China Film Giant Screen

China Film Giant Screen (CFGS) is a Chinese premium large film format company. The company was previously known as DMAX, with the name also referring to the film technology. It has been described as a competitor to IMAX Corporation and its IMAX film format.[1] The company is owned by China Film Group Corporation.


The CFGS format was apparently developed by the China Research Institute of Film Science & Technology and the China Film Group Corporation. It was created in an attempt to challenge the IMAX film format that dominated the premium large format movie market until that point.[2] The aim was to lower costs and to allow the development of Chinese film projection technology using indigenous Chinese technology and intellectual property.[1]

The format was put into commercial use in 2012.


IMAX sued CFGS and related companies for theft of intellectual property; this court action was heard on 18 June 2014.[3] IMAX alleged that Gary Tsui, a former employee that worked for IMAX from 1999-2009, stole confidential information on proprietary technology and set up competing businesses.[4][5][6] Despite a court injunction it was noted that Gary Tsui had ignored the court orders, and his businesses had evolved into a venture known as DMAX, later to change its name to CFGS. In 2014 IMAX won a court victory in Canada upholding that Tsui had stolen the technology to build up his competing company.[7] IMAX hoped that the Canadian court victory would allow successful legal action in China.[7] As of 2015, the status of the legal action in China is uncertain.

Technical properties

Standard screen size for DMAX is 20x12 meters (for comparison IMAX is at least 22x16 meters).

See also


  1. ^ a b Coonan, Clifford (13 April 2012). "China bows own version of Imax". Variety. Retrieved 15 April 2012.
  2. ^ Yihang (9 April 2012). "Makers of DMAX Aim to Break IMAX Monopoly". Retrieved 15 April 2012.
  3. ^ "IMAX Corp. v. Trotum Systems Inc., 2014 ONSC 3863 (CanLII)". Canadian Legal Information Institute. Ontario Superior Court of Justice/Canadian Legal Information Institute. 2014-07-03. Retrieved 13 December 2015.
  4. ^ Prochilo, Dan (13 August 2013). "Imax Sues Movie Theater Tech Co. Over Trade Secrets". Law360. Retrieved 12 December 2015.
  5. ^ Kearn, Rebekah (28 June 2013). "IMAX Says Trade Secrets Ended Up in China". Courthouse News Service. Retrieved 12 December 2015.
  6. ^ Quigley, J.T. (3 February 2014). "RoboCop 3D and the Battle over Bigger Big Screens in China". The Diplomat. Retrieved 12 December 2015.
  7. ^ a b Kauth, Glenn (14 July 2014). "IMAX wins $7-million victory against ex-employee who stole technology". Canadian Lawyer. Retrieved 13 December 2015.

External links


CFGS may refer to:

CFGS-DT - a Canadian French language television station

China Film Giant Screen - a Chinese premium large film format company

Churston Ferrers Grammar School


DMAX may refer to:

DMAX (engines), of Moraine, Ohio, a joint venture between General Motors and Isuzu Motors, a manufacturer of Diesel engines for trucks

DMAX (TV channel), a German TV channel focused on men, owned by Discovery Communications

DMAX (UK TV channel), a British TV channel owned by Discovery Communications

DMAX (Italy), an Italian TV channel owned by Discovery Communications

DMAX (Spain), a Spanish TV channel owned by Discovery Communications

DMAX (Asia), an Asian TV channel owned by Discovery Communications

DMAX (MENA TV channel), a pan-Arabic TV channel owned by Discovery Communications

Dmax (scanners), a measure of the darkest area of an image that can be scanned by a computer scanner and still show detail

Isuzu D-Max, a pickup truck produced by Isuzu

Dmax, Maximum point dose to an organ or tumor target in radiotherapy cancer treatment.

D-max: Maximum density. The greatest density in an image. Also, the greatest density possible for a particular film or paper. (D-min = Minimum density. The smallest density in an image. Also, the smallest density possible for a particular film or paper.)

China Film Giant Screen - a premium large film format company, previously known as DMAX

Format war

A format war describes competition between mutually incompatible proprietary formats that compete for the same market, typically for data storage devices and recording formats for electronic media. It is often characterized by political and financial influence on content publishers by the developers of the technologies. Developing companies may be characterized as engaging in a format war if they actively oppose or avoid interoperable open-industry technical standards in favor of their own.

A format war emergence can be explained because each vendor is trying to exploit cross-side network effects in a two-sided market. There is also a social force to stop a format war: when one of them wins as de facto standard, it solves a coordination problem for the format users.

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