The present invention relates to a chip card (1) providing a trusted absolute time reference independently from its position, to a terminal (2) with such a chip card (1) and to a method to operate such a chip card (1). The chip card (1) is suitable to be i...

When a highly accurate clock is controlled via a GPS radio wave received through a GPS antenna (10), the highly accurate clock is always generated by locking a phase locked loop (PLL) circuit within a hold-over section of a clock control section in a power...