LaserBarcode 2™ Commands & Logo (cont.)

Original Independent Commands (LB & LB2)

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The final two original independent LaserBarcode commands are designed for use in barcode development and testing. The Debug On and Debug Off commands allow the barcode developer to test printed barcodes to determine their accuracy. They are described below.

13.Debug On - Instructs the player to maintain various player settings so that barcodes can be tested. For example: If the Display is turned on by the user through the remote control unit or front panel button, scanning Debug On will instruct the player to maintain that setting for subsequent barcode commands. Normally, when barcodes are transmitted to the player, the Display is turned off. Debug On will also instruct the player to maintain previously set video and audio attributes. So, if the player is set to stereo with the video on, these attributes will be maintained even if the barcode you scan changes the attributes to a different setting. Again, this is done so the developer can test the accuracy of the general operation of the barcode.

14.Debug Off - Instructs the player to disable the Debug On mode and allows exact execution of the barcode as defined. Debug Off need only be used if Debug On has been previously set.

Extended Independent Commands (LB2)

15.Start - Instructs the player to spin up the disc from a park position and pause at frame 1 (CAV discs) or time number 0:00:00 (CLV discs) with video squelched.

16.D-Stereo- Sets the audio control attribute to "digital stereo," plays back left and right digital audio channels simultaneously.

17.D-Ch 1/Left - Sets the audio control attribute to "digital channel 1," plays back digital left channel only.

18.D-Ch 1/Right - Sets the audio control attribute to "digital channel 2," plays back digital right channel only.

NOTE: Many discs do not have digital audio. Digital audio playback can only be implemented if digital audio is encoded on the disc. Please refer to the documentation for the particular videodisc in use.

The Slow Forward and Slow Reverse commands below can only be used with CAV discs.

19.Slow Forward 1 - Instructs the player to play forward at 1/4 the normal speed.

20.Slow Forward 2 - Instructs the player to play forward at 1/8 the normal speed.

21.Slow Forward 3 - Instructs the player to play forward, displaying 1 frame / second.

22.Slow Forward 4 - Instructs the player to play forward at 1 frame / 3 seconds.

23.Slow Reverse 1 - Instructs the player to play in reverse at 1/4 the normal speed.

24.Slow Reverse 2 - Instructs the player to play in reverse at 1/8 the normal speed.

25.Slow Reverse 3 - Instructs the player to play in reverse, displaying 1 frame / second.

26.Slow Reverse 4 - Instructs the player to play in reverse at 1 frame / 3 seconds.

D-6

TP 117 v. 2.0 • 12/93 Appendix D LaserBarcode & LB2 Commands & Logos