Communication interface for an electronic device
1 Assignment
0 Petitions
Accused Products
Abstract
A mobile telephone handset is provided with a connector (8) and circuitry (18, 19) which permits universal serial bus (USB) and single-ended (SE) modes of data transmission with another device such as a personal computer, another mobile telephone handset or keyboard.
-
Citations
39 Claims
-
1-18. -18. (canceled)
-
19. A communication interface for permitting an electronic device to be in communication with another electronic device using first or second data transmission modes, wherein said first mode of data transmission comprises single-ended asynchronous data transmission and wherein said second mode of data transmission comprises USB differential transmission of data, the interface comprising:
-
first communication circuitry for communication using said first mode; second communication circuitry for communication using said second mode; switching circuitry for selectively connecting the first/second communication circuitry to a common transmission path based on circuitry for determining the mode of data transmission on said common transmission path; a USB port for receiving a data bus, the USB port including power and ground lines and a first and second data line for forming part of the common transmission path; wherein the interface is configured to use the first and second data lines for data transmission in said second USB differential mode and in said first single-ended asynchronous data transmission mode. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
-
-
39. A method for permitting an electronic device to be in communication with another electronic device using first or second data transmission modes, wherein said first data transmission mode comprises single-ended asynchronous data transmission and wherein said second data transmission mode comprises USB differential transmission of data, the method comprising:
-
permitting first communication circuitry to communicate using said first data transmission mode; permitting second communication circuitry to communicate using said second data transmission mode; permitting switching circuitry to connect selectively the first/second communication circuitry to a common transmission path based on determining circuitry for determining the mode of data transmission on said common transmission; permitting a USB port to receive a data bus, the USB port including power and ground lines and first and second data lines, the first and second data lines forming part of the common transmission path; and permitting the first and second data lines to be used in data transmission in said second USB differential data transmission mode and in said first single-ended asynchronous data transmission mode.
-
Specification