US 4,727,539 A · Multi-element information transmission system

Abstract

A plurality of slave stations receive a plurality of apparatus information signals concerning apparatus to be controlled (or sensors), and a master station allots the apparatus information signals to time slots in a transmission path and receives a specified apparatus information signal with priority from the respective slave stations. A priority change information signal adder in the master station adds a priority change information signal for changing priority of the information signals transmitted from each slave station to an information transmission signal string containing a sync signal and various information signals transmitted to each slave station. A multi-element information signal separator/processor in the master station separates and processes the multi-element information signals transmitted from each slave station, on the basis of the priority change information signal. A detector/counter in each slave station detects the sync signal transmitted from the master station and counts the number of time slots following the sync signal. A transmission pattern reconstructor in the slave station reconstructs transmission patterns of the respective slave stations in accordance with the priority change information signal when a count value coincides with a predetermined value.

Claims9

Dependent claims

A multi-element information transmission system comprising:

a plurality of slave stations supplied with a plurality of apparatus information signals concerning apparatus to be controlled and/or apparatus to be monitored;
and
a master station for transmitting to and receiving from each of said slave stations other information signals and said apparatus information signals;
said master station being operable to transmit to the respective slave stations a priority change information signal which instructs each slave station to transmit a specified apparatus information signal with priority, said respective slave stations being operative to reconstruct information transmission patterns based on said priority change information signal and transmit said apparatus information signals in accordance with said reconstructed information transmission patterns.

1 more element

A multi-element information transmission system comprising:

a plurality of slave stations operatively inputted with a plurality of apparatus information signals concerning apparatus to be controlled and/or apparatus to be monitored;
and
a master station for allotting said apparatus information signals to selected time slots in a transmission path, said time slots being selected such that a specific one of said apparatus information signals can be received by said master station preferentially to the other apparatus information signals;
said master station including:
means for adding a priority change information signal for changing priority of the information signals transmitted from each slave station to said master station so as to specify any one of said apparatus information signals to be received by said master station preferentially to the other apparatus information signals to an information transmission signal string to be transmitted to each slave station, said signal string containing a sync signal alloted to a time slot for synchronization of information transmission between said master station and said respective slave station and various information signals inclusive of said apparatus information signals to be transmitted from each slave station to said master station which are allotted to other time slots;
and
means for separating and processing the information signals transmitted from each slave station, on the basis of said priority change information signal,
said respective slave stations including:
means for detecting the sync signal contained in the information transmission signal string transmitted from said master station and counting the number of time slots following the time slot alloted with the sync signal;
and
means for reconstructing transmission patterns of the respective slave stations in accordance with said priority change information signal when a count value from said detecting and counting means coincides with a value of a switching command designated by said priority change information signal.

8 more elements

Dependencies are inferred from the claim text.

Multi-element information transmission system

Life of this patent

Multi-element information transmission system

Life of this patent

Abstract

Claims9