Part 2
Navigation System
VOICE CONTROL
NOTE:
Only basic voice controls are available for Japanese specification vehicles. Voice control is not available on Asia specification vehicles.
The voice system provides the driver with the option of voice control for a range of supported functions. In addition to the navigation system, the system also supports the following:
- phone system
- notepad functions
- radio
- satellite radio
- Digital Audio Broadcasting (DAB)
- single CD
- CD autochanger
- USB and auxiliary connection functions.
The voice system adopts a concept known as 'Say What You See' (not applicable to Japan specification vehicles). Each of the voice functions are supported by 'Help' commands, saying 'Help' at each point in the conversation will give a context sensitive explanation of what the user can do at that point. The voice menu shown in the TSD always guides the user through the flow showing not only examples of what they can say next, but also confirmation of where they are in the conversation flow.
The 'notepad' facility allows voice notes to be recorded. Nametags for radio tuning, phone dialing and navigation locations allow the system to be personalized and there is a help and tutorial function to provide advice on using the system.
Voice control is a key component of the navigation system, allowing hands free control when issuing navigation commands.
The system is controlled by the voice button on the steering wheel. Voice commands are picked up by a dedicated microphone. When giving a voice command, audible feedback will be heard through the vehicle's audio speakers.
Voice Control Button
Efficient operation of voice control 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. For additional information, refer to Audio System
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. Voice training phrases will be shown in the TSD 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 is replaced then all voice tags and training will 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.
SYSTEM COMPONENTS
Touch Screen Display and Integrated Control Panel
The TSD (touch screen display) and Integrated Control Panel are located in the center of the instrument panel and are the driver's interface with the navigation system. The TSD is connected to the MOST ring and communicates with the other components in the audio/infotainment system.
The screen processes its own video for system operation but receives the navigation graphics from the IAM (ROW) or the navigation computer (Japan/Asia).
The TSD is a seven inch touch sensitive, 1280 X 480 pixels LCD (liquid crystal display) VGA screen.
In addition to the navigation system the TSD and the Integrated Control Panel provides the driver with display and control of various other vehicle functions.
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 central position in the instrument panel, behind the Integrated Control Panel.
The IAM is a multi functional unit For additional information, refer to Audio System
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 TSD or by voice commands.
The 40 GB hard drive is used for storing the information for satellite navigation (not applicable to Japan/Asia specification vehicles). 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 (not applicable to Japan/Asia specification vehicles) removes the requirement of a separate navigation computer. 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 are loaded directly into the IAM from a Universal Serial Bus (USB) memory stick (not applicable to Japan/Asia specification vehicles).
The map images are transmitted from the IAM to the TSD via a LVDS (Low Voltage Differential Signal) link cable. Turn by turn instructions are displayed in the instrument cluster using messages transmitted on the medium-speed CAN (controller area network)bus.
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 diagnostic system.
Calibration of the IAM using an approved diagnostic system enables updates to be downloaded as new technology becomes available or any fault concerns require software updates.
Roof Pod Incorporating the Global Positioning System Antenna
The GPS (global positioning system) antenna passes signals from the GPS (global positioning system) satellites to the navigation computer for processing.
The GPS (global positioning system) antenna is designed with 50 ohm output impedance. The IAM or navigation computer is fitted with 50 ohm fakra II connectors to ensure compatibility with the antenna. For optimum performance 50 ohm low loss coaxial cable is used between the antenna and IAM or navigation computer.
It is possible for the GPS antenna to lose the signal from the GPS satellites:
- In hilly or tree lined areas
- Built up areas with tall buildings
- In multi storey car parks
- In garages
- In tunnels
- On bridges
- During heavy rain or thunderstorms.
When the signal is lost the IAM or navigation computer will continue to give guidance using memory mapped data from the stored map software (or from the map DVD (digital versatile disc) until the signal is restored.
Microphone
A single microphone is used for hands-free operation using the voice control system. The microphone has an integrated noise suppression system for hands-free use. The microphone is a standard directional type, hardwired to the IAM. When replacing the microphone extra care must be taken to make sure it is fitted into its securing clips for correct positioning and orientation.
TMC Antenna Amplifier
The TMC (traffic message channel) antenna amplifier is connected to the FM antenna. The TMC signals are received through the normal radio signals via the RDS (radio data system) and are routed separately from the radio signals via the TMC antenna amplifier to the Touch Screen Display unit.
JAPANESE NAVIGATION SYSTEM
The Japanese satellite navigation system uses a separate navigation computer module with map data supported by an DVD (digital versatile disc) disc. Additional components are: a navigation computer module and a navigation video interface module.
Navigation Computer Module
Navigation Video Interface Module
Navigation Computer Module
The navigation computer 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 Signaling (LVDS) video signal output which is then passed to the TSD. Audio output is on the MOST ring to the audio amplifier. VICS FM transmission signals are received by the navigation computer module via an FM antenna and a VICS antenna amplifier. Infra-red and RF microwave VICS transmissions are also received by the VICS beacon antenna and are passed to the navigation computer module.
Navigation Video Interface Module
The navigation video interface module converts 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.
VICS Beacon Antenna
The VICS beacon antenna is connected to the TSD via a screened co-axial cable.
The VICS (vehicle information and communication system) beacon antenna receives infra red and RF (radio frequency) traffic data signals from road side transmitters. The antenna is connected to the navigation computer which incorporates a VICS (vehicle information and communication system) antenna amplifier.
VICS Antenna Amplifier
The VICS antenna amplifier is connected to the TSD unit.
ASIAN NAVIGATION SYSTEM
Navigation Computer Module - Asia
In some countries 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 based navigation computer module is fitted below the LH front seat.
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 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. TSD co-ordinates and vehicle power mode status are obtained through the medium speed CAN. Map data is stored via a multimedia Secure Digital (SD) card accessible through an access point on the module.