A video compression system is disclosed that is optimized to take advantage of the types of redundancies typically occurring on computer screens and the types of video loss acceptable to real time interactive computer users. It automatically adapts to a wide variety of changing network bandwidth conditions and can accommodate any video resolution and an unlimited number of colors. The disclosed video compression encoder can be implemented with either hardware or software and it compresses the source video into a series of data packets that are a fixed length of 8 bits or more. Sequences of one or more of these packets create unique encoding “commands” that can be sent over any network and easily decoded (decompressed) with either software or hardware. The commands include 3 dimensional copying (horizontal, vertical and time) and unique efficiencies for screen segments that are comprised of only two colors (such as text). Embodiments are also disclosed that improve the video compression depending on the popularity of pixel colors.

A Secured Keyboard Video and Mouse (SKVM) system for selectively controlling a plurality of individual computers by a single set comprising a keyboard, a pointing device and at least one video monitor (in some cases, can be controlled also by computer), the SKVM comprising separate electrical circuits for transmitting the display sources, the pointing device and keyboard communications.

Examples disclosed herein relate to video output instructions to determine whether a pre-boot video signal is to be provided and, in response to determining that the request for the pre-boot video signal has been received, enable power to an auxiliary output and provide the pre-boot video signal to a display device communicatively coupled to the auxiliary output.

A KVM (K: keyboard, V: Video, M: Mouse) switch connectable between a plurality of computers and a display, including: a plurality of input terminals that input analog image signals from the computers, respectively; a storage that stores an adjustment value that adjusts an image quality of each of the analog image signals for each input terminal; a processor that selects any one of the plurality of input terminals in accordance with an operation of an keyboard; and an adjustment circuit that adjusts the image quality of an analog image signal input to the selected input terminal based on the adjustment value corresponding to the selected input terminal.

In a method for invoking an input method, when an application on the server enters an editing state, a desktop serving end in the server monitors an operating system to determine that the application is in the editing state, and then the desktop serving end sends, to the terminal, a message indicating that the application is in the editing state, where the message triggers the terminal to invoke an input method of the terminal. In this way, when the application is in the editing state, a user may enter a text by using the input method of the terminal.

The present invention presents apparatuses and systems for operating multiple computers from a single keyboard and a single mouse and view composite videos generated from video output of the multiple computers on a single display, while preventing any possible information leakage between the computers. Keyboard and mouse commands detected by a host controller are used to control a video processor and a peripheral switch. The peripheral switch directs keyboard and mouse signals to one selected host and at the same time, the video processor creates an active display window showing video information from the selected host. Physical unidirectional isolators in the video, keyboard and mouse channels prevent any potential data leakages between hosts.

Embodiments that relate to displaying holographic keyboard and hand images in a holographic environment are provided. In one embodiment depth information of an actual position of a user's hand is received. Using the depth information, a holographic hand image representing the user's hand is displayed in a virtual hand plane in the holographic environment. In response to receiving a keyboard activation input from the user and using the depth information, the holographic keyboard image is adaptively displayed in a virtual keyboard plane in the holographic environment at a virtual distance under the holographic hand image representing the user's hand.

A communication device includes: an inputter that inputs a USB (Universal Serial Bus) signal from an input device; an acquirer that acquires an EDID (Extended Display Identification Data) signal from a monitor; an instructor that gives an instruction to output the EDID signal to another communication device; a switch that selectively switches a first route for outputting the acquired EDID signal to the another communication device and a second route for outputting the inputted USB signal to the another communication device; and a controller that controls the switch so as to switch from the second route to the first route in accordance with the instruction from the instructor.

A presentation server establishes a network connection with a presentation device and a client device. The presentation server is able to receive frame data transmitted by the presentation device and pointer coordinates transmitted by the client device. Therefore, the presentation server is able to display a virtual pointer on the presentation frame according to the pointer coordinates, so that the participant can operate the pointing device of the client device to control the virtual pointer so as to participate effectively in the presentation and interact with the speaker.

A peripheral devices switch, a peripheral device, and a keyboard configured to be connected to a plurality of host computers. The peripheral devices switch configured to be coupled to at least one set of peripheral devices and to a plurality of host computers. A color is assigned to each host computer and the at least one set of peripheral devices illuminates at least one polychromatic light source with the color that is assigned to an active host computer. A peripheral device interface to interface between the peripheral device and the peripheral devices switch may be a composite interface comprises two independent interface protocols either by sharing a single connector and cable but having separate pins in the connector and corresponding wires in the cable, or by having a separate cable and separate connector to each one of said interface protocol. The composite interface comprises a primary standard peripheral device interface for the standard peripheral device functionalities, and secondary dedicated peripheral device interface configured to instructs the illumination of the polychromatic indication.