POSSIBLE Projector Subunits Subsystems and Their Contents Rick
POSSIBLE Projector Subunits (Subsystems) and Their Contents Rick Landau Dell 2006/08/24
Proposal and Examples Only • Suggestions based on model that we discussed last week • Possible contents of the various subunits – Suggestive lists, not exhaustive • Long lists, need to decide later – – What to include in the specs What is mandatory versus optional • Leave room for expansion 2
Need Formal Definitions • We need to define subunits formally – – What are its purpose and content? How it is distinguished from other subunits? • Then define data items within subunits formally – – – Name, contents, semantics, usage – – – How do the agent and the user manipulate it? What shall we call it, in SNMP and Web contexts? What does it contain? How do the agent and the user interpret its contents? Careful to distinguish setting versus state (Probably not precise data syntax, which sometimes depends on the access protocol) 3
Subunits of a Projector • • • • • General information Localization Covers Display Signal Sources Light Source Video Quality Optics Cooling System controller Interfaces Channels Interpreters Console Audio Alerts FRUs 4
General Information • Identification – Manufacturer, model, serial number • Status – – – Power state Age, unit Temperature, unit • Settings – – – Current language for console, SNMP, web server Date, time Power on/off • Current values (may be here or in related groups) – E. g. , video connector in use, video mode, audio source, etc. 5
Localization • Language, region, character set 6
Covers • Description • Status 7
Display • Physical size (for display, not projector): Horizontal, Vertical, unit (Note that Horizontal, Vertical, Width, and Height will be tricky to define, given that the device may be mounted in different positions. ) • Resolution: W pixels, H pixels – Pixel aspect ratio • Color model, color depth, bits • Mounting options: landscape, portrait, upside down • Mounting settings: front/rear, floor/ceiling, landscape/portrait 8
Signal Sources • Video • Audio 9
Light Source • Lamp type, technology, part number for replacement • Status • Age, unit, max age • On/off cycles • Power save mode settings – – – Blanking, standby, off Timeouts, enable/disable No-signal image 10
Video • Current source (here or in General group? ) • Current mode settings – – – Lines, aspect ratio, interlace/progressive Color system Picture mode: Power. Point, photo, video, cinema • Appearance – – – Color temperature Brightness, contrast, gamma Color intensities Saturation, sharpness, tint White intensity Noise reduction • Settings per source – – – Mode H and V position, size Others • Other features – Picture-in-picture, picture-by-picture settings 11
Optics • Focus level – Autofocus enable • Zoom level • Keystoning H and V levels – Autokeystone enable (Again, Horizontal, Vertical, Up, Down, Left, Right need to be defined very carefully) 12
Cooling • Fans – – – Name, location, part number for replacement Status Speed setting, reading 13
System controller • Identification – Firmware versions • Battery backup status • Timer programmed events 14
Interfaces • (Every gezinta, including hand remote control) • Enable/disable • Status 15
Channels • Description • Enable/disable • For protocols spoken on interfaces, e. g. , – – IP parameters: addr, mask, broadcast, DNS, DHCP Wireless parameters: IP, WEP, WPA, radio USB parameters IR port parameters (The combination of interface, channel, and video mode parameters needs a very general data model, not just linear lists of settings. ) 16
Interpreters • Interpreter types available – – E. g. , JPG, PDF Packetized video 17
Console • Buttons – – Description Enable/disable functions for some buttons • Lights – Description, color capabilities • Physical display (e. g. , LCD panel on device) – Contents • On-screen display – Localizable 18
Audio • Current source • Mute, volume, tone, treble, bass, theater sound • Noise reduction 19
Alerts • Log of previous alert conditions • Asynchronous delivery – Methods: traps, email 20
FRUs • Part numbers, and serial numbers if available, for fieldreplaceable units • Subunit ID • Description • Part number • Serial number 21
Additional Questions • Need a clear statements of intellectual property considerations • Example: – This specification includes no information on the subject of patents, trademarks, or licenses. – The presence of a management object does not imply a license to implement a related feature using any particular technology. – All vendors need to submit PWG "Letter of Assurance" stating intellectual property claims and non-claims. 22
Next Steps • Define architectural subunits • Establish a template for specification of a data item • Begin to define data items, starting with easy ones – Examples of MIBs contributed by vendors 23
Next Meeting • Monday, Sept 11 PM (US) / Tuesday, Sept 12 AM (Asia) 24
- Slides: 24