Abstract: A system for transmitting data includes a receiver that receives data at a first data transfer rate. A processor buffers the data into sequential frames of a predetermined length of time and arranges the frames into a byte of data. A transmitter transmits the byte of data a number of times greater than one and equal to a second data transfer rate divided by the first data transfer rate.

Abstract: A data distribution device transfers digitized audio and digital data between memories of processors in a multi-processor communications system on a sample bus without protocols or handshaking between the source and destination processors. The device is capable of dynamic reconfiguration of its distribution pattern when peripherally commanded and has individual control over all memory read, chip select and write lines. Through an indirect register addressing scheme the present system has the ability to read from an address within any single memory and then write to an address within any or all other memories of the processors within the communications system.

Abstract: An early warning system (10) for visually informing the hearing impaired driver (D) of an automotive vehicle (A) of the proximity of an emergency vehicle by detecting a siren being sounded by the emergency vehicle. A microphone unit (12) receives an audible frequency signal transmitted by the siren. This signal is in one of a band of audible frequencies. In addition to the siren, the microphone unit receives other audible frequency signals as well. A signal processor (22) processes all received audible frequency signals. The processor includes an analog-digital converter (30) for converting received signals to a digital signal. The processor further includes a correlator microprocessor (32) for comparing the resulting processed signal to known siren signal characteristics each of which identifies a different type of siren. A light indicator (D1) provides a visible signal to the driver of the proximity of an emergency vehicle and an audible warning is also provided.