Electronic Visualization for the Next Century

Pete-Head-Shot-JULY-2012
  • HDMI 2.1 Update – Pretty Much Status Quo

    November 20, 2018

    Last Thursday, a joint press conference was held in New York City by the HDMI Licensing Administrator to update attendees on the latest version of HDMI – version 2.1. V2.1, which was officially announced at CES in 2017, represents a quantum leap over earlier versions. It’s the first HDMI architecture to use a packet-based signaling structure, unlike earlier versions that employed transition-minimized differential signaling (TMDS). By moving to a packet transport (an architecture which V 2.1 apparently borrowed a lot from DisplayPort, according to my sources), the maximum data rate could be expanded several-fold from the previous cap of 18 gigabits per second (Gb/s) to a stratospheric 48 Gb/s. What’s more, the clock reference can now travel embedded in one of the four lanes. Previously, HDMI versions up to 2.0 were limited to three signal lanes and one clock lane. And of course, a digital packet-based signal stream lends itself well to compression, accomplished with VESA’s..Read more

Ken---cropped
  • Useful Gadgets: TiVo BOLT OTA

    October 2, 2018

    I’ve been a long-time fan of TiVo, going back to my first Model 1 in 1999 – almost 20 years ago. That product, manufactured by Philips, used a dial-up connection to get program guide data and recorded about 14 hours maximum of analog composite video. How times have changed! I replaced the first model with the TiVo HD in 2006, installing (and constantly fidgeting with) a pair of CableCards so I could get everything to work with my Comcast service. Various other solutions were out into place to record over-the-air (OTA) programs over the past decade, and along the way, the TiVo HD gave way to an xFinity DVR (manufactured by Samsung), adding a satellite (slave) receiver for the master bedroom. This is likely the only house in my neighborhood which has both cable TV service and a bevy of roof-top and attic antennas, a combination that didn’t make sense to my neighbors until Hurricane Sandy blew ashore in 2012 and the high winds it generated took down a 75’-tall oak tree nearb..Read more