439 results about "Character encoding" patented technology

A parse/build engine that can handle multi-format financial messages. The engine converts the different format messages into a common format, and the common format message is then processed by the business service application. A parser examines the message and determines an appropriate schema for the particular format of message received. The schema is a data structure in a schema registry that includes a grammar structure for the received format as well as pointers to handlers for converting the different fields of the message into the internal message format using the grammar structure (the “grammar” can include field sequence, field type, length, character encoding, optional and required fields, etc.). The handlers are individually compiled. As formats change, new formats or changes to old formats can be dynamically added to the parse/build engine by loading new schema and handlers.

Method to prevent the effect of web application injection attacks, such as SQL injection and cross-site scripting (XSS), which are major threats to the security of the Internet. Method using complementary character coding, a new approach to character level dynamic tainting, which allows efficient and precise taint propagation across the boundaries of server components, and also between servers and clients over HTTP. In this approach, each character has two encodings, which can be used to distinguish trusted and untrusted data. Small modifications to the lexical analyzers in components such as the application code interpreter, the database management system, and (optionally) the web browser allow them to become complement aware components, capable of using this alternative character coding scheme to enforce security policies aimed at preventing injection attacks, while continuing to function normally in other respects. This approach overcomes some weaknesses of previous dynamic tainting approaches by offering a precise protection against persistent cross-site scripting attacks, as taint information is maintained when data is passed to a database and later retrieved by the application program. The technique is effective on a group of vulnerable benchmarks and has low overhead.

A mobile station embodiment (400) is provided with a reflection detector (401) which may provide supplemental inputs along with keys (402) such that a character encoding, such as, e.g. ASCII, is selected on the basis of the reflection detector (401) alone, or in combination with keys (402) either pushed down or released. A movable target or pendulum (405) may provide an ability to sense the near space along a direction that the reflection detector is sensitive to. Signals may be transmitted from the reflection detector (401) and pass across a void or other great distance before being reflected, if at all. If such signals are reflected toward the reflection detector (401), and the signals have not been overly attenuated, the reflection detector (401) may provide a ‘reflect’ signal to any on-board processor of the mobile station (400). The pendulum (405) may be influenced by wind, gravity or acceleration (405) to operate as a reflector to cooperate with the reflection detector (401) and generate a ‘reflect’ signal.

A data transformation and exchange server receives an input data stream from one or more application servers and/or computing devices. The data stream includes a plurality of input records and each input record can be in a different input protocol and/or character encoding. The transformation and exchange server determines each input record in the input data stream based on one or more boundary points and determines a template from a plurality of templates based on the input record. The transformation and exchange server transforms the input record into an output record based on the template and communicates the output record via an output data stream.

The invention discloses an information hiding method taking text information as a carrier, which is used for providing a hiding channel to secret information in the process of data transmission. The method comprises the following steps: self-defining a reserved code set according to a character coding standard characteristic; self-defining an L scale code according to a base number L of the reserved code set; self-defining a bijective function f of the L scale code to the reserved code set and a reverse function f<-1> thereof; self-defining a method of embedding reserved code character stringsin text information; embedding the secret information to a carrier of the text information and obtaining a secret object; and extracting the secret information from the secret object. The informationhiding technology takes the text information as the carrier and has strong versatility, large hiding capacity, good transparence and strong safety.

A system may include (a) at least one key map variant which has a plurality of key values associated with corresponding keystrokes; (b) a character encoding chart which has a plurality of code values associated with corresponding characters of the character encoding chart; (c) an input data reader which receives input data. The input data contains at least one of the code values associated with at least one corresponding character of the character encoding chart. The system may also include (d) a translation table which translates the at least one of the code values of the input data into at least one of the key values associated with at least one corresponding keystroke.

The invention discloses a screen video encoding and decoding method based on progressive character block compression and an encoding and decoding device thereof. The screen video encoding and decoding method comprises the following steps: obtaining a frame in a screen video, and dividing the frame into M*N macro blocks; dividing each macro block into character blocks or image blocks according to the category; dividing each character block into a plurality of character compression code streams according to a main color and a non-main color; encoding the main color by an index table, and progressively encoding escape colors of the non-main color based on a bit plane; dividing each image block into a plurality of image encoding quality layers by using a progressive image encoding algorithm based on wavelet transform; transmitting the code streams to a receiving terminal according to different quality grades; and decoding and displaying the code stream of each quality layer by the receiving terminal. According to the screen video encoding and decoding method disclosed by the invention, in view of the limitation and defects of traditional character encoders, the progressive character encoding technology of a plurality of quality layers is realized, no support of special equipment is needed, and the screen video encoding and decoding method is applicable to all occasions needing to compress screen images containing characters.

The invention discloses a text content digital watermark encryption and protection method and device. The method comprises S1, eliminating posterior repeated characters in an original text to generatean array A composed of characters without repetition, wherein the serial number of every character in the array A is in order of appearance in the original text; S2, converting the characters in thearray A one by one into character codes A (n), and encrypting the character codes A (n) one by one to acquire encrypted new character codes B (n); S3, converting the new character codes B (n) into acquire character codes C (n), mapping the characters in the array A with the character codes C (n) so that the character codes C (n) are displayed as the font of the characters in the array A. Accordingto the text content digital watermark encryption and protection method, by encrypting and coding the character codes of original codes again and enabling the encrypted character codes to carry watermark information, the display effects can avoid being affected, text content can be encrypted and carry the unforgeable watermark information, so that the aim of original data protection of content ofcopyright can be achieved.

The invention discloses a Chinese word segmentation algorithm based on reverse maximum matching, which comprises the following steps: initializing three objects in a memory; inputting the contents of a text which needs word segmentation; splitting characters in the text into different types according to character codes; directly adding characters which are not Chinese characters to word segmentation results according to the character codes after the text is segmented into short sentences; splitting the short sentences into character sets according to a character string matching and decision-making mechanism; matching the character sets with character sets in a word segmentation dictionary based on the reverse maximum matching algorithm; storing matched character sets into a word segmentation result set; combining consecutive unmatched characters; and adding the consecutive unmatched characters to the word segmentation results to complete word segmentation. A quick word segmentation algorithm based on dictionaries is provided, and the dictionary loading efficiency and the word segmentation efficiency are greatly improved while word segmentation accuracy is ensured.

The invention provides a method and device for displaying fonts in a terminal device. The method includes the steps of obtaining character codes of to-be-displayed characters in the terminal device; obtaining vector diagram information of the fonts corresponding to the obtained character codes from a font resource library of a server, wherein the font resource library is used for storing the character codes and the vector diagram information of the fonts corresponding to the character codes; drawing the obtained vector diagram information of the fonts in a page of the terminal device to display the fonts of the to-be-displayed characters. By means of the method and device, the problem that the system fonts do not support page displaying in the terminal device can be effectively solved, and the displaying efficiency of the non-system fonts in the terminal device can be further improved.

The invention provides a method for extracting data of a webpage table. The method comprises the following steps: 10, reading a webpage source code, analyzing the webpage source code into a Document object of W3C (World Wide Web Consortium) and acquiring any two keywords in the webpage table; 20, performing depth-first traversal on all nodes in the Document object and acquiring two nodes to whichthe two keywords belong respectively; 30, acquiring a common father node with unique attribute of the two nodes, and acquiring the positioning condition of the webpage table by utilizing the unique attribute; and 40, filtering the webpage source code by utilizing the data positioning condition of the webpage table, and extracting a webpage table with the same effect as webpage display. In the method, according to the any two keywords to be extracted in the webpage table and the required table row/column values, the table with the same effect as the original webpage display can be accurately and quickly extracted from the webpage which changes in real time, data of designated rows/columns is acquired, and the flexibility and accuracy of data extraction are improved.

Provided are a method, system and program for translating a source character string in a first character encoding into a target character string in a second character encoding. A plurality of specifications are maintained. Each specification has one of a plurality of scopes identifying at least one code page providing a mapping for source character strings in the first character encoding. The scopes specify different portions of the program to which the code page identified by the specification applies. The source character string for which translation is requested in the program is processed and a determination is made of one specification having one scope that is applicable to the processed source character string. The code page identified by the determined specification is used to translate the processed source character string in the first character encoding into the target character string in the second character encoding.

The invention includes steps: appointing adoption of UTF coding for carrying out transmission for input/output characters at input end and display end of short message; building mapping relation needed by conversion between character codes; based on built mapping relation to carry out conversion between UTF codes and 7 bit codes or UCS codes. The invention also discloses network devices of possessing function of sending and receiving short message. Holding and maintaining conversion relation for two kinds of codes, the invention can support languages for each country. Features are: small storage space needed, saving fabricating cost and cost for late maintenance.

The invention relates to a webpage text extraction method based on the maximum text density. The method includes the following steps of (1) preprocessing a webpage, processing character codes and standardizing the webpage, (2) analyzing the webpage into a DOM tree and extracting tag text blocks in the webpage according to specific tags, (3) calculating the maximum text density, and (4) extracting texts, carrying out sequencing according to calculated text densities after all the tag text blocks are processed, and selecting a tag with the maximum text density, wherein the tag and content of a nested sub-tag serve as a text block and the text is obtained after the tag is eliminated. The webpage text extraction method based on the maximum text density is low in algorithm complexity, has universality and has a good effect on webpages with complex structures.

The invention discloses a character conversion device of a mobile communication terminal, and comprises a data recognition unit which judges whether the code of a received first character exists in a local character base; a character code corresponding table which records the code of the first character and the code of a corresponding second character in the local character base; and a character conversion unit which converts the received first character into the corresponding second character in the local character base according to the character code corresponding table. Besides, the invention discloses a character conversion method of the mobile communication terminal, which first judges whether the code of the received first character exists in the local character base, and searches the code of the second character in the local character base which is corresponding to the first character according to the set character code corresponding table, if not. The invention reduces the occupation of memory space by the character base resource, has a small calculating amount, is suitable for mobile terminal devices limited by resources and cost and can realize the compatibility of characters with only a set of character base in the mobile terminal device.

An optically readable two dimensional symbology employed to encode a string of characters belonging to a source string alphabet. The two dimensional symbol can comprise an ordered plurality of printable elements. The printable elements can be arranged in a rectangular array. The printable elements can be positioned on a grid diagonal to the longitudinal axis of the rectangular array, and sequenced according to a pre-defined pattern. Each character of the character string can be encoded into a sequence of printable elements using an encoding scheme comprising at least one code set. A code set can include a plurality of bit sequences. Each bit sequence can correspond to a group of one or more characters of the source string alphabet. Each bit sequence can comprise one or more binary digits. The first binary digit can be encoded by a printable element printed in a printable element position, and a second binary digit can be encoded by a vacant printable element position.

The invention provides a text information hiding method, which includes: acquiring an original font file used by to-be-hidden text information, generating a new font file by rectifying mapping relation between font index and character codes in the original font file; rectifying the text information according to the new font file, writing the rectified text information into an electronic document; acquiring font description data of characters in the text information from the new font file when the electronic document is opened, and displaying the text information according to the acquired description data. Correspondingly, the invention further provides a text information hiding device, character codes of the text information cannot be changed and any encryption method is omitted, effect of hiding the text information can be realized simply, and safety, hiding performance and robustness are high.