Programmable telemetry word selector

Claim 2

A word selector for use with a telemetry system which provides a digital data signal periodically representing successive data words from a plurality of data sources, a digital tag signal indicating the one of said sources corresponding to the one of said data words currently represented by the data signal, and a request signal occurring when there is a valid data signal and a valid tag signal corresponding thereto; which accepts a predetermined number of analog signals individually representing data from the same number of predetermined sources of said plurality thereof; and which utilizes a plurality of predetermined conversions between the value of said data signal and the values of said analog signals with each of said sources utilizing a predetermined one of said conversions, the word selector comprising: first latch means for retaining the value of the data signal when the request signal occurs; second latch means for retaining the value of the tag signal when the request signal occurs; digital scanning memory means, which has a number of storage locations corresponding individually to said analog signals and addressable by digital address values corresponding individually thereto, for storing in and for outputting from each of said locations a tag signal value, which identifies the one of said sources associated with the analog signal corresponding to the location, together with a conversion code identifying the one of said conversions utilized with said one of said sources; addressing means, which addresses said memory means, for generating said digital address values sequentially when the request signal occurs; comparator means, which receives the value of said tag signal retained in the second latch means and which receives from said memory means the tag signal value in the one of said storage locations currently addressed by said addressing means, for comparing said values received by the comparator means and for providing a tag found signal when said values are equal; digital data converter means, which receives the data signal value from the first latch means and which receives the conversion code stored is in the one of said storage locations addressed by the addressing means when the tag found signal occurs, for performing on said data signal value the one of said conversions indicated by said code and for supplying a resulting converted digital value; and digital-to-analog converter means for converting said converted digital value into the one of said analog signals corresponding to the one of said storage locations addressed by the addressing means when the tag found signal occurred as a result of equality with the tag signal value stored in said one of said locations.

Claim 3

The word selector of claim 1 wherein the telemetry system is for use with a plurality of test projects differing in that said analog signals represent different predetermined sources of said plurality thereof and wherein the word selector further comprises: project storage memory means for storing and for outputting for such test projects individually corresponding sets of tag signal values and conversion codes which, when stored in said scanning memory means, associate said analog signals with said predetermined sources; and project control means for selecting a predetermined one of said sets in the project storage memory and for transferring said one set to the scanning memory means.

Claim 4

The word selector of claim 2 wherein the project control means is adapted, in response to signals initiated exteriorly of the selector, to generate such sets and to transfer the generated sets to the project storage memory.

Claim 5

The word selector of claim 1 wherein said predetermined conversions include shifting said digital data signal within a predetermined range of digits, wherein the number of digits said signal is to be shifted within said range is specified by a shift count which is a portion of the conversion code stored in each location of the scanning memory means, and wherein the digital data converter means comprises: a shift counter which receives said conversion code portion from the scanning memory means when the tag found signal occurs; a shift register which receives the data signal value from the first latch when the tag found signal occurs; and means for successively counting said counter one count while shifting said register one digit until the counter attains a predetermined value which terminates such shifting.

Claim 6

The word selector of claim 1 wherein said predetermined conversions include arithmetic conversions from a number of original arithmetic formats of said digital data signal to a common digital arithmetic format, wherein said original format for each of of said arithmetic conversions is specified by a portion of the conversion code stored in each location of the scanning memory means, and wherein said data converter means includes conversion table memory means for receiving an address, which includes a digital value corresponding to said digital data signal together with said conversion code portion, and for outputting a converted digital value in said common format from a storage location of said conversion memory means identified by said address.

Claim 7

The word selector of claim 1 wherein the data converter means provides a conversion complete signal when said one of said conversions is complete and wherein the word selector further comprises: third latch means for retaining the one of said digital address values generated by said addressing means when the tag found signal occurs; fourth latch means for receiving said one of said digital address values from the third latch means, for retaining said one value when said conversion complete signal occurs, and for providing said one value so retained to the digital-to-analog converter means; fifth latch means for retaining the conversion code stored in the one of said storage locations addressed by said one of the digital addresses when the tag found signal occurs and for providing said code so retained to said data converter means; and sixth latch means for receiving the data signal value retained by the first latch means and for retaining said value when the tag found signal occurs, so that, while the digital-to-analog converter means converts a converted digital value corresponding to a first digital data signal value into the one of the analog signals corresponding to an address value retained by the fourth latch; said digital data converter means performs the conversion indicated by said code retained by the fifth latch means on the data signal value, which is retained by the sixth latch means and which corresponds to a second data signal value retained by the first latch means subsequent to said first signal value; and said comparator means is comparing a tag signal, which corresponds to a third digital data signal value retained by said first latch means subsequent to said second signal value, with tag signal values in said storage locations of the scanning memory means.

Claim 8

A telemetry word selector which is for use with a plurality of telemetry projects and receives a digital data signal, a digital tag signal, and a periodically occurring scan request signal and which comprises: first data latch means for retaining the data signal value existing when the scan request signal occurs; tag latch means for retaining the tag signal value existing when the scan request signal occurs; a scanner including scanning memory means having a predetermined number of addressable storage locations for storing in each of said locations a tag signal value, a shift conversion value, and a data format conversion value, address generator means for generating address values for sequentially addressing said storage locations when the scan request signal occurs, and means for comparing the tag signal value from the tag latch with the tag signal values from said memory means as said locations thereof during such addressing and for generating a tag found signal when said tag signal values are equal; first address latch means for retaining the address value being generated by the address generator means when the tag found signal occurs; first conversion value latch means for receiving and retaining said format conversion value from the one of said storage locations being addressed by the address generator means when the tag found signal occurs; data shifting converter means for receiving, when the tag found signal occurs, the data signal value from the first data latch and the shift conversion value from the one of said storage locations being addressed by the address generator means, for shifting said data signal value a number of digits predetermined by said shift conversion value to generate a shifted data value, and for generating a shift complete signal when said shifted data value is available; shifted data latch means for retaining said shifted data value when the shift complete signal occurs; second conversion value latch means for receiving and retaining said format conversion value from the first conversion value latch means when the shift complete signal occurs; second address latch means for receiving and retaining said address value from the first address latch means when the shift complete signal occurs; data format converter memory means for storing for each format conversion value a converted data value corresponding to each valid shifted data value, and for outputting, when addressed by the shifted data value retained by the shifted data latch means together with the format conversion value retained by the second conversion latch means, a corresponding such converted data value; analog-to-digital output means, which has a number of analog outputs individually corresponding to said storage locations of the scanning memory means, for receiving said address value retained by the second address latch means and selecting the corresponding one of the analog outputs, for receiving said converted data value from the data format converter memory means, and for converting said data value into an analog value output on the selected one of said analog outputs; project storage memory means for storing and for outputting, for said plurality of telemetry projects, sets of data individually corresponding thereto and having, for each of said storage locations of the scanning memory means, such a tag signal value, shift conversion value, and data format conversion value; and control means for supplying such sets of data to said project memory means for storage therein, for transferring a selected such set to the scanning memory means, and for initiating and terminating operation of said scanner in comparing said tag signal values.

Claim 9

A telemetry word selector which is for use with a plurality of telemetry projects and receives a digital data signal, a digital tag signal, and a periodically occurring scan request signal and which comprises: first data latch means for retaining the data signal value existing when the scan request signal occurs; tag latch means for retaining the tag signal value existing when the scan request signal occurs; a scanner including scanning memory means having a predetermined number of addressable storage locations for storing in each of said locations a tag signal value, a shift conversion value, and a data format conversion value, address generator means for generating address values for sequentially addressing said storage locations when the scan request signal occurs, and means for comparing the tag signal value from the tag latch with the tag signal values from said memory means as said locations thereof during such addressing and for generating a tag found signal when said tag signal values are equal; first address latch means for retaining the address value being generated by the address generator means when the tag found signal occurs; first conversion value latch means for receiving and retaining said format conversion value from the one of said storage locations being addressed by the address generator means when the tag found signal occurs; data shifting converter means for receiving, when the tag found signal occurs, the data signal value from the first data latch and the shift conversion value from the one of said storage locations being addressed by the address generator means, for shifting said data signal value a number of digits predetermined by said shift conversion value to generate a shifted data value, and for generating a shift complete signal when said shifted data value is available; shifted data latch means for retaining said shifted data value when the shift complete signal occurs; second conversion value latch means for receiving and retaining said format conversion value from the first conversion value latch means when the shift complete signal occurs; second address latch means for receiving and retaining said address value from the first address latch means when the shift complete signal occurs; data format converter memory means for storing for each format conversion value a converted data value corresponding to each valid shifted data value, and for outputting, when addressed by the shifted data value retained by the shifted data latch means together with the format conversion value retained by the second conversion latch means, a corresponding such converted data value; analog-to-digital output means, which has a number of analog outputs individually corresponding to said storage locations of the scanning memory means, for receiving said address value retained by the second address latch means and selecting the corresponding one of the analog outputs, for receiving said converted data value from the data format converter memory means, and for converting said data value into an analog value output on the selected one of said analog outputs; project storage memory means for storing and for outputting, for said plurality of telemetry projects, sets of data individually corresponding thereto and having, for each of said storage locations of the scanning memory means, such a tag signal value, shift conversion value, and data format conversion value; and control means for supplying such sets of data to said project memory means for storage therein, for transferring a selected such set to the scanning memory means, and for initiating and terminating operation of said scanner in comparing said tag signal values.