Method for remote control message transmission delay compensation by providing pseudo-response message based on prior received responses stored in look-up table
First Claim
1. A method for use in a system comprising a remote controlling unit and a controlled unit controlled by said controlling unit,the controlling unit sending control-unit messages (commands and/or requests) to the controlled unit and the controlled unit responding to these control-unit messages by sending response messages (acknowledgements and/or information words) back to the controlling unit, and the controlling unit requiring the response messages back within a certain maximum acceptable delay time, wherein the transmission of messages from the controlling unit to the controlled unit and back comprises a total delay exceeding said maximum acceptable delay time and the method comprising storing and updating of a response table close to the controlling unit comprising control-unit messages previously sent from the controlling unit to the controlled unit and corresponding response messages previously received from the controlled unit in response to these control-unit messages and using this response table as a look-up table for generating a pseudo-response message to each control-unit message within the maximum acceptable delay time accepted by the controlling unit, which pseudo-response message is the most recently received response message to the corresponding control-unit message.
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Accused Products
Abstract
Hereby is achieved a remote-control system which will allow any delay time in the transmission between the controlling unit and the controlled unit. The communication protocol is retained, the actual response is subjected to the delay in the transmission system, but the pseudo-response message is generated in advanced to satisfy the needs of the controlling unit. A typical area of use for the system is professional audio and video production.
40 Citations
8 Claims
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1. A method for use in a system comprising a remote controlling unit and a controlled unit controlled by said controlling unit,
the controlling unit sending control-unit messages (commands and/or requests) to the controlled unit and the controlled unit responding to these control-unit messages by sending response messages (acknowledgements and/or information words) back to the controlling unit, and the controlling unit requiring the response messages back within a certain maximum acceptable delay time, wherein the transmission of messages from the controlling unit to the controlled unit and back comprises a total delay exceeding said maximum acceptable delay time and the method comprising storing and updating of a response table close to the controlling unit comprising control-unit messages previously sent from the controlling unit to the controlled unit and corresponding response messages previously received from the controlled unit in response to these control-unit messages and using this response table as a look-up table for generating a pseudo-response message to each control-unit message within the maximum acceptable delay time accepted by the controlling unit, which pseudo-response message is the most recently received response message to the corresponding control-unit message.
Specification