HID - What are the functions?

Human Interface Device, or HID for short, is a standard for communication between input devices, computers or other devices. The HID standard was included in the creation of the USB specification (Universal Serial Bus). Keyboards, mice, game controllers, touchscreens and other input devices are part of the HID class.

One of the main features of HID devices is that the operating system can easily recognize and install them. As a rule, no special drivers are required, which facilitates setup and use. This feature is known as plug-and-play capability

As HID is an industry-wide standard, it is supported by many operating systems. These include Windows, macOS, Linux and others. The standard also proves to be very flexible. Its specifications can always be extended. This means that it can be easily adapted to new technologies and device classes.

Although mice and keyboards are the most popular users, the standard includes a variety of other device types. These include not only the game controller or joystick, but also technologies that can be useful for certain applications. Examples include medical measuring devices or industrial control systems.

HID devices are designed to respond quickly and without delay, which is important for real-time applications. This makes the standard particularly important for a KVM switch or a KVM matrix system so that low latency times can be implemented. G&D technologies even run in real time.

HID support is essential in KVM matrices and other similar technologies as these devices typically need to manage multiple input devices. A KVM matrix with HID support can handle more keyboards, mice and other input devices, giving end users more flexibility and compatibility.

bluedec™
The term consists of the words blue – a reference to our corporate color – and codec, and refers to a multi-stage compression logic.
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Cascading
The digital KVM matrix switches can be cascaded in three levels to extend the connection availability for computers. The leader device takes over all control tasks. Learn more >>
Channel grouping
Channel grouping creates multi-monitor workstations for computers with multiple video channels. Multiple channels can be grouped and switched together. Learn more >>
CON module
(Abbr. for console) The user console (CON module) receives the KVM information at the console. Learn more >>
Controller card
The controller card manages the system’s central administration, monitoring and control. Learn more >>
CPU module
(Abbr. for Central Processing Unit); Computer connection module, which taps the computer’s KVM signals and transmits them to the matrix switch. Learn more >>
CrossDisplay-Switching
CrossDisplay-Switching switches keyboard and mouse between the computers of a multi-monitor workplace by mouse movement alone. It is part of the TradeSwitch-Function. Learn more >>
DHCP
DHCP (Dynamic Host Configuration Protocol) is a protocol that is used in a TCP/IP network. It manages and distributes IP addresses to the requesting hosts. Learn more >>
Display switch
A screen switch or display switch is a device that makes it possible to connect several video sources to one or more screens. However, it differs from a KVM switch in terms of functionality and scope. Learn more >>
DisplayPort switch
A DisplayPort switch enables multiple video sources to be connected to a monitor with a DisplayPort connection.
EDID support
A monitor’s EDID information (Extended Display Information Data) inform the graphics card of a connected computer about the monitor’s various technical features. Learn more >>
FreeSeating
FreeSeating automatically restores a user's personal working environment at any workplace. A single login applies to all console modules at that workplace. The function is part of the TradeSwitch-Function. Learn more >>
HDMI-KVM-Extender
An HDMI KVM extender is a special device that makes it possible to transmit HDMI video and KVM signals (keyboard, video, mouse) over greater distances than with conventional cabling. Learn more >>
HID
HID stands for "Human Interface Device" and refers to input devices such as keyboards, mice, joysticks, game pads, trackballs, touchpads or touchscreens that are used to enable human interaction with computers or other electronic devices. HID is a standard for communication between input devices and computers or other devices. Learn more >>
I/O card
I/O cards are modular cards with multiple in-/output ports to which you can connect user or computer modules via CAT cables or fibre optics. Learn more >>
IP-Control-API
The IP-Control-API enables text-based XML control of a KVM matrix system over the network — sending switching commands and retrieving switching states, independently of any console module. Learn more >>
KVM
KVM is the abbreviation for keyboard, video, mouse. In the IT world, the term in combination with the technology developed for it stands for a special technology that makes it possible to control several computers or servers using a single set of keyboard, monitor and mouse. Learn more >>
KVM Matrix-Grid™
The KVM Matrix-Grid™ enables bidirectional communication between digital KVM matrix switches. It is ideal for applications where bidirectional access between two or more matrix central units is required. Learn more >>
KVM-Network-Switch
The KVM network switch is similar in function to a KVM matrix system, but is not the same; it does offer some network functions, but does not have the extended scalability and multi-user functions of a fully-fledged KVM matrix. Learn more >>
KVM-over-IP-Switch
A KVM-over-IP switch is a state-of-the-art device that allows users to remotely control multiple computers or servers over an IP network. Since a KVM-over-IP matrix offers the same functions, the term "KVM-over-IP switch" is often only used as a synonym. Learn more >>
KVM-Switch
KVM switches are often the basis for building redundant systems in different control room applications.
Operate multiple computers with only one mouse, one keyboard and up to four screens and make your workplace more efficient and ergonomic. Switching between computers is done via buttons on the front panel, configurable key combinations or a serial device.
MC modules
Multi-channel modules are used to implement multi-video computers or multi-monitor workstations. Learn more >>
Mirror-Mode
Mirror mode refers to the ability to display the same video content simultaneously on multiple output devices, such as monitors or video walls. Learn more >>
Modbus
By definition, Modbus is a communication protocol that was developed by Gould-Modicon in 1979. It enables simple, reliable and fast data transmission between automation and field devices. Learn more >>
Push-Get function
The Push-Get-Function transfers the switch state of one console module to another – pushing it there or getting it from there. A source can be handed over within the team without the recipient having to switch. Learn more >>
Remote-KVM
Remote KVM is a technology that allows users to control one or more computers or servers remotely as if they were physically on site. Normally, this remote control is done via a network that uses the Internet. KVM-over-IP matrix systems, for example, are used to deploy remote KVM extensively. Learn more >>
RTSP
The Real Time Streaming Protocol (RTSP) is a network control protocol that is used to control the data transfer of video and audio files in real time between server and client. It enables the playback of media-based content without having to download it completely. Learn more >>
Scenario switching
Scenario switching stores the switch state of one workplace, several workplaces or the entire system and restores it on demand. Learn more >>
SNMP
Simple Network Management Protocol. Devices with SNMP support offer extensive possibilities to set up automatisms and active alarm notifications. Tools for SNMP management offer options for issuing critical system statuses as alarms via e-mail or SMS. Learn more >>
Stay-Alive function
Switching ON and OFF or „moving“ a switching component the CPU modules remain unaffected preventing the „freezing“ of computers whilst connection is inactive. Learn more >>
Switch card
The switch card is the central unit containing the switching logic of the matrix switch. Learn more >>
Syslog
Syslog (System Logging Protocol) is a proven protocol for transmitting log data within a network. It supports the centralized management of event logs generated by various network devices such as servers, firewalls and routers. Learn more >>
TCP connection
A TCP (Transmission Control Protocol) connection is a connection between two endpoints in a computer network based on the TCP protocol. Unlike the UDP connection, TCP uses a three-way handshake mechanism to establish a connection between the endpoints before data is transmitted. This mechanism ensures that both endpoints are ready to send and receive data before the transmission begins.

During data transmission, TCP constantly monitors the connection and detects and corrects errors such as lost data packets or congestion. TCP ensures that all data packets are received in the correct order and, if necessary, requests missing packets to ensure that all data is received in full. Learn more >>
TCP/IP
TCP is a reliable transport layer protocol of the Internet Protocol (IP) and ensures that data is transferred between endpoints reliably and in the correct order. Learn more >>
TLS
TLS (Transport Layer Security) is a cryptographic protocol that enables secure communication over a computer network. It is often used to ensure the privacy and integrity of data between communication partners, for example with HTTPS connections on the Internet. Transport Layer Security is the successor to SSL (Secure Sockets Layer) and offers improved security mechanisms. Learn more >>
TradeSwitch function
The TradeSwitch-Function combines several console modules into a group operated with one keyboard and mouse. CrossDisplay-Switching and FreeSeating are part of the function. Learn more >>
UDP connection
UDP (User Datagram Protocol) is a communication protocol of the Internet Protocol (IP) and is often used in IT communication. Unlike TCP (Transmission Control Protocol), UDP provides a non-reliable, connectionless link. A UDP connection allows a sender to send datagrams to a receiver without first establishing a connection or verifying that the receiver is ready to receive data. This connection is not reliable because data can be sent without confirmation or retransmission, which means that some data packets may be lost or arrive in the wrong order. Learn more >>
Unicast
Unicast is a network communication method in which a single source sends data to a single destination address. In this process, a data packet is sent from the source to a specific IP address and received by a single receiving device. Unicast is often used when direct and private communication between two devices is required, such as when transmitting email or retrieving web pages. Learn more >>

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