Request #: HUTRR37 Title: Aspect Ratio Spec Release: 1.12 Received: 22 September 2009 Requester: Robert Hulvey Company: Broadcom Corp. Phone: +1 310 384 0996 FAX: email: rwhulvey@xxxxxxxxxxxx ----------------- CurrentStatus: Approved Priority: Normal Submitted: 01 December 2009 Voting Starts: 21 January 2010 Voting Ends: 28 January 2010 Required Voter: Broadcom Required Voter: Logitech Required Voter: DisplayLink ---------------- Summary: -------- The proposal is to add new Usage IDs to the Consumer Page (0x0C) to support aspect ratio control in high definition video devices. This function is currently not addressed by the HID usage tables. Background: ----------- Many devices which output or display video offer options to adjust the video signal to various aspect ratios. For example, common aspect ratio options are 4:3 (standard definition), 16:9 (often used to stretch a standard definition source signal to a 16:9 video screen), letter-box and anamorphic widescreen. This HUTRR requests the addition of a usage ID to control this functionality. Proposal: --------- Add the following to section 15, Table 17: Consumer Page Usage ID = 0x6D Usage Name = Aspect Usage Type = OSC Aspect OSC - Selects the next available supported aspect ratio option on a device which outputs or displays video. For example, common aspect ratio options are 4:3 (standard definition), 16:9 (often used to stretch a standard definition source signal to a 16:9 video screen), letter-box and anamorphic widescreen.The order in which the aspect ratios are selected is implementation specific. Change the following to section 15, Table 17: Consumer Page Usage ID = 0x6D-0x7F Usage Name = Reserved To: Usage ID = 0x6E-0x7F Usage Name = Reserved Response: --------- Notes on Approval Procedure: ---------------------------- HID WG On Line Voting Procedures 1. Votes are on a per company basis. 2. Each Review Request shall have attached a Required Voter List that is the result of recruiting by the HID Chair and submitter of members of the USB IF. Required Voter List must include the HID Chair plus 2 companies (other than the submitter) plus any others designated by the HID Chair at the Chair?s discretion. The Required Voter List ensures that a quorum is available to approve the Request. 3. Impose a 7-calendar-day posting time limit for new Review Requests. HID Chair or designate must post the RR within 7 calendar days. HID Chair or designate must work with the submitter to make sure the request is valid prior to posting. Valid review request must include all fields marked as required in the template. A new template will be adopted that requires at least the following fields: Change Text, Required Voter List, Review Period End Date and Voting End Date, Submittal Date, Submitter, Review Request Title and RR Number. 4. If a RR approval process stalls, the HID Chair may call a face-to-face meeting or conference call to decide the issue. Submitter may request that this take place. 5. Impose a minimum 15-calendar-day review period on a posted RR prior to the voting period. At HID Chair discretion, changes to the RR may require this review period to restart. 6. The Chair will accept votes via documentable means such as mail or e-mail during the 7 calendar days after the close of the review period. If a Required Voter does not vote during the period, then there is no quorum and the Chair may pursue the absent required voter and extend the voting period. The Chair may designate a substitute for the absent voter and extend the voting period if necessary.