The XBL Broadcast Logger System was developed to digitally record and playback a multitude of Television channels over a long period of time in a high image and audio quality. The permanent storage can take place for the period of months. The XBL System consists of a Masterunit and one or several Subunits. The XBL Masterunit controls and administers the whole System including all XBL Subunits. The Subunits are dual channel digitally video recorders with a standard capacity of 480 Gbyte. The Subunits can be cascaded at will.



The XBL Broadcast Logger System can substitute traditional VCRs. The archived material can be accessed via the Local Network using the standard Browser. A multitude of users can simultaneously inquire the System via Intranet or Internet.

XBL Masterunit
The XBL Masterunit operates, controls and administers the general system and enables the playback via Network for several users simultaneously. The XBL Masterunit consists of a central database, log-file, application software, as well as a Mail - Messenger. In case of a system failure or video loss, text messages will be generated automatically and sent via e-mail or SMS and they will be visualised in the administers browser view. The management menu can be used to change parameters and view the clearly arranged status information from a distance, individually for all systems. Archive material can be copied to an analog recorder using an integrated video output.

XBL Subunit
Each XBL Subunit has 2 independent recording channels with each 3 video inputs (Composite, S-VHS, MXC) and 2 stereo audio inputs. The Subunits are equipped with a RAID 5 based SCSI hard drive system using hot swap capable hard drives. The Subunits can be delivered, depending on the configuration, with a Storage capacity of up to 720 Gbyte. The used recording - and playback format is the Windows Media MPEG 4. Each XBL Subunit has its own database and can operate even in the case of a network breakdown self-sufficient. Beyond this the Subunits offer special safety features like a video loss detector, a crash recovery, and an Event - Messenger. The Ring storage can be adjusted for each channel individually for a period of 1 to XXX days.

Recording/Storage
The RAID based recording of the TV content is saved in a ring storage. The duration of the ring storage can be adjusted individually for each channel. The recording can take place permanent or timer operated. For each channel the video - bandwidth (56k-1 Mbps) and the audio - bandwidth(10-44 kHz/channel) can be adjusted individually. The playback takes place precise to the second.

Using the Highlight Editor, Highlights can be added to the TV content manually or automatically.

Examples of XBL recording durations, each for one channel with one XBL Subunit and different storage capacities

Bandwidth kbps	Days (288 GByte)	Days (720 GByte)
56	200	480
128	86	210
300	36	90
700	15	38

Playback
The playback takes place via a standard browser offering 4 seeking features.

Text search via program content description.
During the playback the preview window can be activated, thus the live image is shown simultaneously during the playback. The audio channel can be switched.

The playback can take place using three different monitor variations. The original format, full screen modus or a separate monitor window

Options : Recognition + Electronic Program Guide
The recognition software like VIRAGE Video Logger/COBION can be combined with the XBL System. Highlights are generated automatically using face, audio or text-recognition. Using the optional EPG(Electronic Program Guide) additional program information can be stored during the running TV Broadcast.