Content .. 56 57 58 59 ..

Nissan Leaf. Manual - part 58

SYSTEM

AV-223

< SYSTEM DESCRIPTION >

[NAVIGATION WITHOUT BOSE]

CARWINGS Reading Voice Signal

• In the case of the CARWINGS reading voice, the AV control unit receives text data from the NISSAN CAR-

WINGS Data Center through the USB harness and outputs them to the front speaker.

• If CARWINGS data is read while the audio is ON and/or the voice guidance is being output, these audio

sounds are muted and only the CARWINGS reading voice is output.

• Depending on the information from the NISSAN CARWINGS Data Center, not only the CARWINGS reading

voice but also background music may be output. In this case, audio output of the front speaker is turned

down 10 dB and then the CARWINGS reading voice is output.

Guide Sound Signal

• Voice signals output during the route guidance of the navigation system are output from the AV control unit

to the front speaker.

• If the voice guidance is output with the audio ON, audio output of the front speaker is turned down 10 dB and

then voice guidance is output.

• Adjusting the volume while the voice guidance is being output can change the volume of the guidance.

AUDIO FUNCTION

• The MP3/WMA playback function enables music to play for a long time: the user need not change the CD

during a long trip. The text display function is also adopted so that the title name and artist name of the ID3

tag/WMA tag can be displayed.

• Bluetooth

audio function is adopted to play music data in the portable audio via wireless communication.

• The adoption of the vehicle speed interlock sound volume function reduces the burden of the volume adjust-

ment by the difference between the noises when the vehicle is stopped or running. In addition, the vehicle

speed interlock sound volume function can perform ON/OFF setting and sound volume adjustment on a

scale of one to five.

MP3/WMA Playback Function

This function enables the playback of compressed music files, such as MP3 music files used for the most

widespread broadband music distribution and WMA music files played back with a music player generally built
in Windows

personal computers.

Vehicle Speed Interlock Volume Function

• The AV control unit receives the vehicle speed signal from the combination meter via CAN communication

and changes the sound volume in conjunction with the vehicle speed.

• Using the vehicle speed interlock sound volume function, ON/OFF setting can be carried out as preferred by

users, and sound volume variation caused by vehicle speed change can be adjusted on a scale of one to

three.

Bluetooth

Audio Function

• Bluetooth

audio function is adopted to play music data in the portable audio in wireless communication.

• Five units of Bluetooth

communication devices including audio devices and cellular phones can be regis-

tered to the AV control unit.

• When the Bluetooth

audio is connected to the portable audio through Bluetooth

, it can play the music data

in the portable audio.

• When the Bluetooth

audio is playing the data, operations of the other applications are as shown in the fol-

lowing table.

Cellular phone operation (control) status

Bluetooth

audio playback status

Hands-free phone communication

Hands-free phone incoming call

Answering the call stops audio playback temporarily.

CARWINGS service

Information channel and E-mail

Audio playback does not stop.

Audio playback stops temporarily during data commu-
nication.
After the communication has been completed, play-
back resumes.

Telephone book transfer

Audio playback does not stop.

For Bluetooth

audio, audio playback stops temporari-

ly.
After the telephone book has been transferred, play-
back resumes.

AV-224

< SYSTEM DESCRIPTION >

[NAVIGATION WITHOUT BOSE]

SYSTEM

Bluetooth

compliant profile

Satellite Radio

• Satellite radio tuner is built into AV control unit.

• Audio signal and data signal (satellite radio) are received by satellite antenna. There are input to AV control

unit. AV control unit outputs audio signal to each speaker and data signal to display unit.

USB CONNECTING FUNCTION

USB connector enables iPod

compliant and playback of music files in the USB memory.

*: iPod

is the trademark of Apple Inc. registered in the United States and other countries.

iPod

Compliant

• By connecting a user's iPod

to the USB connector, music can be played.

• While iPod

is connected, iPod

is charged.

• It is compliant with various playback methods.

NAVIGATION SYSTEM FUNCTION

Description

• The AV control unit controls navigation function while GPS tuner has built-in map data, GYRO (angle speed

sensor), on the SD card.

• The AV control unit inputs operation signal with communication signal, through front display unit (touch

panel) and multifunction switch and steering switch.

• Guide sound is output to front speaker through from AV control unit when operating navigation system.

• A vehicle position is calculated with the GYRO (angle speed sensor), vehicle sensor, signal from GPS satel-

lite and map data stored on SD card, and transmits the map image signal (RGB image, RGB area, RGB

image synchronizing) to the display.

Position Detection Principle

The navigation system periodically calculates the current vehicle

position according to the following three types of signals.

• Travel distance of the vehicle as determined by the vehicle speed

sensor

• Vehicle turning angle determined by the gyroscope (angular speed

sensor)

• The travel direction of the vehicle determined by the GPS antenna

(GPS information)

The current position of the vehicle is then identified by comparing the

calculated vehicle position with map data, which is stored in the SD

card (map-matching), and indicated on the screen with a current

location mark. More accurate data is used by comparing position

detection results from GPS to the map-matching.

The current position is calculated by detecting the travel distance

from the previous calculation point, and its direction change.

• Travel distance

The travel distance is generated from the vehicle speed sensor

input signal. The automatic distance correction function is adopted

for preventing a miss-detection of the travel distance because of

tire wear etc.

• Travel direction

The gyroscope (angular velocity sensor) and GPS antenna (GPS

information) generate the change of the travel direction. Both have

advantages and disadvantages as per the following descriptions.

Profile name

Abbreviation

Version

Advanced Audio Distribution Profile

A2DP

Ver. 1.2

Audio Video Remote Control Profile

AVRCP

Ver. 1.3

JSNIA3779GB

SEL684V

SYSTEM

AV-225

< SYSTEM DESCRIPTION >

[NAVIGATION WITHOUT BOSE]

Input signals are prioritized in each situation. However, this order of priority may change in accordance with

more detailed travel conditions so that the travel direction is detected more accurately.

Map-matching

Map-matching repositions the vehicle on the road map when a new

location is judged to be more accurate. This is done by comparing

the current vehicle position (calculated by the normal position detec-

tion method) from the map data stored in the SD card.

There is a possibility that the vehicle position may not be corrected in the following case, and when vehicle is

driven over a certain distance or time in which GPS information is hard to receive. Correct manually the cur-

rent location mark on the screen.

• In map-matching, several alternative routes are prepared and pri-

oritized in addition to the road judged as currently driving on.

Therefore, due to errors in the distance and/or direction, an incor-

rect road may be prioritized, and the current location mark may be

repositioned to the incorrect road.

If two roads are running in parallel, they are of the same priority.

Therefore, the current location mark may appear on either of them

alternately, depending on maneuvering of the steering wheel and

configuration of the road, etc.

• Map-matching does not function correctly when road on which the

vehicle is driving is new, etc. and not recorded in the map data.

Also, map-matching does not function correctly when road pattern

stored in the map data and the actual road pattern are different due

to repair, etc.

Therefore, the map-matching function judges other road as a cur-

rently driving road if the road is not in the map, and displays the

current location mark on it. Later, the current location mark may be

repositioned to the road if the correct road is detected.

• Effective range for comparing the vehicle position and travel direc-

tion calculated by the distance and direction with the road data is

limited. Therefore, correction by map-matching is not possible

when there is an excessive gap between current vehicle position and the position on the map.

GPS (Global Positioning System)

Type

Advantage

Disadvantage

Gyroscope (angular velocity
sensor)

The turning angle is precisely detected.

Errors are accumulated when driving a long dis-
tance without stopping.

GPS antenna (GPS informa-
tion)

The travel direction (North/South/East/West) is
detected.

The travel direction is not precisely detected when
driving slowly.

SEL685V

SEL686V

JSNIA0180GB

AV-226

< SYSTEM DESCRIPTION >

[NAVIGATION WITHOUT BOSE]

SYSTEM

GPS (Global Positioning System) is developed for and is controlled

by the US Department of Defense. The system utilizes GPS satel-

lites (NAVSTAR), transmitting out radio waves while flying on an orbit

around the earth at an altitude of approximately 21,000 km (13,049

mile).

The receiver calculates the travel position in three dimensions (lati-

tude/longitude/altitude) according to the time lag of the radio waves

that four or more GPS satellites transmit (three-dimensional position-

ing). The GPS receiver calculates the travel position in two dimen-

sions (latitude/longitude) with the previous altitude data if the GPS

receiver receives only three radio waves (two-dimensional position-

ing). GPS position correction is not performed while stopping the

vehicle.

Accuracy of the GPS will deteriorate under the following conditions:

• In two-dimensional positioning, GPS accuracy will deteriorate when altitude of the vehicle position changes.

• The position of GPS satellite affects GPS detection precision. The position detection may not be precisely

performed.

• The position detection is not performed if GPS receiver does not receive radio waves from GPS satellites.

(Inside a tunnel, parking in a building, under an elevated highway etc.) GPS receiver may not receive radio

waves from GPS satellites if any object is placed on the GPS antenna.

NOTE:

• The detection result has an error of approximately 10 m (32.81 ft) even with a high-precision three dimen-

sional positioning.

• There may be cases when the accuracy is lowered and radio waves are stopped intentionally because the

GPS satellite signal is controlled by the US trace control center.

BLUETOOTH

HANDS-FREE PHONE FUNCTION

• When the cellular phone is connected to the AV control unit in Bluetooth

communication, hands-free phone

communication can be performed.

• Simply operating the steering switch without releasing hands from the steering wheel allows the driver to

make a phone call or receive a phone call.

• For the available cellular phone support model, refer to "Compliant model list" on the CARWINGS site.
• When a Bluetooth

communication compliant phone is registered to the AV control unit, hands-free phone

communication can be performed. Five units of Bluetooth

communication devices including audio devices

and cellular phones can be registered to the AV control unit.

• The content of the memory (telephone book) of the cellular phone can be recorded in the AV control unit.

Bluetooth

compliant profile

VOICE RECOGNITION FUNCTION

• By speaking a command, operations of navigation and hands-free phone can be performed.
• To perform the voice control, press the switch of the steering switch. The system changes to the speech

reception status. When a command is spoken, the speech recognition result is displayed, and the operation

is executed.

• The voice control cannot be performed under the conditions listed below.

- When the hand-free phone is used

- When the vehicle is moving backwards

Major Functions

With this function, the list of commands used for telephone, and navigation operation can be checked.

REAR VIEW CAMERA FUNCTION

Operation Description

• When the selector lever is shifted to the reverse position, the rear view monitor image is displayed.

SEL526V

Profile name

Abbreviation

Version

Hands-Free Profile

HFP

1.5

Dial-Up Networking Profile

DUN

1.1

Object Push Profile

OPP

1.1

Content .. 56 57 58 59 ..