| 摘要 |
A chipset can detect whether a relevant portion of the system frame buffer has been updated and can send an interrupt to the display driver to invoke a registered hardware watchpoint routine to inform display driver of the updating. If the display is currently in display self refresh (DSR) state, display driver wakes up display controller components and requests to transmit a MIPI compatible DCS command to request copying of the updated data from system frame buffer into an on-panel frame buffer or a frame buffer associated with the display. The display driver can power-down graphics system components and enter DSR state again to save power.
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