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8 results about "Smart card" patented technology

A smart card, chip card, or integrated circuit card (ICC) is a physical electronic authorization device, used to control access to a resource. It is typically a plastic credit card sized card with an embedded integrated circuit. Many smart cards include a pattern of metal contacts to electrically connect to the internal chip. Others are contactless, and some are both. Smart cards can provide personal identification, authentication, data storage, and application processing. Applications include identification, financial, mobile phones (SIM), public transit, computer security, schools, and healthcare. Smart cards may provide strong security authentication for single sign-on (SSO) within organizations. Several nations have deployed smart cards throughout their populations.

Embedded smart card and manufacturing method thereof

InactiveCN101882232AAvoid discarding defectsReduce maintenance costsRecord carriers used with machinesHot stampingEngineering
The invention provides an embedded smart card. The embedded smart card comprises a card substrate of any shape and an antenna circuit module, wherein the antenna circuit module is arranged on the card substrate; an embedding hole used for arranging the antenna circuit module is reserved on the card substrate; and the shape of the embedding hole is matched with the outer contour of the antenna circuit module. The antenna circuit module is an insulator, is fixedly arranged in the embedding hole and is detachably connected with the card substrate. The invention also provides a manufacturing method for the embedded smart card, which comprises the following steps of: selecting the ordinary card-shaped card substrate made of a special material according to the occasion at which the card is used and the application of the card; correspondingly reserving a circular embedding hole matched with the card substrate on the card substrate according to the size and the shape of the antenna circuit module; aligning and positioning the antenna circuit module and the embedding hole on the card substrate; curing the antenna circuit module in the embedding hole reserved on the card substrate by a method of high-frequency welding or hot stamping; and performing function expansion and beautification on the card substrate and the antenna circuit module.
Owner:上海卡美循环技术有限公司

Low-energy-consumption small-area data processing method and data processing device thereof

InactiveCN103888246AReduce the number of cyclesReduce power consumptionEncryption apparatus with shift registers/memoriesTemporary variableControl signal
The invention relates to the technical field of information safety, in particular to a low-energy-consumption small-area data processing method and a data processing device of the method. The low-energy-consumption small-area data processing method comprises the steps that large integers, the word length s of the large integers and constants are respectively stored; a control module receives external control commands, the external control commands are forwarded to a finite state machine module to be processed, then control signals are output, and Montgomery modular multiplication is carried out through an arithmetic logic module according to the control signals; HW=HW+d, X (s-1)=HW (omega-1:0) and HW=HW>=omega are calculated in each circulation of the Montgomery modular multiplication so that HW can be updated; multiply-add operation (d, ei)=a*bi+ci+d in the Montgomery modular multiplication is calculated through the arithmetic logic module; the operation result is stored. Due to the fact that omega+1 temporary variables HW are introduced in to reduce the circulation frequency in the process of achieving a Montgomery modular multiplication algorithm, the number of clock periods is reduced, energy consumption is lowered, and the method and device are very suitable for application of an intelligent card.
Owner:CHINA VISION MICROELECTRONICS
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