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Timer system and related method capable of dynamically compensating a difference of a timer

A technology of timer and compensation value, which is applied in the direction of instruments, electrical digital data processing, computers, etc., can solve the problems of unstable clock source and inability to achieve accurate timing, and achieve the effect of accurate timing

Active Publication Date: 2005-09-28
AUTOCHIPS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The aforementioned timer system has a major disadvantage: the clock source in most timers is unstable (unstable)
If the count value is equal to the threshold value after 4 events, then the timing work of the system will be correct. However, because this prior art has a static nature when calculating the compensation value (that is, only a fixed compensation value can be used) to correct), so there is no way to achieve the effect of accurate timing

Method used

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  • Timer system and related method capable of dynamically compensating a difference of a timer
  • Timer system and related method capable of dynamically compensating a difference of a timer
  • Timer system and related method capable of dynamically compensating a difference of a timer

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Embodiment Construction

[0026] see figure 1 , figure 1 It is a schematic diagram of an embodiment of the timer system of the present invention. The timer system 10 in this embodiment includes a timer 20, a tracking module (tracking module) 30, a calculation module 40, a compensation module 50, a first storage unit 60 (used to store a threshold value TH) , a second storage unit 70 (used to store a count value CV), a decision logic (ie the comparator 80), and a microprocessor (ie the controller 90). In addition, the tracking module 30 also includes a clock generator 32, which is used to provide a reference clock to correctly track an actual time between every two adjacent events (events) triggered by the timer 20. interval. However, since the clock generator 32 cannot send system interrupt information (interrupt), it can only be used to provide a reference clock, and cannot replace the function of the timer. As mentioned above, it is feasible to configure the timer system 10 as a software timer sys...

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Abstract

A timer system and a method capable of compensating a difference between a count value and a threshold value for the imprecision of a timer. The timer system includes a timer for repeatedly triggering a reference event according to a predetermined time interval; a first storage unit storing a threshold value; a second storage unit storing a count value corresponding to the triggered reference events; a tracking module tracking an actual time interval between a first reference event and a second reference event; a calculating module calculating a compensation value; a compensating module for reducing a difference between the count value and the threshold value; and a decision logic for generating the acknowledgement event if the count value is no longer less than the threshold value.

Description

technical field [0001] The invention relates to a timer system, in particular to a timer system and a related method capable of dynamically compensating the inaccuracy of the timer. Background technique [0002] Among various electronic devices, a timer system is an important component used to assist in the scheduling and management of various operations. Usually the working mode of the timer system is: tracking (tracking) changes in time, and after a certain amount of time has elapsed, (issue) warning information (alarm). [0003] As for the implementation of the timer system, it can be divided into two categories, namely software-based and hardware-based. The software timer system utilizes a microprocessor in an electronic device to execute a software timer program to poll a hardware timer set in the electronic device. The hardware timer sends an interrupt message (interrupt) to notify the microprocessor after a certain amount of time elapses. However, in addition to be...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/04G06F1/14G06F15/00
CPCG06F1/14
Inventor 丘伟源
Owner AUTOCHIPS