A tablet computer is provided, which includes a sensor section operable to detect positional input by a human operator and output a positional input signal; a display, laid over the sensor section, operable to receive and display a video signal; and a processor, coupled to a memory storing programs for running an operating system (OS) and executing software loaded to the memory, the processor being operable to receive and process the positional input signal from the sensor section and to output a video signal of the OS and the software to the display. The tablet computer further includes a sensor signal filter capable of selectively communicating the positional input signal from the sensor section to the processor, to a separate external processor, or to neither the processor nor the separate external processor; and a display switch capable of coupling the display to the processor or to the separate external processor.

A display apparatus is provided. The display apparatus includes a display configured to display a user interface window for receiving a letter input; a communication interface configured to receive a control instruction for inputting letters from a control device; and a controller configured to control the display to selectively display an on-screen keypad for inputting letters on the user interface window based on whether the control device includes letter keys for inputting letters.

The present disclosure provides a cursor marking method, a switching device, and a computer system. The cursor marking method includes: by a switching device, detecting an operation of at least one input device to at least one computer device via the switching device, wherein the at least one input device is configured to perform at least one trigger operation, to trigger at least one operating system of the at least one computer device to execute a cursor position marking function; and when the switching device detects the at least one trigger operation, by the switching device, driving the at least one operating system of the at least one computer device to execute the cursor position marking function, to display cursor position marking effect on at least one display device electrically coupled to the at least one computer device.

The present disclosure provides a keyboard, including: a keyboard body; at least one physical key disposed on the keyboard body; at least one virtual key projection device connected to the keyboard body and configured to present, by means of projection, an image of at least one virtual key in a projection area outside the keyboard body; and a click detection device configured to detect whether a finger clicks on the projection area and determine on which virtual key the finger clicks in response to that the finger clicks on the projection area.

A secure keyboard resource executed in a network device detects a user input, and generates a user input data structure representing the user input relative to input options presented to the user, the user input data structure based on the secure keyboard resource identifying a position of the user input relative to the input options. The secure keyboard resource sends the user input data structure to one or more executable destination resources, having requested supply of the user input data structure responsive to a user selection, only via a corresponding data path providing the destination resource with access to the user input data structure, for execution of a service by the one or more executable destination resources based on the user input data structure. The secure keyboard resource thus minimizes spying by limiting access of the user input data structure to the destination resource via the data path.

In one disclosed method, a computing system determines, on a first occasion, that a first user typed a first sequence of characters including at least a first character followed by a second character, and determines first data that is based at least in part on a first time interval between first and second interactions by the first user with a keyboard while typing the first character and the second character within the first sequence of characters. On a second occasion, the computing system determines that a person typed a second, different sequence of characters including at least the first character followed by the second character, determines second data that is based at least in part on a second time interval between third and fourth interactions by the person with a keyboard while typing the first character and the second character within the second sequence of characters, and determines that the person is the first user based at least in part on the first data and the second data.

Aspects of the present disclosure involve a system and a method for performing operations comprising: detecting physical touch of a touch-sensitive component on a back portion of a client device, the client device displaying a graphical user interface on a touch-sensitive display screen of a front portion of the client device; in response to detecting the physical touch, transmitting an electrical signal representing the physical touch of the touch-sensitive component on the back portion of the client device to the touch-sensitive display screen of the front portion of the client device; and causing an operation associated with the graphical user interface to be executed in response to the touch-sensitive display screen receiving the electrical signal representing the physical touch of the touch-sensitive component on the back portion of the client device.

An input control device includes a detection unit configured to detect a first character input by a key operation. The input control device also includes a determination unit configured to determine whether or not the detected first character is the same as a second character input immediately before the first character, and an input processing unit configured to accept an input of the first character when it is determined that the first character is not the same as the second character without accepting the input of the first character when it is determined that the first character is the same as the second character.

The invention discloses a glasses waistband-type computer device, comprising a waistband body, wherein the middle of the front of the waistband body or other parts of the waistband body is detachably installed with a smartphone, and the front of the waistband body is further provided with a left keyboard located on the left side of the waistband wearer's navel and a right keyboard located on the right side of the waistband wearer's navel; the left and right keyboards are connected to the smartphone in a wired manner or a wireless including a Bluetooth manner. During man-machine interaction, the user wears a waistband so that the left keyboard is located to the left of the navel and the right keyboard is located to the right, to form a waistband keyboard. The invention is novel in structure, convenient to use, easy to carry, and can provide a good man-machine interaction mode.

A computer system can be controlled with non-contact inputs through zonal control. In an embodiment, a non-contact input that is an eye-tracking device is used to track the gaze of a user. A computer's display, and beyond, can be separated into a number of discrete zones according to a configuration. Each zone is associated with a computer function. The zones and/or their functions can, but need not, be indicated to the user. The user can perform the various functions by moving gaze towards the zone associated with that function and providing an activation signal of intent. The activation signal of intent can be a contact-required or non-contact action, such as a button press or dwelling gaze, respectively.