×

Configurable volatile memory without a dedicated power source for detecting a data save trigger condition

  • US 9,721,660 B2
  • Filed: 12/02/2014
  • Issued: 08/01/2017
  • Est. Priority Date: 10/24/2014
  • Status: Active Grant
First Claim
Patent Images

1. A volatile memory data save subsystem for a motherboard in a system, the subsystem comprising:

  • a volatile memory device shared power source coupling that when coupled to a shared power source and also coupled to a volatile memory device by the motherboard, provides operating power to the volatile memory device, the volatile memory device being one of at least two separately pluggable devices that receive power from the shared power source;

    a data save trigger coupling that when coupled to the volatile memory device and triggered, sends a data save command toward the volatile memory device; and

    a data save trigger controller that operates to trigger the data save trigger coupling when at least one of the following conditions occur;

    (a) a programmable amount of time passes with the volatile memory device being powered by a source which is not driven by an alternating current (“

    AC”

    ) power source;

    (b) a voltage level on the volatile memory device shared power source drops to a value that is less than normal operating power but is still sufficient to power the volatile memory device during a data save operation;

    (c) the data save trigger controller is notified of an operating system shutdown command;

    or(d) the data save trigger controller is notified of an explicit data save command in the absence of an operating system shutdown command.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×