Big Players in Digital Signage

Here is a list of companies that supply digital signage, make technology used in digital signage or have related patents or technology. This list is incomplete and somewhat random. It was created in a session of googling

Cisco

Thomson PRN (France)
Google???
Eye Corp owned by a media company, Network 10 Australia
3M (India)
EnQii
Broadsign
C-nario from Israel
YCD has audience measurement
ScreenRed
Scala (USA) Digital Signage software from Scala creates, manages, and distributes electronic content to networks of digital displays that are centrally managed and addressable for targeted information, entertainment, merchandising, and advertising.
Remotemedia (UK) SaaS (Software as a Service) web based Digital Signage Platform enabling 1,000's of companies worldwide across all business sectors to benefit from the power of digital media communication.
TELentice We provide dynamic digital media content management solutions for enterprise-level organizations operating in the in-store retail and “Out-of-Home” setting. TELentice software is currently managing in excess of 10,000 digital displays in retail stores, public transit venues and convenience stores
Stratacache ... distributes digital content to thousands of sites simultaneously. The latest generation of award-winning caching, content acceleration, and application acceleration products by the leader in advanced content and application technology and media distribution.
chyTV equipment distributor
Applica kiosks, digital walls
Synnex equipment distributor
Coraa (USA) Integrator
Magic Boxl (Corvalis, Oregon) integrator
Digital Display Group (Minnesota) integrator
MTI Iinteractive (Portland Oregon)

Tightrope Media Systems (Minnesota) Web software, hardware

AGN|PRO Hardware

TTSS (USA) Hardware

Packet TV/ (USA) Integrator

Wallflower Global.com (NZ) Management software?

Neo Advertising (Europe)
AdWalker
Motomedia.
Quividi  interactive with  USB cameras and face tracking.
Dagobert (Europe) Content provider
DeMeedya (Turkey) Owners of Pharmacy Channel.
Screen Technology (UK) Hardware 
Reactrix
MultiQ ( S
http://www.cognovision.com/solutions.php
http://techon.nikkeibp.co.jp/english/NEWS_EN/20080722/155163/
http://www.netkey.com/products/analytics.htm
http://www.openeyeglobal.com/
Barco (Belgium) Hardware


Factors Driving Industry

European Digital Signage Market To Hit US$1B By 2012
Walmart: In Store Media is the Most Important Channel

Is_Wal_Mart_s_in_store_TV_network_really_more_effective_than_TV
Retail_media_measurement__can_stores_become_a_mass_medium

Content owners always winor do they?

Further Reading

Daily DOOH's Top 10 Digital Signage Vendors (December 2007)

Daily DOOH's Top 10 Companies to Watch in 2008