Dynamic memory architecture employing passive expiration of data
AssigneeInternational Business Machines Corporation
InventorsPhilip George Emma, Robert Kevin Montoye, William Robert Reohr
Life of this patent
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Abstract
Apparatus for passively tracking expired data in a dynamic memory includes a time stamp memory configurable for storing information relating to a refresh status of one or more corresponding data entries in the dynamic memory. The apparatus further includes a timer configurable for defining a desired window of time in which a refresh operation of data in the dynamic memory is to occur in order to ensure that the data is valid. Control circuitry is coupled to the time stamp memory and to the timer. The control circuitry is operative to manage the information stored in the time stamp memory relating to the refresh status of the one or more corresponding data entries in the dynamic memory.
Claims20
Apparatus for passively tracking expired data in a dynamic memory, the apparatus comprising:
- a time stamp memory configurable for storing information relating to a refresh status of one or more corresponding data entries in the dynamic memory;
- a timer configurable for defining a desired window of time in which a refresh operation of data in the dynamic memory is to occur in order to ensure that the data is valid;
- and
- control circuitry coupled to the time stamp memory and to the timer, the control circuitry being operative to manage the information stored in the time stamp memory relating to the refresh status of the one or more corresponding data entries in the dynamic memory.
A method for passively tracking expired data in a dynamic memory, the method comprising:
- a first element storing information relating to a refresh status of one or more corresponding data entries in the dynamic memory;
- a second element defining a desired window of time in which a refresh operation of data in the dynamic memory is to occur in order to ensure that the data is valid;
- and
- a third element managing the stored information relating to the refresh status of the one or more corresponding data entries in the dynamic memory;
- wherein the third element is coupled to the first element and the second element.
Apparatus for passively tracking expired data in a dynamic memory, the apparatus comprising:
- a first element operative to store infolination relating to a refresh status of one or more corresponding data entries in the dynamic memory;
- a second element operative to define a desired window of time in which a refresh operation of data in the dynamic memory is to occur in order to ensure that the data is valid;
- and
- a third element operative to manage the stored information relating to the refresh status of the one or more corresponding data entries in the dynamic memory;
- wherein the third element is coupled to the first element and the second element.
Dependencies are inferred from the claim text.