Recent discussions with a number of leading Cable Television broadcasters has indicated a willingness to include 3D capabilities in their role out of digital television services. Such a service would represent a landmark in the evolution of 3D. While this will provide a tremendous stimulation to numerous fledgling 3D industries throughout the world, the development of a digital 3D broadcast architecture that would meet the stringent requirements of the Cable companies will not be a simple exercise. During discussion, the Cable companies proposed the following specification for a digital Cable 3D service: 1) The 3D service must be totally 2D compatible; 2) The fact that 3D is being transmitted should not be detectable by the 2D viewer and not affect the 2D service in any way; 3) No additional bandwidth will be required for the 3D service; 4) The 3D service must be totally compatible with all existing and future 2D systems and equipment; 5) The 3D system must cater for existing stereoscopic display system and future 'multiple view' displays; 6) Unlimited supply of high quality, low cost, 3D material. Additionally, should the 3D service prove to be economically viable then: 7) The service must be capable of being upgraded to accept stereoscopic video images. In the case of 7, then 2D compatibility would not be required and a number of the other restrictions would be relaxed. An architecture that will meet these requirements is described.
Philip V. Harman,
"Architecture for digital 3D broadcasting", Proc. SPIE 3639, Stereoscopic Displays and Virtual Reality Systems VI, (24 May 1999); doi: 10.1117/12.349386; https://doi.org/10.1117/12.349386