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US 2003/0204355 A1Published application
Process for the serial transmission of digital measurement data
OwnerWalter Mehnert, Thomas Theilinventors
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OwnerWalter Mehnert, Thomas Theilinventors
Estimating the term…
In a serial transmission process for transmitting digital measurement data from a transmitter to a receiver, wherein at the transmitter end at least one absolute value of a continuously measured physical parameter and correction values describing alterations therein are transmitted in digital form to the receiver which forms updated measurement values from the transmitted values, to achieve lower transmission frequencies with a very high level of data incidence at the transmitter end, it is provided that both at the transmitter end and also at the transmitter end, using the mathematical equations which describe the physical laws in respect of alteration of the parameter to be measuringly detected, an exact value (αTxb) is continuously predicted for a respective time (Tx) for which there is not yet a new measured value (αTx) at the receiver end, which exact calculated value represents the updated measurement value at the receiver end, that at the transmitter end upon the occurrence of the measured value (αTx) belonging to the respective time (Tx) being considered, its difference relative to the exact calculated value (αTxb) is formed, and that at least one correction value δαTx) representing such a difference is transmitted to the receiver.
A process for the serial transmission of digital measurement data from a transmitter to a remotely disposed receiver, wherein at the transmitter end at least one absolute value of a continuously measured physical parameter and correction values describing alterations in said parameter are prepared in digital form and transmitted to the receiver which forms updated measurement values from the transmitted values, characterised in that both on the part of the transmitter and also on the part of the receiver, using mathematical equations which describe the physical laws in respect of alterations in the parameter which is to be measuringly detected, an exact value (αTxb) is continuously calculated in advance for a respective time (Tx) for which there is not yet a new measured value (αTx) on the part of the receiver, said calculated exact value (αTxb) representing the updated measurement value at the receiver, that on the part of the transmitter, when the measured value (αTx) belonging to the respective time (Tx) being considered is present, its difference in relation to the exact calculated value (αTxb) is formed, and that at least one correction value (δαTx) representing such a difference is transmitted to the receiver, wherein the calculation of the exact value (αTxb) involves so many known measured values (αTx−1, αTx−2, . . . ), each of which was ascertained for a respective accurately known earlier time (Tx−1, Tx−2, . . . ), that the correction value (δαTx) representing the difference can be encoded with such a small number of bits to be transmitted, that the deviation between the calculated and the measured value always remains within the required level of measurement accuracy.
A process as set forth in one of the preceding claims characterised in that for at least one time which is between a time (Tx) being considered and the next time (Tx+1) which follows at an accurately defined time spacing, an exact value is predicted by interpolation.
A process as set forth in one of the preceding claims characterised in that the physical parameter is the position of a body with respect to its surroundings.
A process as set forth in one of the preceding claims characterised in that at the transmitter end positional and/or alteration values initially ascertained in analog form are digitised prior to transmission.
A process as set forth in one of the preceding claims characterised in that the bits representing the various values are transmitted in interleaved or shared relationship.
A process as set forth in one of the preceding claims characterised in that the bits are transmitted in group-wise manner in interleaved or shared relationship.
Dependencies are inferred from the claim text.