Apparatus and method for controlling USB operation
First Claim
1. A Universal Serial Bus (USB) apparatus connectable to an external host device, the apparatus comprising:
- a USB connector to which a USB cable connected to the host device is connected; and
a switching unit to switch between first and second operation modes by controlling power lines and data lines of the USB cable via the USB connector, the first operation mode being a mode in which data communication with the host device is enabled, and the second operation mode being a mode in which an operation depending on a user input is enabled and data communication with the host device is disabled;
wherein power can be charged from the host device in both the first operation mode and the second operation mode, andwherein, when the switching unit switches from the first operation mode to the second operation mode, the data lines are disconnected, after a predetermined time period elapses after the data lines are disconnected, the power lines are disconnected, and once the data lines and the power lines have been disconnected, a signal to re-connecting the power lines is output.
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Accused Products
Abstract
An apparatus and method for controlling a USB operation, whereby the USB operation can be controlled without unplugging a USB cable while maintaining a charge state from a host device. The USB apparatus includes a USB connector to which a USB cable connected to a host device is connected, and a switching unit to switch to one of a first operation mode, in which data communication with the host device is enabled, and a second operation mode, in which an operation depending on a user input is enabled and data communication with the host device is disabled, by controlling power lines and data lines of the USB cable via the USB connector, wherein power can be charged from the host device in both the first operation mode and the second operation mode. Accordingly, a user can switch a USB operation mode without unplugging the USB cable.
27 Citations
26 Claims
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1. A Universal Serial Bus (USB) apparatus connectable to an external host device, the apparatus comprising:
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a USB connector to which a USB cable connected to the host device is connected; and a switching unit to switch between first and second operation modes by controlling power lines and data lines of the USB cable via the USB connector, the first operation mode being a mode in which data communication with the host device is enabled, and the second operation mode being a mode in which an operation depending on a user input is enabled and data communication with the host device is disabled; wherein power can be charged from the host device in both the first operation mode and the second operation mode, and wherein, when the switching unit switches from the first operation mode to the second operation mode, the data lines are disconnected, after a predetermined time period elapses after the data lines are disconnected, the power lines are disconnected, and once the data lines and the power lines have been disconnected, a signal to re-connecting the power lines is output. - View Dependent Claims (2, 3)
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4. A Universal Serial Bus (USB) apparatus connectable to an external host via a USB cable, the apparatus comprising:
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a USB connector to which the USB cable is connected, to connect the host device; a switching unit to control power lines and data lines of the USB cable via the USB connector; and a controller to control the switching unit to switch between a first operation mode in which data communication with the host device is enabled and a second operation mode in which an operation depending on a user input is enabled and data communication with the host device is disabled; wherein power is charged from the host device in both the first operation mode and the second operation mode, and when switching from the first operation mode to the second operation mode, the controller controls the switching unit to disconnect the data lines, to disconnect the power lines after a predetermined time period elapses after the data lines are disconnected, and to output a signal to re-connect the power lines if the data lines and the power lines have been disconnected. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A method of controlling a Universal Serial Bus (USB) operation of a USB device connected to a host device via a USB cable, the method comprising:
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selecting one of a first operation mode in which data communication with a host device is enabled and a second operation mode in which an operation depending on a user input is enabled and data communication with the host device is disabled; and switching to a selected operation mode by controlling power lines and data lines of a USB cable, wherein power can be charged from the host device in both the first operation mode and the second operation mode, and wherein if the second operation mode is selected while operating in the first operation mode, the switching to the selected operation mode comprises; disconnecting the data lines of the USB cable; disconnecting the power lines of the USB cable after a predetermined time period elapses; and outputting a signal to re-connect the power lines, if the data lines and the power lines have been disconnected. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A computer readable recording medium storing a computer readable program for executing a method of controlling a Universal Serial Bus (USB) operation of a USB device connected to a host device via a USB cable, the method comprising:
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selecting one of a first operation mode in which data communication with a host device is enabled and a second operation mode in which an operation depending on a user input is enabled and data communication with the host device is disabled; and switching to a selected operation mode by controlling power lines and data lines of a USB cable, wherein power can be charged from the host device in both the first operation mode and the second operation mode, and wherein if the second operation mode is selected while operating in the first operation mode, the switching to the selected operation mode comprises; disconnecting the data lines of the USB cable; disconnecting the power lines of the USB cable after a predetermined time period elapses; and outputting a signal to re-connect the power lines, if the data lines and the power lines have been disconnected.
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17. An apparatus connectable to an external host device, the apparatus comprising:
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a housing; a connector disposed at or in the housing, having data lines to transfer data between the apparatus and the host device and a power line to receive power from the host device; and a switching unit arranged within the housing to switch between a first operation mode in which data communication with the host device is enabled and a second operation mode in which an operation depending on user input is enabled and data communication with the host device is disabled, by controlling the power lines of the USB connector; wherein power is charged from the host device in both the first operation mode and the second operation mode, and wherein, when switching from the first operation mode to the second operation mode, the controller controls the switching unit to disconnect the data lines, to disconnect the power lines after a predetermined time period elapses after the data lines are disconnected, and to output a signal for re-connecting the power lines if the data lines and the power lines have been disconnected. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification