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Function of remultiplexer, 4 function of remultiplexer – TANDBERG E5714 User Manual

Page 65

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Options and Upgrades

Instruction Manual: evolution 5000 E57xx DSNG and DENG Voyager Encoder

Page 3-15

ST.TM.E10076.3

3.6.4

Function of Remultiplexer

It is the function of the Remultiplexer to combine the locally generated

host services with the externally supplied input services, connected via ASI

inputs to the rear of the unit. If the Service ID (DVB) or Program Number

(ATSC), PIDs or service names, of two or more of the services clash, the

Remultiplexer can remap the Service ID or program number, remap PIDs,

and alter the service names to resolve the clash.
If a new service is detected on any input, and it clashes with an existing

service, it is the new service’s Service ID or Program Number, PIDs, or

Service Name that are remapped to resolve the conflict. Service names are

made unique by the addition of a number, for example ‘Default Service’

may be renamed ‘Default Service [2]’.
The way the Remultiplexer deals with user requests to remap PIDs

depends on its mode of operation.
When set to ‘Intelligent Mode’ (see Remux Mode Option), if the user then

attempts to move/remap a PID to a PID already being used, the

Remultiplexer allows this to happen, and automatically remaps the element

that was on that PID.
When the Remultiplexer is operating in ‘Dumb Mode’, if the user tries to

remap an element onto a PID that is already being used, it will not allow

the change to take place.

NOTE…
When operating in ‘Dumb Mode’ the Encoder may power up with unresolved PID clashes, which the

user must resolve.

Figure 3.6: Remultiplexer Block Diagram

Dual Port
Ram

IF Output

Remux
ASI
Input

Modulator

QPSK

R

e

multiplexer

Video

Video

Encoder

Audio

Encoder

Audio

Host Mux

Host

Mux

Rate

Remux
ASI
Input

Remux
ASI
Input

Output
Bit-rate

ASI

Driver

ASI Output

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