Control apparatus and method thereof

Details Control apparatus and method thereof Control apparatus and method thereof

2007-12-04

2007-12-04

Park, Ilwoo (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral monitoring

C710S019000, C710S105000, C714S048000, C714S055000

Reexamination Certificate

active

10733362

ABSTRACT:
A control apparatus for controlling a digital video apparatus using Universal Serial Bus, comprises a storage unit which stores a control program and a control unit which executes the control program. The control program controls (a) step of judging whether a response to a first request for requesting to change a status of the digital video apparatus to a predetermined status is an ACK or not, (b) a step of judging, if the response is the ACK, whether notification information is received or not before a lapse of a predetermined time, the notification information notifying the control apparatus that the status of the digital video apparatus is changed, and (c) a step of transmitting, if the notification information cannot be received before the lapse of the predetermined time, a second request for requesting information representative of the status of the digital video apparatus to the digital video apparatus.

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Universal Serial Bus Specification, Revision 1.1 (Sep. 23, 1998).
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On-The-Go Supplement to the USB 2.0 Specification, Revision 1.0a (Jun. 24, 2003).
On-The Go Supplement to the USB 2.0 Specification, Revision 1.0a Jun. 24, 2003.

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