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Global printing system and method of using same

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Global printing system and method of using same


A system and method for parsing data formatted in a plurality of encoding schemes at a printer is provided. The method comprises receiving data from at least one host computer at the printer, wherein at least a portion of the data is encoded in a plurality of encoding schemes. The method also includes determining a parser state of the data based on a plurality of characters and/or at least one printer control command associated with the plurality of encoding schemes.
Related Terms: Parser

Browse recent Zih Corp. patents - Hamilton, BM
Inventors: John Fay, Jessica Wettstein, Cabel Sholdt, Fred Susi
USPTO Applicaton #: #20120314235 - Class: 358 111 (USPTO) - 12/13/12 - Class 358 


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The Patent Description & Claims data below is from USPTO Patent Application 20120314235, Global printing system and method of using same.

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CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of and claims priority to co-pending U.S. patent application Ser. No. 13/099,882, filed May 3, 2011, which is a divisional of and claims priority to co-pending U.S. patent application Ser. No. 11/626,670, filed Jan. 24, 2007, which claims priority from U.S. Provisional Patent Application No. 60/761,610 filed Jan. 24, 2006, the contents of both of which are incorporated herein in their entireties by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention is related to a global printing system, and more particularly, to a printer that is capable of effectively and efficiently printing scripts on a label.

2. Description of Related Art

Printers are used in countries around the world. Most of these countries require printing in languages other than English. For example, Europe, the Middle East, India & Southeast Asia, and China, Japan, Korea, and Vietnam (commonly known as “CJKV”) utilize printers that produce labels in their native language or in several languages on a single label. Thus, customers utilize thermal printers for the labels the printer produces, not the actual printer. These labels are made up of human readable text, graphics, and barcodes.

Languages have different ways of displaying the human readable text, each using different scripts. English, for example, uses the Latin script to produce human readable English text. A single script can be used for more than one language, as is the case with the Hanzi script being used to make human readable text for both Mandarin and Cantonese. A single language can also use more than one script. For instance, Japanese uses the Hiragana, Katakana, and Kanji scripts for written Japanese.

In order to print text, graphics, and barcodes, the data to be printed is encoded. Code points are utilized to represent characters, where characters are symbols that represent the smallest component of written language, such as letters and numbers. Glyphs are used to graphically represent the shapes of characters when they are displayed or rendered, while a font is a collection of glyphs. Each character does not necessarily correspond to a specific glyph, as there is not a one-to-one relationship between the two. The encoding is employed to convert code points into byte representation in storage memory. For example, some legacy encoding schemes include: ASCII in the United States; CP 850 in Latin-speaking regions; Shift-JIS in Japan; UHangul, Johab, and Wansung in Korea; and Big 5, GB 2312, and HZ in China/Taiwan.

However, because encoding schemes were insufficient to cover all languages, and many encodings schemes conflicted with one another, Unicode was developed. Unicode achieves uniformity between all languages and provides a set of coded characters that includes almost all characters used worldwide in an attempt to provide a universal standard. The Unicode Standard provides a number value (i.e., code point) and a name for each character, as well as various information such as mapping tables, character property tables, and mappings to character sets, to ensure legible and consistent implementation of data.

Unicode may be represented in UTF-8, UTF-16, and UTF-32 (UTF=Unicode Transformation) encodings but may also be represented by UCS-2 (UCS=Universal Character Set) and UCS-4. Each of the three UTF encoding schemes is capable of representing the full range of Unicode characters and have respective advantages and disadvantages. UTF-32 is the simplest form where each code point is represented by a single 32-bit code unit (i.e., a fixed width character encoding form). UTF-8 is a variable width encoding form that preserves ASCII transparency and uses 8-bit encoding units. UCS-2 is a two byte fixed width encoding scheme that does therefore not include support for “surrogate characters,” which are characters that require more than two bytes to represent.

With respect to UTF-16, code points within a specified range are represented by a single 16-bit unit, while code points in a supplementary plane are represented by pairs of 16-bit units. UTF-16 is not an ASCII transparent encoding scheme. While it does map the characters included in the ASCII character set to the same code points as ASCII, the way it encodes these code points is different. UTF-16 encodes these code points using two bytes. The Most Significant Byte (MSB) is 0x00 while the Least Significant Byte (LSB) is the same as the ASCII value. Often, Unicode scripts will contain a Byte Order Mark (BOM) to denote what the endianness of the file is. However, the Unicode standard does not require that the file contain a BOM. Furthermore, the Unicode standard states that if a system detects Unicode data that is encoded using the UTF-16 encoding scheme and a BOM is not present, endianness is assumed to be big.

Current printers support a variety of ASCII transparent encoding schemes, including both single and multi-byte encodings, but encode the ASCII set of characters using one byte. This makes it possible for printers to simply look at printer control commands as if they were ASCII, which enables a printer control command to be embedded that specifies what the encoding scheme actually is prior to reaching the field data which could include multi-byte characters. However, when utilizing a Unicode encoding scheme, the printer is prevented from blindly looking for printer control commands because not all of the data is ASCII transparent.

Unicode presents other issues with respect to grapheme clusters. In English, the concept of “a character” is very simple; it is a letter which is represented by a single code point. However, in other languages, defining “a character” is a more complex task, as a character is often made up of multiple code points. For example the “à” Small Latin Letter A with Grave can be encoded as both U+00E0 and as the combined U+0061 [Small Latin Letter A] U+0300 [Combining Grave Accent]. The Unicode Standard attempts to define what makes up “a character” through the creation of a grapheme cluster; however, this only handles the issue when the combining marks are of a non-spacing type. If printers use grapheme clusters to determine how to break apart a data string for vertical printing, a glyph could appear by itself on a line, which would render the text virtually unreadable.

Because Unicode provides characters rather than the actual rendering of the characters (i.e., formatting, text placement, glyph selection, glyph style, or glyph size), software is required to properly implement Unicode at a printer. For many languages and countries, a label design application must be used to format labels to be printed. The label design applications download the format to the printer as a graphic, greatly increasing the first label out time. A slow first label out is also caused by the slow memory used to store the large fonts required to support some scripts, such as Japanese or Simplified Chinese. The memory required means an expensive upgrade but is necessary since some fonts, such as Andale, can be as large as 22 MB and do not fit onto the printer\'s available memory. For some languages and encodings, there is improper support or they are not available at all. Additionally, Unicode is not supported in all font technologies, such as TrueType, because the number of defined Unicode points exceeds the capacity of current font technologies.

There are four main regions with languages issues to consider: Europe, the Middle East, India and Southeast Asia, and CJKV. Moreover, many companies are “multinational” and operate in many of the other regions and have both similar and separate language issues from those regions. Multinationals may be located in foreign markets, sell product into foreign markets, and/or manufacture in foreign markets.

In the Middle East, Hebrew and Arabic are the two most common languages. Hebrew is the official language of Israel. Arabic is the official language of Egypt, UAE, Iraq, Kuwait, and many other Middle East countries. The Arabic alphabet is also used to write non-Arabic languages. The Malay language, an official language of Singapore, Malaysia, and Brunei, uses the Arabic characters. Other languages that use the Arabic characters are Persian (Iran, Afghanistan, and Uzbekistan) and Urdu (Pakistan). Hebrew and Arabic differ from most other languages because they are read and written from right to left. Another issue with Arabic is that characters are displayed cursively. While English has an optional cursive style of writing, Arabic is always written cursively. The Arabic characters change shape depending on the characters around them, which is known as contextual shaping. Twenty two of the 28 characters have up to 4 different glyphs depending on if the character is at the beginning, middle, or end of a word. There is also a form for when the character is isolated. A single Unicode code point is given to each character, even though the code point can have several forms. The remaining 6 characters do not change shape. An interesting issue with writing right to left is that numerals are still written from left to right, which is a common occurrence in part numbers or addresses. This is the reason for the name bi-directional text, since the text can switch from left to right and right to left in the same sentence.

The India and Southeast Asia region consists of countries such as Thailand, India, Sri Lanka, Philippines, and Bangladesh. These countries use scripts such as That, Devanagari, Telugu, Bengali, and Sinhala. These scripts are less complex than the Middle East languages because they are written from left to right. The issue with Indic and Southeast Asian languages is that they have combining characters, and languages that use the Devanagari and similar scripts have connecting headstrokes. A headstroke is a horizontal line that runs across the top of each character. The character stems off from the headstroke. The characters combine and can change order depending on the characters around them, mostly with dependent vowels. Similar to Arabic, even though a character can have several forms, it is only assigned one Unicode code point.

The remaining Asian languages not covered by the other regions are Japanese, Korean, Simplified Chinese, Traditional Chinese, and Vietnamese, commonly known as CJKV. These languages are used in China, Taiwan, Hong Kong, Singapore, Vietnam, Korea, and Japan. The main issue with these languages is the vast amount of characters used to write each of these languages. Although only around 2000-3000 characters are required for basic literacy in Japanese or Chinese, there are upwards of 80000 characters listed in some dictionaries. Most of these characters are rarely used in everyday writings, but are commonly used in proper names. In most of these languages, a character will have the same meaning in all the languages, but may have a slightly different glyph. Another issue with CJKV languages is multiple scripts being used. For example, a Japanese sentence can use up to four different scripts. Vietnamese also presents another problem with writing using Latin characters. Vietnamese words must have a tone mark, which is a diacritical mark combined with a base character. Many of these characters do not have a presentation form and must be rendered with a font engine. Vietnamese also presents a problem in that it requires more vertical space to be displayed properly. When you stack these components the vertical space increases.

Conventional printers provide the ability to print horizontal blocks of text and simple single vertical columns of text. While this is sufficient for many languages of the world, it is not sufficient for the Japanese language. This language can be written either horizontally or vertically. Also, when a combination of Japanese and Latin text is combined in the same block, there are a variety of possibilities of how this would appear, as shown below.

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stats Patent Info
Application #
US 20120314235 A1
Publish Date
12/13/2012
Document #
13477653
File Date
05/22/2012
USPTO Class
358/111
Other USPTO Classes
International Class
06K15/02
Drawings
9


Parser


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