HowToAV explains HDMI CEC (or Consumer Electronics Control).
CEC allows AV devices connected via HDMI to communicate with one another allowing a limited amount of control from device to device. Therefor a Television display screen can provide levels of control over source devices and source devices can have limited control over a display.
For example, if you have CEC-enabled Television and CEC-enabled Blu Ray player which are connected via HDMI, then you may be able to control your Blu Ray player functionality using your TV remote. (This reduces the number of remote controls you have to use for your Audio Visual system).
Devices controlling devices is commonly known as CEC which stands for Consumer Electronics Control or HDMI CEC. It is a feature of the HDMI standard which is supported by a wide range of consumer and professional audio visual devices such as televisions, Blu Ray players, digital media streamers and games consoles. Although HDMI CEC is commonly supported, it is worth knowing that this function is usually switched off as a default on AV devices new out of the box.
CEC is commonly supported by all major consumer AV brands but many manufacturers have decided to give it their own brand names such as:
Hitachi and Vizio however are kind enough to call it 'HDMI CEC' !
Please note that though there is some common functionality between all CEC systems, not all manufacturers CEC interfaces are fully compatible with one another. Therefore, to get the best out of a CEC interface, using the same brand for Source and Display devices is required.
But to add some simple automation to a small AV or home entertainment system and to cut down the number of controllers you need to change one device to another CEC is an easy option to implement.
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