Patent ID: 7697891

Claim:
A baby monitor system comprising: a child unit having a child transducer that receives and converts incoming audio signals to an incoming analog signal, an analog-to-digital converter that converts the incoming analog signal to a digital representation of the incoming audio signals, a child microprocessor that generates a data stream from the digital representation, and a transmitter that transmits a wireless signal representative of the data stream on a selected channel of a plurality of channels; and a parent unit having a receiver that receives the wireless signal and converts the wireless signal to incoming digital data, a parent microprocessor that processes the incoming digital data, a digital-to-analog converter that converts the processed incoming digital data to outgoing analog information, and a parent transducer that converts the outgoing analog information into outgoing audio signals representative of the incoming audio signals; wherein the parent microprocessor is configured to tune the receiver in accordance with a channel selection scan for the selected channel, the channel selection scan comprising an attempt by the parent microprocessor to detect valid data on a particular channel of the plurality of channels using an identification code stored on both the child unit and the parent unit but not included in the data stream.