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Two stage synchronous controlling method for multi-player digital film playing system

A technology of digital cinema and synchronous control, applied to components of TV systems, multiple digital computer combinations, TVs, etc., can solve problems that have not been discovered yet, and achieve the effect of strong presence, majestic momentum and grand scenes

Inactive Publication Date: 2007-12-26
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Two stage synchronous controlling method for multi-player digital film playing system
  • Two stage synchronous controlling method for multi-player digital film playing system
  • Two stage synchronous controlling method for multi-player digital film playing system

Examples

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Embodiment 1

[0014] What present embodiment adopted is a digital ring-screen movie player. The system includes 9 identical high-definition digital movie players 4 and a synchronous controller 1 . The synchronous controller 1 and nine high-definition digital movie players 4 are connected to the same Ethernet hub through their respective Ethernet interfaces. The Ethernet cable and the Ethernet hub constitute the communication link 2 between the central controller and the nine high-definition digital movie players 4 . The synchronous signal transmission circuit 3 connects the synchronous controller 1 and the high-definition digital movie player 4 by means of LVDS. The synchronous controller 1 transmits a periodic clock signal and a synchronous trigger signal to any high-definition digital movie player 4 through the synchronous signal transmission circuit 3 . Each high-definition digital movie player 4 uses the periodic clock signal as a reference to generate a local display reference clock ...

Embodiment 2

[0029] What present embodiment adopted is a digital ring-screen movie player. The system includes 9 identical high-definition digital movie players 4 and a synchronous controller 1 . The synchronous controller 1 and nine high-definition digital movie players 4 are connected to the same Ethernet hub through their respective Ethernet interfaces. The Ethernet cable and the Ethernet hub constitute the communication link 2 between the central controller and the nine high-definition digital movie players 4 . The synchronous signal transmission circuit 3 connects the synchronous controller 1 and the high-definition digital movie player 4 by means of LVDS. The synchronous controller 1 transmits only one synchronous trigger signal to any high-definition digital movie player 4 through the synchronous signal transmission circuit 3 . Each high-definition digital cinema player 4 independently generates a local display reference clock, so there is no strict synchronization between the loc...

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Abstract

This invention relates to a two-level synchronous control method for a multiplayer digital cinema play system. When receiving the instruction for playing assigned films, a synchronous controller sends the play instructions to the players via communication links, which start the display prepared process by storing medium fetch film data, decoding and filling the decode data into pre-displayed buffer zone so as to enter into the display preparation state to realize rough synchronization. The synchronous controller transmits synchronous trigger signals to the players via the synchronous transmission circuit, the players display the first image of the pre-display buffer zone after receiving the signals immediately and finish the successive preparation work from fetching of the medium and decoding of film data to fill the data into the zone to enter into the continuous playing state.

Description

technical field [0001] The invention relates to a control method in the technical field of digital cinema. More specifically, it is a two-level synchronous control method for a multi-player digital movie playback system. Background technique [0002] Ring screen and dome screen movies are special forms of movies that can show all the scenes in a wide range. When watching this kind of movie, people stand in the central area of ​​the auditorium and are surrounded by a wide picture, coupled with the cooperation of the omnidirectional stereo sound effect consistent with the movie content, it can produce a strong sense of immersion . Most of the popular films of this type in the world are multi-film film systems. Someone once proposed a synchronization method for a film-based ring-screen movie system. In this method, when shooting, it is necessary to use a special camera that can ensure the synchronous operation of multiple films; The sound reproduction equipment runs synchr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/073G11B31/00H04N5/93G06F15/16G09G5/00
Inventor 杨华陈立李逸王尧余松煜
Owner SHANGHAI JIAO TONG UNIV
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