POSSIBLE Projector Subunits (Subsystems) and Their Contents Rick Landau, Dell, and Projector & Display Management BOF 2006/09/13

2 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

3 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 – What shall we call it, in SNMP and Web contexts? – What does it contain? How do the agent and the user interpret its contents? – How do the agent and the user manipulate it? – Careful to distinguish setting versus state – (Probably not precise data syntax, which sometimes depends on the access protocol)

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5 Scope What's in, what's out What functions, e.g., management rather than discovery (Management of discovery protocols, e.g., disabling UPnP)

6 Subunits of a Projector General information Localization Interlocks Display - HM & KA Light Source - HM & KA Video Quality - HM & KA Optics - RBL Thermal Management – Fans – Filters – Temperature sensors System controller - RR Interfaces - RR Transports Capabilities - RR Interpreters & Codecs - RR Console Audio Alerts FRUs

7 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 status values (may be here or in related groups) – E.g., video connector in use, video mode, audio source, etc.

8 Localization Language, region, character set If this group is absent, assume English

9 Interlocks Description Status

10 Display Capabilities 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

11 Signal Sources Video Audio

12 Light Source Lamp type, technology, part number for replacement – Multiple lamps for some DLPs – Even backlighting is replaceable in LCDs – Replaceable modules of LEDs – Maybe multiple part numbers for a single item (e.g., different brightnesses) Status Age, unit, max age On/off cycles Power save mode settings – Blanking, standby, off (may need careful wording to avoid submarine patents) – Timeouts, enable/disable – No-signal image

13 Current Video State Current source (here or in General group? Probably general) Input color space: 4-2-2, input sync polarity, H and V frequencies, HxV pixels, aspect ratio, Interlace/progressive, color system Part of current profile – Current mode settings Picture mode: PowerPoint, photo, video, cinema Maintain aspect ratio? Stretch, crop, squeeze modes – Appearance Color temperature Brightness, contrast, gamma (more than one parameter, choice of curve from set, separate curves per color) –Optional to protect trade secrets Color intensities Saturation, sharpness, tint White intensity Noise reduction H and V position, size closed captioning, dynamic color balance for colored targets (move to installation settings)

14 Saved Profiles per Source All the same attributes as the current state, including – Mode – Others (on previous page) Other features not stored in profile (move this) – Picture-in-picture, picture-by-picture settings

15 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)

16 Thermal Management Group Fans Filters Temperature sensors

17 Fans – Name, location, part number for replacement, replacement cycle – Status – Speed setting, reading, maybe very coarse measurements – Maybe thresholds for speeds

18 Filters – Name, location, part number for replacement – Age, unit, replacement cycle

19 Temperature and other thresholds – Multiple – Simple sensors or scalar settings

20 System controller Battery backup status Timer programmed events Multiple controllers – Identification Firmware versions Upgradeable? – Controller status or errors, esp. for subcontrollers History

21 Interfaces (Every connector, including hand remote control) Enable/disable – Including power switch Status

22 Transport Mechanisms XXXX Description Enable/disable For protocols spoken on interfaces, e.g., – IP parameters: addr, mask, broadcast, DNS, DHCP – Wireless parameters: IP, WEP, WPA, wi-fi radio – USB parameters – IR format – Serial line protocols May need to include multiple entries in the network stack, e.g., IP and HTTP, MMS, RealMedia, etc. (The combination of interface, channel, and video mode parameters needs a very general data model, not just linear lists of settings.)

23 Transport Capabilities (examples only, not exhaustive) Interfaces physical interface, e.g., ethernet enable/disable Transports ISO layer 2, e.g., IP, wireless appropriate parameters Session protocols RealMedia, Windows Media, SIP, RTTP HTTP, RDP enable/disable Payload formats (codecs) MPEGs, JPG, PDLs (Associations come later)

24 Interpreters, Codecs Interpreter types available – E.g., JPG, PDF – Packetized video – MPEG Capabilites, interactions between content, transport, connector

25 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

26 Audio Current source Settings: mute, volume, tone, treble, bass, theater sound, noise reduction

27 Alerts Log of previous alert conditions Asynchronous delivery – Methods: traps, , SMS, pager Enable/disable classes of alert conditions Overflow management discipline: ring buffer, aging, etc.

28 FRUs (Field Replaceable Units) Part numbers, and serial numbers if available, for field- replaceable units Subunit ID Description Part number Serial number Customer replaceable? Training level maybe.

29 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 should submit PWG "Letter of Assurance" stating intellectual property claims and non-claims.

30 Next Steps Describe use cases for management of projectors and displays 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

31 Next Meeting Concall Monday, Sept 25 PM (US) / Tuesday, Sept 26 AM (Asia)

32 Use Cases Basic asset inventory: what do I have installed, what spare parts do I need to stock? ND Predict consumption of spares: how old are the lamps, filters, when will they need replacement? ND Restore device to its default setup. RBL Read the setup of the device to establish default. RBL Restore device to profile appropriate to next usage, depends on customer. RM Turn device on/off based on hours of operation. RR Turn projector off every night to save power and lamp. RR Predict usage of consumables based on environmental history, e.g., humidity, dust. HM Does the firmware need updating? Alert condition, send out person with right training and parts in hand.

33 Representational Considerations Guideline: If a management application will make decisions based on a piece of data, then the data must be rigidly structured. – Integers instead of strings for numeric values – Enumerated values where possible Need careful description of repeating groups of properties versus multi-valued properties