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products:audio-video:analoghdmidvi-interfaces:adv8005:app-notes:combining-multiple-adv8005 [14 Mar 2016 23:42] – Dominic Berniqueproducts:audio-video:analoghdmidvi-interfaces:adv8005:app-notes:combining-multiple-adv8005 [15 Mar 2016 20:05] (current) – Dominic Bernique
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-====== APPLICATIONS COMBINING MULTIPLE ADV8003/ADV8005 DEVICES ======+====== Applications combining multiple ADV8005 devices ======
  
  
-Some applications can combine multiple ADV8003 or ADV8005 devices to achieve functionality that would not be possible with a single device. This section gives some examples of those possibilities, and makes some recommendations for best system performance.+Some applications can combine multiple  ADV8005 devices to achieve functionality that would not be possible with a single device. This section gives some examples of those possibilities, and makes some recommendations for best system performance.
  
 Example application: Example application:
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 This is a mode where the output timing can be fractionally locked (to an accuracy of a few clock cycles) to the VS timing of the input video, even if the output resolution differs from the input resolution. Additionally, if desired, a user-programmable delay can be added from input to output timing. This is a mode where the output timing can be fractionally locked (to an accuracy of a few clock cycles) to the VS timing of the input video, even if the output resolution differs from the input resolution. Additionally, if desired, a user-programmable delay can be added from input to output timing.
  
-**Advantages:** As output and input timing are locked, it will never be necessary to drop or repeat frames of the output video. This ensures that if there is a scene change on the input, it will appear at the same time on all ADV8003 devices which are being driven by it. +**Advantages:** As output and input timing are locked, it will never be necessary to drop or repeat frames of the output video. This ensures that if there is a scene change on the input, it will appear at the same time on all ADV8005 devices which are being driven by it. 
  
 **Disadvantages:** When the input changes resolution or frame rate, the output timing may be temporarily disturbed as the new input is acquired.  **Disadvantages:** When the input changes resolution or frame rate, the output timing may be temporarily disturbed as the new input is acquired. 
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 ====== USE CASES ====== ====== USE CASES ======
  
-===== Star Connected ADV8003/ADV8005 Devices =====+===== Star Connected ADV8005 Devices =====
  
 This is typical of some video wall or signage applications. One source signal is sent through a splitter to multiple ADV8005 devices in multiple sinks. Each ADV8005 crops a portion of the image and upscales it to full-screen. For example, using 4 ADV8005 devices, each one processes top-left, top-right, bottom-left or bottom-right of the image and upscales it to full-screen. Outputs are not combined; they each drive their own display.  This is typical of some video wall or signage applications. One source signal is sent through a splitter to multiple ADV8005 devices in multiple sinks. Each ADV8005 crops a portion of the image and upscales it to full-screen. For example, using 4 ADV8005 devices, each one processes top-left, top-right, bottom-left or bottom-right of the image and upscales it to full-screen. Outputs are not combined; they each drive their own display. 
  
 The requirement is that a scene change happening on the input will appear to the human eye to happen at the same time on all of the ADV8005 outputs. The requirement is that a scene change happening on the input will appear to the human eye to happen at the same time on all of the ADV8005 outputs.
 +
  
  {{ :products:audio-video:analoghdmidvi-interfaces:adv8005:app-notes:adv8005pic1.png?600 |}}  {{ :products:audio-video:analoghdmidvi-interfaces:adv8005:app-notes:adv8005pic1.png?600 |}}
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-Best solution: Use ADV8003 or ADV8005 in frame locked mode.+Best solution: Use ADV8005 in frame locked mode.
  
-===== Daisy-Chained ADV8003/ADV8005 Devices =====+===== Daisy-Chained ADV8005 Devices =====
  
 This is typical of some video wall or signage applications. One source signal is sent to ADV8005 devices in multiple sinks. They are connected in daisy-chain fashion. Each ADV8005 crops a portion of the image and upscales it to full-screen and outputs that on its output port. On its other output port, it passes through the input to the next ADV8005 device in the chain. For example using 4 ADV8005 devices, each one processes top-left, top-right, bottom-left or bottom-right of the image and upscales it to full-screen. Outputs are not combined; they each drive their own display.  This is typical of some video wall or signage applications. One source signal is sent to ADV8005 devices in multiple sinks. They are connected in daisy-chain fashion. Each ADV8005 crops a portion of the image and upscales it to full-screen and outputs that on its output port. On its other output port, it passes through the input to the next ADV8005 device in the chain. For example using 4 ADV8005 devices, each one processes top-left, top-right, bottom-left or bottom-right of the image and upscales it to full-screen. Outputs are not combined; they each drive their own display. 
products/audio-video/analoghdmidvi-interfaces/adv8005/app-notes/combining-multiple-adv8005.txt · Last modified: 15 Mar 2016 20:05 by Dominic Bernique

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