Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output process timing
Reexamination Certificate
2006-01-10
2006-01-10
Gaffin, Jeffrey (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output process timing
C710S061000, C710S053000, C710S058000, C710S060000, C710S057000, C710S005000, C710S006000, C710S022000, C710S025000, C710S028000
Reexamination Certificate
active
06985977
ABSTRACT:
System and method for transferring data to a device using double buffered data transfers. A host computer system couples to a data acquisition device. The device includes a first read buffer and a second read buffer for storing output data received from the host computer. The device reads first data from the computer and stores it in the first read buffer. The first data is transferred out from the first read buffer while the device reads second data from the computer and stores it in the second read buffer. The second data is transferred out from the second read buffer (after the transfer of the first data) while the device reads third data from the host computer and stores the third data in the first read buffer. Thus, the data acquisition device successively reads data into one read buffer concurrently with transferring data out from the other buffer, respectively.
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Gaffin Jeffrey
Hood Jeffrey C.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
National Instruments Corporation
Schneider Joshua D.
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