The patent has a January 31, 2019 publication date, and uses line drawings to outline what is mostly pretty standard fare for a console controller.
A patent has appeared on the US Patent and Trademark Office (USPTO) website, detailing games controller tech that could be part of the Yeti set-up.
It is not yet fully known whether Yeti will be a streaming service only, based on its successful Project Stream tests at the end of past year, or if Google will also release a dedicated console unit. The controller offers the traditional D-pad, thumb sticks, four primary buttons, and four trigger buttons. The only Google-specific detail in the diagrams is the inclusion of a Google Assistant icon on the lower edge of the controller's face, which could be a button or light-up indicator.
The company could release a low-priced set-top box similar to an Ouya that plugs into TVs and plays mobile games, select AA titles, and acts as a main conduit for the Project Stream cloud streaming subscription. The game controller itself has a built-in notification system that can notify a player of various game-related responses (i.e. chat notification, leaderboard changes, etc.). Instead of being used with a specific device, the Google controller would be used with several devices and device types - so you could have one controller that worked across a television screen, a PC, a tablet, and a mobile phone.
Whatever it is, we'll find out for sure March 19.
"We haven't heard many specifics about Google's video game plans, but what we have heard is that it's a three-pronged approach: 1) Some sort of streaming platform, 2) some sort of hardware, and 3) an attempt to bring game developers under the Google umbrella, whether through aggressive recruiting or even major acquisitions".