CN100483451C - On-demand printing of coding patterns - Google Patents
On-demand printing of coding patterns Download PDFInfo
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- CN100483451C CN100483451C CNB2004800165511A CN200480016551A CN100483451C CN 100483451 C CN100483451 C CN 100483451C CN B2004800165511 A CNB2004800165511 A CN B2004800165511A CN 200480016551 A CN200480016551 A CN 200480016551A CN 100483451 C CN100483451 C CN 100483451C
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Abstract
A computer-implemented method is designed for on-demand printing on digital printers of a coding pattern to code data on a surface. The coding pattern comprises a plurality of parallel number sequences which represent different rotations of a cyclic number sequence. The method could involve retrieving a digital representation of the coding pattern, and identifying the rotations therein to derive shift information which designates a phase difference between each rotation and the cyclic number sequence. In the printing operation, all the different rotations may be represented by the cyclic number sequence embodied as at least one code block image. This code block image is repeated in accordance with the shift information to form a printable image in the printer.
Description
The cross reference of related application
The application requires to enjoy priority according to the U.S. Provisional Patent Application 60/477,926 of the Swedish patent application 0301729-0 of submission on June 13rd, 2003 and submission on June 13rd, 2003, and wherein said patented claim all is hereby incorporated by.
Technical field
The present invention relates generally to printing coding pattern on the digital printer as required.
Background technology
At present, using coding pattern is known going up certain information of embedding such as passive base such as paper, clipboard (base).Then, scanner, facsimile recorder, camera or the digital pen of appropriate programming can read, rebuild and use those logically to embed the information of substrate.For example, suprabasil graphical information can be replenished with the embedded information of function at the bottom of the expansion base.This embedded information can comprise the file data, order, supplemental text or the image that are used for complete or partial reconstruction graphical information, hyperlink, absolute position or the like.
In general, coding pattern is arranged in suprabasil machine-readable code symbols regularly around certain and constructs.Wherein a kind of coding pattern of particular category is based on one or more circulations (cyclic) Serial No., and this sequence is also referred to as pseudo-random sequence.Just as known, this circulation Serial No. is the ordered set of length for unique sequence of n bit, and this sequence is to be produced by described n rank shift register when giving n rank displacement (shift) register loading appointment seed and specifying register position to operate on it by feedback tap (tap).Therefore, this circulation Serial No. has following attribute, that is, the position of each sequence in Serial No. with predetermined length (n) is clearly to determine.According to different principles, take turns commentaries on classics (rotation) or ring shift is printed this circulation Serial No. with the form of graphical symbol sequence on substrate surface by various, can in substrate, encode to data.
And at WO 92/17859; WO 00/73983; WO 01/26032; WO 01/71643; WO 02/084473; WO 03/001440; US 6,000,621 and US 6,208,771 in then different coding principles is described.
Under many circumstances, can produce substrate on a large scale, accurately in the figure industry with coding pattern.Yet, sometimes also can need to create substrate on a small scale, and for example, this processing can be finished by using the personal computer that links to each other with for example ink-jet or laser printer with coding pattern.
Above-mentioned processing can realize that wherein Bi Yao coding pattern is created with graphical format as image file with a kind of like this mode, and for example, described graphical format can be a bitmap format.This image file will be transformed into page-describing code such as PostScript (trade mark) by computing machine, and wherein said page-describing code has nothing to do with printer usually, and after this, this document will be sent to printer unit.According to page-describing code, printer unit is created corresponding instruction and is come printer hardware is controlled.For laser printer, this hardware can comprise the laser diode with relevant optical device.And in ink-jet printer, this hardware can comprise the ink sprayer device.Then, printing will be carried out in the substrate of for example paper.
If coding pattern has very high information density, and described information density realizes that by dense arrangement coded identification in substrate image file and page-describing code might become very big so.So, delivery time and the printer processes time that is used for described sign indicating number might become long.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of printing technique that overcomes the problems referred to above.
These and other purposes can be known understanding from following description, and these and other targets fully or partly realize by means of method and apparatus according to the invention now.The preferred embodiments of the present invention have also been defined.
In a first aspect of the present invention, providing a kind of is used to print coding pattern so that from the teeth outwards with the first dimension method of coding data, wherein said coding pattern comprises a plurality of first Parallel Digital sequences, the described first Parallel Digital sequence represents that the difference wheel of the first circulation Serial No. changes, wherein, the position that each local sequence of predetermined length is listed in the first circulation Serial No. is to determine that clearly described method comprises: the numeral of retrieve encoded pattern; Sign is described in described numeral takes turns commentaries on classics, is used to indicate each to take turns the first displacement information of the phase differential between commentaries on classics and the described first circulation Serial No. so that derive; Produce first data structure, in described first data structure, described each of taking turns in the commentaries on classics represents with the described first displacement information and first definition of data that all wherein said first definition of data is represented the described first circulation Serial No.; First data structure is sent to printer; Impel printer to convert first data structure to printable image.
In a second aspect of the present invention, providing a kind of is used to print coding pattern so that from the teeth outwards with the equipment of the first dimension coded data, wherein said coding pattern comprises a plurality of first Parallel Digital sequences, the described first Parallel Digital sequence represents that the difference wheel of the first circulation Serial No. changes, wherein, the position that each local sequence of predetermined length is listed in the first circulation Serial No. is to determine that clearly described equipment comprises: the device that is used for the numeral of retrieve encoded pattern; Be used for changeing so that derivation is used to indicate each to take turns the device of the first displacement information of the phase differential between commentaries on classics and the described first circulation Serial No. described wheel of described numeral sign; Be used to produce the device of first data structure, in described first data structure, described each of taking turns in the commentaries on classics represents with the described first displacement information and first definition of data that all wherein said first definition of data is represented the described first circulation Serial No.; Be used for first data structure is sent to the device of printer; Be used to impel described printer first data structure to be converted to the device of printable image.
In a third aspect of the present invention, providing a kind of is used to print coding pattern in printer so that method of coding data from the teeth outwards, described coding pattern comprises a plurality of Parallel Digital sequences, described Parallel Digital sequence represents that the difference wheel of period word sequence changes, wherein, the position that each local sequence of predetermined length is listed in the circulation Serial No. is to determine that clearly described method comprises: retrieval is used to represent the definition of data of described circulation Serial No.; Derivation is used to indicate each to take turns the displacement information of the phase differential between commentaries on classics and the described circulation Serial No.; And the printable image that produces described coding pattern according to described displacement information and described definition of data.
In a fourth aspect of the present invention, providing a kind of is used to print coding pattern in printer so that the equipment of coded data from the teeth outwards, described coding pattern comprises a plurality of Parallel Digital sequences, described Parallel Digital sequence represents that the difference wheel of period word sequence changes, wherein, the position that each local sequence of predetermined length is listed in the circulation Serial No. is to determine that clearly described equipment comprises: the device that is used to retrieve the definition of data of representing described circulation Serial No.; Each takes turns the device of the displacement information of the phase differential between commentaries on classics and the described circulation Serial No. to be used to derive indication; And the device that is used for producing the printable image of described coding pattern according to described displacement information and described definition of data.
In a fifth aspect of the present invention, providing a kind of is used to print coding pattern in printer so that from the teeth outwards with first dimension and the second dimension method of coding data, wherein first dimension of coding pattern comprises a plurality of first Parallel Digital sequences, and second dimension of coding pattern comprises a plurality of second Parallel Digital sequences, wherein each combination of a digital value in first Serial No. and a digital value in second Serial No. all is to represent with the unique coded identification in the described coding pattern, wherein, the described first Parallel Digital sequence represents that the difference wheel of the first circulation Serial No. changes, and the position that each local sequence of predetermined length is listed in the first circulation Serial No. is clearly to determine, and wherein, the second Parallel Digital sequence represents that the difference wheel of the second circulation Serial No. changes, and each local sequence of predetermined length to be listed in position in the second circulation Serial No. be to determine that clearly described method comprises: at least one the code block image that is used to represent the coded identification of described Serial No. for each Serial No. retrieval in each dimension; Based in each dimension, be used to indicate each take turns change with the respective cycle Serial No. between the displacement information of phase differential arrange and merge the code block image that retrieves thus so that formation respectively with described first dimension and corresponding first and second composographs of described second dimension; And make up described first and second composographs, so that form printable image.
In a sixth aspect of the present invention, providing a kind of is used to print coding pattern in printer so that from the teeth outwards with the equipment of first dimension and the second dimension coded data, wherein first dimension of coding pattern comprises a plurality of first Parallel Digital sequences, and second dimension of coding pattern comprises a plurality of second Parallel Digital sequences, wherein each combination of a digital value in first Serial No. and a digital value in second Serial No. all is to represent with the unique coded identification in the described coding pattern, wherein, the described first Parallel Digital sequence represents that the difference wheel of the first circulation Serial No. changes, and the position that each local sequence of predetermined length is listed in the first circulation Serial No. is clearly to determine, and wherein, the second Parallel Digital sequence represents that the difference wheel of the second circulation Serial No. changes, and each local sequence of predetermined length to be listed in position in the second circulation Serial No. be to determine that clearly described equipment comprises: be used to each Serial No. retrieval in each dimension to be used to represent the device of at least one code block image of the coded identification of described Serial No.; Be used for based on be used in each dimension to indicate each take turns change with the respective cycle Serial No. between the displacement information of phase differential arrange with merge described code block image in case formation respectively with the device of described first dimension and corresponding first and second composographs of described second dimension; And be used to make up described first and second composographs so that form the device of printable image.
Description of drawings
Come in the mode of example referring now to accompanying drawing that present invention is described, wherein said accompanying drawing schematically describes currently preferred embodiments.
Fig. 1 is the figure of the first prior art coding pattern;
Fig. 2 A is the synoptic diagram of realizing according to the system of Method of printing of the present invention;
Fig. 2 B is the synoptic diagram with substrate of Information Level and coding layer;
Fig. 3 is the synoptic diagram of basic coding principle that is used for the pattern of Fig. 1;
Fig. 4 A is the figure of symbol definition that is used for the pattern of Fig. 1;
Fig. 4 B is the figure of overlapping (superimposed) assemble of symbol that is used for the coding pattern of Fig. 1;
Fig. 4 C is the synoptic diagram of the Different Logic combination of the overlapping symbol among Fig. 4 B;
Fig. 4 D is the synoptic diagram of code block image that is used for the coding pattern of Fig. 1;
Fig. 4 E is form from the code block image of Fig. 4 D two synoptic diagram of the composographs of calibration mutually;
Fig. 5 is the process flow diagram that produces the method for page-describing code according to the present invention;
Fig. 6 is the process flow diagram that comes the method for printer operation according to the present invention;
Fig. 7 is the synoptic diagram of the electronic circuit part in the printer shown in Fig. 2 A;
Fig. 8 A and 8B represent the coded identification of the second prior art coding pattern and the figure of superimposed coding assemble of symbol respectively;
Fig. 9 A and 9B represent the coded identification of the 3rd prior art coding pattern and the figure of superimposed coding assemble of symbol respectively;
Figure 10 is the figure of the coded identification set of the 4th prior art coding pattern.
Embodiment
Fig. 1 has described a part that is used for illustration absolute position encoder pattern of the present invention.Describe this position encoded pattern in detail in open WO 01/26032 of applicant's international monopoly and WO 03/001440, wherein said patent disclosure is hereby incorporated by.The coding pattern of Fig. 1 mainly is made up of the simple graph symbol, and described symbol can adopt four different values, can encode to the information of dibit thus.Each symbol all comprises a mark 10 and spatial reference point or nominal position 12, and wherein (offset) certain distance be removed or be offset to mark 10 can from nominal position 12 along a direction in four different directions.The value of each symbol is provided by sense of displacement.Symbol is then arranged with nominal position 12, grating of formation rule (raster) or grid 14 thus, and wherein said grating or grid can be virtual and can not be included in the coding pattern significantly thus.
Hereinafter, suppose to use the coding pattern of Fig. 1 to come to be encoded in the absolute position in two dimensions.
The coding pattern of Fig. 1 can be reproduced in the substrate with high information density.Normally 0.3 millimeter of mesh spacing (shown in 16 among Fig. 1), and height be 25 centimetres and wide be that described spacing will be transformed into the symbol more than 400,000 on 15 centimetres the page.Clearly, it will be very difficult wanting to print this highdensity coding pattern with proper speed on conventional digital printer.
In Fig. 2 A, shown the system that is used to print this high density coding pattern.This system comprises computing machine 20 and printer 21.Printer 21 can adopt communication mode to link to each other with computing machine 20, page description file 22 can be sent to printer 21 from computing machine 20 thus.
Before the inventive principle to the control printer is described, advantageously briefly introduce the coding principle of the coding pattern among Fig. 1.For brevity, at first can describe this principle in first dimension, be x direction (with reference to Fig. 3) in first dimension described in this example.Use the main Serial No. of circulation to carry out the coding of this direction, the main Serial No. of wherein said circulation has following characteristic, that is, the position that each local sequence with predetermined length is listed in the circulation chief series all is clearly to determine.In this example, described predetermined length is 6.Therefore, if six continuous numbers are taken out in any position from the main Serial No. that circulates, in this main Serial No., these six numerals only can occur once in proper order with this so.If the beginning of the ending of main Serial No. and main Serial No. links to each other, this attribute is suitable for equally so.Thus, here main Serial No. being called is round-robin.What use in this example in addition, is scale-of-two master Serial No..If have the position of the local sequence of six numerals is to determine that clearly it is 2 that so main Serial No. will have size thus
6=64 maximum length, and in main Serial No., length are that 6 local sequence can have position 0～63.Yet for the reason of error correction, might select length is 63 main Serial No..Will therefore suppose that the length of main Serial No. is 63 hereinafter, and therefore, it is limited to the unique position within the scope 0～62.
Coding pattern is based on the different rotary of using the main Serial No. of circulation or ring shift.In order to be encoded in the position in the x direction, in whole lip-deep row, will print or arrange main Serial No. in some other mode, and it is taken turns change or ring shift in a different manner, wherein said row are on the y direction, and y direction and position are with the direction that is encoded quadrature mutually.List same, main Serial No. can be repeated to print, if on the y direction with the position that is encoded than more corresponding to the position on the direction of main Serial No. length, so this duplicate printing will be essential.Then, main Serial No. identical taken turns commentaries on classics and will be used to all duplicate printings.But, in different row, also can use different wheels to change.
Fig. 3 schematically illustrates the paper with 7 row x～x+6.What here only clearly describe is first digit during the difference wheel of main Serial No. changes.Whole main Serial No. carries out schematic mark with square frame B.In addition, in Fig. 3, the first local sequence S with six numerals is in addition mark of the square frame drawn of with dashed lines in each row.As mentioned above, in main Serial No., each local sequence S has a position of clearly determining.
Each has all defined a difference d to adjacent row.Difference d be by in each row between first position of local sequence in main Serial No. difference provide.In addition, if choose difference between the position of the local sequence of next step-length in the described row, so owing to be to come the described position of dislocation in a like fashion, so net result will be identical.Therefore, no matter what kind of " highly " to come the position of the local sequence in the more main Serial No. with in row, difference d is identical.Therefore, to row, difference d is constant on the y direction for each.
In row x+5, the first local sequence of main Serial No. is 0,0,0,0,0,0, this sequence correspondence be position 0 in the main Serial No..And in row x+6, the first local sequence of main Serial No. is 1,0,0,0,1,1, and this sequence correspondence is position 57 in the main Serial No..Therefore, difference or ring shift between these row are 57, so d (x+5)=57.Should be noted that described difference is that mould is determined with main Serial No. length.
The difference that can encode by this way all is among scope 0～K-1, and wherein K is the length of main Serial No., and in this example, K=63 can encode to the difference in the scope 0～62 by it thus.Change by the difference wheel of selecting main Serial No., can create a difference sequence, be referred to as basic Serial No. or basic difference sequence hereinafter, this sequence has such characteristic, that is, each local sequence with predetermined length is listed in and all has the position of clearly determining in the basic Serial No..And in this example, described predetermined length is 5.All have a position of clearly determining in the basic difference sequence owing to each local sequence that comprises 5 differences is listed in, therefore on the x direction, can use this sequence to come to be encoded in the position.Thus, in Fig. 3, local sequence S (x)～S (x+5) will be to five difference d (x)～d (x+4) encodes, and described difference has provided the local sequence of basic Serial No..
The binary digit row of main Serial No. have constituted matrix, and described matrix will be called as the x matrix hereinafter.
In this case, on second dimension, carry out such as the y direction position encoded can according to first dimension in position encoded identical principle carry out.In this lip-deep row, main Serial No. is arranged with different ring shifts then, on the x direction of wherein said row in Fig. 3.Difference is to define between adjacent row, and these differences have formed basic difference sequence.In addition, in second dimension, also can use another main Serial No. and another basic difference sequence.Radix in the different digital sequence can be different from the employed radix of coding in first dimension equally.Yet in this example, on x direction and y direction, used identical sequence.Coding on the y direction will with the x direction on the corresponding mode of coding produce matrix, in this matrix, the row value comprises the binary numeral of main Serial No..
If x matrix and y matrix are overlapping, for each point in the xy matrix that obtains, will there be a bit that comes from the x matrix and a bit that comes from the y matrix so.Can obtain four kinds of following bit combinations at each point thus: 0,0; 0,1; 1,0; With 1,1.For example, from the teeth outwards,, can on figure, encode to these various combinations with method shown in Figure 1.In Fig. 4 A, shown the employed coding of this example.
It should be understood that this coding pattern can oppositely resolve into two coding dimensions, i.e. an x coding dimension and a y coding dimension.Each coding dimension is to be that the forms that 63 of main Serial No. different wheels of 63 bits change are made up of 63 different code blocks of maximum with length basically.Therefore, each coding dimension can only be represented by a small amount of code block.For example, 400 on above-mentioned high 25 centimetres, the wide 15 centimetres page, 000+ symbol can be represented with two coding dimensions that have about 212 code blocks separately.
Yet taking turns commentaries on classics based on all is this identical fact of part, and described expression can also be compact more.Therefore, the coding dimension can only represent with a code block corresponding to main Serial No. that wherein said main Serial No. by physically dislocation or displacement, changes thereby simulate relevant wheel between different row/row.
This compression expression of coding dimension so that form the printable image of coding pattern, so advantageously uses the compression expression of this coding pattern that coding pattern is sent to printer if can recombinate in printer.
This processing can form code block by the one or more bitmap images as the respective symbol sequence and be implemented.In particular, each bit value in the code block all is to be represented by the overlapping of all related symbol, all symbols that wherein said all related symbol are promptly encoded to this bit value.So then can from the original collection of unique mutually symbol, create the set of unique mutually overlapping symbol.Fig. 4 B has described this overlapping symbol at the bit value 0 and 1 of x direction and y direction respectively.
By represent each coding dimension with this overlapping symbol, the coding dimension can be combined, so that form printable image.Fit closely is that the coding dimension is to calibrate with respect to the spatial reference point of its respective symbol each other, so simple " with (AND) " logical operation is realized on pictorial element ground on the coding dimension one by one.In Fig. 4 C, this principle is illustrated with regard to the overlapping symbol among Fig. 4 B.Fig. 4 D has provided two exemplary code block images (bitmap) 40,42, and wherein this image has the overlapping symbol that can be respectively applied for the main Serial No. of expression in x coding dimension and y coding dimension.
The reconstruct of coding pattern has been described in Fig. 4 E, wherein first composograph 44 of x coding dimension is to realize by arrange code block image 40 in the row of mutual displacement with appointment or phase differential, and second composograph 46 of y coding dimension is to realize by arrange code block image 42 in the row of mutual displacement with appointment or phase differential.After the AND operation between image 44,46, coding pattern is as the bitmap in the indicated zone of dashed rectangle 48 and rebuilt.
Should be noted that, " with " logical operation can make otherwise and realize.For example, AND operation can be intrinsic in the code block treatment of picture of combination x and y dimension.In this type of embodiment, one of them code block image can be used as cutting (clipping) zone definitions and embodies, and wherein each overlapping symbol is all represented by one or more so-called clipping regions.The clipping region acts on image, so that keep all images data in the localized area, and abandons remainder data.Therefore, when the code block image of combination x and y dimension, the clipping region of certain dimension will act on the pictorial element of other dimensions, thereby keeps the pictorial element that comprises in the clipping region, simulate thus above-mentioned " with " logical operation.For instance, in Fig. 4 D, code block image 40 or 42 mark can be used as the clipping region of independent mark shape and realize.Those skilled in the art are easy to realize other suitable layout of this clipping region.
Should be noted that visual spatial reference point can be virtual in Fig. 4 A～4D, is sightless thus in graphical symbol.
As discussed previously, the page description file among Fig. 2 A is based on that above-mentioned principle produces.What Fig. 5 described is some key step that can carry out in computing machine 20 in the process that generates page description file 22.
In step 51, the numeral of retrieve encoded layer from the storer that is associated with computing machine 20 suitably.The numeral of coding layer can offer computing machine 20 with the form that produces in advance, is perhaps generated by computing machine 20 as required.For instance, this numeral can comprise above-mentioned value of symbol (0～3), and the mutual spatial disposition between the symbol will be maintained.In addition, described numeral also can be provided by above-mentioned x and y matrix.Equally, step 51 can comprise the numeral of the Information Level that will print is retrieved.
Step 52 comprises to be retrieved the image definition of each the main Serial No. that uses in coding pattern.Suitably, this image definition is predefined, and this definition can be sent to printer with page-describing code afterwards.In addition, described image definition can reside in the nonvolatile memory of printer.
In step 53, can resolve the numeral of coding layer according to main Serial No..More particularly, main Serial No. contrast numeral is shone upon, and discerns row adjacent in x coding dimension and the y coding dimension and the displacement between the row thus respectively.In this map operation, suitably, use the form identical to represent main Serial No. with numeral, for example use the form identical to represent main Serial No. with the sequence of value of symbol (0～3) or bit value (0～1).
In step 54, create the compression expression of coding pattern, and each coding dimension all is to represent with the code block picture number of every row/row or displacement or the relative phase difference between adjacent column/row.This compression expression will shorten the time that is used to transmit and handle final page description file.
In step 55, for Information Level produces page-describing code (with reference to Fig. 2 B).This step can realize according to prior art well known by persons skilled in the art.
In step 56, the compression expression of coding pattern is merged in the page-describing code, so that be that Information Level and coding layer produce a final page description file.
Produce with image-related expression (step 53～54) before or simultaneously, step 55 and 56 can selectively be performed.In addition, step 56 can be carried out before step 55 or with it simultaneously.In addition, can get rid of step 55 fully lacking under the situation of Information Level.
Should also be noted that if the numeral that is retrieved has identified the mutual displacement of main Serial No. on each dimension, then can get rid of step 53.
The above-mentioned generative process of page-describing code is adapted at being controlled by to be carried out in the computing machine 20 of computer program, wherein said computer program can be embodied in the recording medium, be stored in the computer memory, be embodied in the ROM (read-only memory) or on electric carrier signal and carried.
Final page description file can produce with widely used text based PostScript programming language.Provided this illustrative example that is used to produce the PostScript file of coding pattern with the form of false code below.
％?define?image?of?x-dimension?main?number?sequence?symbols
drawvertical：code...
％define?image?of?y-dimension?main?umber?sequence?symbols
drawhorisontal：code...
％?define?overall?clipping?region(visible?part?of?the?generated?pattern)
code...
％push?x-dimension?shifts?to?stack
0?4?23?53?23?12?34?53?23?12?...
％?generate?composite?image?of?x-coding?dimension
1?1?1485
{
pop ％?remove?counter
gsave
0?exch?moveto ％?take?first?shift?and?move?to?correct?position
(x-shift)，swap?top?values?on?stack
drawvertical ％?repeat?this?line?as?many?times?as?needed?to
fill?a?vertical?column?of?the?paper
grestore
10?rmoveto ％?move?to?next?column
}for
％?push?y-dimension?shifts?to?stack
0?4?23?53?23?12?34?53?23?12?...
％?generate?composite?image?of?y-coding?dimension
1?1?2475
{
pop ％?remove?counter
gsave
0?moveto ％?take?first?shift?and?move?to?correct?position
drawhorisontal ％?repeat?this?line?as?many?times?as?needed?to
fill?a?horisontal?row?of?the?paper
grestore
0?1?rnoveto ％?move?to?next?line
}for
％?apply?AND?operation?to?composite?images
code...
％?apply?clipping?region
code...
showpage
In above-mentioned PostScript sign indicating number, the coding dimension is represented with one group of function/program definitions and one group of func-tion/program calls.Function/program definitions can overlap the code block image of coded identification, and func-tion/program calls then can be represented with the form of the given unique identifier of one or more characters.
Scheme can define and use font to come the main Serial No. in the representation page description document by means of corresponding font characters as an alternative.For example, can define font characters (A) and produce code block image 40 among Fig. 4 D, can define font characters (B) and produce code block image 42 among Fig. 4 D.Therefore, font characters can substitute above-mentioned func-tion/program calls.Described font can be defined as bit-mapped font or cutline font.In bit-mapped font, each character all is to represent as the image of fixed size pixel.In cutline font, the size of each character can be adjusted, and represents with mathematic(al) representation.
This method based on font has a lot of general advantages.Font characters is represented very compact and can be used to reduce the coded order number.In addition, digital printer can be handled and be optimized usually at font, even can be equipped with the dedicated cache storer that is used for font defi-nition.In addition, because font characters has pre-sizing (bit-mapped font) or the size (cutline font) that can set, so printer can be calibrated continuous character automatically under the situation that does not need clear and definite reset instruction.Can also help to improve the processing speed of printer like this.
It should be understood that, actual page description file can comprise more multielement (expense), the definition of for example definition of coding pattern base attribute (for example mesh spacing, mark size, marking bias), font characters, is used in the printer instructions of font dictionary structure customization font and is used to the printer instructions of retrieving and regulating the customization font and font being set at current font etc.Actual page description file can also comprise page-describing code and the coding pattern that is used for the graph data printed.
Get back to height and be 25 centimetres and wide be 15 centimetres page instance, conventional PostScript sign indicating number will surpass 800,000 bytes, is to be approximately 20 and above-mentioned Method of printing will produce, the PostScript file size of 000 byte (expense that comprises about 10,000 bytes).Little file size can make distribution more convenient.For example, the PostScript file can be contained in the Email of giving the take over party, and the take over party can send to printer with file.As selection, take over party's application program can executable operations, so that produce the PostScript sign indicating number or any other drawing object selected that are used for email message, and it is attached in the PostScript file as Information Level, so that in printer, handle subsequently.Thus, the take over party can arbitrarily produce the substrate through coding.
What Fig. 6 described is the processing that realizes in receiver when receiving page description file.In step 62, the image of the main Serial No. of retrieval x and y dimension definition from page description file.In step 63, retrieval is used to indicate the shifted data of the relative phase difference between adjacent column/row from page description file.In step 64, produce printable image according to shifted data and the given code block image of image definition.Suitably, the code block image is arranged according to shifted data and is merged, and forms above-mentioned composograph thus, then, described composograph by " with " logical operation is combined, thereby forms printable image.
In another embodiment, printer operation also not exclusively is controlled by the programming instruction of page description file.The substitute is, printer has by software and/or hardware to be realized to produce the special-purpose pattern generation module of coding pattern.When receiving the request of printing coding pattern, the numeral of this module retrieve encoded pattern (shown in the optional step among Fig. 6 61), the image definition of the main Serial No. that retrieval is relevant, associated wheel during reference numbers is represented is changeed and displacement, and produces printable image according to displacement and the given code block image of image definition.Print request can comprise numeral, and wherein for example, described numeral can adopt the form of above-mentioned value of symbol or bit value.As selection, as described in applicant's International Patent Application WO 02/082366, this request can include only the information on the border that is used to describe the absolute position of soon encoding in substrate, and this module can be retrieved relevant numeral thus.
For the sake of completeness, some chief component that can be used for printing according to the present invention the conventional digital printer of coding pattern has been described in Fig. 7.This digital printer can comprise primary processor 70 (for example CPU, microprocessor), working storage 71 (for example RAM), stored memory 72 (for example nonvolatile memory of ROM, PROM, EEPROM, flash memory etc.), raster image processor (73), print engine controller 74 and communication interface 75 (for example USB, live wire, IrDA, bluetooth, Ethernet, parallel port, modulator-demodular unit), and these equipment are interconnected on bus structure 76.Stored memory 72 is preserved the software that is used for primary processor 70 and RIP73, and preserves the data that comprise any resident font.When primary processor 70 received page description file via communication interface 75, its can operate to RIP73, so that convert page-describing code the image of rasterisation to, wherein said image will be kept in the working storage 71.Alternatively, can handle, in the image of two separation, to produce coding layer and Information Level page description file.Then, can operate print engine controller 74, with the image of retrieval rasterisation from working storage 71, and, can control print engine 77, with the hard copy of the image that produces rasterisation.In addition, printer can also be equipped with above-mentioned pattern generation unit, this unit can be used as the hardware cell that links to each other with bus structure 76 and realizes, also can be used as the software unit that is stored in the stored memory 72 and realizes that the combination that perhaps can be used as said two devices realizes.
Can carry out multiple variation according to the present invention.Description above provides in order to carry out illustration and description.It is not exhaustive and the present invention is not limited to disclosed exact form yet.Have some modifications and variations according to above-mentioned instruction, perhaps also can obtain these modifications and variations by implementing the present invention.
For example, above-mentioned coding pattern is to be encoded in the absolute position by first coordinate of x direction and second coordinate of y direction.In an alternative, one or two dimension is encoded to other data except that position data, and is for example, disclosed such in applicant's International Patent Application WO 01/71653.What should state in addition is that main Serial No. can extend along equidirectional in two dimensions, rather than is mutually orthogonal as above-mentioned example.
It is noted that said method is limited to described symbol figure never in any form and represents.Fig. 8 A has described another exemplary collection of graphical symbol 80～83.These symbols have adopted four different values that provided by symbol shape, can encode to the information of dibit thus, and one of them bit is encoded to first dimension, and another bit is then encoded to second dimension.What Fig. 8 B described is the corresponding set of overlapping symbol 84～87.
What Fig. 9 A described is another set of graphical symbol 90～93.Wherein triangle symbol has adopted four different values, and these values are provided by symbol shape equally.What Fig. 9 B described is the corresponding set of overlapping symbol 94～97.
What Figure 10 described is the another kind of coding of replacing, and wherein graphical symbol 100～107 has adopted eight different values, and these values are to be provided by the combination with respect to the size and Orientation of the displacement of spatial reference point.This coding pattern can be used for four separable dimensions (each dimension has two different digital values) or two separable dimensions (each dimension has four different digital values) data being encoded.Those skilled in the art readily appreciate that: the set that realizes overlapping symbol is used to print this method that meets the coding pattern of previous example.
Above-mentioned coding pattern only is presented in order to carry out illustration.In these and other correlative coding pattern, symbol can have the predetermined differentiable Graphic State of limited quantity, and wherein each described state all can produce a symbolic coding value.These Graphic States can be represented with respect to sense of displacement, coded markings shape, coded markings size (diameter, surface area etc.), coded markings color (tone, gray scale, texture etc.) or any combination of above-mentioned information of correlation space reference point with respect to displacement size, the coded markings of correlation space reference point with coded markings.
Any suitable expression that should also be noted that main Serial No. can be used in page-describing code.For example, one or more code block images are different with being represented as, and each main Serial No. can be expressed as the numeric identifier sequence, for example the actual specific paricular value of Serial No. or its derivative (derivative).In this case, the operation that is used for making up from different dimensions these values can be limited to printer according to look-up table, this is similar to the definition among Fig. 4 A, wherein in described definition, certain combination results of numerical value be used for constituting or identifying the appointment output of respective symbol.Selectively or additionally, combination operation also can be used as the arithmetic combination of numerical value and is limited to printer.Turn back to the coding example of Fig. 4 A, for instance, by at first the bit value and 2 of x dimension being multiplied each other, and, the corresponding bits value of x dimension and y dimension can be combined into correct value of symbol subsequently with the bit value addition of itself and y dimension.Be based on look-up table or algorithm calculations if be used for the data of combinations of definitions operation, so described data can be included in the page-describing code or be kept in advance in the nonvolatile memory of printer.Can control printer, to construct the printable image of coding layer based on the output of combination operation.In this was handled, having mutual steric each unique symbol of appointment or unique symbols can be represented by the given font characters of font defi-nition.Described font defi-nition can be included in the page-describing code, perhaps is kept in advance in the nonvolatile memory of printer.Also described the use font and represent symbol or symbols in International Patent Application PCT/SE2004/000808 of applicant, wherein said application is hereby incorporated by.
This additional embodiments comprises based on the definition of identifier rather than the definition of the image in the page-describing code, and owing to reduced the number of essential combination operation, therefore this embodiment can be benefited from less load being applied on the printer processor, but its cost is the size that has increased page-describing code, but and might increase demand for the access working storage in the printer.
Should be emphasized that also owing to select or needs, Method of printing of the present invention is used to print the process of coding pattern, but it need not be separated in two or more dimensions.Coding pattern still can be represented compactly by the main Serial No. of pattern and predetermined displacement.
It is noted that each dimension can comprise more than one main Serial No..For example, one or more main Serial No.s can be encoded to data, and one or more main Serial No. can provide synchronous in the process that pattern is decoded.At aforesaid US6, can find the example of this synchronous code in 000,621.
In another embodiment, page-describing code comprises the extra-instruction that is used for revising the graphical symbol of intermediate image before producing finally printable image.Can selectively other data be covered on the graphical symbol like this.In applicant's patent disclosure US 2003/0066896 and WO 01/71643, provided the example of coding pattern with this data that are capped.Aforementioned extra-instruction can comprise color, size or the shape that changes selected graphical symbol according to the format rule of appointment.For example, act on intermediate image, can revise size or shape by being scheduled to mask (mask).
Should also be noted that some aspect of the present invention also is applicable to the coding pattern based on acyclic repeated Serial No..
Claims (44)
1. one kind is used to print coding pattern so that from the teeth outwards with the first dimension method of coding data, wherein said coding pattern comprises a plurality of first Parallel Digital sequences, the described first Parallel Digital sequence represents that the difference wheel of the first circulation Serial No. changes, wherein, the position that each local sequence of predetermined length is listed in the first circulation Serial No. is to determine that clearly described method comprises:
The numeral of retrieve encoded pattern;
Sign is described in described numeral takes turns commentaries on classics, is used to indicate each to take turns the first displacement information of the phase differential between commentaries on classics and the described first circulation Serial No. so that derive;
Produce first data structure, in described first data structure, described each of taking turns in the commentaries on classics represents with the described first displacement information and first definition of data that all wherein said first definition of data is represented the described first circulation Serial No.;
First data structure is sent to printer;
Impel printer to convert first data structure to printable image.
2. the process of claim 1 wherein that described first definition of data comprises the definition of first image, this definition is represented the described first circulation Serial No. by at least one code block image.
3. the method for claim 2, each digital value in the wherein said first circulation Serial No. is represented with at least one coded identification in described at least one code block image, the described step of impelling comprises: impelling printer is that each that represent in first data structure is taken turns and changeed described at least one the code block image of retrieval, and arrange and merge the code block image that retrieves thus according to the described first displacement information, so that form first composograph.
4. the method for any one claim in the claim 1～3, wherein coding pattern be printed in case also on described surface with the second dimension coded data, wherein coding pattern comprises a plurality of second Parallel Digital sequences, the described second Parallel Digital sequence represents that the difference wheel of the second circulation Serial No. changes, wherein, the position that each local sequence of predetermined length is listed in the second circulation Serial No. is to determine that clearly described method comprises:
The described of the sign second circulation Serial No. taken turns commentaries on classics in described numeral, is used to indicate each this second displacement information of taking turns the phase differential between commentaries on classics and the described second circulation Serial No. so that derive;
Produce second data structure, in described second data structure, described each of taking turns in the commentaries on classics of the described second circulation Serial No. represents with the described second displacement information and second definition of data that all wherein said second definition of data is represented the described second circulation Serial No.;
Second data structure is sent to printer; And
Impel printer to convert first and second data structures to printable image.
5. the method for claim 4, wherein said second definition of data comprise the definition of second image, and this definition is represented the described second circulation Serial No. by at least one code block image.
6. the method for claim 5, each digital value in the wherein said second circulation Serial No. is represented with at least one coded identification in described at least one code block image, and the described step of impelling comprises: impelling printer is that each that represent in second data structure is taken turns and changeed described at least one the code block image of retrieval, and arrange and merge the code block image that retrieves thus, thereby form second composograph based on the described second displacement information.
7. the method for claim 6, the wherein said step of impelling comprises: impel printer to make up described first and second composographs.
8. the method for claim 6, wherein each coded identification is all encoded to a digital value in the first circulation Serial No. and a digital value in the second circulation Serial No., the described step of impelling comprises: in each code block image, represent each numeral in the first and second circulation Serial No.s respectively by the graphics overlay of whole coded identifications that described digital value is encoded.
9. the method for claim 8, the wherein said step of impelling comprises: impel described printer to calibrate described first and second composographs, in described first and second composographs, determine calibration mutually pictorial element " with " logical value, so that obtain " with " two-dimensional matrix of logical value, and from described two-dimensional matrix, form described printable image.
10. the method for claim 6, wherein each unique combination of digital value in the first circulation Serial No. and the digital value in the second circulation Serial No. all is to represent with predetermined, the differentiable Graphic State of described coded identification.
11. the method for claim 10, wherein each coded identification all comprises coded markings and relevant spatial reference point, and wherein said state is to use the characteristic of selecting from the group that comprises following properties to represent:
Described coded markings is with respect to the displacement size of its correlation space reference point;
Described coded markings is with respect to the sense of displacement of its correlation space reference point;
The shape of described coded markings;
The size of described coded markings;
The color of described coded markings;
And any combination of above-mentioned characteristic.
12. the method for claim 9, wherein each coded identification all comprises coded markings and relevant spatial reference point, and wherein said state is to use the characteristic of selecting from the group that comprises following properties to represent: described coded markings is with respect to any combination with respect to the color and the above-mentioned characteristic of the size of the shape of the sense of displacement of its correlation space reference point, described coded markings, described coded markings, described coded markings of the displacement size of its correlation space reference point, described coded markings; And wherein, the described step of impelling described printer to calibrate comprises: impel described printer to calibrate described spatial reference point.
13. the method for claim 4, wherein the first and second circulation Serial No.s are identical.
14. the method for claim 4, wherein said first and second dimensions are encoded to the absolute position.
15. the method for claim 14, wherein said first and second dimensions are encoded to the absolute position in two-dimensional coordinate system.
16. the process of claim 1 wherein and describedly impel step to comprise page-describing code is sent to described printer, so that carry out therein.
17. the method for claim 16, wherein said generation step comprise described data structure is combined in the page-describing code.
18. the method for claim 2, wherein said image definition is a font defi-nition.
19. the method for claim 18, wherein said font defi-nition definition bit-mapped font.
20. the method for claim 1, wherein coding pattern be printed in case also on described surface with the second dimension coded data, wherein coding pattern comprises a plurality of second Parallel Digital sequences, the described second Parallel Digital sequence represents that the difference wheel of the second circulation Serial No. changes, wherein, the position that each local sequence of predetermined length is listed in the second circulation Serial No. is clearly to determine, described method comprises: the described of the sign second circulation Serial No. taken turns commentaries on classics in described numeral, is used to indicate each this second displacement information of taking turns the phase differential between commentaries on classics and the described second circulation Serial No. so that derive; Produce second data structure, in described second data structure, described each of taking turns in the commentaries on classics of the described second circulation Serial No. represents with the described second displacement information and second definition of data that all wherein said second definition of data is represented the described second circulation Serial No.; Second data structure is sent to printer; And impel printer to convert first and second data structures to printable image; And wherein, described first and second definition of data comprise first and second data item respectively, and wherein said first and second data item are represented a digital value in described first and second Serial No.s separately; The described step of impelling comprises: impel described printer according to the combination operation of appointment spatially corresponding second data item combination with first data item in described first definition of data and described second definition of data.
21. the method for claim 20, each definition in the wherein said data item are used to represent the image of at least one coded identification of a described digital value.
22. the method for claim 20, each in the wherein said data item all comprises the identifier of a described digital value.
23. one kind is used to print coding pattern so that from the teeth outwards with the equipment of the first dimension coded data, wherein said coding pattern comprises a plurality of first Parallel Digital sequences, the described first Parallel Digital sequence represents that the difference wheel of the first circulation Serial No. changes, wherein, the position that each local sequence of predetermined length is listed in the first circulation Serial No. is to determine that clearly described equipment comprises:
The device that is used for the numeral of retrieve encoded pattern;
Be used for changeing so that derivation is used to indicate each to take turns the device of the first displacement information of the phase differential between commentaries on classics and the described first circulation Serial No. described wheel of described numeral sign;
Be used to produce the device of first data structure, in described first data structure, described each of taking turns in the commentaries on classics represents with the described first displacement information and first definition of data that all wherein said first definition of data is represented the described first circulation Serial No.;
Be used for first data structure is sent to the device of printer; And
Be used to impel described printer first data structure to be converted to the device of printable image.
24. the equipment of claim 23, wherein said first definition of data comprise the definition of first image, this definition is represented the described first circulation Serial No. by at least one code block image.
25. the equipment of claim 24, each digital value in the wherein said first circulation Serial No. represents with at least one coded identification that in described at least one code block image described being used for impels described printer that the device that first data structure converts printable image to is comprised: be used to impel printer be first data structure represent each take turns and change described at least one the code block image of retrieval and arrange and merge the code block image that retrieves thus so that form the device of first composograph according to the described first displacement information.
26. the equipment of any one claim in the claim 23～25, wherein coding pattern be printed in case also on described surface with the second dimension coded data, wherein coding pattern comprises a plurality of second Parallel Digital sequences, the described second Parallel Digital sequence represents that the difference wheel of the second circulation Serial No. changes, wherein, the position that each local sequence of predetermined length is listed in the second circulation Serial No. is to determine that clearly described equipment comprises:
Be used for changeing so that derivation is used to indicate each this device of taking turns the second displacement information of the phase differential between commentaries on classics and the described second circulation Serial No. described wheel of the described numeral sign second circulation Serial No.;
Be used to produce the device of second data structure, in described second data structure, described each of taking turns in the commentaries on classics of the described second circulation Serial No. represents with the described second displacement information and second definition of data that all wherein said second definition of data is represented the described second circulation Serial No.;
Be used for second data structure is sent to the device of printer;
Be used to impel printer first and second data structures to be converted to the device of printable image.
27. the equipment of claim 26, wherein said second definition of data comprise the definition of second image, this definition is represented the described second circulation Serial No. by at least one code block image.
28. one kind is used to print coding pattern in printer so that method of coding data from the teeth outwards, described coding pattern comprises a plurality of Parallel Digital sequences, described Parallel Digital sequence represents that the difference wheel of period word sequence changes, wherein, the position that each local sequence of predetermined length is listed in the circulation Serial No. is to determine that clearly described method comprises:
Retrieval is used to represent the definition of data of described circulation Serial No.;
Derivation is used to indicate each to take turns the displacement information of the phase differential between commentaries on classics and the described circulation Serial No.; And
Produce the printable image of described coding pattern according to described displacement information and described definition of data.
29. the method for claim 28, wherein said definition of data comprise the image definition, this image definition is represented described circulation Serial No. by at least one code block image.
30. one kind is used to print coding pattern in printer so that the equipment of coded data from the teeth outwards, described coding pattern comprises a plurality of Parallel Digital sequences, described Parallel Digital sequence represents that the difference wheel of period word sequence changes, wherein, the position that each local sequence of predetermined length is listed in the circulation Serial No. is to determine that clearly described equipment comprises:
Be used to retrieve the device of the definition of data of representing described circulation Serial No.;
Each takes turns the device of the displacement information of the phase differential between commentaries on classics and the described circulation Serial No. to be used to derive indication; And
Be used for producing the device of the printable image of described coding pattern according to described displacement information and described definition of data.
31. the equipment of claim 30, wherein said definition of data comprise the image definition, this image definition is represented described circulation Serial No. by at least one code block image.
32. one kind is used to print coding pattern in printer so that from the teeth outwards with first dimension and the second dimension method of coding data, wherein first dimension of coding pattern comprises a plurality of first Parallel Digital sequences, and second dimension of coding pattern comprises a plurality of second Parallel Digital sequences, wherein each combination of a digital value in first Serial No. and a digital value in second Serial No. all is to represent with the unique coded identification in the described coding pattern, wherein, the described first Parallel Digital sequence represents that the difference wheel of the first circulation Serial No. changes, and the position that each local sequence of predetermined length is listed in the first circulation Serial No. is clearly to determine, and wherein, the second Parallel Digital sequence represents that the difference wheel of the second circulation Serial No. changes, and the position that each local sequence of predetermined length is listed in the second circulation Serial No. is to determine that clearly described method comprises:
At least one the code block image that is used to represent the coded identification of described Serial No. for the retrieval of each Serial No. in each dimension;
Based in each dimension, be used to indicate each take turns change with the respective cycle Serial No. between the displacement information of phase differential arrange and merge the code block image that retrieves thus so that formation respectively with described first dimension and corresponding first and second composographs of described second dimension; And
Make up described first and second composographs, so that form printable image.
33. the method for claim 32, wherein each code block image is represented each described individual digit by the graphics overlay of whole coded identifications of being used for the digital value of each individual digit of correlated digital sequence is encoded.
34. the method for claim 33, wherein said combination step comprises: described first and second composographs are calibrated; In described first and second composographs, determine calibration mutually pictorial element " with " logical value so that obtain " with " two-dimensional matrix of logical value; And from described two-dimensional matrix, form described printable image.
35. the method for claim 32, wherein said code block image is comprised in the font defi-nition.
36. the method for claim 32, wherein this method utilization is by the control of the page-describing code that printer received.
37. the method for claim 36, wherein said page-describing code comprise the image definition, the described code block image of described image definition definition.
38. the method for any one claim in the claim 32～37, described method comprises: be used for the described initial step of taking turns the position of commentaries on classics of sign in first and second dimensions of coding pattern.
39. the method for claim 38, wherein said combining step is included as a plurality of identical code block image that each dimension merges the coded identification that is used to represent described circulation Serial No., and described identical code block image is arranged according to described displacement information and with phase differential.
40. one kind is used to print coding pattern in printer so that from the teeth outwards with the equipment of first dimension and the second dimension coded data, wherein first dimension of coding pattern comprises a plurality of first Parallel Digital sequences, and second dimension of coding pattern comprises a plurality of second Parallel Digital sequences, wherein each combination of a digital value in first Serial No. and a digital value in second Serial No. all is to represent with the unique coded identification in the described coding pattern, wherein, the described first Parallel Digital sequence represents that the difference wheel of the first circulation Serial No. changes, and the position that each local sequence of predetermined length is listed in the first circulation Serial No. is clearly to determine, and wherein, the second Parallel Digital sequence represents that the difference wheel of the second circulation Serial No. changes, and the position that each local sequence of predetermined length is listed in the second circulation Serial No. is to determine that clearly described equipment comprises:
Be used to each Serial No. retrieval in each dimension to be used to represent the device of at least one code block image of the coded identification of described Serial No.;
Be used for based on be used in each dimension to indicate each take turns change with the respective cycle Serial No. between the displacement information of phase differential arrange with merge described code block image in case formation respectively with the device of described first dimension and corresponding first and second composographs of described second dimension; And
Be used to make up described first and second composographs so that form the device of printable image.
41. the equipment of claim 40, wherein each code block image is represented each described individual digit by the graphics overlay of whole coded identifications of being used for the digital value of each individual digit of correlated digital sequence is encoded.
42. the equipment of claim 41, the wherein said device that is used to make up comprises: be used for device that described first and second composographs are calibrated; Be used for described first and second composographs determine calibration mutually pictorial element " with " logical value so that obtain " with " device of the two-dimensional matrix of logical value; And the device that is used for forming described printable image from described two-dimensional matrix.
43. comprising, the equipment of any one claim in the claim 40～42, described equipment is used in first and second dimensions of coding pattern, initially identifying described device of taking turns the position of commentaries on classics.
44. the equipment of claim 43, wherein, the described device that is used to merge comprises: be used to each dimension to merge to be used to the device of a plurality of identical code block image of the coded identification of representing described circulation Serial No., described identical code block image is arranged according to described displacement information and with phase differential.
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| SE0301729A SE0301729D0 (en) | 2003-06-13 | 2003-06-13 | Need-controlled printing of coding patterns |
| US60/477,926 | 2003-06-13 |
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| CN1806249A CN1806249A (en) | 2006-07-19 |
| CN100483451C true CN100483451C (en) | 2009-04-29 |
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| DE112015005883T5 (en) | 2015-01-30 | 2017-09-28 | Hewlett-Packard Development Company, L.P. | M-EARS CYCLIC CODING |
| CN108664964A (en) * | 2017-04-02 | 2018-10-16 | 田雪松 | File output method with coding pattern |
| CN107103350B (en) * | 2017-05-04 | 2020-06-09 | 网易（杭州）网络有限公司 | Physical medium surface multi-dimensional position coding method and device and readable storage medium |
| CN107122067B (en) * | 2017-05-04 | 2020-09-08 | 网易（杭州）网络有限公司 | Method and device for encoding and decoding surface position of physical medium and readable storage medium |
| CN109242509B (en) * | 2018-08-20 | 2021-09-14 | 同济大学 | Lattice character information coding and decoding method for commodity outer package |
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| WO2001075779A1 (en) * | 2000-04-05 | 2001-10-11 | Anoto Ab | Method and device for processing of information |
| WO2002082366A1 (en) * | 2001-04-05 | 2002-10-17 | Anoto Ab | Method for processing information |
| CN1377488A (en) * | 1999-10-01 | 2002-10-30 | 阿诺托股份公司 | Position determination-calculation |
| WO2003001440A1 (en) * | 2001-06-25 | 2003-01-03 | Anoto Ab | Method for achieving a position code and decoding a position code |
| WO2003003288A1 (en) * | 2001-06-28 | 2003-01-09 | Anoto Ab | Hand held drawing device capable of composing and transmitting electronic messages |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377488A (en) * | 1999-10-01 | 2002-10-30 | 阿诺托股份公司 | Position determination-calculation |
| WO2001075779A1 (en) * | 2000-04-05 | 2001-10-11 | Anoto Ab | Method and device for processing of information |
| WO2002082366A1 (en) * | 2001-04-05 | 2002-10-17 | Anoto Ab | Method for processing information |
| WO2003001440A1 (en) * | 2001-06-25 | 2003-01-03 | Anoto Ab | Method for achieving a position code and decoding a position code |
| WO2003003288A1 (en) * | 2001-06-28 | 2003-01-09 | Anoto Ab | Hand held drawing device capable of composing and transmitting electronic messages |
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| SE0301729D0 (en) | 2003-06-13 |
| CN1806249A (en) | 2006-07-19 |
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