We find new developments in systems repeat (Replay Systems) that have become indispensable tools especially for large sports productions.

Within the television industry, the fields that drive and require the development of new resources and technologies to make more efficient and spectacular routines of production and final product that receives the viewer are some, no doubt, the sports production and news.

These areas of television production are at the forefront in implementing technologies such as portable editing systems, virtual sets, graphing sophisticated equipment, automation systems, etc. All of them have the permanent support recorders and video servers high capacity.

Added to this are new developments in repetition systems (Replay Systems), Which they have become indispensable tools for large sports productions for its new proposal and the possibilities that have failed to show for this specific application.

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A company of Belgium, EVS Broadcast Equipment, It has developed its extensive line of products for specific applications in the production of live sporting events and a set of solutions for the television industry, based disk recording systems. These products have some variations depending on the application, which allow to have a considerable range of possibilities designed for this type of television programming.

What is a disk recorder?

Mr. Eric LeChat, General Manager of EVS, explains it in the following way: "The production of these events has changed thanks to the revolutionary advantages of LSM (Live Slow Motion). Simultaneous recording and replay of this system ends distractions and worries that produce tape recorders (VTR) conventional. If ever you a move or a replay was lost because the VTR was positioned or rewinding, immediately he understood the importance of this technology. Just think that you can now position a jack repetition ... while the action is happening! problems and concerns to produce a live event ended. Now, you can focus on what they really want: the best video, available instantly. "


Among the possible applications that have this kind of systems, in addition to the production of sports programs, insertion of advertising and commercials, digital storage and transmission, and control they include live production.

Multichannel recording systems are disk specifically designed for sports applications. It is a solution that combines elements of software y hardware with custom design features and remote control panel for easy operation. The system allows searching for sequences or images during the recording process. Thus the need to wait until the action ends is avoided.

Repeat the sequence can be repositioned at the same moment in which the beginning of a sequence that has this potential is seen. This is called clip, Common name by which sequences are known in systems not currently NLE.

Management or content management can play simultaneously up to 32 thousand prepared for repeat sequences. The selection process is performed by an intuitive basis or from the remote control panel has a function for this data.


The replay system has nonlinear editing tools. From the production center can perform transmissions of the event from the time when it is over. That is, during the event, you can make decisions editing and preparing lists containing information from these records at any time without interrupting the recording process. Once you have completed this process can send a signal to the air to present a summary of the best actions that occurred during the sporting event. The system also allows adding or deleting sequences according to the requirements and nature of the sporting event, allowing the flexibility to adjust to the times and production schemes live sports.

The EVS has interesting resources such as split-screen, presentation tool that allows two synchronized sequences. This means that by applying this function can be presented to viewers, simultaneously and perfectly synchronized actions that occur in two different places of the event. For example: the reactions of technicians each team or the fierce competition of two athletes as they approach the finish line. This resource offers the commentators and the public the opportunity to analyze and compare the most important actions, and producer, the ability to show details of the sports events that would otherwise go unnoticed.

Another useful tool for sports production is called telestrader. It is a plotter that allows you to draw and mark images. A play can be analyzed using a variety of graphical elements such as circles, arrows and lines. These resources serve to establish trajectories, indicating strategies, anticipate plays, etc., by incorporating a touch screen or digitizing table.

Finally, this system has the function of target tracking by using circles, highlighted or a magnifying glass. It is a simple tracking system for athletes or actions based on reference tables. This allows to follow closely the events on screen. Electronic Magnifier to analyze important actions, doubtful plays, offenses against other players and possible applications depending on the sport being hedged. For example, a play offline in tennis, scoring a career in baseball or playing outside on a basketball match.

Within the configuration options offered by this system are the following products: Live Slow Motion which it is a recording system disk 4 or 6 channels for multiple camera and Super Live Slow MotionDesigned to chambers Super Motion or high speed.

These systems allow searching and "rewind" during recording because they have separate channels for each purpose. You can instantly access 720 20 sequences and perform up lists of repetitions with the respective indications dissolves, wipes, audio mixing and track comments. In any of its configurations, the multichamber system Live Slow Motion (LMS) continues recording source signals while transmitting repeat sequences.

Furthermore, the system Super Live Slow Motion (SLMS) allows recording of signals generated by cameras Super Motion reaching up to three times more log frames per second than conventional video cameras. This model allows immediate access to stored sequences and 180 128 positioning points.

Currently, the EVS system Super Live Slow Motion (SIDS) supports working with Philips LDK23 camera models HS, digital camera developed in conjunction with EVS for coverage of World Cup France 98. It is a camera that provides 150 fields (PAL) and 180 fields (NTSC) per second, thanks to three SDI outputs (Serial Digital Interface) Connected directly to the main frame of the system. This camera also has video output frequency standard (50 60 or fields per second) and can be used as line camera or camera Super Motion.

It can also be installed with the Panasonic AQ-2000 (NTSC) camera that has a digital processing that provides 180 fields per second through SDI outputs. By incorporating an optional EVS switch, it is possible to alternate between three different cameras selectable from the remote controller.

In addition to this, the system can be configured for Sony BVP-9000 (PAL / NTSC) camera that offers 150 or 180 fields per second using a Y / ATDC that connects to the splitter EVS (Rack 1U of 19 "). The divisor 2x1 incorporates a switch for connecting two remote-controlled cameras EVS panel.

Super Split

Among the options offered by this system image highlights that allow multiple divisions of the screen. Super Split y Digiquad are the tools offered EVI Broadcast Equipment for this application.

Super Split You can display up to 64 unsynchronized video sources in real time, using a single monitor by using custom distribution patterns. It also offers the ability to automatically and continuously switch up to 9 pages to see more video sources in sequence.

Digiquad It is another electronic product showing, in real time, video signals 4 unsynchronised on one screen (matrix 2x2). The unit includes a system frame synchronization for each channel and generates permanently stable signal. Filtering system employs a vertical and horizontal to reduce the size and present high quality images free from artefacts (Alterations). The output image includes color separation bands that distinguish the images of each other, as well as a certification system to identify sources of video. This equipment is compact in size designed for applications that have reduced as mobile units and small control rooms spaces. It also allows connections with EVS video servers and systems Live Slow Motion (LSM).

Author: Latin Press



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