CN108667757A - Manchester code sampling processing method, module and decoder - Google Patents
Manchester code sampling processing method, module and decoder Download PDFInfo
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- CN108667757A CN108667757A CN201710187377.6A CN201710187377A CN108667757A CN 108667757 A CN108667757 A CN 108667757A CN 201710187377 A CN201710187377 A CN 201710187377A CN 108667757 A CN108667757 A CN 108667757A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M5/00—Conversion of the form of the representation of individual digits
- H03M5/02—Conversion to or from representation by pulses
- H03M5/04—Conversion to or from representation by pulses the pulses having two levels
- H03M5/06—Code representation, e.g. transition, for a given bit cell depending only on the information in that bit cell
- H03M5/12—Biphase level code, e.g. split phase code, Manchester code; Biphase space or mark code, e.g. double frequency code
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
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- Computer Networks & Wireless Communication (AREA)
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Abstract
A kind of Manchester code sampling processing method of offer of the embodiment of the present invention, module and decoder, belong to communication technique field.The method includes：N times sampling is carried out to the current half code element of Manchester code with the first clock frequency, obtains N number of sampled value of current half code element, the first clock frequency is N × 2 times that Manchester code transmits clock frequency, N ＞ 1；If more than half sampled values is an identical numerical value in N number of sampled value, it is determined that the virtual value of current half code element is the identical numerical value.The method to the current half code element of Manchester code with the first clock frequency of the transmission clock frequency of 2N times of Manchester code by carrying out multiple repairing weld processing, obtain the larger virtual value of the possibility of current half code element, Manchester code to effectively increase decoding end receives accuracy, and accordingly improves the Manchester code decoding accuracy of decoding end.
Description
Technical field
The present embodiments relate to communication technique field more particularly to a kind of Manchester code sampling processing method, modules
And decoder.
Background technology
Manchester code, also known as split phase code (Split Phase Code), belong to synchronised clock coding techniques, often by physics
Layer is used for encoding the clock and data of synchronous bit stream.Manchester code is the saltus step by level come to binary data
" 0 " and " 1 " is encoded, i.e., in a clock cycle, level saltus step from high to low indicates " 0 ", from low to high saltus step table
Show " 1 "；Or level saltus step from high to low indicates " 1 ", saltus step from low to high indicates " 0 ".
Wherein, a level saltus step corresponds to 1 all-key member or 2 " half code elements " in Manchester code.Namely
Say that 1 all-key member includes 2 " half code elements " in Manchester code, the value of half code element takes " 0 " or " 1 ", and half code element " 0 " indicates low electricity
Flat, half code element " 1 " indicates high level.For example, all-key member " 01 " indicates that level saltus step from low to high, all-key member " 10 " indicate level
Saltus step from high to low.
Manchester code in network communication field using relatively broad, when in use, usually first coding side pair two into
Data processed are encoded, and decoding end is then reached in a manner of serial transmission, and use is decoded by decoding end.But due to Man Chesi
Special code can be influenced in transmission process by factors such as signal interferences, and the level for being sometimes prone to generate some (a little) half code element exists
The phenomenon that being fluctuated in one clock cycle is dropped so as to cause the Manchester code of decoding end to receive accuracy
It is low, and then the Manchester code decoding accuracy of decoding end is caused also accordingly to reduce.
Invention content
In view of this, Manchester code sampling processing method, module and decoder provided in an embodiment of the present invention, with so that
The above-mentioned problems in the prior art is solved less.
The first aspect of the embodiment of the present invention provides a kind of Manchester code sampling processing method, and the Manchester code is adopted
Sample processing method includes：
A n times sampling) is carried out to the current half code element of Manchester code with the first clock frequency, obtains the N of current half code element
A sampled value, the first clock frequency are N × 2 times that Manchester code transmits clock frequency, N ＞ 1；
B) if sampled value more than half in N number of sampled value is an identical numerical value, it is determined that currently half code element is effective
Value is the identical numerical value.
Optionally, in a specific embodiment of the invention, step B is specially：If more than half sampling in N number of sampled value
Value is an identical numerical value, it is determined that the virtual value of current half code element is the identical numerical value, otherwise abandons current half code element.
Optionally, in an of the invention specific embodiment, when N=4, step B is further：
Step B1, if it is an identical numerical value to have 3 sampled values in 4 sampled values, it is determined that current half code element
Virtual value is the identical numerical value.
Optionally, in a specific embodiment of the invention, further include after step B：It determines new current half code element, and turns
It is continued to execute to the initial position of this method.
The second aspect of the embodiment of the present invention provides a kind of Manchester code sampling processing module, and the Manchester code is adopted
Sample processing module includes：Half code element sampling unit and sampled value processing unit, half code element sampling unit and sampled value processing unit
Connection；
Half code element sampling unit is used to carry out n times sampling to the current half code element of Manchester code with the first clock frequency,
N number of sampled value of current half code element is obtained, the first clock frequency is N × 2 times that Manchester code transmits clock frequency, N ＞ 1；
If sampled value processing unit is used to judge that sampled value more than half in N number of sampled value is an identical numerical value,
Determine that the virtual value of current half code element is the identical numerical value.
Optionally, in a specific embodiment of the invention, if sampled value processing unit is specifically used for judging 4 samplings
It is an identical numerical value to have 3 sampled values in value, it is determined that the virtual value of current half code element is the identical numerical value.
Optionally, in a specific embodiment of the invention, the Manchester code sampling processing module further includes：Redirect place
Manage unit；Processing unit is redirected to connect with half code element sampling unit and sampled value processing unit respectively；Processing unit is redirected to be used for
After the virtual value that sample processing unit determines current half code element, new current half code element is determined, so that half code element sampling unit
N times sampling is carried out to new current half code element with the first clock frequency, obtains N number of sampled value of new current half code element.
A kind of Manchester code decoder, the Manchester code decoder packet are provided in terms of third of the embodiment of the present invention
Include above-mentioned Manchester code sampling processing module；Manchester code sampling processing module is for identified current by it in real time
The virtual value of half code element exports.
Optionally, in a specific embodiment of the invention, the Manchester code decoder further includes：Synchronization character detects mould
Block and decoder module；Synchronization character detection module is connect with Manchester code sampling processing module and decoder module respectively；
Synchronization character detection module be used for according to Manchester code sampling processing module transfer come continuous half code element it is effective
Value detects pre-determined synchronization word, if it is detected that pre-determined synchronization word, it is determined that synchronous Manchester code data flow success；
If decoder module detects pre-determined synchronization word for synchronization character detection module, to graceful thorough after pre-determined synchronization word
This special code data stream is decoded.
By above technical scheme as it can be seen that the embodiment of the present invention passes through with the transmission clock frequency of 2N times of Manchester code
First clock frequency carries out multiple repairing weld processing to the current half code element of Manchester code, and the possibility for obtaining current half code element is larger
Virtual value, the Manchester code to effectively increase decoding end receives accuracy, and accordingly improves the graceful thorough of decoding end
This special code decodes accuracy.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments described in inventive embodiments can also obtain according to these attached drawings for those of ordinary skill in the art
Obtain other attached drawings.
Fig. 1 is the Manchester code sampling processing method flow diagram that the embodiment of the present invention one provides.
Fig. 2 is Manchester code sampling processing function structure chart provided by Embodiment 2 of the present invention.
Fig. 3 A are the Manchester code decoder architecture figure that the embodiment of the present invention three provides.
Fig. 3 B are the structure chart of the decoder module 33 in the embodiment of the present invention three.
Fig. 4 is that some electronics for the Manchester code sampling processing method that the application execution embodiment of the present invention one provides are set
Standby hardware architecture diagram.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical solution in the embodiment of the present invention, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described reality
It is a part of the embodiment of the embodiment of the present invention to apply example only, instead of all the embodiments.Based on the implementation in the embodiment of the present invention
Example, the every other embodiment that those of ordinary skill in the art are obtained should all belong to the range of protection of the embodiment of the present invention.
[embodiment one]
Fig. 1 is the Manchester code sampling processing method flow diagram that the embodiment of the present invention one provides.As shown in Figure 1, described
Manchester code sampling processing method method includes：
S11 carries out n times sampling to the current half code element of Manchester code with the first clock frequency, obtains current half code element
N number of sampled value, the first clock frequency be Manchester code transmit clock frequency N × 2 times, N ＞ 1.
For example, Manchester code is held with transmitting clock frequency 10MHz serial transmissions to sampling (decoding), due to Manchester
2 " half code element " (i.e. 2) constitute 1 all-key member in code, therefore to carry out n times sampling to one " half code element ", then should incite somebody to action
First clock frequency set of sampling end is N × 2 times of the transmission clock frequency 10MHz of Manchester code, i.e. the first clock frequency
The value of rate is (10M × 2N) Hz.In practical applications, the more accurate of the current half code element of Manchester code come is transmitted in order to obtain
N should be set as the integer more than 1, i.e., at least to be sampled 2 times or more to current half code element by true virtual value, usually sample 4 times i.e.
It can.Wherein, the first clock frequency can be obtained by being divided to system clock frequency.
S12, if sampled value more than half in N number of sampled value is an identical numerical value, it is determined that current half code element has
Valid value is the identical numerical value.
In this step, N number of sampled value is judged, if the sampled value for having more than half is an identical number,
The considerations of identical numerical value is set to the virtual value of current half code element, is mainly based upon Great possibility.By taking N=3 as an example, 3
In a sampled value, have 2 be " 1 ", 1 be " 0 ", then by more than half (about 66.67%) the i.e. possibility of accounting rate in sampled value compared with
Big " 1 " is determined as the virtual value of current half code element, and " 1 " is the identical numerical value herein.By taking N=4 as an example, sampled at 4
In value, there is that 3 sampled values are " 0 ", 1 sampled value is " 1 ", then by more than half (75%) the i.e. possibility of accounting rate in sampled value compared with
Big " 0 " is determined as the virtual value of current half code element, and " 0 " is the identical numerical value herein.It does so, deposits than in the prior art
Possibility using accounting rate be less than half numerical value it is much higher as the accuracy of the virtual value of current half code element.
Optionally, if there is no more than half sampled values being an identical numerical value in N number of sampled value, then it is assumed that work as first half
The virtual value of symbol malfunctions, and current half code element can be done to discard processing, and can do alarm or the processing that reports an error.If that is, described N number of
More than half sampled values is an identical numerical value in sampled value, it is determined that the virtual value of current half code element is the identical numerical value, otherwise
Abandon current half code element.By taking N=4 as an example, if having in 4 sampled values, 2 sampled values are " 0 ", 2 sampled values are " 1 ", can be recognized
Virtual value for current half code element is " 0 " as the possibility for " 1 " (being 50%), or it is also assumed that current coding
Member virtual value be not " 0 " and be not " 1 " possibility it is same.Therefore, in order to ensure current symbol virtual value it is correct
Rate should give up current half code element, and can report an error or alert process.
In, N can take the integer more than or equal to 2.Such as when N=2, " more than half " then refer to 2；When N=3, " mistake
Half " 2 or 3 are then referred to；When N=4, " more than half " then refer to 3 or 4；When N=5, " more than half " then refer to 3,4 or 5；When N=6,
" more than half " then refer to 4,5 or 6；And so on, it can obtain when N is qualified numerical value, the specific number of " more than half " meanings
Value.Wherein, if N be 2, it is " more than half " be 2 or N be 3, it is " more than half " be 2, since the number of sampled value is less, although passing through step
The accuracy rate of the virtual value of the obtained current half code elements of S12 is higher by much compared with the prior art, but accuracy rate is high not enough；If N
>=5, " more than half " to pass through the standard of the virtual value of the obtained current half code elements of step S12 although sampled value number is more for N-1
True rate is higher by much compared with the prior art, but may therefore cause to judge that number is more and increases the processing load of system.So
N generally takes 4 preferably, can make the accuracy rate of the virtual value of obtained current half code element compared with prior art height in this way, simultaneously
Therefore it excessively will not increase the processing load of system again.
For step S12, below by taking N=4 as an example, the realization side for the virtual value for determining current half code element is discussed in detail
Formula：
4 sampled values are judged successively according to sampling sequencing, if encountering satisfaction wherein there are 3 sampled values
It is equal when being an identical numerical value, then can directly determine that the virtual value of current half code element is the identical number, referring to following table.Its
In, when encountering first three sampled value and being an identical numerical value (by taking " 0 " as an example, when being " 1 " similarly), then can directly will " 0 " really
It is set to the virtual value of current half code element, without carrying out judgement processing to the 4th sampled value again, therefore is equivalent to improve and sentence
The efficiency of disconnected processing, correspondingly decreases the processing load of system.
| 1st sampled value | 1st sampled value | 1st sampled value | 1st sampled value | The virtual value of current half code element |
| 1 | 1 | 1 | It does not make a decision | 1 |
| 1 | 1 | 0 | 1 | 1 |
| 1 | 0 | 1 | 1 | 1 |
| 0 | 1 | 1 | 1 | 1 |
| 0 | 0 | 0 | It does not make a decision | 0 |
| 0 | 0 | 1 | 0 | 0 |
| 0 | 1 | 0 | 0 | 0 |
| 1 | 0 | 0 | 0 | 0 |
Specifically, in 4 sampled values of current half code element, if 1. preceding 3 sampled values are " 1 ", no matter the 4th adopt
Sample value is how many, i.e., no longer carries out judgement processing to the 4th sampled value, directly determines that the virtual value of current half code element is " 1 ".②
If preceding 3 sampled values are " 0 ", no matter the 4th sampled value is how many, i.e., no longer carries out judgement processing to the 4th sampled value,
Directly determine that the virtual value of current half code element is " 0 ".3. if preceding 3 sampled values are " 1 " " 1 " " 0 ", should be sampled according to the 4th
Value judges：If the 4th sampled value is " 1 ", it is determined that the virtual value of current half code element is " 1 "；Optionally, if the 4th
Sampled value is " 0 ", then since the accounting rate of " 0 " in sampled value and " 1 " is 50%, it is determined that the virtual value of current half code element goes out
Mistake does discard processing to current half code element, and can report an error or alert process.4. if preceding 3 sampled values are " 0 " " 0 " " 1 ",
It should be judged according to the 4th sampled value：If the 4th sampled value is " 0 ", determine that the virtual value of current half code element is " 0 "；It is optional
Ground, if the 4th sampled value is " 1 ", since the accounting rate of " 0 " in sampled value and " 1 " is 50%, it is determined that current half code element
Virtual value error, discard processing is done to current half code element, and can report an error or alert process.5. if preceding 2 sampled values are " 1 "
" 0 " should then be judged according to the 3rd, the 4th sampled value：When the 3rd and the 4th sampled value are " 1 ", just determination is worked as
The virtual value of preceding half code element is " 1 "；When the 3rd and the 4th sampled value are " 0 ", just the virtual value of determining current half code element is
“0”；Otherwise then since the accounting rate of " 0 " in sampled value and " 1 " is 50%, it is thus determined that the virtual value of current half code element goes out
Mistake does discard processing to current half code element, and can report an error or alert process.6. if preceding 2 sampled values are " 0 " " 1 ", root is answered
Judged according to the 3rd, the 4th sampled value：When the 3rd and the 4th sampled value are " 1 ", current half code element is just determined
Virtual value is " 1 "；When the 3rd and the 4th sampled value are " 0 ", just the virtual value of determining current half code element is " 0 "；Otherwise then
Since the accounting rate of " 0 " in sampled value and " 1 " is 50%, it is thus determined that the virtual value error of current half code element, to working as first half
Symbol does discard processing, and can report an error or alert process.Wherein, the 1. with the 2. kind judge processing mode due to not needing pair
4th sampled value is judged, therefore treatment effeciency wants higher.
Optionally, further include after step S12：
S13 determines new current half code element, and goes to step S11 and continue to execute.
After being handled current half code element according to step S11, S12, a new current half code element should be determined, such as
The adjacent half code element that next transmission of current half code element comes can be determined as new current half code element, and gone to step
S11 is continued to execute.Thus, the virtual value for transmitting each half code element come can be handled, it is graceful thorough to improve
Reliability, the accuracy of this special code.
The Manchester code sampling processing method that the present embodiment one provides, when by transmission with 2N times of Manchester code
First clock frequency of clock frequency carries out multiple repairing weld processing to the current half code element of Manchester code, and obtain current half code element can
The larger virtual value of energy property, the Manchester code to effectively increase decoding end receives accuracy, and accordingly improves decoding
The Manchester code at end decodes accuracy.
[embodiment two]
Fig. 2 is Manchester code sampling processing function structure chart provided by Embodiment 2 of the present invention.As shown in Fig. 2, described
Manchester code sampling processing module includes：Half code element sampling unit 21 and sampled value processing unit 22.Half code element sampling unit
21 connect with sampled value processing unit 22.
Half code element sampling unit 21 is used to carry out n times to the current half code element of Manchester code with the first clock frequency to adopt
Sample, obtains N number of sampled value of current half code element, and the first clock frequency is N × 2 times that Manchester code transmits clock frequency, N ＞
1。
If sampled value processing unit 22 is used to judge that sampled value more than half in N number of sampled value is an identical numerical value,
Then determine that the virtual value of current half code element is the identical numerical value.
Optionally, if sampled value processing unit 22 is additionally operable to judge that more than half sampled values is not present in N number of sampled value
When being an identical numerical value, then current half code element is abandoned.
Optionally, 4 N.
Optionally, if sampled value processing unit 22 is specifically used for judging to have in 4 sampled values 3 sampled values being one
Identical numerical value, it is determined that the virtual value of current half code element is the identical numerical value.
Optionally, sampled value processing unit 22 is further used for according to sampling sequencing successively to 4 sampled values
Judged, met when there are 3 sampled values to be an identical numerical value in 4 sampled values if meeting, directly determined and work as first half
The virtual value of symbol is the identical numerical value.
Optionally, the Manchester code sampling processing module further includes redirecting processing unit 23.Redirect processing unit 23
It is connect respectively with half code element sampling unit 21 and sampled value processing unit 22.Processing unit 23 is redirected in sample processing unit
After 22 determine the virtual value of current half code element, new current half code element is determined, so that half code element sampling unit is with the first clock frequency
Rate carries out n times sampling to new current half code element, obtains N number of sampled value of new current half code element.
For example, next adjacent half code element of current half code element can be determined as new to work as first half code by redirecting processing unit 23
Member is handled by sampled value processing unit 21.
The Manchester code sample processing unit that the present embodiment two provides is particularly used in described in execution embodiment one
Manchester code sampling processing method, realization principle, function, purposes etc. are similar with embodiment one, and details are not described herein.
[embodiment three]
Fig. 3 A are the Manchester code decoder architecture figure that the embodiment of the present invention three provides.As shown in Figure 3A, described graceful thorough
This special code decoder includes the Manchester code sampling processing module 31 in embodiment two.Manchester code sampling processing module 31
For the virtual value of its identified current half code element to be exported in real time.
Optionally, Manchester code decoder further includes synchronization character detection module 32 and decoder module 33.Synchronization character is examined
Module 32 is surveyed to connect with Manchester code sampling processing module 31 and decoder module 33 respectively.
Manchester code sampling processing module 31 in real time exports the virtual value of its identified current half code element to same
Walk word detection module.
Synchronization character detection module 32 be used for according to Manchester code sampling processing module 31 transmit come continuous half code element
RMS to DC goes out pre-determined synchronization word, if it is detected that pre-determined synchronization word, it is determined that synchronous Manchester code data flow success.
Decoder module 33 is used for after synchronization character detection module 32 detects pre-determined synchronization word, after pre-determined synchronization word
Manchester code data flow is decoded.
As shown in Figure 3B, optionally, decoder module 33 includes：Character conversion unit 33A and CRC (Cyclic
Redundancy Check, cyclic redundancy check) detection unit 33B.Character conversion unit 33A connects with CRC detection units 33B
It connects.
Character conversion unit 33A is used for for turning into line character to the Manchester code data flow after pre-determined synchronization word
Processing is changed such as serioparallel exchange.
CRC detection units 33B is used for carrying out cyclic redundancy school by the data obtained by character conversion unit 33A conversion process
It tests, if verifying successfully, exports corresponding effective word.
Optionally, the Manchester code decoder further includes frequency division module 34.Frequency division module 34 is adopted with Manchester code
Sample processing module 31 connects.
Frequency division module 34 is for dividing system clock, to provide first to Manchester code sampling processing module 31
Clock frequency.
Optionally, the Manchester code decoder further includes digit counter module 35.Position count processing module 35 with it is same
Word detection module 32 is walked to connect.
Digit counter module 35 is used for after synchronization character detection module detects pre-determined synchronization word, to the pre-determined synchronization word
Manchester code data flow later is counted.
The Manchester code decoder that the present embodiment three provides, by the Manchester code sampling processing module to graceful thorough
This special code carries out sampling processing, has obtained the higher Manchester code of reliability, accuracy, and then may make the decoder to graceful
The decoding accuracy of Che Site codes further increases.
Fig. 4 is that some electronics for the Manchester code sampling processing method that the application execution embodiment of the present invention one provides are set
Standby hardware architecture diagram.As shown in figure 4, the electronic equipment includes：One or more processors 410 and memory 420,
In Fig. 4 by taking a processor 410 as an example.
The equipment for executing the Manchester code sampling processing method can also include：Input unit 430 and output fill
Set 440.
Processor 410, memory 420, input unit 430 and output device 440 can pass through bus or other modes
It connects, in Fig. 4 for being connected by bus.
Memory 420 is used as a kind of non-volatile computer readable storage medium storing program for executing, can be used for storing non-volatile software journey
Sequence, non-volatile computer executable program and module, such as the Manchester code sampling processing in the embodiment of the present application
Corresponding program instruction/the module of method.Processor 410 by operation be stored in non-volatile software program in memory 420,
Instruction and module, the various function application to execute server and data processing, that is, realize that the Manchester code is adopted
Sample processing method.
Memory 420 may include storing program area and storage data field, wherein storing program area can store operation system
System, the required application program of at least one function；Storage data field can store according to embodiments of the present invention two or three offers
Manchester code sampling processing module uses created data etc..In addition, memory 420 may include high random access
Memory 420, can also include nonvolatile memory 420, a for example, at least magnetic disk storage 420, flush memory device or
Other non-volatile solid state memories 420.In some embodiments, it includes remote relative to processor 410 that memory 420 is optional
The memory 420 of journey setting, these remote memories 420 can pass through network connection to the Manchester code sampling processing mould
Block.The example of above-mentioned network includes but not limited to internet, intranet, LAN, mobile radio communication and combinations thereof.
Input unit 430 can receive the number or character information of input, and generate and the code information handling device
User setting and function control related key signals input.Input unit 430 may include pressing the equipment such as module.
One or more of modules are stored in the memory 420, when by one or more of processors
When 410 execution, the Manchester code sampling processing method is executed.
The said goods can perform the method that the corresponding embodiment of the application is provided, and have the corresponding function module of execution method
And advantageous effect.The not technical detail of detailed description in the present embodiment, reference can be made to the side that the corresponding embodiment of the application is provided
Method.
The electronic equipment of the embodiment of the present application exists in a variety of forms, including but not limited to:
(1) mobile communication equipment:The characteristics of this kind of equipment is that have mobile communication function, and to provide speech, data
Communication is main target.This Terminal Type includes:Smart mobile phone (such as iPhone), multimedia handset, functional mobile phone and low
Hold mobile phone etc..
(2) super mobile personal computer equipment:This kind of equipment belongs to the scope of personal computer, there is calculating and processing work(
Can, generally also have mobile Internet access characteristic.This Terminal Type includes:PDA, MID and UMPC equipment etc., such as iPad.
(3) portable entertainment device:This kind of equipment can show and play multimedia content.Such equipment includes:Audio,
Video player (such as iPod), handheld device, e-book and intelligent toy and portable car-mounted navigation equipment.
(4) server:The equipment for providing the service of calculating, the composition of server include that processor, hard disk, memory, system are total
Line etc., server is similar with general computer architecture, but due to needing to provide highly reliable service, in processing energy
Power, stability, reliability, safety, scalability, manageability etc. are more demanding.
(5) other electronic devices with data interaction function.
The apparatus embodiments described above are merely exemplary, wherein the module illustrated as separating component can
It is physically separated with being or may not be, the component shown as module may or may not be physics mould
Block, you can be located at a place, or may be distributed on multiple network modules.It can be selected according to the actual needs
In some or all of module achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case of, you can to understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It is realized by the mode of software plus required general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be expressed in the form of software products in other words, should
Computer software product can store in a computer-readable storage medium, the computer readable recording medium storing program for performing include for
Any mechanism of the readable form storage of computer (such as computer) or transmission information.For example, machine readable media includes only
Read memory (ROM), random access memory (RAM), magnetic disk storage medium, optical storage media, flash medium, electricity, light,
The transmitting signal (for example, carrier wave, infrared signal, digital signal etc.) etc. of sound or other forms, which includes
Some instructions are used so that a computer equipment (can be personal computer, server or the network equipment etc.) executes respectively
Method described in certain parts of a embodiment or embodiment.
Certainly, implementing any technical solution of the embodiment of the present invention must be not necessarily required to reach simultaneously above all excellent
Point.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described the invention in detail with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：It is still
Either which part or all technical features can be carried out so that technical scheme described in the above embodiments is modified
Equivalent replacement；And these modifications or replacements, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (10)
1. a kind of Manchester code sampling processing method, which is characterized in that including：
A n times sampling) is carried out to the current half code element of Manchester code with the first clock frequency, the N number of of current half code element is obtained and adopts
Sample value, the first clock frequency are N × 2 times that Manchester code transmits clock frequency, N ＞ 1；
B) if sampled value more than half in N number of sampled value is an identical numerical value, it is determined that currently the virtual value of half code element is
The identical numerical value.
2. Manchester code sampling processing method according to claim 1, which is characterized in that step B is specially：If described
More than half sampled values is an identical numerical value in N number of sampled value, it is determined that the virtual value of current half code element is the identical numerical value, no
Then abandon current half code element.
3. Manchester code sampling processing method according to claim 1, which is characterized in that when N=4, step B is further
For：
B1) if it is an identical numerical value to have 3 sampled values in 4 sampled values, it is determined that currently the virtual value of half code element is
The identical numerical value.
4. Manchester code sampling processing method according to claim 3, which is characterized in that step B1 is specially：According to
Sampling sequencing successively judges 4 sampled values, if meeting to meet in 4 sampled values has 3 sampled values equal
For an identical numerical value when, then directly determine current half code element virtual value be the identical numerical value.
5. Manchester code sampling processing method according to claim 1 or 2, which is characterized in that also wrapped after step B
It includes：Determine new current half code element, and the initial position for going to this method continues to execute.
6. a kind of Manchester code sampling processing module, which is characterized in that including：Half code element sampling unit and sampled value processing are single
Member, half code element sampling unit are connect with sampled value processing unit；
Half code element sampling unit is used to carry out n times sampling to the current half code element of Manchester code with the first clock frequency, obtains
N number of sampled value of current half code element, the first clock frequency are N × 2 times that Manchester code transmits clock frequency, N ＞ 1；
If sampled value processing unit is for judging that sampled value more than half in N number of sampled value is an identical numerical value, it is determined that
The virtual value of current half code element is the identical numerical value.
7. Manchester code sampling processing module according to claim 6, which is characterized in that sampled value processing unit is specific
If for judging that it is an identical numerical value to have 3 sampled values in 4 sampled values, it is determined that currently the virtual value of half code element is
The identical numerical value.
8. Manchester code sampling processing module according to claim 6, which is characterized in that further include：It is single to redirect processing
Member；Processing unit is redirected to connect with half code element sampling unit and sampled value processing unit respectively；Processing unit is redirected for adopting
After sample processing unit determines the virtual value of current half code element, new current half code element is determined, so that half code element sampling unit is with the
One clock frequency carries out n times sampling to new current half code element, obtains N number of sampled value of new current half code element.
9. a kind of Manchester code decoder, which is characterized in that including such as claim 6~8 any one of them Manchester
Code sampling processing module；Manchester code sampling processing module is in real time by the virtual value of its identified current half code element
Output.
10. Manchester code decoder according to claim 9, which is characterized in that further include：Synchronization character detection module with
And decoder module；Synchronization character detection module is connect with Manchester code sampling processing module and decoder module respectively；
Synchronization character detection module be used for according to Manchester code sampling processing module transfer come continuous half code element virtual value inspection
Pre-determined synchronization word is measured, if it is detected that pre-determined synchronization word, it is determined that synchronous Manchester code data flow success；
If decoder module detects pre-determined synchronization word for synchronization character detection module, to Manchester after pre-determined synchronization word
Code data stream is decoded.
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