Matsushita Electric Works, Ltd.

Osamu Akiba

Takashi Saeki

Motoharu Terada

Yoshiharu Suzuki

Isao Shimada

In a time-division multiplex transmission system, a host machine (3) and a plurality of addressable terminals (51 to 56) are connected together by way of a signal line (6). The same address (A) is assigned to a group of the terminals (51 to 54) so that the group of terminals (51 to 54) may be placed under control at the same time upon receipt of a transmission signal (SS) from the host machine (3). Reply signals (RS1 to RS4) from the respective terminals (51 to 54) are adjusted so that they are sent back at different points in time. This enables the host machine (3) to determine which of the terminals sent back the reply signal (RS1 to RS4).

Time-division multiplex transmission system

A time division multiplex remote control system controls data transmission between a central controller and a plurality of addressable remote terminals coupled to the central controller through a signal line. The central controller transmits to each of terminals a transmission signal comprising address data addressing a terminal, control data, a reply signal standing-by period defining signal for defining a period for receiving a reply signal from the corresponding terminal, an interruption request signal standing-by period defining signal for defining a period for receiving an interruption request signal from the terminal. Each terminal receives the transmission signal and, when the received address data coincides with an address of the terminal, accepts the control data and sends a reply signal during a reply signal standing-by period. Each terminal further detects a change of a supervisory input which the terminal supervises and sends an interruption request signal at the timing of the interruption request signal standing-by period of the transmission signal.

Interruption handling system in time division multiplex remote control

A time division multiplex transmission system including a central unit and a plurality of terminal units connected through a single pair of bus lines to the central unit. The central unit transmits at least a set of address and control signals sequentially to the respective terminal units and also an electric power required for operating and controlling the respective terminal units at least accompanying the address and control signals. The respective terminal units include a condenser for accumulating the electric power from the central unit so that each terminal unit corresponding to each address signal from the central unit performs any desired operation with the accumulated power and transmits a response signal depending on a result of the operation to the central unit responsive to the control signal.

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Neyagawa, Japan

Osamu Akiba