Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revision | |
| products:audio-video:analoghdmidvi-interfaces:adv7625:osd:graphics-capabilities-for-fbox-tbox-ibox [03 Feb 2021 22:24] – David Dashefsky | products:audio-video:analoghdmidvi-interfaces:adv7625:osd:graphics-capabilities-for-fbox-tbox-ibox [01 Mar 2021 14:55] (current) – David Dashefsky |
|---|
| ====== Overview ====== | ====== Overview ====== |
| |
| The ADV7625/ADV7626/ADV7627 offer a simple low cost on screen display for video overlay on HDMI. The hardware implementation uses Text boxes ( Tbox), filled boxes ( Fbox) and icon boxes (Ibox) to create basic text based OSD overlay. The hardware offers a 16x16 resolution for text characters with ability to scale from 1 to 15 using pixel repetition. The pixel repetition in most cases does not provide good quality text as a result. The [[ez>docs/DOC-10635| Blimp OSD Designer software tool]] abstracts the drawing hardware components and optimizes their use by treating them all as graphic components that can display both images or text and can span across multiple 16x16 boundaries in the case of Tboxes to create larger high quality fonts. On larger resolutions like 1080p and 4k, a compromise will usually have to be made between limiting OSD content or using scaling to have more content but with lower resolution. | The ADV7625/ADV7626/ADV7627 offer a simple low cost on screen display for video overlay on HDMI. The hardware implementation uses Text boxes ( Tbox), filled boxes ( Fbox) and icon boxes (Ibox) to create basic text based OSD overlay. The hardware offers a 16x16 resolution for text characters with ability to scale from 1 to 15 using pixel repetition. The pixel repetition in most cases does not provide good quality text as a result. The Blimp OSD Designer software tool abstracts the drawing hardware components and optimizes their use by treating them all as graphic components that can display both images or text and can span across multiple 16x16 boundaries in the case of Tboxes to create larger high quality fonts. On larger resolutions like 1080p and 4k, a compromise will usually have to be made between limiting OSD content or using scaling to have more content but with lower resolution. |
| |
| This application note details the capabilities of the ADV7625 OSD as implemented in Blimp. with these guidelines, user can plan the graphic and text layout of each pages for their OSD design. | This application note details the capabilities of the ADV7625 OSD as implemented in Blimp. with these guidelines, user can plan the graphic and text layout of each pages for their OSD design. |
