초록 ▼

Universal Serial Bus active extension cable for increasing the distance between devices coupled via a Universal Serial Bus cable includes a pair of transceivers for bidirectional transmission of data therealong. A drive detector senses which terminal device is transmitting data and enables the other

Universal Serial Bus active extension cable for increasing the distance between devices coupled via a Universal Serial Bus cable includes a pair of transceivers for bidirectional transmission of data therealong. A drive detector senses which terminal device is transmitting data and enables the other terminal device to receive the data. A speed detector senses which of more than one transmission speed is being used and sets the devices coupled to the cable accordingly. An end-of-packet detection determines when the transmission of a packet of data has been completed. When the system enters a suspend mode, a detector sets the components to a low power mode.

대표청구항 ▼

1. A Universal Serial Bus cable extender comprising, in combination:two bus transceivers capable of receiving and transmitting signals bidirectionally in upstream and downstream paths along a bus for extending the length of a Universal Serial Bus cable for devices attached to each end of the Univers

1. A Universal Serial Bus cable extender comprising, in combination:two bus transceivers capable of receiving and transmitting signals bidirectionally in upstream and downstream paths along a bus for extending the length of a Universal Serial Bus cable for devices attached to each end of the Universal Serial Bus cable; drive detection means for determining which port is sending data and enabling the other port; End of Packet detection means for disabling transmissions; speed detection means for determining a transmission speed of the device attached to the bus's downstream port and setting the upstream port for that speed; and suspend detection means for setting said transceivers drive detection means, End of Packet detection means, and speed detection means to a low power mode when the bus is in a suspend state.