Working with TV Displays

First Published: 2017-11-21

 

User Role: Administrator, Venue Administrator

This module provides information about setting up TV displays in Cisco Vision Director.

User TV Control

Support for all methods of user TV control is enabled by default in Cisco Vision Director for all media player types. This includes control of TV displays using local control devices and applications, IP phones, touch screens and infrared remote (IR) control.

Some venues have a need to disable user TV control for certain events or suites, or to limit the TV to display a particular channel or control its volume.

TV Display Specification

Cisco Vision Director requires that you configure certain commands and attributes for the TVs used in the venue to ensure proper communication between the media player and the TV. This configuration is defined in what is called a display specification.

By default, Cisco Vision Director includes display specifications for several common TV display models. If your TV display model is not included in the default specifications, then you need to add and configure it.

A different display specification is required for each unique TV type, based on which commands are used to control the TVs. In some cases, all TVs from a certain manufacturer can use the same display specifications. In other cases, different TV models from the same company might require different display specifications.

Note : As a best practice, configure your TV display specifications before configuring Locations in Cisco Vision Director. You must select the “Display Spec” for the type of TV (brand/model) that is physically installed when you configure a Location.

Closed Captioning

The standard for closed captioning (CC) in North America, which all digital TV broadcasters typically follow, is the Consumer Electronics Association (CEA)-608 and CEA-708 closed captioning standard. Figure 1 shows US CC standards.

IMPORTANT : Closed Captioning will not work in Europe or anywhere outside of North America.

Figure 1 Closed Captioning Support in Cisco Vision Dynamic Signage Director

 

422062.JPG

This standard is generally supported on all broadcast channels from service providers. Cisco Vision Director is automatically configured to enable closed captioning CC1–CC4 support on the Cisco SV-4K devices.

Content Orientation

The default orientation for all content in Cisco Vision Director is landscape mode.

In Release 4.1 and earlier releases, you can manually create content in vertical format (static graphics only) and rotate it. Release 5.0 supports auto-rotation of content in portrait mode set in the TV display specification.

Guidelines for Portrait Mode Auto-Rotation

blank.gifSupported in Release 5.0 and later releases.

blank.gifAllows DMPs to automatically rotate content for proper orientation on vertically- positioned displays.

blank.gifSupported for all content sources for a single TV display.

blank.gifScaling of content across multiple display screens in portrait mode is only supported for multicast streaming video.

blank.gifEnabled using the "dmp.Portrait=true" display parameter when configuring TV display specifications in the Control Panel.

HDMI-CEC

Support for HDMI Consumer Electronics Control (CEC) is introduced in Release 5.0. It allows you to control the following three TV functions:

blank.gifPower On

blank.gifStandby (Power Off)

blank.gifPower Status

When HDMI CEC TV control is enabled, HDMI CEC is used instead of RS-232 for TV control functions. To control TVs, you can run the TV On and TV Off from the DMP and TV Controls > TV Commands menu in the Management Dashboard.

You can configure a TV display for HDMI-CEC TV control using one of two methods:

blank.gifApply the HDMI/CEC Standard display specification for new TVs, where the HDMI-CEC display parameters are automatically enabled and set to default values.

blank.gifModify an existing display specification to set the HDMI-CEC display parameters manually.

The following commands are used HDMI/CEC TV control:

blank.gifdmp.powerQueryByCEC—(New in Release 5.0) Enables powerQuery to get TV Power status using HDMI/CEC instead of RS-232.

blank.gifdmp.TVControlbyCEC—(New in Release 5.0) Enables TV control using HDMI/CEC instead of RS-232.

blank.gifdmp.monitorAPIDelay—Frequency of power query command sent by Dynamic Signage Director over HDMI CEC to the TV. The default is 120000 ms (2 minutes). This command is also supported when using TV control with RS-232.

blank.gifdmp.monitorPower—Enables Dynamic Signage Director to run a power query to the TV using the Get Status command from the Management Dashboard. This command is also supported when using TV control with RS-232.

TV Qualification for HDMI-CEC Support

Note: Not all TVs support the standard HDMI-CEC commands. Test the TV models that you plan to install fir support of HDMI CEC. Turn on HDMI-CEC. TV manufacturers refer to CEC by different trade names. For example, Anynet+ (Samsung), BRAVIALink (Sony), EasyLink (Phillips), and SimpLink (LG).

For more information about the successfully tested TV for HDMI CEC, see Release Notes for Cisco Vision Dynamic Signage Director Release 6.0.

Serial Commands for RS-232 Communication

RS-232 commands can be used to control TV functions such as On/Off, mute, volume and external input. In more specialized scenarios they might also be used to configure TV tile matrix capabilities.

RS-232 responses are used to retrieve the current status of a TV. Currently Cisco Vision Director uses responses only when querying a TV for its current power on/off status.

For situations where a TV cannot be controlled via RS-232 or otherwise, volume and mute can be controlled by the media player instead. This is behavior is indicated by configuring volume and mute commands that start with sigma=.

Serial Commands for RS-232 TV Control

Table 1 shows a summary of the display parameters and RS-232 commands for the SV-4K and DMP-2K with their default values. The table shows command names and values for an LG 19LH20 TV display only.

Note : Different TV display models may support only certain RS-232 commands.

Table 1 SV-4K and DMP 2K Serial Commands

Command Name
Value
dmp.Input1response
62203031204F4B303878
dmp.Input2response
62203031204F4B303278
dmp.Input3response
62203031204F4B303478
dmp.Input4response
62203031204F4B303078
dmp.volumeResponseFormat
66203031204F4B5F5F78
dmp.muteOnResponse
65203031204F4B303078
dmp.monitorAPIDelay
2000
dmp.monitorAVInput
true
dmp.monitorMute
true
dmp.monitorPower
true
dmp.monitorVolume
true
dmp.displayPwrQuery
rs232.tx_hex=6B612030312046460D
dmp.displayAVInputQuery
rs232.tx_hex=6B622030312046460D
dmp.muteQuery
rs232.tx_6B652030312046460D
dmp.volumeQuery
rs232.tx_6B662030312046460D
Input1
rs232.tx_6B622030312030390D
Input2
rs232.tx_6B622030312030320D
Input3
rs232.tx_6B622030312030340D
Input4
rs232.tx_6B622030312030300D

 
1The commands in this table are supported by the LG 19LH20 TV display.

Volume Control

When properly configured in Cisco Vision Director, volume changes can be made from methods such as the IP phone, IR remote, Management Dashboard, or event script state change.

Volume changes for the primary video audio can be controlled for the SPDIF (on the SV-4K only), analog audio, and HDMI out ports only when the TV display specification volume strategy is set to internal.

Volume Strategy Option

Cisco Vision Director supports three Volume Strategy settings, see Figure 2.

Figure 2 Control Panel Display Specifications—Volume Strategy Option

 

422063.JPG

Internal—Internal allows volume change control of the audio feed by Cisco Vision Director (such as by the IP phone, IR remote, Management Dashboard, or event script state).

External—External allows volume change control by sending serial commands from the media player to the TV (via RS-232).

Note: We recommend external volume strategy because most TVs have better audio range than the DMP and many TVs show a visual indicator of the volume as it changes. This strategy also avoids problems if someone changes the volume using the TV panel buttons or the TV remote.

None—The volume cannot be adjusted. This is useful for TVs that are used for video only where audio (if any) is provided separately (such as in a bar where an overhead system provides the audio).

How to Configure TV Display Specifications

This section includes the following topics:

blank.gifGuidelines for RS-232 Command Configuration

blank.gifConfiguring Basic Information for TV Display Specifications,

blank.gifConfiguring Portrait Mode in TV Display Specifications

blank.gifConfiguring Touchscreen Support

blank.gifConfiguring Touchscreen Support

Guidelines for RS-232 Command Configuration

Consider the following guidelines when configuring RS-232 commands in TV display specifications:

blank.gifCisco Vision Director supports only one RS-232 command per event state.

blank.gifAll RS-232 commands configured in Cisco Vision Director must use the prefix rs232.tx_hex=.

blank.gifRS-232 responses are used to retrieve the current status of a TV.

blank.gifRS-232 responses are always configured without a prefix.

blank.gifCisco Vision Director uses responses only when querying a TV for its current power on/off status.

blank.gifFor situations where a TV cannot be controlled via RS-232 or otherwise, volume and mute can be controlled by the media player instead.

Configuring Basic Information for TV Display Specifications

User Role: Administrator

To configure basic information for TV display specifications:

1.blank.gif Go to Control Panel > Setup > Devices > Display Specifications.

2.blank.gif Do one of the following:

blank.gifSelect an existing display specification.

blank.gifClick the + icon to add a new display specification.

3.blank.gif Refer to Table 2 to specify the options in the Basic Info panel.

Table 2 Basic TV Display Specification Options

Option
Description
Name
Name that appears in the Display Spec drop-down list when you are adding TV Types to Locations.
TIP : Be sure that this name is unique and easily identifies the type of TV that it defines.
Description
Any text string to describe the TV display specification.
Make
TV manufacturer/brand name.
Model
Model(s) of the brand to which this display specification applies.
This can be a single module type, a group of models, or "All" to specify that all TVs of this brand use the same display specification.
Volume Strategy
Specifies how the TV volume is controlled. The possible values are:
Internal —Volume is controlled using IP phone, IR remote, and so on.
External —Volume is controlled by sending serial commands from the media player to the TV using RS-232.
None —Fixes the volume so that it cannot be adjusted.
For more information, see Volume Control.

4.blank.gif Click Save.

5.blank.gif Apply configuration to the DMPs:

blank.gif SV-4K and DMP-2K —Reboot the DMP(s).

Configuring HDMI-CEC TV Control in TV Display Specifications

User Role: Administrator, Venue Administrator

You can apply the HDMI/CEC Standard display specification for new TVs, or you can modify an existing display specification to add the display parameters commands independently.

If you use the HDMI/CEC Standard display specification, the four related HDMI-CEC commands for TV control are enabled and set to any corresponding default value.

To configure HDMI-CEC display parameters:

1.blank.gif Go to Control Panel > Setup > Devices > Display Specifications

2.blank.gif Select an existing display specification or add a new one.

3.blank.gif Click Display Parameters.

4.blank.gif Find and set the following parameters:

Display Parameter
Value
dmp.powerQueryByCEC
True— Enables powerQuery to get TV power status using HDMI-CEC instead of RS-232.
False—Disables powerQuery using HDMI-CEC.
Note: This command is not supported by all TV models.
dmp.TVControlbyCEC
True—Enables TV control using HDMI-CEC instead of RS-232.
False—Disables HDMI-CEC TV control.
dmp.monitorAPIDelay
Number (in ms) for the frequency of power query command to be sent by Dynamic Signage Director. The default in HDMI/CEC Standard display specification is 12000 ms (or 2 minutes).
dmp.monitorPower
True—Enables Dynamic Signage Director to run a power query to the TV using the Get Status command from the Management Dashboard.
False—Disables the option.

Note : You can run the Get Status command from the Management Dashboard to get the latest TV health status known to the DMP. This information can be up to two minutes old, or a few seconds depending on when the power query last ran.

If the “dmp.monitorPower” parameter is set to false then you will not get the correct TV health status.

5.blank.gif Click Save.

6.blank.gif Reboot the DMPs.

Configuring Portrait Mode in TV Display Specifications

User Role: Administrator, Venue Administrator

Portrait rendering mode allows the DMPs to automatically rotate content for proper orientation on vertically-positioned displays.

To configure the portrait mode display parameter:

1.blank.gif Go to: Control Panel > Setup > Devices > Display Specifications

2.blank.gif Select an existing display specification or add a new one.

3.blank.gif Click Display Parameters.

4.blank.gif Click the + icon to add a new display parameter.

5.blank.gif Where prompted to enter a new command, type dmp.Portrait in the box.

6.blank.gif In the Configured Status box, type true. See Figure 3.

Figure 3 Setting Portrait Display Parameter

 

422934.JPG

7.blank.gif Click Save.

8.blank.gif Reboot the DMPs.

Configuring Touchscreen Support

For proper touchscreen operation with HTML5 pages, be sure that your touchscreen devices are human interface device (HID)-compliant and are using standard HID drivers.

Note: Some manufacturers claim support for HID while using custom drivers. Verify that standard HID drivers are used.

By default the display parameter is set to false for Cisco Vision Director. To enable touchscreen capability between your device and the DMP, you must change that.

To enable touchscreen capabilities for your specific device:

1.blank.gif In Cisco Vision Director, go to Control Panel > Setup > Devices > Display Specifications (Figure 4).

Figure 4 Setting Display Specifications

 

423015.jpg

2.blank.gif Create a display specification for your device screen. See the device specifications for this information. Use the green plus icon to create a new spec.

3.blank.gif Choose Elo for Touch Screen Type from the Basic Info tab (Figure 5).

Figure 5 Touch Screen Type

 

423016.jpg

4.blank.gif Or, scroll down the list of devices. Find your Make and Model and select it.

5.blank.gif Click the Display Parameters tab.

6.blank.gif Scroll down to dmp.SupportsTouchScreen and select it (Figure 6).

Figure 6 Setting.DMPSupportsTouchScreen Parameter

 

423017.jpg

7.blank.gif In the Display Parameter Configuration box, change false to “ true ” for your device (Figure 6).

8.blank.gif Click Save.

By enabling this feature, you are giving touch screen support to a state or a channel to your content (generally an HTML page).

To connect the DMP to your device, use a USB A to B-type cable that connects from the DMP USB port to your device.

Configuring Serial Commands for External Volume Support

User Role: Administrator

When using the external volume strategy, you must configure RS-232 commands to send to the TV to change the volume.

Note : When using internal volume strategy, volume commands do not need to be configured.

Cisco Vision Director allows you to configure two types of volume controls:

blank.gifRelative—Depends on the volume increments set in the TV, which vary from model to model.

blank.gifAbsolute—Preferred method. Defines a number of increments that are used to control the volume between the minimum and maximum volume levels.

blank.gifFor the SV-4K—Absolute volume is configured only by the series of Volumen commands only.

Table 3 provides information about the serial commands used to configure the Relative and Absolute types of external volume control.

Table 3 Serial Commands for External Volume Support

Serial Command
Volume Type
Description
Volume n
Absolute
Specifies the volume increment level, where n is a number from 1 to the total number of volume levels supported.
Configure multiple Volume n commands for the number of increments being supported.
Specify whole numbers for "n." For example specify "1"—not 01.
TIP : The best practice is to set Volume1 to a value greater than zero. A zero volume level is treated as a mute command, and when the user adjusts the volume up, some displays show the status bar as if their volume is turned up, but the display remains muted.
VolumeUp
Relative
Specifies an incremental volume setting determined by internal settings in the TV.
VolumeDown
Relative
Specifies an incremental volume setting determined by internal settings in the TV.
For some TVs, the increase/decrease in volume is very slight requiring multiple VolumeUp or VolumeDown commands to achieve the desired effect. For these TVs, use the dmp.RelativeVolumeSteps” serial command.
dmp.RelativeVolumeSteps
Relative
Specifies the number of times the RS-232 command for VolumeUp or VolumeDown is repeated each time that you press up or down on the IR remote (or on the phone). The default is 1.
For example, if the value is set to 8, then a VolumeUp or VolumeDown command sends 8 copies of the RS-232 string.
dmp.SerialDelay
Relative
Specifies the delay between sending repeated serial commands from the media player. The default is 5000 ms.
This command can be used for certain TV displays that discard repeated serial commands that are sent too close together.

Table 4 shows an example of RS-232 command strings defined for Absolute volume control using 12 increments.

Table 4 Volume Count Command Example for an LG TV Display

Serial Command
String
Volume1
rs232.tx_hex=6B662030312030350D
Volume2
rs232.tx_hex=6B662030312031300D
Volume3
rs232.tx_hex=6B662030312031350D
Volume4
rs232.tx_hex=6B662030312032300D
Volume5
rs232.tx_hex=6B662030312032350D
Volume6
rs232.tx_hex=6B662030312033300D
Volume7
rs232.tx_hex=6B662030312033350D
Volume8
rs232.tx_hex=6B662030312034300D
Volume9
rs232.tx_hex=6B662030312034350D
Volume10
rs232.tx_hex=6B662030312035300D
Volume11
rs232.tx_hex=6B662030312035350D
Volume12
rs232.tx_hex=6B662030312036300D

How to Configure the TV Display Banner

This section includes the following topics:

blank.gifModifying the TV Banner Duration

blank.gifDisabling the TV Display Banner

Modifying the TV Banner Duration

The TV display banner is a graphical banner that temporarily appears at the top of the display to provide information about the TV that received a TV command (Figure 7). The display banner is enabled by default with a duration of 5 seconds.

Figure 7 TV Display Banner and Screen Identification

 

422067.JPG

To configure the TV display banner:

1.blank.gif From the Management Dashboard, go to: DMP and TV Controls > TV Commands> Set Display Banner.

2.blank.gif In the Duration box, set the duration in milliseconds.

3.blank.gif Select the devices to which you want to apply the command.

4.blank.gif Click the play button to run the command on those devices.

Figure 8 Set Display Banner—Common Panel

 

422894.JPG

Disabling the TV Display Banner

User Roles: Administrator

For a better visual experience for video wall displays, disable the TV display banner. The TV display banner is enabled by default for all TV displays.

To disable the TV display banner globally:

1.blank.gif From the Management Dashboard, go to: Tools > Advanced> Registry

2.blank.gif In the Registry Data box, click Add Row.

3.blank.gif In the key field, type localControl.banner.disable.

4.blank.gif In the value field, type true.

5.blank.gif Click Apply.