WO2003091864A1 - Traitement de calcul de donnees faisant appel a un oscillateur de reference pour un dispositif numerique et procede de transmission/enregistrement/reproduction - Google Patents

Traitement de calcul de donnees faisant appel a un oscillateur de reference pour un dispositif numerique et procede de transmission/enregistrement/reproduction Download PDF

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Publication number
WO2003091864A1
WO2003091864A1 PCT/JP2003/004918 JP0304918W WO03091864A1 WO 2003091864 A1 WO2003091864 A1 WO 2003091864A1 JP 0304918 W JP0304918 W JP 0304918W WO 03091864 A1 WO03091864 A1 WO 03091864A1
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WO
WIPO (PCT)
Prior art keywords
digital
clock
atomic
recording
frequency
Prior art date
Application number
PCT/JP2003/004918
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English (en)
Japanese (ja)
Inventor
Masamichi Ohashi
Masamichi Tuchiya
Original Assignee
Nippon Sogo Seisaku Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Sogo Seisaku Co., Ltd. filed Critical Nippon Sogo Seisaku Co., Ltd.
Priority to AU2003235212A priority Critical patent/AU2003235212A1/en
Publication of WO2003091864A1 publication Critical patent/WO2003091864A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom

Definitions

  • a clock signal generator used for a digital device in a digital arithmetic processing and transmission recording / reproducing system (computer device and system, etc.) or a reference oscillator of a clock signal generator (clock generator) generally includes a plurality of clocks. Crystal oscillators were used, which performed analog-to-digital or digital conversion, then processed digital data, then transmitted, then recorded, and then played back.
  • FIG. 7 there is a digital device comprising a digital device main body 12 and one or a plurality of reference crystal oscillators 13 for a clock signal generator built in the digital device. Some devices use the reference crystal oscillator 13 to generate a clock signal required for digital equipment.
  • a digital operation consisting of a clock signal generator or synthesizer 14 for digital equipment capable of inputting a reference signal from a built-in reference crystal oscillator or an external reference crystal oscillator and a digital equipment body 15
  • a processing, transmission, recording, and playback system and a digital clock signal generating or synthesizing device 14 capable of inputting a reference signal from the built-in reference crystal oscillator or an external reference crystal oscillation device.
  • Some devices generate the necessary clock signal and supply it to the digital device itself.
  • the clock signal generator is composed of a 14.318 MHz crystal oscillator and a frequency synthesizer for the arithmetic and storage units and the control unit in the central processing unit 16.
  • the clock signal generator For input / output devices 17 use 24.576 megahertz crystal oscillator, for internal clock use 32.768 kilohertz crystal oscillator, for communication devices 18 use 24.
  • the use of 5 MHz crystal oscillators and a total of 4 units are installed, and there are actual conditions in which the frequency and frequency stability differ for each crystal oscillator.
  • each of the magnetic desk recorders, FD recorders, CD-RW recorders, and DVD recorders connected internally or externally has a built-in quartz crystal oscillator for each device, and is used in the same manner as described above. In reality, the frequency and frequency stability of each crystal oscillator differ.
  • the clock signal generator uses a crystal oscillator for clock for each of 65 coupling networks 19, and 64 computation nodes.
  • one clock crystal oscillator is used for shared memory, and one clock crystal oscillator is used for each vector processor, for a total of eight units.
  • one clock signal generator is used for the central processing unit 21 and a maximum of 16 clock signal generators, one for the main storage device 22 and one for the input / output device
  • Up to 8 units are used for 2 3 and up to 8 units, 3 or more units for the desk array unit 24, 1 or more units for the I / O control unit 25 and 1 unit for each connected I / O device, and 9 units for the whole system
  • a maximum of 33 or more clock crystal oscillators are installed. There is a fact that the frequency stability differs for each of up to 33 or more clock crystal oscillators. is there.
  • one or two redundant crystal oscillators and two or more frequency generators or synthesizers are used to obtain the necessary multiple frequencies for multiple use, and each of them is required by multiple multiple distribution amplifiers.
  • the method of supplying to places where it is not used is actually used.
  • each of the arithmetic processing units 26 is provided for each of the multi-function controllers 27 and 30.
  • a total of 9 clock crystal oscillators are installed.
  • each frequency stability is different.
  • one or two redundant crystal oscillators and two or more frequency generators or synthesizers are used for redundancy to obtain the necessary multiple
  • the method of supplying each necessary part by the amplifier is not used.
  • the crystal oscillator when used as a reference oscillator for digital equipment to supply a necessary peak frequency, the crystal oscillator has a low frequency stability due to its low frequency stability.
  • jitters occur in the data due to data fluctuations (fluctuations, blurs, etc.), so-called jitters, which have an adverse effect on the data calculation processing, and which cause code errors such as data loss. discovered.
  • some of the causes of data loss, coding errors, and software bugs were largely due to the stability and accuracy of the internal or externally supplied control oscillator.
  • a clock on the computer system is liable to fluctuate greatly from several seconds to several minutes per day and is unstable.
  • the performance of the watch alone reveals the instability of the oscillator that controls the digital system.
  • the general frequency stability of the conventional crystal oscillator is about 5 / 10,000, the frequency accuracy is 1 / 10,000 or less, and the frequency temperature characteristic is about 5 / 10,000 to 10,000,000. It is about one-third.
  • the error rate of a general-purpose recording device used for digital devices is required to be less than 1 / trillion to less than 1/10 trillion, and the required frequency stability is 1 / 10,000,000. Less than 1 to 100 billion is required.
  • the processing speed of microprocessors is more than 100 billion operations per second, and the frequency stability required for digital data processing is required to be less than 5/100 billion.
  • the instruction execution speed of the supercomputer is required to be less than 5/100 trillion when the floating point arithmetic processing is performed 10 trillion times per second.
  • the data transfer rate of the system bus and input / output bus for digital systems and digital devices will be from 1.5 megabits per second to 10 gigabits per second, and the required frequency stability will be less than 2 / 10,000,000. Less than one part per trillion is required.
  • the digital data arithmetic processing used in digital systems and digital equipment and the generation of jitter during transmission, recording, and reproduction have a high code error rate and code error correction and detection. Even if the capability is high, there are many residual errors after code error correction, and the conventional method that can be said to rely on such code error correction technology requires arithmetic processing and transmission recording that require high quality and high accuracy. There is a problem due to the deterioration of the reproduction capability.
  • the conventional digital systems and digital devices have increased processing capability. It is designed and implemented as the only one, realizing several megahertz to several gigahertz in the case of higher frequencies of general digital processors, and tens of millions of operations per second in the case of higher processing speeds. Although there is a realization of 100 million operations per second, advanced coding error correction technology has been developed and put into practical use with it.However, the stability and accuracy of the mouthpiece have not been studied, and There is a problem that has been neglected.
  • the present invention solves the problem of using the conventional crystal oscillator as a reference oscillator, and significantly reduces jitter during digital data arithmetic processing and transmission recording / reproduction, and achieves synchronization accuracy.
  • an atomic clock or an atomic frequency standard using rubidium is used as a reference oscillator for digital equipment
  • a cesium is used as a reference oscillator for digital equipment.
  • an atomic clock using hydrogen or an atomic frequency standard using hydrogen is used as the reference oscillator for digital equipment.
  • the technical means of using an atomic clock using mercury or an atomic frequency standard as the reference oscillator for digital equipment is adopted.
  • the present invention provides a data arithmetic processing and a transmission recording / reproducing method.
  • a clock generator a digital system and a digital device controlled by a conventional oscillator below a crystal can be compared to an abacus calculation in terms of processing, which is equivalent to performing an abacus calculation under a strong earthquake.
  • an atomic clock or atomic frequency standard using rubidium, cesium, hydrogen, and mercury as the mouthpiece generator, and increasing the stability and accuracy, a more stable environment can be achieved. This means that accurate calculations can be performed.
  • the present invention adopts an atomic clock or an atomic frequency standard using rubidium as a reference oscillator for digital cameras, thereby achieving a frequency stability of less than 5/100 billion and a frequency accuracy of 10 Except for supercomputer-related products, this is about 5/100 million, and satisfies the frequency stability required for digital data arithmetic processing and the frequency stability and frequency accuracy required for data transmission, recording, and reproduction.
  • the frequency stability will be less than 5/100 trillion and the frequency accuracy will be less than 1 / trillion.
  • the frequency stability will be less than two-hundredths of a meter and the frequency accuracy will be less than one part-per-trillion. It satisfies the required frequency stability and satisfies the required frequency stability and frequency accuracy during data transmission, recording and reproduction.
  • Atomic clock or atomic frequency standard using mercury as reference oscillator for digital equipment By adopting, the frequency stability is less than 1/1000 and the frequency accuracy is less than 1 / trillion, which satisfies the frequency stability required for digital data arithmetic processing and the frequency required for data transmission recording / reproduction.
  • An embodiment that satisfies the stability and frequency accuracy is given as an embodiment.
  • FIG. 1, FIG. 2, FIG. 3, and FIG. 4 show a method of using an atomic clock or an atomic frequency standard as the reference oscillator for digital equipment according to the present embodiment.
  • Numeral 1 is an atomic clock or an atomic frequency standard, which uses either rubidium, cesium, hydrogen, or mercury, and is used as a digital device clock signal. It supplies a reference signal used for the generating or synthesizing device 2.
  • Reference numeral 2 denotes a clock signal generating or synthesizing device for a digital device, which generates one or more clock signals for a digital device based on a reference signal supplied from an atomic clock or an atomic frequency standard, and outputs one or more clock signals for the digital device. It is supplied to digital devices.
  • Reference numeral 3 denotes a digital system or a digital storage device, which is classified into a super computer device and system, a computer device and system, a micro computer device and system, a personal computer device and system, a digital recording system (computer semiconductor storage device, Magnetic storage devices for computers, compact disk (CD) devices, digital video disk (DVD) devices, DAT devices, minidisk (MD) devices, magneto-optical (MO) devices, digital tape using magnetic tape media Recorders, digital VTRs, hard disk (HD) devices, other semiconductor memory devices), computer network devices and systems, LAN devices and systems, WAN devices and systems, online systems, etc. It can be employed in all of the barrel equipment.
  • Numeral 4 is a built-in atomic clock or atomic frequency standard that uses either rubidium, cesium, hydrogen, or mercury, and uses digital equipment. It supplies a reference signal to be used for the cooktop signal generator or synthesizer 2 or the apparatus and system.
  • Reference numeral 5 denotes a built-in digital device clock signal generator or synthesizer or device that generates one or more digital device clock signals based on a reference signal supplied from an atomic clock or an atomic frequency standard. , One or more digital devices.
  • Reference numeral 6 denotes an integrated digital device, which includes super computer devices and systems, computer devices and systems, microcomputer devices and systems, personal computer devices and systems, digital recording systems (computer semiconductor storage devices, computers Magnetic storage device, compact disk (CD) device, digital video disk (DVD) device, DAT device, mini disk (MD) device, magneto-optical (MO) device, digital tape recorder using magnetic tape media, digital Digital systems and digital devices such as VTRs, hard disk (HD) devices, other semiconductor memory devices), computer network devices and systems, LAN devices and systems, WAN devices and systems, online systems It can be adopted all of the.
  • digital recording systems computer semiconductor storage devices, computers Magnetic storage device, compact disk (CD) device, digital video disk (DVD) device, DAT device, mini disk (MD) device, magneto-optical (MO) device, digital tape recorder using magnetic tape media
  • digital Digital systems and digital devices such as VTRs, hard disk (HD) devices, other semiconductor memory devices
  • computer network devices and systems LAN devices and systems, WAN devices and systems, online
  • FIG. 3 presents an example of the present invention used for a general-purpose computer or a personal computer.
  • Numeral 7 is an atomic clock or an atomic frequency standard, which uses any one of rubidium, cesium, hydrogen, or mercury for digital equipment. It supplies a reference signal to be used for the click generator or the synthesizer 8.
  • Reference numeral 8 denotes a digital device clock signal generating or synthesizing device and a distribution amplifier, which generates a plurality of digital device clock signals based on a reference signal supplied from an atomic clock or an atomic frequency standard, and outputs a plurality of digital signals. It is supplied to the equipment.
  • Reference numeral 9 denotes a general-purpose computer device or system, and a plurality of necessary clock signals are supplied from a clock generating or synthesizing device for a digital device and a distribution amplifier.
  • Nine general-purpose computer devices or systems are processing units as central processing units And one type of clock required for I / O devices, one or more types of clocks required for connected I / O devices, and one or more types of clocks required for communication devices.
  • FIG. 4 presents an example of the present invention used in a supercomputer.
  • Numeral 10 is an atomic clock or an atomic frequency standard, which uses either rubidium, cesium, hydrogen, or mercury, and is used for digital equipment clocks. It supplies a reference signal for use in the generator or combiner and the distribution amplifier 11.
  • Reference numeral 1 denotes a digital device clock signal generating or synthesizing device and a distribution amplifier, which generate a plurality of digital device clock signals based on a reference signal supplied from an atomic clock or an atomic frequency standard. It supplies to a plurality of digital devices.
  • a supercomputer system is used between the network distribution and the network equipment, and a plurality of necessary clock signals are supplied from a digital equipment clock generation or synthesis apparatus and a distribution amplifier.
  • a central processing unit group is configured and a maximum of 16 distributions are required for one type of computer, one type for main storage, and a maximum of 4 distributions for one or more types of I / O devices.
  • a minimum of 6 distributions or a maximum of 23 distributions is required as the number of distributions, and they are supplied from the digital device's digital device generation / combining device and distribution amplifier.
  • FIG. 1 is a block diagram showing a digital system and a digital data device using an atomic clock or an atomic frequency standard using rubidium, cesium, hydrogen, and mercury.
  • Figure 2 is a block diagram showing a digital system and a digital device with a built-in atomic clock or atomic frequency standard using rubidium, cesium, hydrogen, and mercury.
  • Figure 3 is a block diagram showing a general-purpose computer or personal computer using an atomic clock or atomic frequency standard using rubidium, cesium, hydrogen, and mercury.
  • Figure 4 is a block diagram showing a supercomputer system using an atomic clock or atomic frequency standard using rubidium, cesium, hydrogen, and mercury.
  • FIG. 5 is a graph showing an example of a comparison effect of the arithmetic processing device with respect to the arithmetic speed and arithmetic complexity.
  • FIG. 6 is a graph illustrating an example of a comparison effect regarding an error correction capability with respect to an error.
  • FIG. 7 is a block diagram showing a digital system and a digital device in which a conventional crystal oscillator for a digital device has a built-in quartz crystal oscillator.
  • FIG. 8 shows a conventional digital device reference oscillator with a built-in crystal oscillator or a digital device clock signal generator that can input a reference signal from an external reference crystal oscillator, and an externally supplied digital device clock signal.
  • FIG. 2 is a block diagram showing a drivable digital system or digital device.
  • FIG. 9 is a block diagram showing a general-purpose computer or a personal computer in which a conventional crystal oscillator for a digital device has a plurality of built-in crystal oscillators.
  • FIG. 10 is a block diagram showing a conventional simulator using a supercomputer in which a plurality of crystal oscillators for a crystal are incorporated in a reference oscillator for digital equipment.
  • FIG. 11 is a block diagram showing a supercomputer system in which a plurality of crystal oscillators for a crystal are incorporated in a conventional reference oscillator for digital equipment.
  • FIG. 12 is a block diagram showing a conventional multi-computer system having a dynamic redundancy configuration in which a plurality of crystal oscillators for a crystal are incorporated in a reference oscillator for a digital device. Explanation of reference numerals
  • each device has one or more built-in crystal oscillators as reference oscillators for digital devices, and up to four or more crystal oscillators for clocks. Is built-in
  • An arithmetic processing unit including a storage device for a multi-computer system with a conventional dynamic redundancy configuration.Each device has one built-in crystal oscillator as a reference oscillator for digital equipment. Built-in two crystal oscillators with minimum configuration
  • 28A conventional desk-recording device for a multi-computer system with a dynamic redundancy configuration has one built-in crystal oscillator as a reference oscillator for digital devices for each device.
  • a conventional multi-computer system recording device with a dynamic redundancy configuration one crystal oscillator as a reference oscillator for digital devices is built in for each device, and two Built-in quartz crystal oscillator
  • a communication controller for multi-computer systems with a conventional dynamic redundancy configuration 3.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

Lorsque la stabilité de fréquence d'un oscillateur de référence pour dispositifs numériques n'est pas suffisante, une gigue est générée pendant le traitement, la transmission, l'enregistrement ou la reproduction de données numériques, ce qui augmente le taux d'erreurs de code. Même si la capacité de détection et la capacité de correction d'erreurs de code sont élevées, il reste beaucoup d'erreurs résiduelles après la correction d'erreurs de code, ce qui réduit les capacités de traitement de calcul, de transmission, d'enregistrement et de reproduction, exigeant une haute qualité. Afin de résoudre ce problème, il est possible d'employer une horloge atomique ou un dispositif standard de fréquence atomique (1) faisant appel à du rubidium, du césium, de l'hydrogène, ou du mercure pour l'oscillateur de référence pour dispositifs numériques, de sorte à obtenir une excellente stabilité de fréquence et une excellente précision de fréquence inhérentes à ces éléments, ce qui permet de réduire considérablement la génération de gigue pendant le traitement de calcul, la transmission, l'enregistrement et la reproduction de données numériques. En outre, la précision de synchronisation s'en trouve considérablement améliorée. Ce qui réduit les erreurs résiduelles générées même lors de l'utilisation de la technique de correction d'erreurs de code, et ce qui permet d'augmenter considérablement la capacité de traitement.
PCT/JP2003/004918 2002-04-25 2003-04-17 Traitement de calcul de donnees faisant appel a un oscillateur de reference pour un dispositif numerique et procede de transmission/enregistrement/reproduction WO2003091864A1 (fr)

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AU2003235212A AU2003235212A1 (en) 2002-04-25 2003-04-17 Data calculation processing using a reference oscillator for a digital device and a transmission/recording/reproduction method

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JP2002124463A JP2003316468A (ja) 2002-04-25 2002-04-25 デジタル機器用基準発振器を採用したデータ演算処理及び伝送記録再生方法
JP2002/124463 2002-04-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107342212A (zh) * 2017-07-18 2017-11-10 上海示方科技有限公司 一种电离源系统、氢原子频标

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9219938B2 (en) 2012-11-01 2015-12-22 Wheatstone Corporation System and method for routing digital audio data using highly stable clocks

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JPS62151002A (ja) * 1985-11-25 1987-07-06 ボ−ル、コ−パレイシヤン 原子周波数標準用一体化マイクロ波空胴共振器及び磁気遮蔽
JPH0378319A (ja) * 1989-08-21 1991-04-03 Res Dev Corp Of Japan レーザ励起ルビジウム原子発振器
JPH07219672A (ja) * 1994-01-28 1995-08-18 Fujitsu Ltd 高精度時計回路
JP2595791B2 (ja) * 1990-09-04 1997-04-02 日本電気株式会社 雑音データ処理方法とその装置
JPH11502683A (ja) * 1995-03-24 1999-03-02 ノーザン・テレコム・リミテッド ディジタル通信システム
US5896105A (en) * 1997-06-23 1999-04-20 Northrop Grumman Corporation Distributed phased array antenna system
JPH11118962A (ja) * 1997-10-09 1999-04-30 Nec Corp 標準時計装置
JP2000115210A (ja) * 1998-09-29 2000-04-21 Hewlett Packard Co <Hp> 分散システム
JP2001044979A (ja) * 1999-07-26 2001-02-16 Nec Corp クロック分配回路

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JPS62151002A (ja) * 1985-11-25 1987-07-06 ボ−ル、コ−パレイシヤン 原子周波数標準用一体化マイクロ波空胴共振器及び磁気遮蔽
JPH0378319A (ja) * 1989-08-21 1991-04-03 Res Dev Corp Of Japan レーザ励起ルビジウム原子発振器
JP2595791B2 (ja) * 1990-09-04 1997-04-02 日本電気株式会社 雑音データ処理方法とその装置
JPH07219672A (ja) * 1994-01-28 1995-08-18 Fujitsu Ltd 高精度時計回路
JPH11502683A (ja) * 1995-03-24 1999-03-02 ノーザン・テレコム・リミテッド ディジタル通信システム
US5896105A (en) * 1997-06-23 1999-04-20 Northrop Grumman Corporation Distributed phased array antenna system
JPH11118962A (ja) * 1997-10-09 1999-04-30 Nec Corp 標準時計装置
JP2000115210A (ja) * 1998-09-29 2000-04-21 Hewlett Packard Co <Hp> 分散システム
JP2001044979A (ja) * 1999-07-26 2001-02-16 Nec Corp クロック分配回路

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107342212A (zh) * 2017-07-18 2017-11-10 上海示方科技有限公司 一种电离源系统、氢原子频标
CN107342212B (zh) * 2017-07-18 2019-05-10 上海新示方科技有限公司 一种电离源系统、氢原子频标

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TW200400734A (en) 2004-01-01
AU2003235212A1 (en) 2003-11-10

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