Nordic Semiconductor Asa

Vemund Kval Bakken

Rolf Ambühl

Meng Cai

Fredrik Jakobsen Fagerheim

Fredrik Jacobsen Fagerheim

A digital microprocessor device () has: a central processing unit; a memory (); and an output signal module (). The output signal module comprises: a counter () arranged to count to a predetermined count value; and at least one comparator () arranged to change an output signal () from a first output state to a second output state when the counter reaches a predetermined comparator value. The output signal module is arranged to load automatically from the memory at least one parameter selected from the group comprising: the predetermined count value, the predetermined comparator value and the first output state or the second output state, without receipt of an instruction from the central processing unit.

Waveform generation

A radio receiver is arranged to receive radio signals. The radio receiver includes a tuner, which outputs an electronic signal representing radio waves received by the radio receiver; a correlator, which cross-correlates a predetermined signal pattern with the electronic signal, and outputs a correlation signal; and a clear channel assessment module. The clear channel assessment module determines when the number of peaks in the correlation signal, over a fixed time window, exceeds a threshold count value, and outputs a busy signal in response to determining that the number of peaks exceeds the threshold count value.

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Trondheim, Norway

Vemund Kval Bakken