WO2015124047A1 - Method and device for waveform analysis - Google Patents

Abstract

A method and device for waveform analysis are provided. The method comprises: receiving sinusoidal waveforms comprising a number a of sinusoidal waves with the cycle Ta and for representing bits 0 and a number b of sinusoidal waves with the cycle Tb and for representing bits 1, wherein the cycle Ta is not equal to the cycle Tb and a and b are positive integers (101); obtaining square waveforms by sampling the sinusoidal waveforms (102); acquiring a pulse width Mi between an i-th rising edge and an i-th falling edge in the square waveform, wherein i is a positive integer smaller than or equal to the sum of a and b (103); comparing the pulse width Mi with half of a cycle T1 obtained in advance and with half of a cycle T0 obtained in advance to obtain a comparative result (104); and determining the bit represented by the square wave corresponding to the pulse width Mi according to the comparative result (105), which includes: if the pulse width Mi is equal to half of the cycle T1, the square wave corresponding to the pulse width Mi represents a bit 1; and if the pulse width Mi is equal to half of the cycle T0, the square wave corresponding to the pulse width Mi represents a bit 0.

Description

Method and device for analyzing waveform Technical field

The present invention relates to the field of electronic technologies, and in particular, to a method and apparatus for analyzing waveforms.

Background technique

The smart key device is a secure device with a signature function and/or a dynamic password generation function. When the smart key device communicates with a mobile terminal such as a mobile phone or a tablet through an audio interface, after the mobile terminal outputs a waveform, the smart key device samples the received waveform and parses out the bit corresponding to the waveform.

However, there is no solution in the prior art for parsing a waveform corresponding to an audio signal.

Summary of the invention

The present invention provides a method and apparatus for analyzing waveforms, the primary object of which is to provide an analysis scheme for waveforms when transmitting waveforms through an audio interface.

A method for analyzing a waveform according to the first aspect of the present invention includes: receiving a sine wave waveform, wherein the sine wave waveform includes a period of Ta for sine wave representing bit 0 and b periods of Tb a sine wave representing bit 1, wherein period Ta and period Tb are not equal, a and b are positive integers; sampling the sine wave waveform to obtain a square wave waveform; obtaining an ith rise in the square wave waveform a pulse width Mi between the edge and the i-th falling edge, where i is a positive integer less than or equal to the sum of a and b; the pulse width Mi is half of the pre-acquired period T1 and half of the pre-acquired period T0 Comparing, obtaining a comparison result; determining, according to the comparison result, a bit represented by a square wave corresponding to the pulse width Mi; wherein, according to the comparison result, determining a bit represented by the square wave corresponding to the pulse width Mi, comprising: if the pulse width Mi is equal to the period T1 In the half, the square wave corresponding to the pulse width Mi represents the bit 1; if the pulse width Mi is equal to half of the period T0, the square wave corresponding to the pulse width Mi represents the bit 0.

Wherein, according to the comparison result, determining the bit of the square wave representation of the pulse width Mi comprises: if the pulse width Mi is not equal to half of the period T1, nor equal to half of the period T0, determining whether the pulse width Mi is Within the error range of the pre-acquired period T1 or half of the period T0, if the pulse width Mi is within the error range of half of the period T1, it is determined that the square wave corresponding to the pulse width Mi represents the bit 1 if the pulse width Mi Within the error range of half of the period T0, it is determined that the square wave corresponding to the pulse width Mi represents bit 0.

A method for analyzing a waveform according to a second aspect of the present invention includes: receiving a sine wave waveform, wherein the sine wave waveform includes a sine wave for indicating bit 0 and b periods of Tb for period Ta a sine wave representing bit 1, wherein period Ta and period Tb are not equal, a and b are positive integers; and the sine wave waveform is taken Obtaining a square wave waveform; acquiring a pulse width Mi between the i-th rising edge and the i+1th rising edge of the square wave waveform, or acquiring the i-th falling edge and the first wave of the square wave waveform a pulse width Ni between i+1 falling edges, where i is a positive integer less than or equal to the sum of a and b; each pulse width obtained is compared with a pre-acquired period T1 and a pre-acquired period T0 And obtaining a comparison result; determining, according to the comparison result, a bit represented by a square wave corresponding to each pulse width; wherein, according to the comparison result, determining a bit of the square wave corresponding to each pulse width, including: if the pulse width Mi is equal to In the period T1, the square wave corresponding to the pulse width Mi represents the bit 1; if the pulse width Mi is equal to the period T0, the square wave corresponding to the pulse width Mi represents the bit 0.

The determining, according to the comparison result, the bit represented by the square wave corresponding to each pulse width, includes: if a certain pulse width is not equal to the period T1 or the period T0, determining whether the certain pulse width is In the error range of the pre-acquisition period T1 or the period T0, if the certain pulse width Mi is within the error range of the period T1, it is determined that the square wave corresponding to the certain pulse width represents the bit 1, if the certain one The pulse width Mi is within the error range of the period T0, and it is determined that the square wave corresponding to the certain pulse width Mi represents the bit 0.

Wherein, after acquiring the pulse width Mi or the pulse width Ni, before comparing each of the obtained pulse widths with the pre-acquired period T1 and the pre-acquired period T0, the method further comprises: determining the pulse width Mi and the pulse Whether the width Ni is between the period T0 and the period T1; if the pulse width Mi is between the period T0 and the period T1, the pulse width Ni is used as compared with the period T1 and the period T0 If the pulse width Ni is between the period T0 and the period T1, the pulse width Mi is taken as the pulse width used when comparing the period T1 and the period T0.

An apparatus for analyzing a waveform according to a third aspect of the present invention includes: a receiving module, configured to receive a sine wave waveform, wherein the sine wave waveform includes a sine wave and a plurality of periods Ta representing a bit 0 a sine wave representing a bit 1 of a period Tb, wherein the period Ta and the period Tb are not equal, a and b are positive integers; a sampling module for sampling the sine wave waveform to obtain a square wave waveform; a module for acquiring a pulse width Mi between an i-th rising edge and an i-th falling edge of the square wave waveform, wherein i is a positive integer less than or equal to a sum of a and b; a comparison module, configured to The pulse width Mi is compared with half of the pre-acquired period T1 and half of the pre-acquired period T0 to obtain a comparison result; and a determining module is configured to determine a bit represented by the square wave corresponding to the pulse width Mi according to the comparison result; The determining module is configured to: if the pulse width Mi is equal to half of the period T1, the square wave corresponding to the pulse width Mi represents bit 1; if the pulse width Mi is equal to half of the period T0, the pulse width Mi is Bit 0 represents the square wave.

The determining module includes: a determining unit, configured to determine whether the pulse width Mi is in a pre-acquisition period T1 or a period if the pulse width Mi is not equal to half of the period T1 or half of the period T0. a half of the error range of T0; a determining unit for determining that the square wave corresponding to the pulse width Mi represents bit 1 if the pulse width Mi is within an error range of half of the period T1, if the pulse width Mi is in a period Half of T0 Within the error range, it is determined that the square wave corresponding to the pulse width Mi represents bit 0.

An apparatus for analyzing a waveform according to a fourth aspect of the present invention includes: a receiving module, configured to receive a sine wave waveform, wherein the sine wave waveform includes a sine wave and a plurality of periods Ta representing a bit 0 a sine wave representing a bit 1 of a period Tb, wherein the period Ta and the period Tb are not equal, a and b are positive integers; a sampling module for sampling the sine wave waveform to obtain a square wave waveform; a module, configured to acquire a pulse width Mi between an i th rising edge and an i+1 th rising edge of the square wave waveform, or obtain an i th falling edge and an i+1 in the square wave waveform a pulse width Ni between the falling edges, where i is a positive integer less than or equal to the sum of a and b; a comparison module for respectively obtaining each pulse width obtained with the pre-acquired period T1 and the pre-acquired period T0 Comparing, obtaining a comparison result; determining a module, configured to determine, according to the comparison result, a bit of a square wave representation corresponding to each pulse width; wherein the determining module is configured to: if the pulse width Mi is equal to the period T1, the pulse width Mi corresponds 1 represents a bit square wave; and if the pulse width is equal to Mi cycle T0, the pulse width of the square wave corresponding to Mi represents 0 bits.

The determining module includes: a determining unit, configured to determine whether the pulse width is not equal to the period T1 or the period T0, and determine whether the pulse width is in the pre-acquired period T1 or the period T0. a determining unit, configured to determine, if the certain pulse width Mi is within an error range of the period T1, determining a square wave corresponding to the one pulse width to represent the bit 1 if the certain pulse width Mi is in a period Within the error range of T0, it is determined that the square wave corresponding to the certain pulse width Mi represents bit 0.

The device further includes: a determining module, configured to determine, after acquiring the pulse width Mi or the pulse width Ni, each pulse width obtained before comparing with the pre-acquired period T1 and the pre-acquired period T0 Whether the pulse width Mi and the pulse width Ni are between the period T0 and the period T1; and a selection module for using the pulse width Ni as the pulse width Mi between the period T0 and the period T1 The pulse width used when comparing the period T1 and the period T0; if the pulse width Ni is between the period T0 and the period T1, the pulse width Mi is used as the pulse width used when comparing the period T1 and the period T0.

A storage medium according to a fifth aspect of the present invention, comprising: a method for storing an application for performing the method of analyzing a waveform according to the first aspect of the present invention.

A storage medium according to a sixth aspect of the present invention, comprising: a method for storing an application for performing the method of analyzing a waveform according to the second aspect of the present invention.

According to the method embodiment provided by the present invention, when bits 0 and 1 are represented by transmitting waveforms of different periods, the bits represented by the square wave are determined by acquiring the pulse width of the square wave waveform, thereby realizing the analysis of the waveform.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description of the embodiments is required. BRIEF DESCRIPTION OF THE DRAWINGS The drawings in the following description are merely illustrative of some embodiments of the present invention and may be obtained by those of ordinary skill in the art Other drawings.

1 is a schematic flow chart of an embodiment of a method for analyzing a waveform according to the present invention;

2 is a schematic diagram of a method for determining a bit according to Embodiment 1 of the present invention;

3 is a schematic flow chart of another embodiment of a method for analyzing a waveform according to the present invention;

4 is a schematic diagram of a method for determining a bit according to Embodiment 2 of the present invention;

FIG. 5 is a schematic structural diagram of an apparatus for analyzing waveforms according to the present invention; FIG.

FIG. 6 is a schematic structural diagram of another embodiment of an apparatus for analyzing waveforms according to the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1

FIG. 1 is a schematic flow chart of an embodiment of a method for analyzing a waveform according to the present invention. The method embodiment shown in Figure 1 includes:

Step 101: Receive a sine wave waveform, wherein the sine wave waveform includes a sine wave for indicating bit 0 and a sine wave for indicating bit 1 with period B being Ta, wherein period Ta and The periods Tb are not equal, and a and b are positive integers.

The sinusoidal waveform is sent by the mobile terminal through the audio interface, and the smart key device is connected to the mobile terminal through the audio interface to achieve the purpose of receiving the sine wave waveform. The sine wave waveform includes two sine waves of different periods, representing bit 1 and bit 0, respectively.

Step 102: Sampling the sine wave waveform to obtain a square wave waveform.

The smart key device samples the received sinusoidal waveform according to a local sampling period, and obtains a square wave waveform according to the sampling result of the sampling point position.

Step 103: Acquire a pulse width Mi between the i-th rising edge and the i-th falling edge of the square wave waveform, where i≤a+b, and i is a positive integer.

Wherein, the detection of the rising edge and the falling edge can be detected by a level change, the pulse width of which can be determined according to the clock used by the waveform, and the pulse width Mi between the i-th rising edge and the i-th falling edge represents one Square wave period Half of it. In this step, the pulse width of the sum of a and b can be obtained.

Step 104: Comparing the pulse width Mi with half of the pre-acquired period T1 and half of the pre-acquired period T0 to obtain a comparison result;

The period T0 and the period T1 are obtained as follows:

The square wave waveform sequentially includes a waveform of the test data and a waveform of the valid data, wherein the bit sequence represented by the waveform of the test data is pre-negotiated, and the smart key device can acquire the bit in the waveform of the test data according to the bit sequence. A period corresponding to 0 and bit 1 is further obtained according to a period corresponding to bit 0 and bit 1 in the test data, and a period corresponding to bit 0 and bit 1 in the square wave waveform is obtained.

Step 105: Determine, according to the comparison result, a bit represented by a square wave corresponding to the pulse width Mi.

FIG. 2 is a schematic diagram of a method for determining a bit according to Embodiment 1 of the present invention. The process shown in Figure 2 includes:

Step 1051, determining whether the pulse width Mi is equal to half of the period T1 or half of the period T0;

If the pulse width Mi is equal to one of the half of the period T1 and the half of the period T0, then step 1052 and step 1053 are performed;

Step 1052, if the pulse width Mi is equal to half of the period T1, the square wave corresponding to the pulse width Mi represents bit 1;

Step 1053: If the pulse width Mi is equal to half of the period T0, the square wave corresponding to the pulse width Mi represents bit 0.

Step 1054, if the pulse width Mi is not equal to half of the period T1 and is not equal to half of the period T0, it is determined whether the pulse width Mi is within an error range of a pre-acquired period T1 or a half of the period T0;

Step 1055, if the pulse width Mi is within the error range of one half of the period T1, it is determined that the square wave corresponding to the pulse width Mi represents the bit 1;

Step 1056, if the pulse width Mi is within an error range of half of the period T0, it is determined that the square wave corresponding to the pulse width Mi represents bit 0.

The error range is caused by operations such as transmission delay. When the pulse width Mi is not equal to any one of T0 and T1, by judging whether the pulse width is within the allowable error range, the bit represented by the square wave waveform can be effectively analyzed to ensure complete analysis of the square wave.

The method embodiment provided by the present invention determines the bit represented by the square wave by acquiring the pulse width Mi between the i-th rising edge and the i-th falling edge when the bits 0 and 1 are represented by transmitting waveforms of different periods. Achieve the analysis of the waveform.

Embodiment 2

FIG. 3 is a schematic flow chart of another embodiment of a method for analyzing waveforms according to the present invention. Method embodiment shown in FIG. include:

Steps 201 and 202 are the same as steps 101 and 102, and are not described here.

Step 203: Acquire a pulse width Mi between the i-th rising edge and the i+1th rising edge of the square wave waveform, or obtain an i-th falling edge and an i+1th of the square wave waveform. a pulse width Ni between falling edges, where i ≤ a + b, and i is a positive integer;

Wherein, the pulse width between two adjacent rising edges or the pulse width between two adjacent falling edges represents a square wave period. In this step, the pulse width of the sum of a and b can be obtained. The selection of the rising edge or the falling edge depends on the level of the starting position of the first period of the square wave waveform, and if the level of the starting position of the first period is the rising edge, the two adjacent rising edges are acquired. The pulse width between the edges, if the level of the start position of the first cycle is a falling edge, the pulse width between the adjacent two falling edges is acquired.

Step 204: Compare each obtained pulse width with a pre-acquired period T1 and a pre-acquired period T0 to obtain a comparison result.

The period T0 and the period T1 are obtained as follows:

The square wave waveform sequentially includes a waveform of the test data and a waveform of the valid data, wherein the bit sequence represented by the waveform of the test data is pre-negotiated, and the smart key device can acquire the bit in the waveform of the test data according to the bit sequence. A period corresponding to 0 and bit 1 is further obtained according to a period corresponding to bit 0 and bit 1 in the test data, and a period corresponding to bit 0 and bit 1 in the square wave waveform is obtained.

Step 205: Determine, according to the comparison result, a bit represented by a square wave corresponding to each pulse width.

FIG. 4 is a schematic diagram of a method for determining a bit according to Embodiment 2 of the present invention. The process shown in Figure 4 includes:

Step 2051, determining whether the pulse width Mi is equal to half of the period T1 or half of the period T0;

If the pulse width Mi is equal to one of the half of the period T1 and one half of the period T0, then step 2052 and step 2053 are performed;

Step 2052, if the pulse width Mi is equal to the period T1, the square wave corresponding to the pulse width Mi represents the bit 1;

Step 2053, if the pulse width Mi is equal to the period T0, the square wave corresponding to the pulse width Mi represents bit 0.

Step 2054, a certain pulse width is not equal to the period T1, and is not equal to the period T0, and it is determined whether the certain pulse width is within the error range of the pre-acquired period T1 or the period T0;

Step 2055, if the certain pulse width Mi is within the error range of the period T1, it is determined that the square wave corresponding to the certain pulse width represents the bit 1;

Step 2056, if the certain pulse width Mi is within the error range of the period T0, it is determined that the square wave corresponding to the certain pulse width Mi represents the bit 0.

The error range is caused by operations such as transmission delay. When the pulse width Mi is not equal to any one of T0 and T1, the square wave waveform representation can be effectively resolved by judging whether the pulse width is within the allowable error range. The bit ensures the complete resolution of the square wave.

Optionally, after the pulse width Mi or the pulse width Ni is obtained, before each pulse width obtained is compared with the pre-acquired period T1 and the pre-acquired period T0, the method further includes:

Determining whether the pulse width Mi and the pulse width Ni are between the period T0 and the period T1;

If the pulse width Mi is between the period T0 and the period T1, the pulse width Ni is taken as the pulse width used when comparing the period T1 and the period T0; if the pulse width Ni is in the period T0 and the period T1 In between, the pulse width Mi is taken as the pulse width used when comparing the period T1 and the period T0.

In order to further accurately determine the pulse width used, the error pulse width is eliminated by judging whether the pulse width is within the two values, thereby obtaining how to correctly acquire a square wave period and improving the decoding precision.

The method provided by the present invention realizes the analysis of the waveform by determining the bit width of the square wave period by acquiring the pulse width of one square wave period when the bits 0 and 1 are represented by transmitting waveforms of different periods. Different from the first embodiment, in this embodiment, the bit represented by the square wave waveform is acquired by the pulse width of one cycle, and the bit width of the square wave waveform is acquired with the pulse width of one half cycle, and the determined bit is more accurate.

Embodiment 3

FIG. 5 is a schematic structural diagram of an apparatus for analyzing waveforms according to the present invention. The embodiment shown in Figure 5 includes:

The receiving module 301 is configured to receive a sine wave waveform, where the sine wave waveform includes a sine wave for indicating bit 0 and a sine wave for indicating bit 1 with period B being Ta, wherein The period Ta and the period Tb are not equal, and a and b are positive integers;

The sampling module 302 is connected to the receiving module 301, and is configured to sample the sine wave waveform to obtain a square wave waveform;

The obtaining module 303 is connected to the sampling module 302, and configured to acquire a pulse width Mi between the i-th rising edge and the i-th falling edge of the square wave waveform, where i≤a+b, and i is a positive integer;

The comparison module 304 is connected to the acquisition module 303 for comparing the pulse width Mi with half of the pre-acquired period T1 and half of the pre-acquired period T0 to obtain a comparison result;

The determining module 305 is connected to the comparing module 304, and configured to determine, according to the comparison result, a bit represented by a square wave corresponding to the pulse width Mi;

Wherein the determining module is configured to: if the pulse width Mi is equal to half of the period T1, the square wave corresponding to the pulse width Mi represents the bit 1; if the pulse width Mi is equal to half of the period T0, the pulse width Mi corresponds to The square wave represents bit 0.

The determining module 305 includes:

a judging unit, configured to determine whether the pulse width Mi is within an error range of a pre-acquired period T1 or a half of the period T0 if the pulse width Mi is not equal to half of the period T1 or equal to half of the period T0;

Determining unit for determining that the square wave corresponding to the pulse width Mi represents bit 1 if the pulse width Mi is within an error range of one half of the period T1, and if the pulse width Mi is within an error range of half of the period T0, Then, it is determined that the square wave corresponding to the pulse width Mi represents bit 0.

Of course, the above module division is only a schematic division, and the present invention is not limited thereto. The smart key device may further include: a receiving module, an acquiring module, an obtaining module, a comparing module, and a determining module, the receiving module performing a function related to receiving, the collecting module performing a function related to the collecting, acquiring the module performing and acquiring data, etc. Related functions, the comparison module performs the functions related to the comparison and the functions related to the determination module execution and determination, as long as the module division capable of achieving the object of the present invention falls within the scope of protection of the present invention.

The method embodiment provided by the present invention determines the bit represented by the square wave by acquiring the pulse width Mi between the i-th rising edge and the i-th falling edge when the bits 0 and 1 are represented by transmitting waveforms of different periods. Achieve the analysis of the waveform.

Embodiment 4

FIG. 6 is a schematic structural diagram of another apparatus for analyzing waveforms according to the present invention. The embodiment shown in Figure 6 includes:

The receiving module 401 is configured to receive a sine wave waveform, where the sine wave waveform includes a sine wave for indicating bit 0 and a sine wave for indicating bit 1 with period B being Ta, where The period Ta and the period Tb are not equal, and a and b are positive integers;

a sampling module 402, configured to sample the sine wave waveform to obtain a square wave waveform;

The obtaining module 403 is configured to acquire a pulse width Mi between the i-th rising edge and the i+1th rising edge of the square wave waveform, or obtain an i-th falling edge and an ith of the square wave waveform a pulse width Ni between +1 falling edges, where i ≤ a+b, and i is a positive integer;

The comparison module 404 is configured to compare each of the obtained pulse widths with the pre-acquired period T1 and the pre-acquired period T0 to obtain a comparison result;

The determining module 405 is configured to determine, according to the comparison result, a bit of the square wave representation corresponding to each pulse width.

The determining module 405 includes:

a determining unit, configured to determine whether the one pulse width is within an error range of the pre-acquired period T1 or the period T0 if the obtained one pulse width is not equal to the period T1 or the period T0;

Determining a unit, if the certain pulse width Mi is within the error range of the period T1, determining that the square wave corresponding to the certain pulse width represents the bit 1 if the error of the certain pulse width Mi is in the period T0 Within the range, determining that the square wave corresponding to the certain pulse width Mi represents bit 0;

Wherein the determining module is configured to: if the pulse width Mi is equal to the period T1, the square corresponding to the pulse width Mi The wave represents bit 1; if the pulse width Mi is equal to the period T0, the square wave corresponding to the pulse width Mi represents bit 0.

Wherein, the device further comprises:

a judging module, configured to determine a pulse width Mi and a pulse before comparing each of the obtained pulse widths with the pre-acquired period T1 and the pre-acquired period T0 after acquiring the pulse width Mi or the pulse width Ni Whether the width Ni is between the period T0 and the period T1;

a selection module for using a pulse width Ni as a pulse width used when compared with the period T1 and the period T0 if the pulse width Mi is between the period T0 and the period T1; if the pulse width Ni is in the Between the period T0 and the period T1, the pulse width Mi is used as the pulse width used when comparing the period T1 and the period T0.

Of course, the above module division is only a schematic division, and the present invention is not limited thereto. The smart key device may further include: a receiving module, an acquiring module, an obtaining module, a comparing module, and a determining module, the receiving module performing a function related to receiving, the collecting module performing a function related to the collecting, acquiring the module performing and acquiring data, etc. Related functions, the comparison module performs the functions related to the comparison and the functions related to the determination module execution and determination, as long as the module division capable of achieving the object of the present invention falls within the scope of protection of the present invention.

The method provided by the present invention realizes the analysis of the waveform by determining the bit width of the square wave period by acquiring the pulse width of one square wave period when the bits 0 and 1 are represented by transmitting waveforms of different periods. Different from the third embodiment, in this embodiment, the bit represented by the square wave waveform is acquired by the pulse width of one cycle, and the bit width of the square wave waveform is acquired with the pulse width of one half cycle, and the determined bit is more accurate.

Embodiment 5

The present invention also provides a storage medium comprising: a method for storing an application for executing the parsed waveform shown in the first embodiment.

Embodiment 6

The present invention further provides a storage medium, comprising: a method for storing an application for executing the parsing waveform shown in the second embodiment.

Any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a particular logical function or process. And the scope of the preferred embodiments of the invention includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in an opposite order depending on the functions involved, in the order shown or discussed. It will be understood by those skilled in the art to which the embodiments of the present invention pertain.

It should be understood that portions of the invention may be implemented in hardware, software, firmware or a combination thereof. In the above In this manner, multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

One of ordinary skill in the art can understand that all or part of the steps carried by the method of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, one or a combination of the steps of the method embodiments is included.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.

The above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is understood that the foregoing embodiments are illustrative and not restrictive Variations, modifications, alterations and variations of the above-described embodiments are possible within the scope of the invention. The scope of the invention is defined by the appended claims and their equivalents.

Claims (12)

1. A method for analyzing a waveform, comprising:

   Receiving a sinusoidal waveform, wherein the sinusoidal waveform includes a sine wave for indicating bit 0 and a period of sine for indicating bit 1 having a period of Ta, wherein period Ta and period Tb are not Equal, a and b are positive integers;

   Sampling the sine wave waveform to obtain a square wave waveform;

   Obtaining a pulse width Mi between the i-th rising edge and the i-th falling edge of the square wave waveform, where i≤a+b, and i is a positive integer;

   Comparing the pulse width Mi with half of the pre-acquired period T1 and half of the pre-acquired period T0 to obtain a comparison result;

   Determining, according to the comparison result, a bit represented by a square wave corresponding to the pulse width Mi;

   Wherein, according to the comparison result, the bit represented by the square wave corresponding to the pulse width Mi is determined, including:

   If the pulse width Mi is equal to half of the period T1, the square wave corresponding to the pulse width Mi represents bit 1; if the pulse width Mi is equal to half of the period T0, the square wave corresponding to the pulse width Mi represents bit 0.
2. The method according to claim 1, wherein the determining the bit of the square wave representation of the pulse width Mi according to the comparison result comprises:

   If the pulse width Mi is not equal to half of the period T1 and is not equal to half of the period T0, it is determined whether the pulse width Mi is within an error range of the pre-acquired period T1 or half of the period T0, if the pulse width Mi Within a half error range of the period T1, it is determined that the square wave corresponding to the pulse width Mi represents the bit 1, and if the pulse width Mi is within the error range of half of the period T0, the square wave representation bit corresponding to the pulse width Mi is determined. 0.
3. A method for analyzing a waveform, comprising:

   Receiving a sinusoidal waveform, wherein the sinusoidal waveform includes a sine wave for indicating bit 0 and a period of sine for indicating bit 1 having a period of Ta, wherein period Ta and period Tb are not Equal, a and b are positive integers;

   Sampling the sine wave waveform to obtain a square wave waveform;

   Obtaining a pulse width Mi between the i-th rising edge and the i+1th rising edge of the square wave waveform, or acquiring the i-th falling edge and the i+1th falling edge of the square wave waveform Between the pulse widths Ni, where i ≤ a + b, and i is a positive integer;

   Comparing each pulse width obtained with the pre-acquired period T1 and the pre-acquired period T0 to obtain a comparison result;

   Determining, according to the comparison result, a bit represented by a square wave corresponding to each pulse width;

   Wherein, according to the comparison result, the bits represented by the square wave corresponding to each pulse width are determined, including:

   If the pulse width Mi is equal to the period T1, the square wave corresponding to the pulse width Mi represents bit 1; if the pulse width Mi is equal to the period T0, the square wave corresponding to the pulse width Mi represents bit 0.
4. The method according to claim 3, wherein the determining, according to the comparison result, the bits of the square wave representation corresponding to each pulse width comprises:

   If a certain pulse width is not equal to the period T1 and is not equal to the period T0, it is determined whether the certain pulse width is within the error range of the pre-acquired period T1 or the period T0, if the certain pulse width Mi is in the period Within the error range of T1, it is determined that the square wave corresponding to the certain pulse width represents bit 1, and if the certain pulse width Mi is within the error range of the period T0, the square corresponding to the certain pulse width Mi is determined. The wave represents bit 0.
5. The method according to claim 3, characterized in that, after the pulse width Mi or the pulse width Ni is acquired, before each pulse width obtained is compared with the pre-acquired period T1 and the pre-acquired period T0, respectively The method also includes:

   Determining whether the pulse width Mi and the pulse width Ni are between the period T0 and the period T1;

   If the pulse width Mi is between the period T0 and the period T1, the pulse width Ni is taken as the pulse width used when comparing the period T1 and the period T0; if the pulse width Ni is in the period T0 and the period T1 In between, the pulse width Mi is taken as the pulse width used when comparing the period T1 and the period T0.
6. The method according to claim 4, characterized in that, after the pulse width Mi or the pulse width Ni is acquired, before each pulse width obtained is compared with the pre-acquired period T1 and the pre-acquired period T0, respectively The method also includes:

   Determining whether the pulse width Mi and the pulse width Ni are between the period T0 and the period T1;

   If the pulse width Mi is between the period T0 and the period T1, the pulse width Ni is taken as the pulse width used when comparing the period T1 and the period T0; if the pulse width Ni is in the period T0 and the period T1 In between, the pulse width Mi is taken as the pulse width used when comparing the period T1 and the period T0.
7. An apparatus for analyzing a waveform, comprising:

   a receiving module, configured to receive a sine wave waveform, wherein the sine wave waveform includes a sine wave for indicating bit 0 and a sine wave for indicating bit 1 with period B being Ta, wherein the period is Ta and period Tb are not equal, and a and b are positive integers;

   a sampling module, configured to sample the sine wave waveform to obtain a square wave waveform;

   An acquiring module, configured to acquire a pulse width Mi between the i-th rising edge and the i-th falling edge of the square wave waveform, where i≤a+b, and i is a positive integer;

   a comparison module, configured to compare the pulse width Mi with half of the pre-acquired period T1 and half of the pre-acquired period T0 to obtain a comparison result;

   a determining module, configured to determine, according to the comparison result, a bit represented by a square wave corresponding to the pulse width Mi;

   Wherein the determining module is configured to: if the pulse width Mi is equal to half of the period T1, the square wave corresponding to the pulse width Mi represents the bit 1; if the pulse width Mi is equal to half of the period T0, the pulse width Mi corresponds to The square wave represents bit 0.
8. The apparatus according to claim 7, wherein the determining module comprises:

   a judging unit, configured to determine whether the pulse width Mi is within an error range of a pre-acquired period T1 or a half of the period T0 if the pulse width Mi is not equal to half of the period T1 or equal to half of the period T0;

   Determining unit for determining that the square wave corresponding to the pulse width Mi represents bit 1 if the pulse width Mi is within an error range of one half of the period T1, and if the pulse width Mi is within an error range of half of the period T0, Then, it is determined that the square wave corresponding to the pulse width Mi represents bit 0.
9. An apparatus for analyzing a waveform, comprising:

   a receiving module, configured to receive a sine wave waveform, wherein the sine wave waveform includes a sine wave for indicating bit 0 and a sine wave for indicating bit 1 with period B being Ta, wherein the period is Ta and period Tb are not equal, and a and b are positive integers;

   a sampling module, configured to sample the sine wave waveform to obtain a square wave waveform;

   An acquiring module, configured to acquire a pulse width Mi between the i-th rising edge and the i+1th rising edge of the square wave waveform, or obtain an i-th falling edge and an i+th of the square wave waveform a pulse width Ni between one falling edge, where i ≤ a + b, and i is a positive integer;

   a comparison module, configured to compare each of the obtained pulse widths with a pre-acquired period T1 and a pre-acquired period T0 to obtain a comparison result;

   a determining module, configured to determine, according to the comparison result, a bit represented by a square wave corresponding to each pulse width;

   Wherein the determining module is configured to: if the pulse width Mi is equal to the period T1, the square wave corresponding to the pulse width Mi represents the bit 1; if the pulse width Mi is equal to the period T0, the square wave representing the pulse width Mi represents the bit 0.
10. The apparatus according to claim 9, wherein the determining module comprises:

    a determining unit, configured to determine whether the one pulse width is within an error range of the pre-acquired period T1 or the period T0 if the obtained one pulse width is not equal to the period T1 or the period T0;

    Determining a unit, if the certain pulse width Mi is within the error range of the period T1, determining that the square wave corresponding to the certain pulse width represents the bit 1 if the error of the certain pulse width Mi is in the period T0 Within the range, it is determined that the square wave corresponding to the certain pulse width Mi represents bit 0.
11. The device according to claim 9, wherein the device further comprises:

    The judging module is configured to determine whether the pulse width Mi and the pulse width Ni are compared before the pulse width Mi or the pulse width Ni is obtained, respectively, before each pulse width obtained is compared with the pre-acquired period T1 and the pre-acquired period T0 Between the period T0 and the period T1;

    a selection module for using a pulse width Ni as a pulse width used when compared with the period T1 and the period T0 if the pulse width Mi is between the period T0 and the period T1; if the pulse width Ni is in the Between the period T0 and the period T1, the pulse width Mi is used as the pulse width used when comparing the period T1 and the period T0.
12. The device according to claim 10, wherein the device further comprises:

    The judging module is configured to determine whether the pulse width Mi and the pulse width Ni are compared before the pulse width Mi or the pulse width Ni is obtained, respectively, before each pulse width obtained is compared with the pre-acquired period T1 and the pre-acquired period T0 Between the period T0 and the period T1;

    a selection module for using a pulse width Ni as a pulse width used when compared with the period T1 and the period T0 if the pulse width Mi is between the period T0 and the period T1; if the pulse width Ni is in the Between the period T0 and the period T1, the pulse width Mi is used as the pulse width used when comparing the period T1 and the period T0.

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