Part 2
Navigation System
Efficient operation of Land Rover Voice is reliant on the user understanding some of the following basic operating conditions;
- Face forwards, sitting in a normal driving position
- After pressing the voice button, always wait for the end of the tone before speaking
- Speak naturally, as if you were talking to a passenger or on the phone without pausing between words
- When the system asks for more information, always wait for the end of the tone before responding
- Always say numbers correctly
- Excessive noise, for example while driving with windows open, may cause voice command mis-recognition. For example if it is too noisy to use the phone, it is likely that voice commands will not be recognized.
Most accents are understood without difficulty, but if the system does not recognize the command it will respond "SORRY" and allow two more attempts to say the command.
Voice feedback is given in the same language as the command recognition. It is possible to change the language of the speech control system.
Voice control is mainly a software based system. The software responsible for controlling the voice system is resident in the following control modules:
- Integrated Audio Module (IAM) (All markets except Japan)
- Navigation computer (Japan markets only)
- Touch Screen Display (TSD).
Some of these modules contain more than one software component. Voice control communication between these modules takes place via the MOST network. A voice control microphone is located in the front overhead console and is hardwired to the IAM.
When the push to talk button is pressed on the steering wheel, a voltage is received at the TSD via the clockspring assembly. This voltage is sent on a single wire from the button, through a resistive ladder. The whole process is then initiated via the MOST network, for example the TSD starts the voice session and carries out the resulting action requested by the user, but the IAM maintains the dialogue with the user. The accompanying voice instruction is sent to the audio amplifier for broadcast over the speakers from the IAM. If a recognized user instruction is received via the microphone, this is then processed by the IAM and sent to the TSD to perform the required action.
NOTE:
Should a priority view be required in the TSD (for example; Parking aid) this will prevent or cancel the current voice session.
Voice Tags
Voice tags allow the user to store voice entries as shortcuts to control various functions, for example routing to navigation locations, dialing numbers and tuning to radio stations. The voice tags sub-menu accesses controls for navigation, phone, radio and, depending on specification, DAB radio or SDARS.
Voice Training
The voice system allows two different users to create separate profiles, providing training for a User 1 and User 2. Voice training is used to help the system recognize the user's voice more accurately, and when training is activated for each user, a pop-up is displayed to confirm that training is in process for that user. The pop-up informs the user that voice training must be fully completed in order to activate the new voice profile, and offers the option of 'OK' to initiate the session and store data in that User profile, or 'Cancel' to return to the previous menu. Once activated, another pop-up indicates that training is in progress. Voice training phrases will be shown in the TSD Voice Menu and the user will be requested to say each phrase after the listening tone.
NOTE:
Voice training can only be conducted stationary with the engine running and with the climate control NOT in defrost due to background noise.
Voice tags and training are stored in a non-volatile memory within the IAM. Disconnection of the battery would not cause any customer data loss.
NOTE:
To enable new voice tags and training to be written to memory, a period of ten minutes after the last key off cycle must take place. Should the battery be disconnected before this time then data may be lost.
NOTE:
If the IAM was to be replaced then all voice tags and training would be lost.
NOTE:
If either the IAM or the TSD are replaced, it is recommended that the vehicle language settings and voice language settings (if vehicle language is not supported by voice control) are reset to the same setting.
Navigation Destination Entry by Voice
Destination entry uses phonetic transcriptions of the navigation data (stored as part of the map data) to offer the user the ability to enter an address or postcode into the Navigation system by voice. The user simply follows the visual and audible instructions given by the voice system and enters their desired address in a step-by-step manner (e.g. city, then street, then house number). At each address entry stage, the user's voice command is matched against the phonetic map data and a list of likely recognition candidates is presented in a "picklist" for the user to select from. If the chosen address has more than one location associated with it, the voice system will work with the user to determine the exact address they wish to navigate to.
Dialing from the G2P Phonebook
Provided the phonebook has been downloaded via Bluetooth, the voice system is able to perform a grapheme-to-phoneme (G2P) transcription of each of the names stored in the phonebook. This is then used by the voice system to allow the user to dial a contact by saying the name stored in the phonebook, there is no need to store a voice tag first. The user's voice command is matched against the phonebook entries and a list of likely recognition candidates is presented in a "picklist" for the user to select from. If the chosen contact has more than one number associated with it, the voice system will work with the user to determine the exact number they wish to dial.
NOTE:
For regularly used contacts with more than one number, the user can store a voice tag as a shortcut.
INTEGRATED AUDIO MODULE (IAM)
NOTE:
The Japanese/Asia satellite navigation system does not store map data on the IAM. All other functions of the IAM are applicable to the Japanese market. Refer to the following sections 'JAPANESE NAVIGATION SYSTEM' or 'ASIAN NAVIGATION SYSTEM' for details of the Japanese/Asia navigation system.
The IAM is located in a central position in the instrument panel, behind the Integrated Control Panel (ICP).
The IAM is a multi-functional unit which has the following systems and features:
- Radio tuner
- CD (compact disc) player (single slot)
- Hybrid Digital (HD)
- Bluetooth(R) receiver (telephone and audio streaming) Radio (where fitted)
- 40 GB Hard drive (Navigation and audio)
- USB (universal serial bus) controller (for front portable audio interface)
- Audio AUX input
- DVD (digital versatile disc) player (audio and video).
The IAM is connected on the MOST ring to the other audio system components. The driver can control navigation functions by using soft keys on the Touch Screen Display (TSD), steering wheel mounted control switches or by voice commands.
The 40 GB hard drive is used for storing the information for satellite navigation and music files. A 10GB partition is provided for storing music files, the remaining 30GB is used for map data storage.
Hard Disc Drive
The integral hard drive for the navigation system removes the requirement of a separate navigation computer usually found in the rear luggage compartment. The IAM stores the navigation map data locally within the 30GB hard drive partition. By storing the information in this way and processing it within the IAM, navigation display, route calculation speeds and accuracy are vastly improved. Map upgrades and software now have to be loaded directly into the IAM from a DVD (digital versatile disc) or USB (universal serial bus) memory device (`not applicable to Japan/Asia specification vehicles).
The map images are transmitted from the IAM to the TSD via a Low Voltage Differential Signal (LVDS) link cable. Turn by turn instructions are also available, these are displayed in the instrument cluster via a medium speed CAN (controller area network) link between the instrument cluster and TSD.
The IAM communicates on the MOST ring with the rest of the audio system. If the IAM is replaced it must be configured as a new module using an approved Land Rover diagnostic system.
Calibration of the IAM using an approved Land Rover diagnostic system enables updates to be downloaded as new technology becomes available or any fault concerns require software updates.
TOUCH SCREEN DISPLAY (TSD)
The TSD is an 8" color touch sensitive display, located in the instrument panel, above the ICP.
Two versions of the TSD are available; single view and dual view. Additionally the switches surrounding the TSD differ depending on system specification, for example if navigation, dual view or parking aid is specified on the vehicle, these switches will replace tone, mode and set-up respectively.
The dual-view TSD enables the passenger and driver to view completely different images from their respective seating positions. This technology has provided a solution for the legal issues attached to viewing moving images whilst the vehicle is in motion. It is not possible for the driver to view moving images with an active speed signal but the passenger can.
NOTE:
Due to legislation the NAS markets will not receive this option. A single view display is only available in these markets.
The dual-view TSD uses Parallax Barrier Shutter Technology to alternately hide and reveal columns of pixels to the left and right hand views of the screen. The display comes with a specially designed agar coating to help prevent sunlight bleaching.
To access a TV or video image when the vehicle is in motion and single view is selected, the dual view button should be pressed by either the driver or the passenger. This will then switch the TSD to dual-view mode allowing the passenger to view TV or video, but not the driver. A second press of the button will change the TSD back to single view.
Before and after dual view key activation
Once dual-view has been selected, the driver can change the current screen without affecting the passengers view by pressing any of the keys on the TSD.
The audio system can only broadcast one audio source. Therefore, the TV / video source that is current for the passenger will also be the audio the driver can hear. If headphones have been specified as an option, then the passengers can choose to listen to the sound source accompanying the TV / video. This allows the driver to listen to a different audio source or navigation commands via the vehicle speaker system.
The driver's view is also event driven, i.e. if reverse gear were to be selected the rear view camera will be displayed automatically, overriding the displayed navigation or other information. The passenger can choose to see the camera image by pressing the dual-view button to change the TSD display to single view.
For additional information, refer to Audio System Component Locations
ROOF POD OR SIGMA POD GPS ANTENNA
The navigation system GPS (global positioning system) antenna is located in the roof pod or sigma pod. Depending on vehicle specification the roof pod or sigma pod can contain GPS, DAB L-Band or SDARS antennas. The sigma pod is located internally in a central position towards the rear of the roof and is only fitted to vehicles with a panoramic roof. The roof pod is fitted externally on the roof panel and is only fitted to vehicles without a panoramic roof.
The antennas fitted to the Sigma pod MUST be 2mm from the roof when they are fixed/slotted into the Sigma pod carrier which is bonded onto the roof. Both the air gap and fixed position in the carrier are extremely critical to the functionality, operation and efficiency of all the sigma pod antennae.
TMC/VICS FM ANTENNA
Data messages for both TMC and VICS are received through the FM (frequency modulation) antenna and antenna amplifier located in the rear spoiler.
The TMC antenna input is connected to the IAM. On Japan specification vehicles, the VICS antenna input is connected to the navigation module.
JAPANESE NAVIGATION SYSTEM
The Japanese satellite navigation system uses a separate navigation computer module with map data supported by an DVD disk. Additional components are: a navigation computer module and a navigation video interface module.
Navigation Computer Module
A navigation computer module is located in the RH (right-hand) rear of the luggage compartment, at the base of the 'D' pillar.
The module is a DVD (digital versatile disc) drive which reads map data direct from a DVD (digital versatile disc). The navigation computer module is connected on the MOST ring and communicates with the TSD to initiate navigation video and audio output. The GPS antenna is connected directly to the navigation computer module.
The navigation computer module outputs the video signals in a Gigabyte Video InterFace (GVIF) format to a navigation video interface module which converts the GVIF input to a Low-Voltage Differential Signalling (LVDS) video signal output which is then passed to the TSD. Audio output is on the MOST ring to the audio power amplifier. VICS FM (frequency modulation) transmission signals are received by the navigation computer module via an FM (frequency modulation) antenna and a VICS antenna amplifier. Infra-red and RF microwave VICS transmissions are also received by the VICS beacon antenna, located on the top of the instrument panel, and are passed to the navigation computer module.
The navigation computer module outputs the video signals in a Gigabyte Video InterFace (GVIF) format to a navigation video interface module which converts the GVIF input to a Low-Voltage Differential Signalling (LVDS) video signal output which is then passed to the TSD. Audio output is on the MOST ring to the audio amplifier. VICS FM (frequency modulation) transmission signals are received by the navigation computer module via an FM (frequency modulation) antenna and a VICS antenna amplifier. Infra-red VICS transmissions are also received by the VICS beacon antenna, located on the top of the instrument panel, and are passed to the navigation computer module.
Navigation Video Interface Module
A navigation video interface module is located in the RH (right-hand) rear of the luggage compartment, below the rear quarter window.
The video interface module is required to convert the GVIF video output to LVDS video signal which is compatible with the TSD.
A 5V signal output from the TSD is connected to the video interface module. The signal voltage initiates a power up of the video interface module when the TSD is active.
ASIAN NAVIGATION SYSTEM
Navigation Computer Module - Asia
In some Asian markets an after market navigation system is fitted at PDI (pre-delivery inspection) by the dealer or at Port of Entry (POE). A medium speed CAN (controller area network) based navigation computer module is fitted in the LH (left-hand) side of the luggage compartment of the vehicle.
The navigation computer module outputs the video signals in a LVDS format direct to the TSD. Audio output is passed to the IAM which converts the signals and passes them to the audio power amplifier on the MOST ring. When Audio is required, such as a Voice guidance instruction, the Asia navigation computer module communicates to the vehicle audio system using a hard wire connection between the TSD and the Asia navigation computer module. Touch screen co-ordinates and vehicle power mode status is obtained through the medium speed CAN (controller area network). Map data is stored via a multimedia Secure Digital (SD) card accessible through an access point on the module.
A 5V signal output from the TSD is connected to the navigation module. The signal voltage initiates a power up of the navigation module when the TSD is active.