RU96112111A - SYSTEM AND METHOD OF FAXIMILY DATA TRANSFER - Google Patents

Claims (18)

1. A method of minimizing the “bottleneck” of data of the Low Data Rate Network (SPSDP), wherein said SPSPS has a data transmission speed SNPSD (RLDRN) and a data storage buffer device, said method comprising: transmitting a data stream from a facsimile (FAX) ) to said SNSPD apparatus, wherein said apparatus has a FAX-speed data transmission FAX (R _fax), wherein said data stream is divided into a plurality of blocks and each of said plurality of blocks are divided into a plurality of data groups, each e has a plurality of data groups the data group length (L _framl), and wherein the amount of said data stream (L _{Bott leneck)} stored in said buffer memory data transfer device; and a request to said FAX apparatus to retransmit at least one said plurality of data groups, the number of said plurality of retransmitted data groups (N _{RETX- frames} ) being calculated as follows:
N _{RETX- frames} = INT [(T _overhead + (L _{Bott leneck} / R _fax )) / (L _frame / RLDRN)],
wherein _{T overhead = T reqnest + TFAX setup} + T confir mation, wherein T _reqnest is the time required for said requesting retransmission; TFAX _setup is the time required for the specified FAX machine to establish for the specified retransmission; T _{confi rmation} is the time required to send an acknowledgment signal for said retransmission to the FAX apparatus. 2. The method according to claim 1, also comprising: calculating, for each set of blocks, the value of the data group (N _{Bott leneck} ) corresponding to the number of the set of data groups that must be retransmitted by the first FAX apparatus so that the L _{Bottle neck} can become equal zero, with N _{Bottl eneck} calculated as follows:
N _{Bottl eneck} = INT [(L _{Bottl eneck} / R _fax ) / (L _frame / RLDRN)],
a comparison for each set of N _{Bottl eneck blocks} with a fixed integer value (N _min ); if N _{Bottl eneck is} greater than N _min - execution of the request phase; and if N _{Bott leneck is} less than or equal to N _min - sending a confirmation signal to the FAX device and bypassing the request phase. 3. A method of minimizing the data bottleneck in the Low Data Rate Network (SPSPD), wherein said SPSPD has a transmission buffer memory
data, and said method comprises: transmitting a data stream from a facsimile (FAX) apparatus to said SINCP, wherein said data stream is divided into many blocks, said many blocks being divided into many data groups, and the amount of said data stream (L _{Bottl eneck} ) is stored in the specified buffer storage device for transmitting data; and a request to said FAX apparatus to retransmit at least one said plurality of data groups, the number of said plurality of retransmitted data groups being a function of L _{Bottl eneck} . 4. The method according to claim 3, in which each data group has a data group length (L _frame ), the SNPSD has a data transmission SNPSD (RLDRN), and the FAX device has a FAX data transmission speed (R _fax ), wherein the number of sets is repeated transmitted data groups (N _{RETX- frames} ) are defined as follows:
N _{RETX- frames} = INT [(T _overhead + (L _{Bottl eneck} / R _fax )) / (L _frame / RLDRN)],
where T _overhead = T _reqnest + T _FAXsetup + T _{confi rmation} , where T _reqnest is the time required to request said retransmission; TFAX _setup is the time it takes for the FAX device to establish itself for the specified retransmission, and T _{confi rmation} is the time it takes for it to send a confirmation signal for the specified retransmission to the FAX device. 5. A method of minimizing the data bottleneck in the Low Speed Network (SPSPD), wherein said SPSPD has a data transfer rate (RLDRN) and a buffer storage device, said method comprising: transmitting a data stream from a first facsimile (FAX) apparatus to the indicated SNPSD, wherein said first FAX apparatus has a FAX data rate (R _fax ), said data stream being divided into a plurality of blocks, each said plurality of blocks being divided into a plurality of data groups, each e said plurality of data groups has a data group length (L _frame ); storing the amount of the indicated data stream (L _{Bottl eneck} ) corresponding to the indicated data bottleneck in the indicated data storage buffer storage device, which takes place at the time when the specified data stream is transmitted via the SINCP to the second FAX device; and a request to said first FAX apparatus to retransmit at least one said plurality of data groups, the number of said plurality of retransmitted data groups (N _{RETX- frames} ) being calculated as follows:
N _{RETX- frames} = INT [(T _overhead + (L _{Bottl eneck} / R _fax )) / (L _frame / RLDRN)],
where T _overhead = T _reqnest + T _FAXsetup + T _{confi rmation} , where T _reqnest is the time required to request said retransmission; T _FAXsetup is the time required for the FAX unit to establish itself for the specified retransmission; T _{confi rmation} is the time required to send an acknowledgment signal for said retransmission to said first FAX apparatus.  6. The method according to claim 5, in which the SNPSD is a digital wireless communication network including a first and second modem, said first modem communicating with a first FAX device, and said second modem communicating with a second FAX device. 7. A method of minimizing the data bottleneck in the Low Data Rate Network (SPSDS), wherein said SPSPS has a first side and a second side, said SPSPS having a one-dimensional image data format and a two-dimensional image data format, the method comprising: installation of the first facsimile (FAX) apparatus in the specified one-dimensional image data format; sending from the specified first FAX-apparatus to the specified first side of the specified SNPSD data stream,
encoded in the specified one-dimensional format image data; expansion after compression of the specified sent data stream; re-encoding the specified extended after compression data stream in the specified two-dimensional format of image data; transmitting said re-encoded data stream from said first side to said second side of said SINAP; a second extension after compressing said transmitted data stream; second re-encoding of said second expanded after compression data stream into said one-dimensional image data format; and the second sending the specified second re-encoded data stream from the specified second side of the indicated SNPSD to the second FAX apparatus. 8. A method of minimizing the data bottleneck in the Low Data Rate Network (SPSPD), wherein said SPSPD has a first side and a second side, and the data bottleneck includes a certain amount of data in the data bottleneck, said method comprising: sending from a first FAX apparatus to said first side of said SNPSD a data stream encoded in an image data format;
expansion after compression of the specified sent data stream, as a result of which the specified sent data stream is converted into a bitwise-displayed image having image data; processing said pixel-by-pixel displayed image, wherein said image data is reduced by the amount of data corresponding to the difference between the facsimile data rate and the data rate of the data transfer rate; image compression of the specified processed bitmap image; transmitting said image-compressed image-by-element image from said first side to said second side of said SINCP; the second expansion after compression of the specified transmitted element-wise displayed image; reverse processing of the specified second extended element-by-pixel displayed image, in which the specified processing step is directed to a substantial recreation of the specified data stream; re-encoding the specified substantially recreated data stream into the specified image data format; and a second sending said re-encoded data stream from said second side of said SINCP to the second FAX apparatus.  9. A method of minimizing the data bottleneck in the Low Data Rate Network (SPSPD), comprising: transmitting a data stream from a facsimile (FAX) machine to the indicated SPSPD, wherein said data stream includes a plurality of data lines; and processing in said SNPSD of said transmitted data stream, which includes discarding each Nth row of said plurality of data rows. 10. A method for eliminating a data bottleneck in the Low Data Rate Network (SPSPD), wherein said SPSPD has a first side and a second side, said method comprising: transmitting a data stream from a facsimile (FAX) device to the indicated first side of said SPSPD, wherein said data stream includes a plurality of data lines to be transmitted over said SINAP; processing on the specified first side of the indicated SNPSD of the specified transmitted data stream, which includes discarding one specified set of data rows following the adjacent number of the specified set of data rows (N _{conti guons} ), and N _{cont iguons} is determined as follows:
N _{conti guons} = N _min-sent + INT [(N _{drop -window} • R _uniform (0,10))],
where N _min-sent corresponds to the minimum number of adjacent non-discarded data rows, N _{drop -window} corresponds to the window of discarded data rows, and R _uniform (0,1) corresponds to a function for outputting uniformly distributed
real values between 0 and 1; and repeating said processing step until the processing of said transmitted data stream is completed. 11. The method of claim 10, further comprising providing a first look-up table containing a plurality of first values for N _min-sent and a second _look-up table containing a plurality of second values for N _{drop- wind} , each said plurality of first values and second values being a function one set of FAX data rates, one set of FAX image coding formats and one set of SNPSD data rates.  12. The method of claim 10, further comprising generating a plurality of indication signals, each plurality of indication signals corresponding to one discarded data line; and placing in the specified waste data stream the specified set of indication signals, as a result of which the specified set of indication signals replaces the corresponding discarded data rows.  13. The method according to p. 12, also containing the second transmission of the placed data stream from the first side to the second side of the SNCPA, and replacing each set of placed and second transmitted indication signals with a new data line. 14. A method of minimizing the data bottleneck in the Low Data Rate Network (SPSPD), wherein said SPSPD has a first side and a second side and has a line length threshold (L _min ), said method comprising:
transmitting the data stream from the facsimile (FAX) apparatus to the indicated first side of the indicated SNPSD, wherein said data stream has a plurality of data lines, each said plurality of data lines having a line length; and processing, on the specified first side of the indicated SNPSD, the specified transmitted data stream, including discarding each specified set of data rows having a specified line length exceeding L _min . 15. The method according to p. 14, in which L _min has one set of fixed values. 16. The method according to p. 14, in which the "bottleneck" of the data contains a certain amount of data, and characterized in that L _min varies depending on the specified amount of data. 17. A method of minimizing the data bottleneck in the Low Data Rate Network (SPSPD), wherein said SPSPD has a first side and a second side, said SPSPD connected to a first facsimile (FAX) device and a second FAX device, moreover, the first and second FAX devices can coordinate the value corresponding to the Minimum Line Scan Time (MVSS), and this method contains: scanning and encoding the data stream into multiple data lines using the first specified FAX app arata; processing the specified scanned and encoded data stream, including the placement of at least one bit
filling in each specified set of data lines having a bit value (L _line ) less than the indicated MVSS value, as a result of which the specified bit value for each specified set of data lines of the specified processed data is equal to or greater than the specified MACS value; transferring said processed data from a first said FAX apparatus to said first side of said SNPSD with the facsimile data rate R _fax ; a second processing of said transmitted data, including deletion of each at least one data row of said at least one fill bit; a second transmission of said processed data a second time from said first to said second side of said NSDP; a third processing of said second-time transmitted data, including re-placing at least one fill bit on each data line; and a third transmission of the processed data indicated for the third time from the indicated second side of the indicated SNPSD to the specified FAX apparatus. 18. The method according to p. 17, also containing a determination of the implementation of the third processing step, and the determining step includes the following subsets: calculating, for every second time of the transmitted data row, the transmission time (T _line ) according to the following equation:
T _line = L _line / R _fax ,
where R _fax is the specified facsimile data rate;
comparison, for each row of secondarily transmitted data rows, T _line with MVSS; and if the T _{line is} less than the MVSS, performing the third processing step.