Sony HDW-1800, HDW-D1800 UMID Functions, 7-1Overview, 7-2Recording UMIDs, UMID, To select the type of UMID to record, To select whether to inherit or generate the

UMID Functions Chapter 7

7-1 Overview 7-2 Recording UMIDs

The UMID (Unique Material Identifier) is a type of meta- data in video and audio materials. It has been internationally standardized in SMPTE Standard 330M. This unit supports recording and output of UMIDs.

The UMID is made up of a section called the “Basic” and a section called the “Source Pack”. The Basic section contains information such as the device that recorded the material and whether the material is the original or a copy. The Source Pack section contains information about when/ where/who recorded the material.

A UMID with a Basic section only is called a “Basic UMID”. A UMID with both Basic and Source Pack sections is called an “Extended UMID”. The following figure shows a general overview of the information contained in a UMID.

UMID	Basic	Instance Number
		“Whether the material is
		a copy or the original”.
		Material Number
		“What device the original
		was recorded on”.
	Source Pack	Date/Time
		“When the material was
		recorded”.
		Spatial Co-ordinates
		“Where the material was
		recorded”.
		Stored Ownership
		“Who recorded the
		material”.

UMIDs can be recorded when recording video signals with this unit. You can select whether to inherit (copy) the UMID contained in input signals, or automatically or forcibly generate a new UMID.

To select the type of UMID to record

Select whether to record a Basic UMID or an Extended UMID by using setup menu item 655 “UMID

RECORDING”.

For more information about setup menu item 655, see page 92.

To select whether to inherit or generate theUMID

When recording a UMID, you can select whether to inherit (copy) the UMID contained in input signals, or generate a new UMID. Make this selection by using setup menu item 656 “MATERIAL NO.”.

For more information about setup menu item 656, see page 92.

To select the Instance Number generation method when inheriting UMIDs

If you select to inherit the UMID contained in input signals, almost all information in the UMID is copied without change, but the Instance Number changes to a value which indicates that “this UMID is a copy”. The new value can be generated from a 16-bit pseudo-random number with the addition of the number of copies (1 byte), or it can be generated from a 24-bit pseudo-random number. Select the method used to generate the Instance Number by using setup menu item 654 “UMID

GENERATE METHOD”.

Functions UMID 7 Chapter

7-1 Overview / 7-2 Recording UMIDs 59