| http://www.w3.org/ns/prov#value | - ce has session request protocol SRP and host negotiation protocol HNP functions, as shown in FIGS. 2A and 2B. [0095] In this case, the session request protocol SRP is a protocol by which the B-device requests the supply of VBUS (power) from the A-device. [0096] With OTG, if no bus is used, the A-device can halt the supply of VBUS. This makes it possible to prevent wasteful power consumption when t
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