Apple patent involves syncing multiple media streams
TweetFollow Us on Twitter

Apple patent involves syncing multiple media streams

An Apple patent (number 8239748) for a synchronization manager synchronizes multiple media streams. has appeared at the U.S. Patent & Trademark Office. It relates to synchronization of media streams, and more specifically to utilizing clocks on multiple media devices and on a single host to synchronize multiple media streams.

The synchronization manager queries a media stream output device associated with each media stream to synchronize, and in response receives the current device clock time of each device, each device's next available media stream output time, and each device's delta between available media stream output times. The synchronization manager uses this timing information to determine an earliest available media stream output time common to each media stream output device, and synchronizes the output of the media streams by providing each stream to its associated output device at the earliest available common output time.

Here's Apple's background on the invention: "In a multimedia environment, it is often necessary to synchronize multiple streams of data (e.g., a video stream and an audio stream). Although synchronizing video with audio is a common example, such a challenge occurs whenever it is desired to simultaneously output at least two streams of data of any type that is metered by time.

"Although it is desirable to start each stream at the same time, simply simultaneously sending each media stream to its physical output hardware will not necessarily ensure synchronization. Physical output devices typically have constraints binding available output start times. For example, a video output device can only begin outputting received data at the beginning of a vertical synchronization cycle.

"Other devices such as audio are somewhat more flexible, but still have some inherent latency between the time data is received and the subsequent output time. Latency and constraints on possible output start times are a function of the specific hardware, and thus vary a great deal, not only between media types, but also from device to device.

"When the video and audio streams are output by a common device, synchronization can be achieved by the associated device driver delaying the audio output until a vertical synchronization cycle begins, adjusted for the time of the audio output latency. However, this solution only works for a single device. The synchronizing device driver is not aware of other output devices, and the other output devices and their controlling software have no information concerning the operations of the synchronizing device driver.

"What is needed are methods, systems and computer program products that synchronize multiple media streams, even where the media streams are processed by separate devices."

The inventors are Jeff Moore, Jean-michael Berthoud and Tim Cherma.

° Patent number 8239749 is for allowing a graphics object to be expressed using procedural language embedded in a markup language document.

° Patent number 8239867 is for techniques for implementing an atomic FIFO queue and system for processing queue elements.

° Patent number 8238608 is for a computer-implemented method including receiving input specifying an image frame from among a series of image frames, and automatically detecting one or more points in the specified image frame that would be suitable for tracking a point in the series of image frames.

° Patent number 8238831 is for mitigating interference in a mobile wireless communication device by using an estimation of the performance impact of interfering signals generated by a wireless cellular transmitter and received by a co-located Bluetooth receiver.

° Patent number 8238811 is for an authentication controller coupled to a first communication port of a portable media device to provide authentication on behalf of an accessory device coupled to a second communication port of the portable media device.

° Patent number 8238482 is for a technique for performing channel tracking and/or channel estimation in a wireless communication device includes receiving a reference signal and one or more non-error propagation physical channel signals.

° Patent number 8238087 is for the design of a portable computing device that can take many forms such as a laptop computer, a tablet computer, and so on. The portable computing device can include a single piece housing and a display module.

° Patent number 8237087 is for methods for operating a built-in digital camera of a portable, handheld electronic device.

° Patent number 8238893 is for techniques for controlling a portable media device having a radio frequency tuner. (Think the iPod nano).

° Patent number 8239153 is for dynamic compass calibration in a portable device.

° Patent number 823504 is for systems, methods and computer readable media for synchronization of electronic message accounts.

° Patent number 8239605 is for an interface and protocol that allow a media player to communicate with external accessories over a transport link.

° Patent number 8239605 is for allowing a host device and an accessory to exchange information (e.g., commands and data) via an intermediate device.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

LibreOffice 4.4.3 - Free, open-source of...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
FoldersSynchronizer 4.2.1 - Synchronize...
FoldersSynchronizer is a popular and useful utility that synchronizes and backs-up files, folders, disks and boot disks. On each session you can apply special options like Timers, Multiple Folders,... Read more
Simon 4.0.2 - Monitor changes and crashe...
Simon monitors websites and alerts you of crashes and changes. Select pages to monitor, choose your alert options, and customize your settings. Simon does the rest. Keep a watchful eye on your... Read more
Cocktail 8.1.2 - General maintenance and...
Cocktail is a general purpose utility for OS X that lets you clean, repair and optimize your Mac. It is a powerful digital toolset that helps hundreds of thousands of Mac users around the world get... Read more
Cyberduck 4.6.4 - FTP and SFTP browser....
Cyberduck is a robust FTP/FTP-TLS/SFTP browser for the Mac whose lack of visual clutter and cleverly intuitive features make it easy to use. Support for external editors and system technologies such... Read more
Herald 5.0.2 - Notification plugin for M...
Note: Versions 2.1.3 (for OS X 10.7), 3.0.6 (for OS X 10.8), and 4.0.8 (for OS X 10.9) are no longer supported by the developer. Herald is a notification plugin for Mail.app, Apple's Mac OS X email... Read more
DEVONthink Pro 2.8.3 - Knowledge base, i...
Save 10% with our exclusive coupon code: MACUPDATE10 DEVONthink Pro is your essential assistant for today's world, where almost everything is digital. From shopping receipts to important research... Read more
Boom 2 1.0.1 - System-wide pro audio app...
Boom 2 is a system-wide volume booster and equalizer app that is designed especially for OS X 10.10 Yosemite. It comes with a smart interface, self-calibrates itself according to your Mac, offers... Read more
Apple Security Update 2015-001 - For OS...
Apple Security Update 2015-001 is recommended for all users and improves the security of OS X. For detailed information about the security content of this update, please visit: http://support.apple.... Read more
Drive Genius 4.0.1 - Powerful system uti...
Drive Genius 4 gives you faster performance from your Mac while also protecting it. The award-winning and improved DrivePulse feature alerts you to hard drive issues before they become major problems... Read more

Unlock Sunshine Girl in Ironkill with th...
Unlock Sunshine Girl in Ironkill with this special 148Apps code Posted by Rob Rich on January 29th, 2015 [ permalink ] Robo-fighter Ironkill has been out on iOS a | Read more »
Crossroad Zombies Review
Crossroad Zombies Review By Jordan Minor on January 29th, 2015 Our Rating: :: CROSSWALKING DEADiPad Only App - Designed for the iPad Crossroad Zombies is a rough draft of a cool genre mash-up.   | Read more »
Blood Brothers 2 – Tips, Cheats, and Str...
War is hell: Is it the kind of hell you want to check out? Read our Blood Brothers 2 review to find out! Blood Brothers 2, DeNA’s follow-up to the original Blood Brothers, is an intriguing card collecting / role-playing / strategy hybrid. There’s... | Read more »
Blood Brothers 2 Review
Blood Brothers 2 Review By Nadia Oxford on January 29th, 2015 Our Rating: :: AN AGGRAVATING RELATIVEUniversal App - Designed for iPhone and iPad Blood Brothers 2 is built on a simple, solid foundation, but its free-to-play system... | Read more »
I AM BREAD, the Toast of the Town, is Ro...
Have you ever dreamt of being deliciously gluten-y? Do you feel passionate about Rye and Wheat? The guys at Bossa Studios do and that is why they are bringing I AM BREAD to iOS soon. The loafy app will feature all the new content that is being... | Read more »
Fahrenheit: Indigo Prophecy Remastered R...
Fahrenheit: Indigo Prophecy Remastered Review By Jennifer Allen on January 29th, 2015 Our Rating: Universal App - Designed for iPhone and iPad 10 years after its initial release and Fahrenheit: Indigo Prophecy still feels like a... | Read more »
Evolve: Hunters Quest is a Match-3 That...
Evolve: Hunters Quest is a Match-3 That Has You Hunting Up Some Big Game. Posted by Jessica Fisher on January 29th, 2015 [ permalink ] | Read more »
Destructamundo Review
Destructamundo Review By Jordan Minor on January 29th, 2015 Our Rating: :: WRECKING CREWUniversal App - Designed for iPhone and iPad Destructamundo blows up real good.   | Read more »
The Sandbox Gets Exclusive Update, Adds...
The Sandbox Gets Exclusive Update, Adds Invincible Characters Campagin Posted by Tre Lawrence on January 29th, 2015 [ permalink ] | Read more »
Mean Girls: The Game Review
Mean Girls: The Game Review By Jordan Minor on January 29th, 2015 Our Rating: :: FETCHUniversal App - Designed for iPhone and iPad A Mean Girls tower defense game makes way more sense than you’d think.   | Read more »

Price Scanner via MacPrices.net

Back in stock: Refurbished iPod nanos for $99...
The Apple Store has Apple Certified Refurbished 16GB iPod nanos available for $99 including free shipping and Apple’s standard one-year warranty. That’s $50 off the cost of new nanos. Most colors are... Read more
New Good Management Suite Simplifies Enterpri...
Good Technology has announced the availability of the Good Management Suite, a comprehensive cross-platform solution for organizations getting started with mobile business initiatives. Built on the... Read more
15-inch 2.0GHz Retina MacBook Pro (refurbishe...
The Apple Store has Apple Certified Refurbished previous-generation 15″ 2.0GHz Retina MacBook Pros available for $1489 including free shipping plus Apple’s standard one-year warranty. Their price is... Read more
15-inch 2.5GHz Retina MacBook Pro on sale for...
Amazon has the 15″ 2.5GHz Retina MacBook Pro on sale for $2319.99 including free shipping. Their price is $180 off MSRP, and it’s the lowest price available for this model from any reseller. Read more
iPad Turns Five – The ”Book Mystique
Five years ago this week, the late Steve Jobs took the stage at an Apple special press event to unveil the first Apple iPad — a slab-shaped, hand-holdable device that was to shake the personal... Read more
Sale! 15-inch Retina MacBook Pros for up to $...
B&H Photo has the new 2014 15″ Retina MacBook Pros on sale for $150 off MSRP for a limited time. Shipping is free, and B&H charges NY sales tax only: - 15″ 2.2GHz Retina MacBook Pro: $1889.99... Read more
Apple refurbished Mac minis for up to $150 of...
The Apple Store has restocked Apple Certified Refurbished 2014 Mac minis, with models available starting at $419. Apple’s one-year warranty is included with each mini, and shipping is free: - 1.4GHz... Read more
Apple Releases New Tranche Of OS Updates For...
Apple has released incremental bugfix and security updates for its most recent Mac and iOS versions. OS X Yosemite 10.10.2 Update Apple says this update includes the following improvements: Resolves... Read more
Samsung To Be Main Supplier Of A9 Chips For i...
Korea’s Maeil Business Newspaper reports that Samsung has beat out its chipmaking rivals, Taiwan’s Qualcomm and TSMC, as supplier of chipsets for the next generations of both its own Galaxy S6 and... Read more
Save up to $340 on iMacs with Apple Certified...
The Apple Store has Apple Certified Refurbished iMacs available for up to $340 off the cost of new models. Apple’s one-year warranty is standard, and shipping is free. These are the best prices on... Read more

Jobs Board

SW QA Engineer - *Apple* TV - Apple (United...
**Job Summary** The Apple TV team is looking for experienced Quality Assurance Engineers with a passion for delivering first in class home entertainment solutions. **Key Read more
*Apple* Retail - Multiple Positions(US) - Ap...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you re also the Read more
*Apple* Systems Engineer - Pre Sales, Educat...
…is responsible for proactively providing technical expertise to drive sales of Apple solutions into assigned accounts. The SE architects, validates, and assists in Read more
*Apple* Solutions Consultant - Retail Sales...
As an ambassador of the Apple brand, the ASC is accountable for driving sales performance by: Connecting with customers. Discovering customers' needs and values. Showing Read more
*Apple* Solutions Consultant - Retail Sales...
As an ambassador of the Apple brand, the ASC is accountable for driving sales performance by: Connecting with customers. Discovering customers' needs and values. Showing Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.