Data transfer control device and electronic instrument

Details Data transfer control device and electronic instrument Data transfer control device and electronic instrument

2006-03-20

2009-11-10

Knoll, Clifford H (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus interface architecture

C710S071000

Reexamination Certificate

active

07617347

ABSTRACT:
A data transfer control device including: a link controller which analyzes a packet received through a serial bus and generates a packet to be transmitted through the serial bus; an interface circuit which performs interface processing between the data transfer control device and a display driver connected to the data transfer control device through an interface bus; and a signal detection circuit which detects a vertical synchronization signal VCIN used for indicating a non-display period of a display panel and outputs a detection signal VDET. When the link controller has received a read request packet which requests reading of status of the VCIN, the link controller waits for the VDET to be output, and performs processing of transmitting a response packet through the serial bus on condition that the VDET has been output.

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