CN103559038A

CN103559038A - Method and device for resisting interferences caused by periodical execution of software

Info

Publication number: CN103559038A
Application number: CN201310556495.1A
Authority: CN
Inventors: 杨培; 王胜利; 李旭芳; 李振
Original assignee: KT MICRO Inc
Current assignee: KT MICRO Inc; Beijing KT Micro Ltd
Priority date: 2013-11-11
Filing date: 2013-11-11
Publication date: 2014-02-05

Abstract

The invention relates to a method and a device for resisting interferences caused by periodical execution of software. The method comprises a step of adding the delay of change during the process of the periodical execution of the software. The device comprises a delay module which is used for adding the delay of change during the process of the periodical execution of the software. The invention also provides a chip which comprises an analog circuit, a digital circuit, a micro-control unit and the device. According to the method and the device provided by the invention, the interferences on a system caused by the periodical execution of the software can be eliminated.

Description

Anti-software cycle is carried out the method and apparatus of the interference causing

Technical field

The present invention relates to integrated circuit fields, relate in particular to the method and apparatus that a kind of anti-software cycle is carried out the interference causing.

Background technology

Chip all integrates mimic channel, digital circuit and microprocessor, and a chips has just been realized repertoire, thereby can effectively reduce the cost of development of electronic product, shortens the construction cycle, improves product competitiveness.Here the ANTENN AUDIO receiving chip of take describes as example, as shown in Figure 1, be the composition frame chart of prior art chips, this chip mainly contains three parts and forms, (Micro Control Unit is called for short: MCU) 13 to be respectively mimic channel 11, digital circuit 12 and micro-control unit.In mimic channel 11 finger chips, complete the modules of analog signal processing; In digital circuit 12 finger chips, complete the modules of digital signal processing; MCU13 for by software control mimic channel 11 and digital circuit 12 according to pre-provisioning request, complete corresponding function; When the function of mimic channel 11, after the function that the function of digital circuit 12 and chip will be realized determines, the control flow of MCU13 is also just substantially definite.

Because the order of software is carried out characteristic, so for the program of determining function, its execution time is certain, this is on not impact of digital circuit, but due to Integrated Trait, can form to mimic channel the undesired signal of one-period, this has just formed a noise spot on frequency spectrum.As shown in Figure 2, for a schematic flow sheet that software cycle is carried out in prior art, can comprise the steps:

Step 21, initialization module carry out initialization;

Step 22, the first calling module execution module A routine call;

Step 23, the second calling module execution module B routine call;

Step 24, the 3rd calling module execution module c program call, and perform step 22.

In schematic flow sheet shown in Fig. 2, because the execution time of modules A, module B and module C is fixed, so the execution time of whole software is just fixing, thereby inevitably formed the undesired signal of one-period, from frequency domain, just form a noise spot, caused the hydraulic performance decline of system.

Summary of the invention

The invention provides a kind of anti-software cycle and carry out the method and apparatus of the interference causing, in order to realize, eliminate the interference that software cycle execution causes system.

The invention provides a kind of anti-software cycle and carry out the method for the interference causing, comprising:

In the process of carrying out at described software cycle, add the time delay of variation.

The present invention also provides a kind of anti-software cycle to carry out the device of the interference causing, and comprising:

Time delay module, for the process of carrying out at described software cycle, adds the time delay of variation.

The present invention also provides a kind of chip, comprises mimic channel, digital circuit and micro-control unit, and described chip also comprises aforesaid device.

In embodiments of the present invention, in the process that time delay module is carried out at software cycle, add the time delay of variation, break the feature that software cycle is carried out, thereby break up noise spot, eliminate software cycle and carry out the interference that system is caused.

Accompanying drawing explanation

Fig. 1 is the composition frame chart of prior art chips;

Fig. 2 is a schematic flow sheet that software cycle is carried out in prior art;

Fig. 3 is the schematic flow sheet that the anti-software cycle of the present invention is carried out the embodiment of the method for the interference causing;

Fig. 4 is another schematic flow sheet that the anti-software cycle of the present invention is carried out the embodiment of the method for the interference causing;

Fig. 5 is another schematic flow sheet that the anti-software cycle of the present invention is carried out the embodiment of the method for the interference causing;

Fig. 6 is another schematic flow sheet that the anti-software cycle of the present invention is carried out the embodiment of the method for the interference causing.

Embodiment

Below in conjunction with specification drawings and specific embodiments, the invention will be further described.

As shown in Figure 3, for the anti-software cycle of the present invention, carry out a schematic flow sheet of the embodiment of the method for the interference causing, be with the difference of schematic flow sheet shown in Fig. 1, between step 22 and step 23, increased following steps:

Step 31, time delay module add the time delay of variation.

As shown in Figure 4, for the anti-software cycle of the present invention, carry out another schematic flow sheet of the embodiment of the method for the interference causing, be with the difference of schematic flow sheet shown in Fig. 3, step 31 is carried out between step 23 and step 24.

As shown in Figure 5, for the anti-software cycle of the present invention, carry out another schematic flow sheet of the embodiment of the method for the interference causing, can comprise the steps:

Step 51, initialization module carry out initialization;

Step 52, time delay module add the time delay of variation;

Step 53, the first calling module execution module A routine call;

Step 54, the second calling module execution module B routine call;

Step 55, the 3rd calling module execution module c program call, and perform step 52.

As shown in Figure 6, for the anti-software cycle of the present invention, carry out another schematic flow sheet of the embodiment of the method for the interference causing, can comprise the steps:

Step 61, initialization module carry out initialization;

Step 62, the first calling module execution module A routine call;

Step 63, the second calling module execution module B routine call;

Step 64, the 3rd calling module execution module c program call,

Step 65, time delay module add the time delay of variation, perform step 62.

Synthesizing map 3-Fig. 6 can find out, in the present embodiment, in the process that time delay module is carried out at software cycle, adds the time delay of variation, breaks the feature that software cycle is carried out, thereby breaks up noise spot, eliminates software cycle and carries out the interference that system is caused.

Alternatively, time delay module can adopt the method for software to generate the time delay changing, and advantage is that dirigibility is larger.

Alternatively, time delay module can comprise delay circuit and call unit, wherein, call unit is carried out the degree of delay circuit and is called, delay circuit is for generating the time delay of variation, thereby the method for employing software and hardware combining generates the time delay changing, and advantage is that dirigibility is large, speed.Alternatively, delay circuit can adopt digital circuit and or mimic channel realize.

Alternatively, the time delay of variation is specifically as follows random delay, and random delay can be broken the feature that software cycle is carried out, thereby breaks up noise spot, eliminates software cycle and carries out the interference that system is caused.

The present invention also provides a kind of chip, comprises mimic channel, digital circuit and micro-control unit, and chip can also comprise the device of the interference that an anti-software cycle execution causes, and this device can comprise aforesaid time delay module, does not repeat them here.

Finally it should be noted that: above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not depart from the spirit and scope of technical solution of the present invention.

Claims

1. anti-software cycle is carried out a method for the interference causing, it is characterized in that, comprising:

2. method according to claim 1, is characterized in that, the time delay of described variation is specially random delay.

3. method according to claim 1, is characterized in that, described in add the time delay of variation to be specially: add time delay software module, described time delay software module generates the time delay of described variation for the method that adopts software.

4. method according to claim 1, is characterized in that, described in add the time delay of variation to be specially: the degree of carrying out delay circuit is called, and described delay circuit is for generating the time delay of described variation.

5. anti-software cycle is carried out a device for the interference causing, it is characterized in that, comprising:

6. device according to claim 5, is characterized in that, the time delay of described variation is specially random delay.

7. device according to claim 5, is characterized in that, described time delay module adopts the method for software to generate the time delay of described variation.

8. device according to claim 5, is characterized in that, described time delay module comprises:

Delay circuit, for generating the time delay of described variation;

Call unit, for the process of carrying out at described software cycle, carries out the routine call of described delay circuit.

9. device according to claim 8, is characterized in that, described delay circuit adopts digital circuit and/or mimic channel to realize.

10. a chip, comprises mimic channel, digital circuit and micro-control unit, it is characterized in that, described chip also comprises the arbitrary described device of claim 5-9.