CN105357532A - Compression method, uncompression method, compression apparatus and uncompression apparatus - Google Patents
Compression method, uncompression method, compression apparatus and uncompression apparatus Download PDFInfo
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- CN105357532A CN105357532A CN201510752035.5A CN201510752035A CN105357532A CN 105357532 A CN105357532 A CN 105357532A CN 201510752035 A CN201510752035 A CN 201510752035A CN 105357532 A CN105357532 A CN 105357532A
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Abstract
The invention discloses a compression method, an uncompression method, a compression apparatus and an uncompression apparatus used for an ASCII format data flow in medical high-voltage generator serial communications. The compression method comprises the steps of receiving the ASCII format first data flow; judging whether data with continuous same value exists in the first data flow or not; if so, separately recording the value and the value of number of each group of data; judging whether each value of number is greater than or equal to a preset value of the value of number; when each value of number is greater than or equal to the preset value of the value of number, generating a data string including a plurality of ASCII characters, value of data corresponding to the value of number and the value of number in sequence; generating a compressed second data flow including a plurality of data strings, data that are not continuously the same in the first data flow and the data that are continuously the same in the first data flow and the value of number is less than the preset value of the value of number. According to the compression method, the transmission data size in the serial communication can be reduced and the serial communication efficiency is improved.
Description
Technical field
The present invention relates to data compression, decompression field, be specifically related to a kind of compression method, decompression method, compression set and decompressing device, especially relate to for the compression method of ASC II formatted data stream in medical high pressure generator serial communication, decompression method, compression set and decompressing device.
Background technology
What adopt between current most of medical high pressure generator and PC control desk is the mode of serial communication.Medical high pressure generator is for driving the bulb in the equipment such as DR, CT, and bulb can produce X ray under the driving of medical high pressure generator, and in order to ensure that equipment can safely and steadily run, high pressure generator must have very high real-time control overflow.
And owing to transmitting according to original data stream in traditional serial communication, data flow is not compressed, the efficiency of transmission of data flow is lower, so the mode execution speed of this serial communication between medical high pressure generator and PC control desk is slower, communication time is longer, make cannot realize quick response between medical high pressure generator and PC control desk, the speed of response is low.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome the low defect of the efficiency of transmission of ASC II formatted data stream in medical high pressure generator serial communication of the prior art.
For this reason, a kind of compression method for ASC II formatted data stream in medical high pressure generator serial communication of the present invention, comprises the steps:
Receive the first data flow of ASC II form;
Judge whether there are the data with consecutive identical value in described first data flow;
When existence in described first data flow has the data of consecutive identical value, record the value and a numerical value of often organizing described data respectively;
Judge whether each described numerical value is more than or equal to number preset value respectively;
When described numerical value is more than or equal to number preset value, generates and comprise the value of data corresponding to several ASC II characters, described numerical value and the serial data of described numerical value in turn;
Generate the second data flow after compression, described second data stream packets containing serial data described in several, described first data flow intermediate value discontinuous phase with data and described first data flow intermediate value consecutive identical and individual numerical value is less than the data of number preset value.
Preferably, several ASC II characters described comprise character "! ", one or more in character " % " and character " $ ".
Preferably, the described method generating the second data flow after compressing comprises:
Described first data flow intermediate value discontinuous phase with data and described first data flow intermediate value consecutive identical and data the putting in order in described second data flow that individual numerical value is less than number preset value to arrange according to its former putting in order in described first data flow;
The corresponding position that each described serial data is arranged at described second data flow, consecutive identical with corresponding one group of the described serial data arrangement position of data in described first data flow is identical.
Preferably, also comprise the steps:
When there are not the data with consecutive identical value in described first data flow or all described numerical value is all less than number preset value, generate the 3rd data flow, described 3rd data stream packets containing all data in described first data flow, and in described 3rd data flow data to put in order with it in described first data flow former put in order identical.
A kind of decompression method for ASC II formatted data stream in medical high pressure generator serial communication of the present invention, comprises the steps:
Receive the first data flow of ASC II form;
Judge whether there is ASC II character string in described first data flow, described ASC II character string comprises several ASC II characters;
When there is ASC II character string in described first data flow, record the first data and the second data that are close to after often organizing described ASC II character string respectively;
Respectively for often organize described ASC II text string generation comprise described second data amount check, value is the serial data of described first data;
The second data flow after generating solution compression, described second data stream packets is containing other data in serial data described in several and described first data flow except described ASC II character string, the first data and the second data.
Preferably, several ASC II characters described comprise character "! ", one or more in character " % " and character " $ ".
Preferably, the method for the second data flow after described generating solution compression comprises:
Other data in described first data flow except described ASC II character string, the first data and the second data putting in order in described second data flow arranges according to its former putting in order in described first data flow;
The corresponding position that each described serial data is arranged at described second data flow, corresponding with the described serial data arrangement position of one group of ASC II character string, the first data and second data in described first data flow is identical.
Preferably, also comprise the steps:
When there is not ASC II character string in described first data flow, generate the 3rd data flow, described 3rd data stream packets containing all data in described first data flow, and in described 3rd data flow data to put in order with it in described first data flow former put in order identical.
A kind of compression set for ASC II formatted data stream in medical high pressure generator serial communication of the present invention, comprising:
Receiving element, for receiving the first data flow of ASC II form;
First judging unit, for judging whether there are the data with consecutive identical value in described first data flow;
Record cell, for when existence in described first data flow has the data of consecutive identical value, records the value and a numerical value of often organizing described data respectively;
Second judging unit, for judging whether each described numerical value is more than or equal to number preset value respectively;
First generation unit, for when described numerical value is more than or equal to number preset value, generates and comprises the value of data corresponding to several ASC II characters, described numerical value and the serial data of described numerical value in turn;
Second generation unit, for generating the second data flow after compression, described second data stream packets containing serial data described in several, described first data flow intermediate value discontinuous phase with data and described first data flow intermediate value consecutive identical and individual numerical value is less than the data of number preset value.
Preferably, several ASC II characters described comprise character "! ", one or more in character " % " and character " $ ".
Preferably, also comprise:
3rd generation unit, for when there are not the data with consecutive identical value in described first data flow or all described numerical value is all less than number preset value, generate the 3rd data flow, described 3rd data stream packets containing all data in described first data flow, and in described 3rd data flow data to put in order with it in described first data flow former put in order identical.
A kind of decompressing device for ASC II formatted data stream in medical high pressure generator serial communication of the present invention, comprising:
Receiving element, for receiving the first data flow of ASC II form;
Judging unit, for judging whether there is ASC II character string in described first data flow, described ASC II character string comprises several ASC II characters;
Record cell, for when there is ASC II character string in described first data flow, records the first data and the second data that are close to after often organizing described ASC II character string respectively;
First generation unit, for respectively for often organize described ASC II text string generation comprise described second data amount check, value is the serial data of described first data;
Second generation unit, for the second data flow after generating solution compression, described second data stream packets is containing other data in serial data described in several and described first data flow except described ASC II character string, the first data and the second data.
Preferably, several ASC II characters described comprise character "! ", one or more in character " % " and character " $ ".
Preferably, also comprise:
3rd generation unit, for when there is not ASC II character string in described first data flow, generate the 3rd data flow, described 3rd data stream packets containing all data in described first data flow, and in described 3rd data flow data to put in order with it in described first data flow former put in order identical.
Technical solution of the present invention, tool has the following advantages:
The compression method that the embodiment of the present invention provides and device, by judging whether there are the data with consecutive identical value in the first data flow, when existence has the data of consecutive identical value, the coded system of the value+individual numerical value of the ASC II character+data data identical to this partial continuous are adopted to compress, thus reduce the data volume of the data flow needing transmission, particularly can when there is a large amount of repeating data in medical high pressure generator serial communication, the reduction volume of data volume can be particularly outstanding.Due to the reduction greatly of data volume that will transmit, so substantially reduce communication time, drastically increase the efficiency of transmission of ASC II formatted data stream in medical high pressure generator serial communication, and then the quick response of serial communication between medical high pressure generator and PC control desk can be realized.
The decompression method that the embodiment of the present invention provides and device, by judging whether there is ASC II character string in the first data flow, when there is ASC II character string, by obtaining the first data and the second data, generate comprise the second data amount check, value is the serial data of the first data, achieve the decompression to the first data flow, thus indiscriminately can complete decompression process, improve the accuracy rate of serial communication between medical high pressure generator and PC control desk, and then achieve quick response.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the specific embodiment of the invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart for a concrete example of the compression method of ASC II formatted data stream in medical high pressure generator serial communication in the embodiment of the present invention 1;
Fig. 2 is the flow chart for a concrete example of the decompression method of ASC II formatted data stream in medical high pressure generator serial communication in the embodiment of the present invention 2;
Fig. 3 is the structured flowchart for a concrete example of the compression set of ASC II formatted data stream in medical high pressure generator serial communication in the embodiment of the present invention 3.
Embodiment
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
In addition, if below in the described different execution mode of the present invention involved technical characteristic do not form conflict each other and just can be combined with each other.
Embodiment 1
The present embodiment provides a kind of compression method for ASC II formatted data stream in medical high pressure generator serial communication, and as shown in Figure 1, the method comprises the steps:
First data flow of S11, reception ASC II form.
S12, judge in the first data flow, whether to there are the data with consecutive identical value.When existence in the first data flow has the data of consecutive identical value, enter step S13; When there are not the data with consecutive identical value in the first data flow, enter step S17.
S13, record the value Y that often organizes data and individual numerical value of N respectively.
S14, judge whether each numerical value is more than or equal to number preset value respectively.When individual numerical value is more than or equal to number preset value, enter step S15; When all numerical value are all less than number preset value, enter step S17.Preferably, number preset value is more than 3 or 3.
S15, generate and comprise several ASC II characters, the value of data that individual numerical value is corresponding and the serial data of individual numerical value in turn.Preferably, several ASC II characters comprise character "! ", one or more in character " % " and character " $ ".Such as, serial data can be "! + Y+N " or "! + %+Y+N ".Plus sige "+" is without any implication herein, is only for representing annexation, such as "! + Y+N " expression "! " connect " Y " below, " Y " connects " N " below.Hereinafter the implication of plus sige "+" is identical therewith, no longer describes in detail.
S16, generate the second data flow after compression, the second data stream packets containing several serial datas, the first data flow intermediate value discontinuous phase with data and the first data flow intermediate value consecutive identical and individual numerical value is less than the data of number preset value.
S17, generate the 3rd data flow, the 3rd data stream packets containing all data in the first data flow, and in the 3rd data flow data to put in order with it in the first data flow former put in order identical.
Above-mentioned compression method, by step S11-S17, by judging whether there are the data with consecutive identical value in the first data flow, when existence has the data of consecutive identical value, the coded system of the value+individual numerical value of the ASC II character+data data identical to this partial continuous are adopted to compress, thus reduce the data volume of the data flow needing transmission, particularly can when there is a large amount of repeating data in medical high pressure generator serial communication, the reduction volume of data volume can be particularly outstanding.Due to the reduction greatly of data volume that will transmit, so substantially reduce communication time, drastically increase the efficiency of transmission of ASC II formatted data stream in medical high pressure generator serial communication, and then the quick response between medical high pressure generator and PC control desk can be realized.
Preferably, the method for the second data flow after generating compression in above-mentioned steps S16 comprises:
First data flow intermediate value discontinuous phase with data and the first data flow intermediate value consecutive identical and data the putting in order in the second data flow that individual numerical value is less than number preset value to arrange according to its former putting in order in the first data flow; The corresponding position that each serial data is arranged at the second data flow, consecutive identical with corresponding one group of the serial data arrangement position of data in the first data flow is identical.Such as, if containing " data 1+ data 2+ ...+data 2+ data 3 " in the first data flow, wherein the number of data 2 is N, then containing " data 1+! in the second data flow after compression + data 2+N+ data 3 ".Because the data compressed in rear data flow do not change its original arrangement position, so simplify the step of subsequent decompression, improve decompression speed, accelerate the speed of response of serial communication between medical high pressure generator and PC control desk further.
Embodiment 2
The present embodiment provides a kind of decompression method for ASC II formatted data stream in medical high pressure generator serial communication, and corresponding with the compression method of embodiment 1, as shown in Figure 2, the method comprises the steps:
First data flow of S21, reception ASC II form.
S22, judge whether there is ASC II character string in the first data flow, ASC II character string comprises several ASC II characters.When there is ASC II character string in the first data flow, enter step S23; When there is not ASC II character string in the first data flow, enter step S26.Preferably, several ASC II characters comprise character "! ", one or more in character " % " and character " $ ".
S23, respectively record often organize ASC II character string after the first data of being close to and the second data." before " be toward the first Data stream header direction, " afterwards " is toward the first data flow caudal directions.
S24, respectively for often organize ASC II text string generation comprise the second data amount check, value is the serial data of the first data.
The second data flow after the compression of S25, generating solution, the second data stream packets is containing other data in several serial datas and the first data flow except ASC II character string, the first data and the second data.
S26, generate the 3rd data flow, the 3rd data stream packets containing all data in the first data flow, and in the 3rd data flow data to put in order with it in the first data flow former put in order identical.
Above-mentioned decompression method, by step S21-S26, by judging whether there is ASC II character string in the first data flow, when there is ASC II character string, by obtaining the first data and the second data, generate comprise the second data amount check, value is the serial data of the first data, achieve the decompression to the first data flow, thus indiscriminately can complete decompression process, improve the accuracy rate of serial communication between medical high pressure generator and PC control desk, and then achieve quick response.
Preferably, the method for the second data flow after the generating solution compression in above-mentioned steps S25 comprises:
Other data in first data flow except ASC II character string, the first data and the second data putting in order in the second data flow arranges according to its former putting in order in the first data flow; One group of that each serial data is arranged at the second data flow, corresponding with serial data ASC II character string, the corresponding position that the first data are identical with the arrangement position of the second data in the first data flow.Such as, if in the first data flow containing " data 1+! + data 2+N+ data 3 ", then containing " data 1+ data 2+ in the second data flow after decompressing ... + data 2+ data 3 ", wherein the number of data 2 is N.Because the data in data flow after decompressing remain with its original arrangement position, so ensure that decompress rear data flow and the consistency compressing front data flow, improve accuracy, and then accelerate the speed of response of serial communication between medical high pressure generator and PC control desk further.
Embodiment 3
Corresponding to embodiment 1, the present embodiment provides a kind of compression set for ASC II formatted data stream in medical high pressure generator serial communication, and as shown in Figure 3, this device comprises:
Receiving element 31, for receiving the first data flow of ASC II form.
Whether the first judging unit 32, exist the data with consecutive identical value for judging in the first data flow.
Record cell 33, for when existence in the first data flow has the data of consecutive identical value, records the value and a numerical value of often organizing data respectively.
Second judging unit 34, for judging whether each numerical value is more than or equal to number preset value respectively.
First generation unit 35, for when numerical value is more than or equal to number preset value, generates and comprises several ASC II characters, the value of data that individual numerical value is corresponding and the serial data of individual numerical value in turn.Preferably, several ASC II characters comprise character "! ", one or more in character " % " and character " $ ".
Second generation unit 36, for generating the second data flow after compression, the second data stream packets containing several serial datas, the first data flow intermediate value discontinuous phase with data and the first data flow intermediate value consecutive identical and individual numerical value is less than the data of number preset value.
3rd generation unit 37, for when there are not the data with consecutive identical value in the first data flow or all numerical value are all less than number preset value, generate the 3rd data flow, 3rd data stream packets containing all data in the first data flow, and in the 3rd data flow data to put in order with it in the first data flow former put in order identical.
Above-mentioned compression set, by judging whether there are the data with consecutive identical value in the first data flow, when existence has the data of consecutive identical value, the coded system of the value+individual numerical value of the ASC II character+data data identical to this partial continuous are adopted to compress, thus reduce the data volume of the data flow needing transmission, particularly can when there is a large amount of repeating data in medical high pressure generator serial communication, the reduction volume of data volume can be particularly outstanding.Due to the reduction greatly of data volume that will transmit, so substantially reduce communication time, drastically increase the efficiency of transmission of ASC II formatted data stream in medical high pressure generator serial communication, and then the quick response between medical high pressure generator and PC control desk can be realized.
Embodiment 4
Corresponding to embodiment 2, the present embodiment provides a kind of decompressing device for ASC II formatted data stream in medical high pressure generator serial communication, comprising:
Receiving element, for receiving the first data flow of ASC II form.
Whether judging unit, exist ASC II character string for judging in the first data flow, ASC II character string comprises several ASC II characters.Preferably, several ASC II characters comprise character "! ", one or more in character " % " and character " $ ".
Record cell, for when there is ASC II character string in the first data flow, records the first data and the second data that are close to after often organizing ASC II character string respectively.
First generation unit, for respectively for often organize ASC II text string generation comprise the second data amount check, value is the serial data of the first data.
Second generation unit, for the second data flow after generating solution compression, the second data stream packets is containing other data in several serial datas and the first data flow except ASC II character string, the first data and the second data.
3rd generation unit, for when there is not ASC II character in the first data flow, generate the 3rd data flow, the 3rd data stream packets containing all data in the first data flow, and in the 3rd data flow data to put in order with it in the first data flow former put in order identical.
Above-mentioned decompressing device, by judging whether there is ASC II character string in the first data flow, when there is ASC II character string, by obtaining the first data and the second data, generate comprise the second data amount check, value is the serial data of the first data, achieve the decompression to the first data flow, thus indiscriminately can complete decompression process, improve the accuracy rate of serial communication between medical high pressure generator and PC control desk, and then achieve quick response.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (10)
1., for a compression method for ASC II formatted data stream in medical high pressure generator serial communication, it is characterized in that, comprise the steps:
Receive the first data flow of ASC II form;
Judge whether there are the data with consecutive identical value in described first data flow;
When existence in described first data flow has the data of consecutive identical value, record the value and a numerical value of often organizing described data respectively;
Judge whether each described numerical value is more than or equal to number preset value respectively;
When described numerical value is more than or equal to number preset value, generates and comprise the value of data corresponding to several ASC II characters, described numerical value and the serial data of described numerical value in turn;
Generate the second data flow after compression, described second data stream packets containing serial data described in several, described first data flow intermediate value discontinuous phase with data and described first data flow intermediate value consecutive identical and individual numerical value is less than the data of number preset value.
2. compression method according to claim 1, is characterized in that, several ASC II characters described comprise character "! ", one or more in character " % " and character " $ ".
3. compression method according to claim 1 and 2, is characterized in that, the described method generating the second data flow after compressing comprises:
Described first data flow intermediate value discontinuous phase with data and described first data flow intermediate value consecutive identical and data the putting in order in described second data flow that individual numerical value is less than number preset value to arrange according to its former putting in order in described first data flow;
The corresponding position that each described serial data is arranged at described second data flow, consecutive identical with corresponding one group of the described serial data arrangement position of data in described first data flow is identical.
4. the compression method according to any one of claim 1-3, is characterized in that, also comprises the steps:
When there are not the data with consecutive identical value in described first data flow or all described numerical value is all less than number preset value, generate the 3rd data flow, described 3rd data stream packets containing all data in described first data flow, and in described 3rd data flow data to put in order with it in described first data flow former put in order identical.
5., for a decompression method for ASC II formatted data stream in medical high pressure generator serial communication, it is characterized in that, comprise the steps:
Receive the first data flow of ASC II form;
Judge whether there is ASC II character string in described first data flow, described ASC II character string comprises several ASC II characters;
When there is ASC II character string in described first data flow, record the first data and the second data that are close to after often organizing described ASC II character string respectively;
Respectively for often organize described ASC II text string generation comprise described second data amount check, value is the serial data of described first data;
The second data flow after generating solution compression, described second data stream packets is containing other data in serial data described in several and described first data flow except described ASC II character string, the first data and the second data.
6. decompression method according to claim 5, is characterized in that, several ASC II characters described comprise character "! ", one or more in character " % " and character " $ ".
7. the decompression method according to claim 5 or 6, is characterized in that, the method for the second data flow after described generating solution compression comprises:
Other data in described first data flow except described ASC II character string, the first data and the second data putting in order in described second data flow arranges according to its former putting in order in described first data flow;
The corresponding position that each described serial data is arranged at described second data flow, corresponding with the described serial data arrangement position of one group of ASC II character string, the first data and second data in described first data flow is identical.
8. the decompression method according to any one of claim 5-7, is characterized in that, also comprises the steps:
When there is not ASC II character string in described first data flow, generate the 3rd data flow, described 3rd data stream packets containing all data in described first data flow, and in described 3rd data flow data to put in order with it in described first data flow former put in order identical.
9., for a compression set for ASC II formatted data stream in medical high pressure generator serial communication, it is characterized in that, comprising:
Receiving element, for receiving the first data flow of ASC II form;
First judging unit, for judging whether there are the data with consecutive identical value in described first data flow;
Record cell, for when existence in described first data flow has the data of consecutive identical value, records the value and a numerical value of often organizing described data respectively;
Second judging unit, for judging whether each described numerical value is more than or equal to number preset value respectively;
First generation unit, for when described numerical value is more than or equal to number preset value, generates and comprises the value of data corresponding to several ASC II characters, described numerical value and the serial data of described numerical value in turn;
Second generation unit, for generating the second data flow after compression, described second data stream packets containing serial data described in several, described first data flow intermediate value discontinuous phase with data and described first data flow intermediate value consecutive identical and individual numerical value is less than the data of number preset value.
10., for a decompressing device for ASC II formatted data stream in medical high pressure generator serial communication, it is characterized in that, comprising:
Receiving element, for receiving the first data flow of ASC II form;
Judging unit, for judging whether there is ASC II character string in described first data flow, described ASC II character string comprises several ASC II characters;
Record cell, for when there is ASC II character string in described first data flow, records the first data and the second data that are close to after often organizing described ASC II character string respectively;
First generation unit, for respectively for often organize described ASC II text string generation comprise described second data amount check, value is the serial data of described first data;
Second generation unit, for the second data flow after generating solution compression, described second data stream packets is containing other data in serial data described in several and described first data flow except described ASC II character string, the first data and the second data.
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