>>>2024-06-02 Consumer Electronics Control (PDF) > 자유게시판

One wonders if shoppers had been confused by these completely different vendor manufacturers for the same thing, it isn't a state of affairs that happens fairly often with shopper interconnects. The tv modified the whole lot about the way consumers work together with AV tools: now we all keep on the couch. Within the period of vinyl, once you needed to get off the couch to start a file anyway, distant controls weren't such an essential part of the stereo market. There are, of course, promised solutions on the market. See Henry Ott, Noise Reduction Techniques in Electronic Systems, 2nd ed., John Wiley & Sons, 1988.) There are shielding approaches that provide a low ground transfer impedance at excessive frequencies, whereas at the identical time providing a a lot increased impedance at 60 Hz. The effective source impedance was about one ohm, if I recall. In the example you cite, the bottom transfer impedance at one finish of the cable would be 100 ohms, rendering the shield ineffective. USB began out as a reasonably pure and easy serial hyperlink, and then more use-circumstances have been piled on, culminating in the marriage of two utterly completely different interconnects (USB and Thunderbolt) in one bodily connector. HDMI actually involves this degree of complexity more honestly than USB.

A couple more are used for the audio return channel or ethernet (you can't do both at the identical time) characteristic of HDMI. That implies that the receiver is sending video to the Tv, receiving audio from the Tv by way of audio return channel (ARC), and both are exchanging commands. Messages have a easy format: a one-byte header with the sending and receiving addresses, a one-byte opcode, and then whatever bytes are anticipated as parameters to the opcode. Within the STB state of affairs, something like Xfinity X1 or Dish Hopper, we now have an inversion of control: the only remote you may need, they hope, shield control cable is the STB's distant. As some proof of this battle, consider the case of Xfinity Xumo (previously Flex), the compact STB that Xfinity provides to its web customers for free. Wikipedia offers the names nexTViewLink (horrible), SmartLink (mediocre), Q-Link (lazy), and EasyLink (mediocre again). Philips EasyLink continues to be with us. Surprisingly unstandardized in that curious method where there are few enough IR transceiver ICs that a variety of devices actually are compatible (consider the ubiquitous Philips protocol), however no one documents it and detailed button codes typically vary in small and annoying methods. This was one of the principal struggles confronted by the American residence for many years.

Over the many years since, it has evolved into a technique to address a enterprise problem: everyone that sells you AV equipment prefers that you passionately navigate their on-screen menus while utterly forgetting about these of your other parts. Samsung TVs. That doesn't cease Samsung from pushing their very own branding in their menus and port labeling, though. I am largely kidding about this emotional interpretation of the situation, however obviously the Tv manufacturer does have an incentive to distract your consideration from the STB, which in all probability has one thing to do with the tendency of Smart TVs to pop up numerous on-screen chrome everytime you flip them on. Other AV units like residence theater receivers nearly universally have CEC assist. This all sounds pretty nice - perhaps you’d prefer to record it? These remotes, usually thrown in with house theater receivers as a perk, have some combination of a database of remote protocols pre-reverse-engineered by the manufacturer and a "learn" mode through which they'll file unknown protocols for naive playback. The AV receiver industry has been surprisingly unambitious about capturing Platform Revenue, most likely as a result of soundbars have just about eradicated everything but higher-finish, "audiophile"-focused brands. In these sorts of configurations, the home theater receiver is commonly used for at least some video switching.

And different elements of CEC are designed to accommodate these kinds of more advanced networks. CEC could be utilized in far more complex scenarios. See mods for extra info. See the replace docs for extra infomation. For those who didn't, it won't, or at the least setup will probably be extra complex. CEC even has a reasonably complicated addressing mechanism to take advantage. Conceptually you can even use the Tv to control non-video capabilities. For instance, when you utilize a Tv with a stereo receiver or soundbar, it should ahead quantity up/down commands from the distant to the audio device through System Audio Control. For instance, the receiver can use CEC to activate the Tv when a video enter is chosen. Considering the listing of high-level options within the specification, "One Touch Play" signifies that a device can point out that it has video to indicate (causing a Tv to turn on and choose that enter) while "System Standby" implies that a system being turned off can inform the other gadgets on the bus to turn off as well.