Digital Video Camera (DVC)

Block diagram (SBD) for an HD Digital Video Camera (DVC) / Camcorder that can record and play back full-motion video/audio, with image/video stabilization, and high-quality video output

Block Diagram

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Power: AC/DC Supply

Design Considerations

Over the last few years, digital still (DSC) and video (DVC) cameras have become more and more sophisticated enabling advanced features including noise filtering, instant red-eye removal, extracting prints from video, image and video stabilization, in-camera editing, wireless transmission, and remote control. All while driving a roadmap of integration. Modern DVC tend to adopt Li Ion batteries instead of Alkaline, due to size/weight and charge cycle lifetime. CMOS sensors have become the imaging solution choice for motion capture.

Some common things to consider in the DVC design are:

Power: A high PSRR LDO is needed for CMOS sensor. It is important to look at the PSRR value at critical frequencies, mostly within the DC/DC regulator's frequency level (1MHz~3MHz), since this is the main noise generated in system. Additionally, A low IQ LDO is required for the RTC power supply, Low IQ is a must in order to extend the DVC standby time.

Low IQ and high efficiency are important features in the DC/DC regulators used, in order to maximize the battery life and run time. If not already integrated into the Audio solutions used, boost converters are used to supply 5V (typical) to audio amplifier, enabling a constant output volume across the entire charge range of the battery. Selecting a low IQ Audio Codec for audio recording/playback, as well class D amplifiers for the audio solution can also increase playback runtime.

As wit most battery applications, a simple battery charger will be required. Leveraging battery management solutions with Dynamic Power-Path management will allow the DVC to record and playback while the battery is being charged. Similarly, using gas gauge solutions that support impendence tracking will extend the DVC runtime by more accurately calculating the usable energy left in the battery.

DVCs use an LCD display to verify what is in frame while recording, and as the primary play-back mechanism. If not integrated into the LCD Panel driver, LED backlight will be needed. Many DVCs today also support touch screen control on the LCD display in order to minimize the number of additional controls needed on the camera, and assist with in-camera editing. For higher end models supporting static image camera, a Xeon Flashlight driver may also be required.

TI's portfolio includes power, audio and video signal chain, and processing solutions that allow users the flexibility to meet the performance requirements of their current and future product needs.

Application Notes (8)

Title Abstract Type Size (KB) Date Views
HTM 8 KB 02 Jun 2011 237
HTM 8 KB 16 Jul 2010 86
HTM 9 KB 27 Jan 2010 309
HTM 9 KB 11 Nov 2009 105
HTM 8 KB 12 Jun 2009 121
HTM 8 KB 19 Nov 2008 672
HTM 9 KB 03 May 2004 699
HTM 9 KB 07 Mar 2000 94
    

Selection and Solution Guides

Selection Guides (4)

Title Abstract Type Size (KB) Date Views
PDF 2.78 MB 25 Jun 2014 27185
PDF 9.51 MB 01 May 2014 50279
PDF 2.55 MB 10 Oct 2013 4232
PDF 4.16 MB 23 Jul 2009 4628

Solution Guides (1)

Title Abstract Type Size (KB) Date Views
PDF 5.83 MB 26 Jan 2014 12499

Tools and Software

Name Part # Company Software/Tool Type
Code Composer Studio (CCS) Integrated Development Environment (IDE) CCSTUDIO Texas Instruments SW Development Tools, IDEs, Compilers
TMS320C64x Image Library SPRC094 Texas Instruments Software Libraries
TMS320DM355 Digital Video Evaluation Module TMDSEVM355 Texas Instruments Development Kits

Product Bulletin & White Papers

Product Bulletin (1)

Title Abstract Type Size (MB) Date Views
PDF 216 KB 03 Sep 2014 359

White Papers (14)

Title Abstract Type Size (MB) Date Views
PDF 1.09 MB 12 Nov 2012 570
PDF 652 KB 09 Oct 2012 413
PDF 94 KB 16 Jun 2011 196
HTM 9 KB 18 Jul 2008 73
PDF 58 KB 01 Feb 2008 232
PDF 263 KB 10 Oct 2007 790
PDF 94 KB 10 Oct 2007 222
PDF 358 KB 19 Sep 2007 151
PDF 124 KB 28 Mar 2007 242
PDF 470 KB 20 Mar 2007 3
HTM 8 KB 25 Oct 2006 58
PDF 70 KB 06 Dec 2005 4
PDF 56 KB 08 Sep 2005 286
PDF 55 KB 08 Sep 2005 264

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