Download PDF by Hiroko Kato: Barcodes for Mobile Devices

By Hiroko Kato

ISBN-10: 0521888395

ISBN-13: 9780521888394

From stock administration in shops to automobile half monitoring in meeting crops, barcodes are essentially the most accepted automated id and knowledge trap applied sciences. This e-book presents an entire creation to barcodes for cellular units, proposing the main proper and up to date info formerly unavailable in other places or tricky to acquire. the point of interest all through is on contemporary advancements and two-dimensional (2D) barcodes, together with the learn and improvement steps in the direction of color barcodes for cellular units, assisting readers to increase their very own barcodes. The authors additionally supply layout information for his or her personal novel color second barcode: the cellular MultiColour Composite (MMCC) barcode, plus insurance of RFID expertise and one-dimensional barcodes. This e-book is perfect for pro builders of barcodes for cellular units who desire the most recent technical info and knowledge on find out how to enhance barcodes. it's also an invaluable reference for graduate scholars getting to know the sector of barcode know-how and cellular computing.

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E. 124 codewords), used for encoding all the other data. MaxiCode uses the Reed–Solomon error detection and correction technique, providing two levels of error correction: standard error correction (SEC) and enhanced error correction (EEC). The SEC level provides 15% error correction capability for misread data and 30% for data that could not be read. The EEC level can achieve 21% and 42% error correction capability for misread data and data that could not be read, respectively. 2 shows the numbers of data, error correction and correctable codewords for SEC and EEC.

Column versions 3 and 4 have an additional row address pattern in the centre of the symbol. The basic unit of MicroPDF417 is again the codeword. The codeword structure of MicroPDF417 is the same as that of PDF417. A codeword is made up of four bars and four spaces with varying widths to make a total of 17 modules as before. Again it starts with a bar and ends with a space. 20 presents the code structure of MicroPDF417. Data are encoded in a MicroPDF417 symbol in the same way as in PDF417 symbols.

MaxiCode was 36 Barcode technology evolution Quiet zone Black cell White cell Bull’s-eye finder pattern and orientation pattern Primary message module Secondary message module Fig. 21 Structure of MaxiCode. approved as an ISO standard (ISO/IEC 16023) in 2000. It was also adopted as a twodimensional symbol for the shipping, transport and receiving of labels (ISO 51394). 21. One of the most distinctive features of MaxiCode is its unique circular finder pattern made up of three concentric rings called a bull’s eye.

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Barcodes for Mobile Devices by Hiroko Kato

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