Loading patent…
AssigneeHewlett-Packard Company
InventorAlexandre Delorme
Estimating the term…
Data processing apparatus is described comprising a processor and at least one peripheral device. The processor is arranged to service the peripheral device either in an interrupt mode in which the peripheral device is serviced in response to interrupt signals generated by the peripheral device or in a timed mode in which the peripheral device is periodically polled and serviced if required. The apparatus has a dynamic switching arrangement for switching from the interrupt mode to the timed mode depending upon conditions dynamically determined within the apparatus, at least one of said conditions being that the rate at which the peripheral device generates interrupt signals exceeds a predefined or programmable threshold frequency. The rate of polling in the timed mode is less than the threshold frequency. Thus, dynamic switching between a interrupt driven mode and a timed mode is used in order to make more efficient use of shared system resources by servicing peripheral devices only periodically at times of high demand.
Data processing apparatus comprising a processor and at least one peripheral device, the processor being arranged to service the peripheral device either in an interrupt mode in which the peripheral device is serviced in response to interrupt signals generated by the peripheral device or in a timed mode in which the peripheral device is periodically polled and serviced if required, the apparatus having a dynamic switching arrangement for switching from the interrupt mode to the timed mode depending upon conditions dynamically determined within the apparatus, at least one of said conditions being that the rate at which the peripheral device generates interrupt signals exceeds a predefined or programmable central processing unit-determined threshold frequency, wherein the rate of polling in the timed mode is less than the threshold frequency.
A method for operating data processing apparatus comprising a processor and at least one peripheral device, the method comprising servicing the peripheral device either in an interrupt mode in which the peripheral device is serviced in response to interrupt signals generated by the peripheral device or in a timed mode in which the peripheral device is periodically polled and serviced if required, and dynamically switching from the interrupt mode to the timed mode depending upon conditions dynamically determined within the apparatus, at least one of said conditions being that the rate at which the peripheral device generates interrupt signals exceeds a predefined or programmable central processing unit-determined threshold frequency, wherein the rate of polling in the timed mode is less than the threshold frequency.
A computer program product for execution on data processing apparatus comprising a processor, at least one peripheral device, and means for servicing the peripheral device either in an interrupt mode in which the peripheral device is serviced in response to interrupt signals generated by the peripheral device or in a timed mode in which the peripheral device is periodically polled and serviced if required, the program product comprising program logic for dynamically switching from the interrupt mode to the timed mode depending upon conditions dynamically determined within the apparatus, at least one of said conditions being that the rate at which the peripheral device generates interrupt signals exceeds a predefined or programmable central processing unit-determined threshold frequency, wherein the rate of polling in the timed mode is less than the threshold frequency.
Dependencies are inferred from the claim text.