitrary signal generator 2, and the first output digit pattern and the second output digit pattern are obtained from the first input analog pattern and the second input analog pattern. Used to get the password.
- the correction function of the first output digital pattern acquisition unit 4 2 I and the correction function of the second output digital pattern acquisition unit 4 2 Q are used.
- the error for example, skew
- the error can be reduced.
- the second acquisition-side transfer characteristic H D .Q (f) is derived based on the transfer characteristic ratio, the measured first acquisition-side transfer characteristic H D .i (although there is a measurement error in f) (eg greater than the true value), the derived second acquisition side transfer characteristic H D. Q (f) is also comparable to the first acquisition side transfer characteristic HD. f) (For example, greater than the true value).
- the first output digital pattern and the second output digital pattern of the same size using the correction function (however, the first input analog pattern and the second input analog pattern If the measured first acquisition side transfer characteristics H D .i (f) is greater than the true value, the first output digital pattern and the second output digital pattern will be It will be smaller than the value. However, the first output digital pattern and the second output digital pattern Turns can be the same size.
- FIG. 9 is a block diagram showing a configuration of the characteristic acquisition device 1 according to the third embodiment.
- the characteristic acquisition device 1 according to the third embodiment is connected to an arbitrary signal generator (analog pattern generation device) 2 and a digitizer (digital pattern acquisition device) 4. Furthermore, the characteristic acquisition device 1 acquires the delay characteristic in the transmission path from the arbitrary signal generator 2 to the digitizer 4.
- the characteristic acquisition device 1 includes a first straight transmission characteristic deriving unit 1 0 2, a first cross transmission characteristic deriving unit 1 0 4, a second straight transmission characteristic deriving unit 1 0 6, a second Cross transfer characteristic deriving unit 1 0 8, Delay characteristic deriving unit 1 1 0, Generation side transfer characteristic ratio deriving unit 1 1 2, Generation side transfer characteristic deriving unit 1 1 4, Acquisition side transfer characteristic ratio deriving unit 1 1 6, Acquisition A side transfer characteristic deriving unit 1 1 8 is provided.
- the first straight transfer characteristic deriving section 1 0 2 operates when the first output terminal 29 I and the first input terminal 41 I are connected.
- the first straight transfer characteristic deriving unit 102 receives the first input digital pattern from the first input digital pattern generation unit 2 21 (not using the correction function) of the arbitrary signal generator 2.
- the first straight transfer characteristic deriving unit 102 receives the first output digital pattern from the first output digital pattern acquisition unit 4 2 I (not using the correction function) of the digitizer 4.
- This first output digital pattern can be said to be a signal when the first input analog pattern (see Fig. 2) is the first output analog pattern (see Fig. 1).
- the first straight transmission characteristic deriving unit 102 derives a first straight transmission characteristic that converts the first input digital pattern into the first output digital pattern.
- the first cross transfer characteristic deriving unit 1 0 4 operates when the first output terminal 2 9 I and the second input terminal 4 1 Q are connected.
- the first cross transmission characteristic deriving unit 10 04 receives the first input digital pattern from the first input digital pattern generation unit 2 2 1 (not using the correction function) of the arbitrary signal generator 2. Further, the first cross transfer characteristic deriving unit 104 receives the second output digital pattern from the second output digital pattern acquisition unit 4 2 Q (not using the correction function) of the digitizer 4. This second output digital pattern can be said to be a signal when the second input analog pattern (see Fig. 2) is the first output analog pattern (see Fig. 1). The first cross transfer characteristic deriving unit 104 derives a first cross transfer characteristic for converting the first input digital pattern into the second output digital pattern.
- the first nitrate transfer characteristic deriving unit 1 0 6 operates when the second output terminal 2 9 Q and the second input terminal 4 1 Q are connected.
- the first nitrite transfer characteristic deriving unit 106 receives the second input digital pattern from the second input digital pattern generation unit 2 2 Q (not using the correction function) of the arbitrary signal generator 2.
- the second straight transfer characteristic deriving unit 106 receives the second output digital pattern from the second output digital pattern acquisition unit 4 2 Q (not using the correction function ') of the digitizer 4.
- This second output digital pattern can be said to be a signal when the second input analog pattern (see Fig. 2) is the second output analog pattern (see Fig. 1).
- the second straight transfer characteristic deriving unit 1 0 6 is the second input digital pattern
- the second varnish transfer characteristic is converted to the second output digital pattern.
- the second cross transfer characteristic deriving unit 1 0 8 operates when the second output terminal 2 9 Q and the first input terminal 4 1 I are connected.
- the second cross transmission characteristic deriving unit 10 8 receives the second input digital pattern from the second input digital pattern generation unit 2 2 Q (not using the correction function) of the arbitrary signal generator 2.
- the second cross transfer characteristic deriving unit 108 receives the first output digital pattern from the first output digital pattern acquisition unit 4 2 I (not using the correction function) of the digitizer 4. This first output digital pattern can be said to be a signal when the first input analog pattern (see Fig. 2) is the second output analog pattern (see Fig. 1).
- the second cross transfer characteristic deriving unit 10 8 derives a second transfer characteristic for converting the second input digital pattern into the first output digital pattern.
- the delay characteristic deriving unit 110 derives a delay characteristic based on the first straight transmission characteristic, the first cross transmission characteristic, the second straight transmission characteristic, and the second cross transmission characteristic.
- the delay characteristic deriving unit 1 1 0 has the first straight transmission characteristic from the first straight transmission characteristic deriving unit 1 0 2 and the first cross transmission characteristic from the first cross transmission characteristic deriving unit 1 0 4 to the second
- the straight transmission characteristic is obtained from the first varnish transfer characteristic deriving unit 10 6, and the second cross transmission characteristic is obtained from the second cross transfer characteristic deriving unit 10 8.
- the delay characteristic will be described.
- tl (f) be the delay time due to the first AZD compa
- the delay time by the second AZD converter 4 4 Q in a state where the second output terminal 29 Q and the second input terminal 4 1 Q are connected is also tl (f).
- the delay time t2 (f) due to the first A / D comparator 4 4 1 when the second output terminal 29 Q and the first input terminal 4 1 I are connected is originally tl (f) Should be equal to
- the delay time due to the second AD converter 4 4 Q when the first output terminal 2 9 I and the second input terminal 4 1 Q are connected is also t2 (f), which is essentially tl (f) Should be equal.
- H TD (f) can be derived as shown in Equation (1) below.
- H n (f) is the first straight transmission characteristic
- HiQ (f) is the first cross transmission characteristic
- H QQ (f) is the second straight transmission characteristic
- H Q i (f) is the second cross transmission characteristic. It is sex.
- Delay characteristic deriving unit 1 1 0 is the first straight transmission characteristic H n (f), the first cross transmission characteristic Hi Q (f), the second straight transmission characteristic H Q Q (f), the second cross transmission characteristic Substitute HQi (f) into Eq. (2) to derive P TD (f).
- the delay characteristic deriving unit 1 10 derived: Substituting P T D (f) into Equation (1) to derive the delay characteristic H TD (f). The proof that the delay characteristic is expressed as in equation (1) will be described later.
- the generation-side transfer characteristic ratio deriving unit 1 1 2 receives the second cross transfer characteristic H Q i (f) from the second cross transfer characteristic deriving unit 1 0 8, and the first straight transfer characteristic H n (f) to the first straight Received from transfer characteristic deriving unit 1 0 2.
- the generation-side transfer characteristic ratio deriving unit 1 1 2 receives the delay characteristic H TD (f) from the delay characteristic deriving unit 1 0.
- the generator-side transfer characteristic ratio deriving unit 1 1 2 calculates the second cross transfer characteristic H Q i (f) as the product of the first straight transfer characteristic H n (f) and the delay characteristic H TD (f). The ratio of the divided generator-side transfer characteristics is derived.
- the generation-side transfer characteristic deriving unit 1 1 4 multiplies the first generation-side transfer characteristic H A .i (f) by the generation-side transfer characteristic ratio derived by the generation-side transfer characteristic ratio deriving unit 1 1 2. Then, the second generation-side transfer characteristic H A. Q (f) is derived.
- the second generation side transfer characteristic H A .Q (f) is given to the second input digital pattern generation unit 2 2 Q, and when the correction function of the second input digital pattern generation unit 2 2 Q is used.
- Used for The acquisition-side transfer characteristic ratio deriving unit 1 1 6 obtains the first cross transfer characteristic H IQ (f) from the first cross transfer characteristic deriving unit 10 4 and the first straight transfer characteristic H n (f) Received from the trait transfer characteristic deriving unit 1 0 2.
- the acquisition-side transfer characteristic ratio deriving unit 1 16 receives the delay characteristic H TD (f) from the delay characteristic deriving unit 1 10.
- the acquisition-side transfer characteristic ratio deriving unit 1 1 6 divides the first cross transfer characteristic H IQ (f) by the product of the first straight transfer characteristic 3 ⁇ 4i (f) and the delay characteristic H TD (f).
- the acquisition side transfer characteristic ratio is derived.
- Acquisition side transfer characteristic deriving unit 1 1 8 is the first acquisition side transfer characteristic
- the second acquisition-side transfer characteristic H] Q (f) is derived by multiplying the acquisition-side transfer characteristic ratio deriving unit 1 16 by the acquisition-side transfer characteristic ratio.
- the second acquisition-side transfer characteristic H D. Q (f) is given to the second output digital signal acquisition unit 4 2 Q, and when the correction function of the second output digital pattern acquisition unit 4 2 Q is used. Used for Next, the operation of the third embodiment will be described.
- the first output terminal 2 9 I and the first input terminal 4 1 I are connected, and the second output terminal 2 9 Q and the second input terminal 4 1 Q are connected.
- Figure 10 shows the first output terminal 29 I (second output terminal 29 Q) and the first input terminal. It is a figure for demonstrating operation
- the first input digital pattern generation unit 2 2 I of the arbitrary signal generator 2 outputs the first input digital pattern H S i (f). Since the correction function of the first input digital pattern generation unit 2 2 I is not used, Hsi (f) / H A .i (f) is not output.
- the first input digital pattern Hsi (f) is converted to the first output analog pad by the first D ZA converter 2 4 1, the first output amplifier 2 6 I and the first output filter 2 8 I.
- the first output analog pattern is
- H S i (f) xH A ⁇ i (f) The first output analog pattern is output from the first output terminal 29 I and input to the first input terminal 4 1 I of the digitizer 4 as the first input analog pattern.
- the first input analog pattern is converted to the first output digital pattern by the first input amplifier 4 61, the first input cuff 4 8 I and the first AZD comparator 4 4 I.
- the first output digital pattern H D i (f) is expressed as Hsi (f) XH A -i (f) x H D .i (f).
- First output digital pattern acquisition unit 4 2 I acquires the first output digital pattern Hsi (f) x H A .i (f) xH D -i (f).
- the first straight transfer characteristic deriving unit 1 0 2 receives the first input digital pattern Hsi (f) from the first input digital pattern generation unit 2 2 I, and receives the first output digital pattern acquisition unit 4 2 I.
- the first straight transmission characteristic deriving unit 10 2 derives a first straight transmission characteristic for converting the first input digital pattern H S i (f) into the first output digital pattern H D i (f).
- the second input digital pattern generation unit 2 2 Q of the arbitrary signal generator 2 outputs the second input digital pattern H S Q (f). Since the correction function of 2nd input digital signal generator 2 2 Q is not used, H SQ (f) / H A. Q (f) is not output.
- the second input digital pattern H S Q (f) is converted to the second output analog pattern by the second D ZA converter 24 Q, the second output amplifier 26 Q, and the second output filter 28 Q. .
- the second output analog pattern is represented as H SQ (f) XH A. Q (f).
- the second output analog pattern is output from the second output terminal 29 Q and input to the second input terminal 4 1 Q of the digitizer 4 as the second input analog pattern.
- the 2nd input analog pattern is the 2nd input amplifier 4 6 Q, the 2nd input filter 4 8 Q and the 2nd A / D comparator 4 4 Q. Converted to the evening pattern.
- the second output digital pattern H D Q (f) is expressed as Hsq (f) XH A -q (f) X Ho-Q (f).
- Second output digital pattern acquisition unit 4 2 Q the second output digital pattern H S Q (f) x H A .Q (f) XH D. To Obtain the Q (f). Since the second output digital pattern acquisition unit 4 2 Q correction function is not used, dividing the output of the second AD converter 4 4 Q by B .Q (f) means that the second output digital pattern acquisition unit 4 2 Do not Q.
- the first straight transfer characteristic deriving unit 1 0 6 receives the second input digital pattern H SQ (f) from the second input digital pattern generation unit 2 2 Q, and receives the second output digital pattern acquisition unit 4 2 Q from the second input digital pattern acquisition unit 4 2 Q.
- FIG. 11 shows the third case where the first output terminal 29 I (second output terminal 29 Q) and the second input terminal 41Q (first input terminal 4 II) are connected. It is a figure for demonstrating operation
- the first input digital pattern generation unit 2 2 I of the arbitrary signal generator 2 outputs the first input digital pattern H S i (f).
- the first input digital path Since the correction function of the turn generator 2 2 I is not used, H SI (f) / H A .i (f) is not output.
- First input digital pattern H S i (f) is the first D / A comparator Isseki 2 4 1, the first output amplifier 2 6 I and first output filter evening 2 8 I, the first output analog pattern Converted.
- the first output analog pattern is represented as Hsi (f) x H A .i (f).
- the first output analog pattern is output from the first output terminal 29 I and input to the second input terminal 4 1 Q of the digitizer 4 as the second input analog pattern.
- the second input analog pattern is converted to the second output digital pattern by the second input amplifier 4 6 Q, the second input cuff 4 8 Q and the second AZD converter 4 4 Q.
- Second output digital pattern HDQ (£) is expressed as Hsi (f) XH A i ( f) x Hi Q (f).
- Second output digital pattern acquisition unit 4 2 Q acquires the second output digital pattern H S i (f) xH A .i (f) x H D .Q the (f). Since the correction function of the second output digital pattern acquisition unit 4 2 Q is not used, it is necessary to divide the output of the second A / D comparator's 44 Q by H D. Q (f). Dual output digital pattern acquisition unit 4 2 Does not perform Q.
- the first cross transfer characteristic deriving unit 1 0 4 receives the first input digital pattern Hsi (f) from the first input digital pattern generation unit 2 2 I, and from the second output digital pattern acquisition unit 4 2 Q
- the first cross transfer characteristic deriving unit 10 04 converts the first input digital pattern H SI (f) into the second output data. Deriving the first cross transfer characteristic to be converted into the dihedral pattern H DQ (f). Specifically, the second output digital pattern H DQ (f) is divided by the first input digital pattern Hsi (f).
- a first cross transmission characteristics HiQ (f) H DQ ( f) / Hsi (f) H ⁇ x HD- f).
- the second input digital pattern generator 2 2 Q of the arbitrary signal generator 2 outputs the second input digital pattern H SQ (f). Since the correction function of the 2nd input digital pattern generator 2 2 Q is not used, H SQ (f) / H A -Q (f) is not output.
- the second input digital pattern H S Q (f) is converted to the second output analog pattern by the second D ZA comparator 24 Q, the second output amplifier 26 Q and the second output filter 28 Q. Is done.
- the second output analog pattern is represented as H SQ (f) XH A .Q (f).
- the second output analog pattern is output from the second output terminal 29 Q and input to the first input terminal 4 1 I of the digitizer 4 as the first input analog pattern.
- the first input analog pattern is converted to the first output digital pattern by the first input amplifier 4 6 I, the first input filter 4 8 I, and the first A / D comparator 4 4 I.
- the first output digital pattern Hm (f) is expressed as H S Q (f) ⁇ HA ⁇ Q (f) ⁇ HD-i (f).
- the delay characteristic deriving unit 1 1 0 converts the first straight transfer characteristic H n (f) from the first straight transfer characteristic deriving unit 1 0 2 and the first cross transfer characteristic HiQ (f) to the first —cross transfer characteristic deriving unit.
- the first varnish transfer characteristic H QQ (f) is obtained from the first varnish transfer characteristic deriving unit 10 06
- the second cross transfer characteristic HQi (f) is obtained from the second cross transfer characteristic deriving unit 10 08.
- the delay characteristic deriving unit 1 1 0 includes the first straight transmission characteristic Hn (f), the first cross transmission characteristic Hi Q (f), the second straight transmission characteristic HQ Q (f), scan transfer characteristic H QI (f) is substituted into equation (2) to derive the P TD (f).
- the delay characteristic deriving unit 110 substitutes the derived P TD (f) into Equation (1) to derive the delay characteristic H TD (f).
- the generation-side transfer characteristic ratio deriving unit 1 1 2 receives the first straight transfer characteristic H n (f) from the first straight transfer characteristic deriving unit 1 0 2 and receives the second cross transfer characteristic.
- the second cross transfer characteristic H Q i (f) is received from the sex deriving unit 1 0 8.
- the generation-side transfer characteristic ratio deriving unit 1-1 2 receives the delay characteristic H TD (f) from the delay characteristic deriving unit 1 10.
- the generation-side transfer characteristic ratio deriving unit 1 1 2 divides the second cross transfer characteristic H QI (f) by the product of the first straight transfer characteristic H n (f) and the delay characteristic H TD (f). The generation-side transfer characteristic ratio is derived.
- the generation side transfer characteristic deriving unit 1 1 4 receives the generation side transfer characteristic ratio from the generation side transfer characteristic ratio deriving unit 1 1 2.
- the generation-side transfer characteristic deriving unit 1 14 records the first generation-side transfer characteristic H A .i (f).
- the generation-side transfer characteristic deriving unit 1 1 4 includes the generation-side transfer characteristic ratio derived by the generation-side transfer characteristic ratio deriving unit 1 1 2 in the first generation-side transfer characteristic B f). To derive the second generator-side transfer characteristic H A. Q (f).
- the second generation side transfer characteristic H A - Q (f) is given to the second input digital signal generator 2 2 Q.
- the acquisition-side transfer characteristic ratio deriving unit 1 1 6 receives the first straight transfer characteristic deriving unit Hu (f) from the first straight transfer characteristic deriving unit 10 2 and receives the first cross transfer characteristic deriving unit 10 Receives one cross transfer characteristic Hi Q (f). Further, the acquisition-side transfer characteristic ratio deriving unit 1 1 6 receives the delay characteristic H TD (f) from the delay characteristic deriving unit 1 10. Furthermore, the acquisition-side transfer characteristic ratio deriving unit 1 1 6 converts the first cross transfer characteristic H IG! (F) into the first straight transfer characteristic H n (f) and the delay characteristic H TD (f).
- the acquisition-side transfer characteristic deriving unit 1 1 8 receives the acquisition-side transfer characteristic ratio from the acquisition-side transfer characteristic ratio deriving unit 1 16.
- the acquisition-side transfer characteristic deriving unit 1 18 records the first acquisition-side transfer characteristic H D .i (f). Furthermore, the acquisition-side transfer characteristic deriving unit 1 1 8 adds the acquisition-side transfer characteristic ratio H D derived by the acquisition-side transfer characteristic ratio deriving unit 1 1 6 to the first acquisition-side transfer characteristic H D .i (f). Multiply by Q (f) / Hi i (f) to derive the second acquisition side transfer characteristic H] Q (f). The second acquisition side transfer characteristic H D. Q (f) is given to the second output digital pattern acquisition unit 4 2 Q. Thereafter, the arbitrary signal generator 2 is detached from the characteristic acquisition device 1 and the digitizer 4 and used to generate the first output analog pattern and the second output analog pattern.
- the correction function of the first input digital pattern generation unit 2 2 1 and the correction function of the second input digital pattern generation unit 2 2 Q are used. Also, remove the digitizer 4 from the characteristic acquisition device 1 and the arbitrary signal generator 2, and change the first output digit pattern and the second output digital pattern from the first input analog pattern and the second input analog pattern. Used to get. At this time, the first output digital pattern The correction function of the acquisition unit 42 I and the correction function of the second output digital pattern acquisition unit 42 Q are used. According to the third embodiment, there are the same effects as the first embodiment and the second embodiment. In addition, the error can be reduced more accurately considering the delay characteristic H TD (f). Moreover, said embodiment is realizable as follows.
- t A -i Time required for processing the first D / A comparator overnight 24 I, the first output amplifier 26 I, and the first output filter evening 281
- .I, t A .Q, tD-I and tD-Q are functions of the input frequency f.
- ⁇ Time from generation of the first input digital pattern to acquisition of the first output digital pattern when the first output terminal 2 9 I and the first input terminal 4 1 I are connected
- TQI Time from generation of the second input digital pattern to acquisition of the first output digital pattern when the second output terminal 2 9 Q and the first input terminal 4 1 I are connected
- TQQ Time from generation of second input digital pattern to acquisition of second output digital pattern when second output terminal 2 9 Q and second input terminal 4 1 Q are connected
- TQQ tA-Q + tD-Q + tl
- TII, TIQ, TQI and TQQ are expressed as S parameters.
- Equation (3) TII, T IQ , T Q I and T QQ are converted to H n (f), H IQ (f), H Q i (f) and H Q Q (f), respectively, and added
- T D (f) can be converted to phase difference P TD (f).
- equation (2) derived from PTD (f) is obtained.
- Equation (1) derived from H TD (f) can be obtained.
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JP (1) | JP3919803B1 (ja) |
KR (1) | KR20090005353A (ja) |
DE (1) | DE112007000897T5 (ja) |
WO (1) | WO2007123056A1 (ja) |
Families Citing this family (13)
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US9288089B2 (en) | 2010-04-30 | 2016-03-15 | Ecole Polytechnique Federale De Lausanne (Epfl) | Orthogonal differential vector signaling |
US8769624B2 (en) * | 2011-09-29 | 2014-07-01 | Apple Inc. | Access control utilizing indirect authentication |
EP2979388B1 (en) | 2013-04-16 | 2020-02-12 | Kandou Labs, S.A. | Methods and systems for high bandwidth communications interface |
CN106030645B (zh) * | 2013-12-31 | 2021-05-11 | 丹尼斯·斯通 | 登记系统和方法 |
CN105993151B (zh) * | 2014-02-02 | 2019-06-21 | 康杜实验室公司 | 低isi比低功率芯片间通信方法和装置 |
US11240076B2 (en) | 2014-05-13 | 2022-02-01 | Kandou Labs, S.A. | Vector signaling code with improved noise margin |
US9832046B2 (en) | 2015-06-26 | 2017-11-28 | Kandou Labs, S.A. | High speed communications system |
CN110741562B (zh) | 2017-04-14 | 2022-11-04 | 康杜实验室公司 | 向量信令码信道的流水线式前向纠错 |
US10693473B2 (en) | 2017-05-22 | 2020-06-23 | Kandou Labs, S.A. | Multi-modal data-driven clock recovery circuit |
US10116468B1 (en) | 2017-06-28 | 2018-10-30 | Kandou Labs, S.A. | Low power chip-to-chip bidirectional communications |
US10693587B2 (en) | 2017-07-10 | 2020-06-23 | Kandou Labs, S.A. | Multi-wire permuted forward error correction |
KR102498475B1 (ko) | 2017-12-28 | 2023-02-09 | 칸도우 랩스 에스에이 | 동기식으로 스위칭된 다중 입력 복조 비교기 |
US11831472B1 (en) | 2022-08-30 | 2023-11-28 | Kandou Labs SA | Pre-scaler for orthogonal differential vector signalling |
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- 2007-04-06 KR KR1020087026769A patent/KR20090005353A/ko not_active Application Discontinuation
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JPS615625A (ja) * | 1984-06-20 | 1986-01-11 | Toshiba Corp | Daコンバ−タの直線性の補正装置 |
JPH0621816A (ja) * | 1992-07-03 | 1994-01-28 | Toshiba Corp | D/aコンバータテスト回路 |
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US7999706B2 (en) | 2011-08-16 |
DE112007000897T5 (de) | 2009-04-02 |
JP2007288463A (ja) | 2007-11-01 |
US20110018749A1 (en) | 2011-01-27 |
JP3919803B1 (ja) | 2007-05-30 |
KR20090005353A (ko) | 2009-01-13 |
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