Abstract: A power consumption management system for a central processing unit may include a power consumption estimation block and an activity control block. The power consumption estimation block may be configured to estimate power consumption of the central processing unit based on information related to a status of the central processing unit. The activity control block may be configured to use the estimated power consumption to determine a control to be applied to the central processing unit for regulating a rate of change in power consumption of the central processing unit.

Abstract: A power consumption management system for a central processing unit may include a power consumption estimation block and an activity control block. The power consumption estimation block may be configured to estimate power consumption of the central processing unit based on information related to a status of the central processing unit. The activity control block may be configured to use the estimated power consumption to determine a control to be applied to the central processing unit for regulating a rate of change in power consumption of the central processing unit.

Abstract: A compact and fast coder-decoder of the Reed-Solomon type and a reader, which comprises such a coder-decoder. The present invention provides a coder-decoder that includes specific registers that are divided into elementary cells set in series and comprising means of multiplexing and of calculation such that during a cycle of a clock signal the data of two of the registers are shifted from one cell and a calculation operation is carried out for one of the data and it is subsequently possible to exchange simultaneously the data between the two registers.

Abstract: A Reed-Solomon type error correction device carries out correction passes, and includes a first memory containing DVD type data, as well as CD type data after a first correction pass, for deinterleaving of the CD type data before a second correction pass. Additionally, a second memory of smaller capacity than the first memory, is provided for containing CD type data before correction, as well as deinterleaved CD type data. The invention concerns the error correction device and an optical disk reader containing such a device.