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Monitoring apparatus and program

A monitoring device, oscillation frequency technology, applied in the direction of output stability, electrical components, resonant circuit with a central processing unit, etc., can solve problems such as predicting the oscillation frequency of the oscillator, and not being able to properly correct the oscillation frequency

Inactive Publication Date: 2013-01-09
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In a conventional system having an oscillator, when an unexpected behavior occurs due to aging or environmental changes, the oscillation frequency of the oscillator cannot be predicted by the predicted value, and the oscillation may not be properly corrected even if the predicted value is used for correction. frequency problem

Method used

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  • Monitoring apparatus and program
  • Monitoring apparatus and program
  • Monitoring apparatus and program

Examples

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Embodiment Construction

[0040] The present invention monitors the oscillation frequency of an oscillator in a system after shipment, and controls the oscillator so as to correct the oscillation frequency before the fluctuation of the oscillation frequency exceeds the allowable range of the system. In this way, by correcting fluctuations in the oscillation frequency due to environmental changes such as aging and seasonal changes, highly accurate and stable oscillation outputs can be obtained, which can be used in system clocks and the like. In addition, the monitoring of the oscillation frequency is performed during the operation of the system, but the correction of the oscillation frequency is not limited to the operation of the system as long as the system receives information for correcting the oscillation frequency.

[0041] In addition, it is possible to estimate the variation of the oscillation frequency due to aging or environmental changes to the necessary minimum, and correspondingly, it is po...

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Abstract

A monitoring apparatus monitors a system including an oscillator with a variable oscillation frequency. The monitoring apparatus has a transmitting unit to transmit an information collecting instruction for collecting state information of the system to the system at an arbitrary monitoring timing, and a control unit to perform a control operation that includes transmitting to the system control information for controlling the oscillation frequency to become a reference value or less if the oscillation frequency exceeds the reference value, and computing a changing amount of the oscillation frequency at least due to aging and a next monitoring timing.

Description

technical field [0001] The present invention relates to a monitoring device and a monitoring method, and more particularly to a monitoring device for a system having an oscillator and a monitoring method for making a computer function as the above-mentioned monitoring device. [0002] In the present invention, the monitoring device refers to a device having a function of monitoring the state of a system to be monitored and controlling the system, specifically, an oscillator in the system based on the monitoring result. Background technique [0003] Systems with oscillators are used in various electronic devices such as cellular phones. In such a system, since various operations are performed based on the oscillation frequency of the oscillator, it is necessary to keep the oscillation frequency constant. However, in reality, the oscillation frequency of the oscillator fluctuates for various reasons. [0004] Causes of fluctuations in the oscillation frequency of the oscilla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03B5/32H03B1/00H03B5/04
CPCH03L1/022H03J7/02H03J1/0008
Inventor 岸正一
Owner FUJITSU LTD
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