摘要
手持终端设备属于一种嵌入式系统,在使用一些特殊功能时由于工作时长,电池容量不够,需要一边工作还能一边充电。目前在用的发卡(SIM卡)终端就是这么一个设备,在长时写卡发行的同时要求设备持续供电。由于目前写卡模块都是采用OTG模式,即手持终端处于host模式,不能作为slave模式充电。本文设计就是解决既能写卡的同时还能给手持终端充电。已经应用到实际产品中,取得了良好的效果。
Handheld terminal device belongs to an embedded system. When using some special functions, due to long time working and insufficient battery capacity, it can be charged while working. The SIM card issuing terminal currently in use is such a device. It requires continuous power supply while issuing cards for a long time. At present, the card writing module adopts the OTG mode, that is, the handheld terminal is in the host mode and cannot be charged as the slave mode. The design of this paper is to solve the problem of not only writing the card, but also charging the handheld terminal. It has been applied to practical products and achieved good results.
出处
《现代传输》
2023年第1期42-44,共3页
Modern Transmission
关键词
发卡
充电
同时
card issuing
charging
synchronization