This is the connection point thatĪllows an app to exchange data with another Bluetooth device using BluetoothSocket Represents the interface for a Bluetooth socket (similar to a TCP Remote device through a BluetoothSocket or query information about theĭevice such as its name, address, class, and bonding state. BluetoothDevice Represents a remote Bluetooth device. This, you can discover other Bluetooth devices, query a list of bondedīluetoothDevice using a known MAC address, and create aīluetoothServerSocket to listen for communications from other devices. TheīluetoothAdapter is the entry-point for all Bluetooth interaction. The following are the classes and interfaces you need in order to createīluetooth connections: BluetoothAdapter Represents the local Bluetooth adapter (Bluetooth radio). There are three steps to make a connection:Īll of the Bluetooth APIs are available in the Once your app has permission to use Bluetooth, your app needs to accessĭetermine if Bluetooth is available on the Use of the Bluetooth APIs requires declaring severalįile. Range of each other and neither device has removed the bond. They can reconnect automatically during a future session as long as they're in The two devices remain bonded, however, so The device that initiated the pairing request releases the channel that had After the pairing and bonding processes areĬomplete, the two devices exchange information. The devicesĬache these keys for later use. One device, aĭiscoverable device, makes itself available for incoming connection requests.Īnother device finds the discoverable device using a service discovery process.Īfter the discoverable device accepts the pairing request, the two devicesĬomplete a bonding process in which they exchange security keys. Finding devices that are either paired or available in the local area.įor a demonstration of using the Bluetooth APIs, see the Bluetooth Chat sampleįor Bluetooth-enabled devices to transmit data between each other, they mustįirst form a channel of communication using a pairing process.Use the Bluetooth APIs to accomplish the four major tasks necessary to This documentation describes different Bluetooth For Bluetooth devices with low power requirements, consider Classic Bluetooth is the right choiceįor more battery-intensive operations, which include streaming and communicatingīetween devices. Transfer data to and from other devices.Connect to other devices through service discovery.Query the local Bluetooth adapter for paired Bluetooth devices.Using the Bluetooth APIs, an app can perform the following: Point-to-point and multipoint wireless features. These APIs let apps connect to other Bluetooth devices, enabling TheĪpp framework provides access to the Bluetooth functionality through BluetoothĪPIs. The Android platform includes support for the Bluetooth network stack, whichĪllows a device to wirelessly exchange data with other Bluetooth devices.
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So, for someone who lives aboard but spends most or all of their time at the dock with shore power, my answer is that a crock pot can work well. Tips that apply in one situation - say, someone who spends weekends on a 23′ trailerable boat - won’t necessarily be helpful to a family of 5 going around the world on a 60′ boat. (There are also some who have RVs, tents or just a tiny kitchen.) The common factor is that everyone has a galley of some type!īut all that diversity means that not every “answer” is applicable to everyone’s situation. Readers range from weekend trailer-sailors to those who spend vacations aboard near their home to part-time or commuter cruisers to those working their way around the world as well as those who live aboard full time but don’t necessarily cruise anywhere. I love this, as it points out the diversity of readers here on TBG. The reader, Sharon, went on to explain that they were liveaboards and knew quite a few people in their community that used them. The Instant Pot's warming function is claimed to allow you to keep food warm for up to 24 hours, though our food-safety experts say that after 4 hours of warming, food can begin to lose its flavor.I recently got an email asking what I thought of having a slow cooker (crock pot) on board. The Crock-Pot's keep-warm mode runs for up to 4 hours, though it's easy enough to restart when the time is up. Both the Instant Pot and the Crock-Pot Express Crock stayed in the safe hot-food range during our test's 4-hour time period. Warming: You can cook pasta, for example, on your rangetop, then transfer the food to the multi-cooker and use its warming mode to keep the dish warm for dinner or a party. Using the recipes recommended for each machine, we found that the Instant Pot made slightly thicker yogurt than the Crock-Pot in our tests. Yogurt: Here's where we saw a difference in the two cookers. The Crock-Pot's nonstick cooking surface made cleanup easier than the Instant Pot's uncoated stainless steel. Sautéing: Neither multi-cooker has the power to sear well, so our sauté test-preparing Kung Pao chicken-didn't show much browning compared with chicken cooked on a stovetop. "That's because these cookers use a pressure-steam process, and the lid is locked during cooking, making it difficult to check for your preferred tenderness," Deitrick says. Steamer: Our broccoli-and-carrot medleys turned out a bit mushy. Rice cooker: Both cookers did a fine job cooking 2 cups of brown rice in roughly 45 minutes. Big Green Egg: Ultimate Pulled Pork Face-Off.") In earlier tests, the Instant Pot took a bit longer than pork cooked in a traditional Crock-Pot slow cooker. Slow cooker: The Instant Pot and Crock-Pot Express Crock both served up pulled pork that was tender and delicious after a day's cooking. "If you want ribs to have a crispy crust, you'll need to finish off the ribs after pressure-cooking with a coating of barbecue sauce and bake them in an oven for about 15 minutes," says Bernie Deitrick, the CR test engineer who conducted our multi-cooker tests. Pressure cooker: On pressure-cook mode, both appliances turned out tender baby back ribs in about 54 minutes-much faster than the 2 hours the ribs took in the oven. Here's what we found when we reviewed the cooking modes these appliances have in common. For example, only Netflix TV shows and films that have the HDR or DV icon next to their description can be streamed in HDR. Note that not all content supports HDR or Dolby Vision. To make sure your MacBook plays in HDR mode when using the battery, you also need to go to System Preferences > Battery and uncheck Optimize Video Streaming box. If you’re using a MacBook Pro or MacBook Air in battery mode your Mac may automatically switch to Standard Dynamic Range (SDR). If you have all of the above, you also need to go to System Preferences > Display and make sure that the High Dynamic Range checkbox is checked for your Mac’s display. If you don’t have a fast internet connection, you can still watch HDR at a lower resolution of 1080p. Netflix recommends an internet speed of 15MB/s or higher.You’ll need to make sure you’re using macOS Catalina 10.15.4 or later which you can update via Software Update on your Mac.Make sure you’re using the latest version of the Safari browser which you can update via Software Update on your Mac.Make sure you’ve got a Netflix subscription that includes streaming in Ultra HD.To watch Netflix in HDR on a Mac you’ll need to check the following: HDR only works in the Safari browser and will not work in Firefox, Chrome or Microsoft Edge. Since there is no Netflix app for Macs you have to use a browser to watch Netflix on a Mac. To make sure your Mac is playing in HDR or Dolby Vision requires following the same process whatever service you are using but here we’ll take watching HDR in Netflix on a Mac as an example. Note that only Apple Silicon MacBook Airs support using HDR on external displays though. Specifically, the following Macs support HDR in their built-in displays or when connected to an external monitor that supports HDR: Surprisingly the Apple Studio Display does not support HDR as it only goes up to a maximum of 600 nits (up to 1600 nits is needed for HDR) although the more expensive Apple Pro XDR display supports HDR, Dolby Vision and Hybrid Log Gamma (HLG).Īll Apple Silicon Macs like the M1 MacBook Pro and Mac Studio support HDR and Intel Macs introduced since 2018 support HDR too. So if you’ve got a 4K external monitor for your Mac, it doesn’t necessarily mean it supports Dolby Vision or HDR10 although many external displays such as the excellent LG UltraFine 34 inch do support HDR. HDR10 and Dolby Vision are different to 4K (also known as Ultra HD) which is a high density pixel resolution which provides much greater video detail. Note that not all apps and services support HDR on a Mac such as VLC Player which supports HDR on Windows but not macOS yet. Mac based graphic designers, video editors and other creative design professionals also need HDR support for color accuracy and consistency. The main reason most Mac users want to know how to use HDR on a Mac is for watching streaming services such as Netflix and YouTube but it also means that you can watch video recorded on iPhones in HDR in its full glory. The result is brighter whites and darker blacks with much greater range in between. HDR10 and Dolby Vision are enhancements to color and dynamic range that make video look more realistic with ultravivid colors and sharper contrast. Nowadays, streaming services such as Netflix support High Dynamic Range (HDR) streaming in two main formats: Dolby Vision and HDR10. If you want to know how to watch video in HDR on a Mac, here we show you how to play HDR or Dolby Vision content on a Mac including the latest M1 and M2 Macs and MacBooks. As in the Windows implementation, by default all applications run through the integrated graphics processor. The open-source project Bumblebee tries to provide support for graphics-chip switching. As of May 2013, power management for discrete card is not supported, which means it cannot save battery by turning off Nvidia graphic card completely. The binary Nvidia driver added partial Optimus support in the 319.17. Nvidia's proprietary kernel blob cannot make uses of DMA BUF because of license restrictions. In the middle the free and open-source driver stack consisting of Mesa 3D and libDRM in user-space and DRM/ KMS driver in the Linux kernel. The operation may be hosted in the BIOS, and often require a reboot. Some vendors have provided hardware multiplexer solutions to completely shut off the Optimus architecture. On desktop-replacement or gaming laptops (where performance is prioritized over energy efficiency), Optimus technology has been heavily criticized. Using the IGP to output data from the discrete GPU may become a bottleneck at high framerates. The Optimus Copy Engine is a new alternative to traditional DMA transfers between the GPU framebuffer memory and main memory used by the IGP. Optimus avoids usage of a hardware multiplexer and prevents glitches associated with changing the display driver from IGP to GPU by transferring the display surface from the GPU frame buffer over the PCI Express bus to the main memory-based framebuffer used by the IGP. These can be managed using the Nvidia control panel. Predefined profiles also assist in determining whether extra graphics power is needed. CUDA Calls: CUDA applications will trigger these calls.DXVA Calls: Video playback will trigger these calls (DXVA = DirectX Video Acceleration).DX Calls: Any 3D game engine or DirectX application will trigger these calls.Specifically, it sends a signal to power-on the GPU when it finds any of the following three call types: In this context-management scheme, each application is not aware of other applications concurrently using the GPU.īy recognizing designated classes, the Optimus Routing Layer can help determine when the GPU can be utilized to improve rendering performance. This Nvidia innovation performs state and context management, allocating architectural resources as needed for each driver client (i.e., application). The Optimus Routing Layer also includes a kernel-level library for recognizing and managing specific classes and objects associated with different graphics devices. Within the hardware interface layer of the Nvidia GPU driver, the Optimus Routing Layer provides intelligent graphics management. Under Windows the Nvidia driver also provides the option to manually select the GPU in the right-click menu upon launching an executable. When less demanding applications are used, the IGP takes sole control, allowing for longer battery life and less fan noise. Even in this case, though, the integrated graphics processor (IGP) is used to output the final image. If so, the GPU is powered up from an idle state and is passed all rendering calls. When a user launches an application, the graphics driver tries to determine whether the application would benefit from the discrete GPU. A project called Bumblebee is an alternative open source implementation of Optimus support for Linux. Official supported operating systems by Nvidia are Microsoft Windows and Linux. Switching between the graphics processors is designed to be completely seamless and to happen "behind the scenes". Otherwise the application is served by a rendering context that uses the integrated GPU. When an application is being launched that is determined to benefit from the performance of the discrete GPU, the discrete GPU is powered up and the application is served by a rendering context via that GPU. The technology mainly targets mobile PCs such as notebooks. Optimus saves battery life by automatically switching the power of the discrete graphics processing unit (GPU) off when it is not needed and switching it on when needed again. Nvidia Optimus is a computer GPU switching technology created by Nvidia which, depending on the resource load generated by client software applications, will seamlessly switch between two graphics adapters within a computer system in order to provide either maximum performance or minimum power draw from the system's graphics rendering hardware.Ī typical platform includes both a lower-performance integrated graphics processor by Intel/ AMD and a high-performance one by Nvidia. JSTOR ( March 2010) ( Learn how and when to remove this template message).Please improve this article by adding secondary or tertiary sources. This article relies excessively on references to primary sources. After a few seconds, you will see a confirmation screen.
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