Title :
Design for embedded chinese display smart card
Author :
Zhou, Hua ; Yang Liu ; Kolev, Dimitar Antonov ; Chen, Jingjing ; Lai, Zonghe ; Liu, Yang
Author_Institution :
Key State Lab. for New Displays & Syst. Application, Shanghai Univ.
Abstract :
The storage and display of Chinese character data and the battery life are two bottle-necks of a Chinese display smart card which is one kind of super smart cards. This paper presented a new idea to realize the Chinese display which was a practice of embedded font solution. A die-form regular MCU, a smart card MCU and a graphical LCD controller (LCD driver) provided the main functions of the system to show Chinese characters on a graphical LCD panel, to receive operations from users and to run monitor program or, moreover, COS (card operating system). 2-wire serial interface (TWI) was selected to be the communication protocol between the main MCU and the LCD controller in order to reduce the connection numbers and to enhance reliability. To minimize power consumption is one main design target for extending battery life. Besides selecting components with low power consumption, a power control scheme was designed to meet this requirement. A functional demonstrator was assembled in order to check the system design and to do the debug work
Keywords :
embedded systems; liquid crystal displays; operating systems (computers); protocols; smart cards; 2-wire serial interface; Chinese character data; LCD driver; battery life; card operating system; communication protocol; embedded Chinese display smart card; graphical LCD controller; Batteries; Communication system control; Control systems; Energy consumption; Liquid crystal displays; Monitoring; Operating systems; Power system reliability; Protocols; Smart cards;
Conference_Titel :
High Density Microsystem Design and Packaging and Component Failure Analysis, 2006. HDP'06. Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0488-6
DOI :
10.1109/HDP.2006.1707584
