Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
  • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
  • H04L51/58—Message adaptation for wireless communication
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
  • G06Q20/00—Payment architectures, schemes or protocols
  • G06Q20/04—Payment circuits
  • G06Q20/045—Payment circuits using payment protocols involving tickets
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
  • H04W4/12—Messaging; Mailboxes; Announcements
  • H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]

Definitions

• the present invention generally relates to the field of communication, and more particularly, to a system and a method of transmitting an electronic voucher through a short message.
• Electronic vouchers are widely employed in the fields of electronic ID recognition and electronic payment voucher. By making traditional vouchers electronic, the cost of vouchers is reduced, the safety of vouchers is enhanced, and electronic commerce is provided with electronic voucher means.
• the major businesses forms of the voucher means include electronic tickets (such as performance admission tickets, sport event tickets, film tickets, sight spot admission tickets, train and ship tickets, air tickets etc.), electronic coupons, electronic delivery coupons, electronic membership cards, electronic ID cards and the like.
• a typical electronic voucher business is electronic coupon.
• a user acquires an electronic coupon by ways such as Internet, call center.
• the user can download and print an electronic coupon via an Internet website, and can also submit a mobile telephone number to a website, so as to facilitate the website to issue an electronic coupon via, such as, a multimedia message of the mobile telephone.
• a user may dial the telephone number of a call center and the call center may push an electronic coupon to the user as requested.
• the user may show the electronic coupon received by his mobile telephone to a merchant. After recognizing and reading processing by the merchant' electronic voucher terminal, the user may use the electronic coupon to enjoy discount and favorable price.
• a typical way to issue an electronic voucher is by multimedia message, i.e., issuing an image format, optically readable electronic voucher through a multimedia message.
• multimedia message i.e., issuing an image format, optically readable electronic voucher through a multimedia message.
• a user uses the electronic voucher, he needs to show the multimedia message to a merchant, so as to facilitate the user or the merchant to recognize and verify the electronic voucher on an optical recognition terminal.
• Another typical way to issue an electronic voucher is by short message, i.e., issuing the voucher number of an electronic voucher to a user's mobile terminal through a short message.
• short message i.e., issuing the voucher number of an electronic voucher to a user's mobile terminal through a short message.
• the user uses the electronic voucher, he needs to show the short message to a merchant, so as to facilitate the user or the merchant to input the voucher number of the electronic voucher into a voucher verification/recycling terminal.
• a short message with WAP PUSH format may also be issued through WAP PUSH, upon opening the short message and clicking the URL of the short message, the user then may download actively an image including an electronic voucher.
• a further typical way to issue an electronic voucher is by enhanced short message, i.e., issuing an electronic image format, optically readable voucher through an enhanced short message.
• enhanced short message i.e., issuing an electronic image format, optically readable voucher through an enhanced short message.
• a user uses the electronic voucher, he needs to show the multimedia message to a merchant, so as to facilitate the user or the merchant to recognize and verify the electronic voucher on an optical recognition terminal.
• the way of issuing an electronic voucher through a multimedia message is facing more extensive problems, including: the cost of issuing a multimedia message is higher, which has formed a serious obstacle to a voucher businesses with a larger business capacity; the cognitive level of users to multimedia message is low (Many users are unable to use multimedia message service); not all users' terminals support multimedia message service; the accessible rate of an issued multimedia message is low; and a multimedia message needs to be adapted in terms of the size and resolution of a user' s mobile terminal, whereas the information of the terminal belongs to the user' s privacy and is not easy to obtain (one may not achieve the information of the user's mobile terminal unless supported by its operator) and so on.
• an electronic voucher business can be realized though a short message and an electronic voucher can be automatically recognized by a recognition terminal, not only the problems that Internet and multimedia message electronic voucher business faces can be well resolved, but also the problem of input error while sending the number of the electronic voucher can be resolved.
• Short message business/services is one of the mobile businesses which are widely accepted by users, almost all of mobile terminals support short message services. The cost of short message service is low, the accessible rate of issuing is high, and the adaptation in terms of the brand and type of a mobile terminal is not needed.
• OCR optical character recognition
• the basic principle of optical character recognition is comparing a "character" separated from the image with the standard samples in template library, and judging the character which the "character" belong to according to the matching degree.
• the solution of the present invention is to categorize a character set based on features for reducing the number of standard samples in a template library, and thus reducing the CPU computational load and improving the speed and success ratio of recognition.
• the following features belong to simple comparison features: axial symmetry and rotational symmetry of the text characters, number or proportion of dark spots, dispersion of dark spots, number of lines, type of lines, projection histogram features in x axis and y axis, frequency domain features in x axis or y axis, and type or number or position of cross points of lines, and so on.
• eliminating some characters (such as "I” and "1”; “O” and “0”; and " ⁇ ” and '%") subjected to misidentifying simplifies the comparison algorithm significantly, and improves the speed and success ratio of recognition.
• Another feature of the present invention is to improve the safety of an electronic voucher through "many to one" mapping method between characters and bit groups. When many characters could be mapped to same code information, it will significantly improve the difficulty of deciphering, and conjecturing the context of the electronic voucher and the way of coding, so as to enhance the security of electronic voucher business.
• the solution of the present invention is dividing text characters into m groups in terms of their geometry or image features, and m is not less than 2.
• these text characters are read by an optical apparatus, they are decoded to different code information (bit groups) according to the categories to which the text characters belong.
• This method of dividing the character set to character groups will significantly reduce the CPU computational load and memory consumption when the characters are recognized, so it is more suitable to implement optical reading on a mobile terminal.
• a method of transmitting an electronic voucher through a short message comprises: converting an electronic voucher to be transmitted into a bit stream; mapping each n-bits of the bit stream to any one text character of one of a plurality of text character groups, wherein text characters in each of the text character groups have at least one same or similar feature, and bit number n corresponding to each text character depends on the number m of the text character groups; arranging the text characters obtained through the mapping into a character sequence; and transmitting the character sequence through a short message.
• the method may further comprises, before the operation of mapping, forming a code word stream after encoding and adding an error correcting code stream to the bit stream.
• the method may comprises adding at least one locator character and at least one control character to the text character sequence, and adding at least one linefeed character to arrange the text character sequence into a text character code pattern, and then transmitting the text character code pattern through a short message.
• a method of acquiring an electronic voucher through a short message comprises: receiving a text character sequence through a short message; recognizing features of text characters in the text character sequence in an optical manner, and determining to which one of a plurality of text character groups each text character belongs based on at least one feature of each text character, wherein text characters in each of the text character groups have at least one same or similar feature; mapping each text character to bits or a bit group corresponding to the text character group determined to form a bit stream; and decoding the bit stream to acquire the content of the electronic voucher.
• the method may further comprises at least one locator character, at least one control character and at least one linefeed character, and the text character sequence is displayed in the form of a text character code pattern.
• the text characters in each of the text character groups have at least one same or similar geometry or image feature.
• the text character groups are formed by grouping of GB2312 codes, ASCII codes, numerals and English alphabets or full-width English alphabets in terms of their geometry or image features.
• the method may further comprise dividing a text character set into m text character groups in terms of the geometry or image features of the text characters of the text character set, and wherein m is not less than 2.
• a criterion of dividing the text character set in terms of the geometry or image features of the text characters of the text character set may comprise axial symmetry and rotational symmetry of the text characters.
• a criterion of dividing the text character set in terms of the geometry or image features of text characters of the text character set may comprise: number or proportion of dark spots, dispersion of dark spots, number of lines, type of lines, projection histogram features in x axis and y axis, frequency domain features in x axis or y axis, and type or number or position of cross points of lines.
• a criterion of dividing the text character set in terms of the geometry or image features of text characters of the text character set may comprise geometry features, image features of the various regions, wherein each text character is segmented into p regions, and p is not less than 2.
• a system of transmitting an electronic voucher through a short message comprises: a bit stream converting unit for converting an electronic voucher to be transmitted into a bit stream; an encoding unit for mapping each n-bits of the bit stream to any one text character of one of a plurality of text character groups, wherein text characters in each of the text character groups have at least one same or similar feature, and bit number n corresponding to each text character depends on the number m of the text character groups; a character sequence formation unit for arranging the text characters obtained through the mapping into a character sequence; and a transmission unit for transmitting the character sequence through a short message.
• system may further comprise a code pattern formation unit for adding at least one locator character and at least one control character to the text character sequence, and adding at least one linefeed character to arrange the text character sequence into a text character code pattern, and then transmitting the text character code pattern through a short message via the transmission unit.
• a code pattern formation unit for adding at least one locator character and at least one control character to the text character sequence, and adding at least one linefeed character to arrange the text character sequence into a text character code pattern, and then transmitting the text character code pattern through a short message via the transmission unit.
• a system of acquiring an electronic voucher through a short message comprises: a receiving unit for receiving a text character sequence through a short message; a recognition unit for recognizing features of text characters in the text character sequence in an optical manner, and determining to which one of a plurality of text character groups each text character belongs based on at least one feature of each text character, wherein text characters in each of the text character groups have at least one same or similar feature; a decoding unit for mapping each text character to bits or a bit group corresponding to the text character group determined to form a bit stream, and decoding the bit stream to obtain the content of the electronic voucher.
• the text character sequence may further comprise at least one locator character, at least one control character and at least one linefeed character, and the text character sequence is displayed in the form of a text character code pattern.
• a character code comprising text characters
• the text characters respectively belong to one of a plurality of text character groups, and text characters in each of the text character groups have at least one same or similar geometry or image feature.
• the text character sequence may further comprise at least one locator character, at least one control character and at least one linefeed character, and the text character sequence is arranged into a matrix type text character code pattern.
• the text character groups are formed by grouping of GB2312 codes, ASCII codes, numerals and English alphabets or full- width English alphabets in terms of their geometry or image features.
• the cost of issuing an electronic voucher is greatly reduced, the convenience for users' access is greatly increased, and the users' mobile terminals have a good compatibility with this way of application. Moreover, safety and stability of the entire system are greatly enhanced, and the system is suitable for current network application environment.
• FIG.1 illustrates an exemplary dividing of text character groups according to one embodiment of the present invention
• FIG.2 illustrates an exemplary data stream of an electronic voucher transmitted through a short message according to one embodiment of the present invention
• FIG.3 illustrates a flow diagram to acquire an electronic voucher through a short message according to one embodiment of the present invention
• FIG.4 illustrates an exemplary system of transmitting an electronic voucher through a short message according to one embodiment of the present invention
• FIG.5 illustrates an exemplary system of acquiring an electronic voucher through a short message according to one embodiment of the present invention.
• FIG.6 illustrates an exemplary character code according to one embodiment of the present invention; wherein the character code includes a code pattern which is constituted by text characters, locator characters and control characters.
• text characters are divided into a plurality of groups/categories in terms of their geometry features or image features. This method of dividing the character set to character groups will significantly reduce the CPU computational load and memory consumption when the characters are recognized, so it is more suitable to implement optical reading on a mobile terminal.
• the way of dividing text characters will be schematically described below with reference to FIG. 1.
• English alphabets are employed as a text character set for mapping bit stream groups according to one particular embodiment of the present invention.
• text character group 1 may include English alphabets such as H, I, O, X, o, x
• text character group 5 may include English alphabets such as F, P and r.
• the number of characters included in each of text character groups may be equal or may be unequal (the number of characters in the text character groups as shown in this embodiment is unequal).
• the present invention is not limited in this respect.
• the text character groups may be formed by grouping GB2312 codes, ASCII codes, numerals and English alphabets, or full-width English alphabets in terms of their geometry features or image features. According to one embodiment of the present invention, there is at least one text character group which includes two or more text characters.
• text characters in each of the text character groups may have same or similar geometry features or image features.
• text characters classified in the same text character group may have at least one same or identical geometry feature, and/or have at least one same or identical image feature.
• the text characters may have at least one similar geometry feature, and/or have at least one similar image feature.
• those characters having at least one feature which meets a certain principle of statistics, a certain principle of matching degree or other classification principles as can be figured out by those skilled in the art may be considered to have similar feature and may be classified into a same text group.
• text characters in a text character group may include both strictly lateral symmetry characters, and may also include characters of which the degree of lateral symmetry reaches to a criterion (such as 80%). The criterion may be adjusted as required.
• text characters in a text character set may be divided in terms of the text characters' axial symmetry and rotation symmetry.
• the text character set is divided in terms of one or a combination of: number or proportion of dark spots, dispersion of dark spots, number of lines, type of lines, projection histogram features in x axis and y axis, frequency domain features in x axis or y axis, and type or number or position of cross points of lines.
• firstly each of the text characters may be segmented into p (p>2) regions, then the text characters are grouped based on the geometry features, image features of the various regions.
• English alphabet H, I, O, X, o, x included in character group 1 are of longitudinal Symmetry (up-down symmetry) and lateral symmetry (left-right symmetry) image and geometry features
• English alphabet N, S, Z, s and z included in character group 7 are not of longitudinal symmetry and lateral symmetry features, but are of image and geometry features with same or similar vertical and horizontal mirror images.
• each text character group may correspond to one binary bit group.
• each of the characters belonging to a same character group may be mapped to the binary bit group corresponding to the character group, thus each of the characters represents the same information.
• two completely different character sequence HBT and character sequence ICV may represent completely same information, namely, both correspond to binary bit stream "000-001-010".
• FIG.2 shows an exemplary data stream of an electronic voucher transmitted through a short message according to one embodiment of the present invention.
• An electronic voucher generally has a unique voucher number.
• the voucher number may be a string of numerals (such as 12345678901234567890), a string of English alphabets (such as ABCDEFGHIJKLMNO) or a combination of numerals and English alphabets (such as A1BCD2E34567FG89) and so on, and the voucher number may include such information as serial number, encrypted information and scramble of the electronic voucher.
• the voucher number of an electronic voucher may be encoded into a bit stream.
• FIG.2 illustrates a typical data stream of a numeral type voucher number. Firstly, voucher number 201 is divided with two numerals for each group to obtain grouped numeral sequence 202, namely, voucher number "123456789" is divided into "12-34-56-78-9".
• combinations 203 with two numerals may be respectively mapped to the 0000000-1100011 portion (corresponding decimal space is 00 ⁇ 99) of binary space 0000000-1111111 (corresponding decimal space is 0 ⁇ (2 7 -l), equal to 127), such as numeral combination "12" is mapped to "0001100".
• two-digit numeral sequence 203 is mapped into seven digit binary sequence 204.
• mapping mode is shown herein, whereas there are also many similar mapping modes may achieve the same object: such as making combinations with three numerals (the minimum is 000, the maximum is 999) be mapped to binary space 0000000000-1111100111 (corresponding decimal space is 000-999).
• each code word includes 8 bits.
• the code word may also include other bits, such as 4 bits, 6 bits etc.
• a code word stream 207 is obtained by performing filling for the code word stream 206. At this moment, extra code words may be obtained by checking, error correcting, encrypted algorithm, and the extra code words together with the code word stream 207 form an encoded code word stream 208.
• the encoded code word stream 208 may be split, with each n bits for a bit group.
• bit number n of the split bit groups depends on the number m of the text character groups.
• the encoded code word stream 208 is split, with each 3 bits for a bit group, and these bit groups form bit group stream 209.
• the bit group stream 209 is mapped into a character sequence 210.
• any characters in the same character group all represent the same information, such as character H, I, O and X all represent the same information.
• one character may be arbitrarily selected from the character group 1 as shown in FIG. 1.
• mapping the character sequence 210 as shown in FIG.2 is obtained.
• At least one locator character, at least one control character and/or at least one linefeed character may be added into the character sequence 210, to form a matrix type character code 211.
• auxiliary explanation and description information may also be added at the head and/or end of the character code 211, so as to form a text short message 212.
• any one character or symbol which can be sent by a text short message may all act as a locator character and/or a control character. In other embodiment, it may not need to add auxiliary information, or it may need to add other contents to form a text short message 212.
• the present invention is not limited in this respect.
• the text short message as generated above may then be issued to a user's mobile terminal, so as to achieve the object of safely and conveniently transmitting an electronic voucher by the way of text short message.
• the cost of issuing an electronic voucher is greatly reduced, the convenience for users' access is greatly increased, and the users' mobile terminals have a good compatibility with this way of application.
• safety and stability of the entire system are greatly enhanced, and the system is suitable for current network application environment.
• FIG.3 shows a flow diagram 300 of acquiring an electronic voucher through a short message according to one embodiment of the present invention.
• a text code pattern containing an electronic voucher is issued to a mobile terminal by the way of short message 301.
• the user may display the above text code pattern containing the electronic voucher onto a recognition terminal, so as to submit the above text code pattern to the recognition terminal for recognition 302.
• the recognition terminal may have image acquiring devices such as a USB-camera, a camera and the like to acquire a still image of the text code pattern 303.
• the still image acquired by the image acquiring devices is transmitted to a recognition device, the recognition device may sense whether a locator character exists in the image, so as to determine whether the image is a valid code pattern 304, and locate the position of the code pattern 305.
• the image may also be transformed in order to retrieve an accurate image from its transfigurations due to perspective transformation and/or rotation.
• the present invention is not limited in this respect. Because the quality of a still image acquired by the image acquiring devices is different, the still image possibly further needs to be pretreated, wherein the methods of pretreating the image include, but not limited to, denoising, filtering, gray scaling, binarization and the like.
• the number of locator characters may be any number of texts or symbols suitable for being sent by a short message
• the control information of a code pattern may be stored any position in the code pattern.
• the control information may include, but not limited to, the number m of character groups, error correcting level, edition information and the like.
• the recognition device may segment a character area from the image using image segmentation technology or other technical means, and then achieve the separated blocks corresponding respectively to all characters within the area and determine the text character groups to which the characters belong in terms of the geometry features and/or image features of the blocks 306.
• the recognition device may acquire the matching possibility between each image block and each character, so as to determine the character matching with each image block by applying a suitable algorithm based upon these matching records, and then determine the text character group to which the determined character belongs in terms of the geometry features or image features of the determined character.
• the recognition device may simply determine the text character group to which each character belongs without determining the characters.
• the recognition device transmits the recognition information to an encoding device, and then the encoding device may perform decoding in terms of the control information included in a character sequence. Specifically, the encoding device may map the text characters to bit groups 307 corresponding to the determined character groups according to the recognition information. In one embodiment, bit groups may also be split into code words to form a code word stream to which checking, decryption or error correcting operation may be applied. As described above, the present invention may also be achieved without these processes, or additional processes may be added by those skilled in the art according to requirements of applications. However, the present invention is not limited in this aspect. As such, the encoding device may obtain the transmitted original electronic voucher 308 according to the obtained bit stream. Thereby, the flow 300 of acquiring the electronic voucher by a short message concludes 309.
• An electronic voucher may be directly sent and received through a text character sequence, the text character sequence may include or may not include any one of a locater character, a control character or a linefeed character or their combination.
• an electronic voucher may be sent in the form of a text character sequence, while the received text character sequence may be displayed in the form of a matrix type code pattern on a mobile terminal.
• the applicant of the present invention anticipates that there are also other variations and these variations all fall within the scope of the present invention.
• FIG.4 shows an exemplary system of transmitting an electronic voucher through a short message according to one embodiment of the present invention.
• a transmitting system 400 of an electronic voucher includes a bit stream converting unit 401, an encoding unit 402, a character sequence forming unit 403 and a transmission unit 404.
• a bit stream converting unit 401 is used for converting an electronic voucher into a bit stream.
• the converting method may involve directly converting the electronic voucher, and may also involve converting the electronic voucher after encrypting it.
• the encoding unit 402 is used for mapping each n-bits of the bit stream to any one character in one text group of a plurality of text character groups.
• text characters in each of the text groups have at least one same or similar feature, and the bit number n corresponding to each text character depends on the number m of the text groups.
• a text character sequence may be obtained.
• the character sequence forming unit 403 is used for arranging the text characters into a text character sequence.
• the transmission unit 404 is used for transmitting the obtained text character sequence through a short message.
• the way of transmitting a short message includes, but not limited to, point-to-point short message, batch-sending short messages by setting up long connection with a short message gateway.
• the character sequence may be sent in the form of a code pattern
• the system may also include a code pattern forming unit (not shown) for adding a locator character and/or a control character into the obtained text character sequence, and adding a linefeed character to arrange the character sequence into a text character code pattern.
• FIG.5 shows an exemplary system of acquiring an electronic voucher through a short message according to one embodiment of the present invention.
• an acquiring system 500 of an electronic voucher includes a receiving unit 501, a recognition unit 502 and a decoding unit 503.
• a receiving unit 501 for receiving a text character sequence through a short message; a recognition unit 502 for recognizing features of text characters in the text character sequence in an optical manner, and determining to which one of a plurality of text character groups each text character belongs based on at least one feature of each text character, wherein text characters in each of the text character groups have at least one same or similar feature; a decoding unit 503 for receiving the recognition information that recognition unit 502 generated and mapping each text character to bits or a bit group corresponding to the text character group determined to form a bit stream, and decoding the bit stream to obtain the content of the electronic voucher.
• a receiving unit 501, a recognition unit 502, and a decoding unit 503 could be a mobile terminal, a fixed terminal, or a constituent part of a mobile terminal or a fixed terminal.
• FIG.6 shows exemplary character codes according to one embodiment of the present invention, which include character code patterns with text characters, locator characters, and control characters.
• code pattern 601 is a character code pattern using character "•" as locator characters, where the character sequence is arranged in a matrix type by linefeed characters; .
• Code pattern 602 is a code pattern which is formed by adding business illustration, description information of the electronic voucher on the basis of the code pattern 601.
• Code pattern 603 is an exemplary code pattern which does not use locator character or linefeed character but is automatically line fed by terminal screen, where the text character sequence is directly arranged in one-dimensional mode to form code pattern.
• Code pattern 605 is an exemplary code pattern that takes "®" as locator characters to define the start/stop positions of each row, where the text sequence is arranged in two-dimensional matrix after being line fed by linefeed characters.
• Code pattern 606 is an exemplary code pattern which is formed by being arranged in two-dimensional matrix after the text sequence is line fed by linefeed characters. Code pattern 606 does not use locator character.
• a locator character or a control character can be any text or character which could be sent through a short message.
• the present invention comprises a plurality of operations.
• the operations of the present invention could be implemented by hardware or be included in machine- executable content.
• the content could be used to enable universal or specific processor or logical circuit programmed with the instructions to perform the operations.
• the operation could be implemented by combination of hardware and software.
• the present invention has been described in context of a computing apparatus, these skilled in the art would realize that such function could be properly implemented by any one of the alternative embodiments.

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• 2008
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