Patelhold Patentverwertungs & Elektro-holding Ag

Patelhold Patentverwertungs- & Electro-holding Ag

Gerhard Funk

A data exchange system includes a plurality of data processing partners which communicate with each other via a common bus. Access to communication is sequentially transferred from one partner to another by the generation of an access-passing-on message which is transmitted via the common data bus. The access-passing-on message includes a source address identifying the address of the baton passing or token passing partner and a destination address identifying the address of that partner which is next to receive access to communication. If, after receiving access to communication, a partner has data available for transmission, it transmits a data information message including an address block identifying the type of information being transmitted and at least one data information block containing the data being transmitted. Each partner which receives the so transmitted data information message error-free transmits an acknowledgment message which identifies its own address and indicates that it has received an error-free transmission of the data information message.

Common bus access system using plural configuration tables for failure

An apparatus and method for monitoring the received pulses of a transmitted pulse code modulation signal to determine if the received pulses lie within a predetermined pulse distortion tolerance zone is disclosed. The received pulses are monitored to determine the number of received pulse edges which are received during first and second consecutive predetermined time zones, the total period of the time zones being equal to the period of the pulse pattern of the received message which would occur in the case of distortionless transmission. The first time zone extends around the position where the pulse edge of the received pulses would be in the case of distortionless transmission. An error recognition signal is generated when either more than one of the received pulse edges arrives during the first time zone or only one of the received pulse edges arrives during the second time zone.

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Ennetbaden, Switzerland

Gerhard Funk