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Central control device of vehicle navigation multimedia system

A multimedia system and control device technology, applied in road network navigators, vehicle components, transportation and packaging, etc., can solve the problems of high standby power consumption, unfavorable function optimization, low reliability, etc., and achieve the advantages of upgrading and Expansion, beneficial to power saving, and the effect of improving the integration of functions

Inactive Publication Date: 2006-04-12
GUANGDONG RITU INFORMATION SYST
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Problems solved by technology

[0002] Existing vehicle-mounted GPS navigation multimedia system device at present has nine deficiencies: the first, do not use a chip and a set of central control platform centralized management and control, but all adopt two cover central control platforms (one set) in one device control navigation, one set for multimedia control), or three sets of central control platforms (one set for navigation control, one set for multimedia control, and one set for man-machine interface), which leads to complex system structure and high cost
Second, the integration of multimedia functions is not high
Third, without adding inertial navigation, it can only be used in open and unobstructed road conditions. Navigation cannot be used in areas where GPS signals cannot be received, such as viaducts, tunnels, and underground parking lots.
Fourth, the system of the control center cannot be updated and upgraded online
It is not conducive to the optimization of functions
Fifth, the standby power consumption of the whole system is relatively high, and the standby current is greater than 5mA, which is not conducive to the power saving of the car battery
Sixth, the system clock needs to be manually input and adjusted, which is complicated and inaccurate
Seventh, the control center cannot display Chinese subtitles, which is not conducive to the use of Chinese consumers
Eighth, the flexibility of the system is insufficient. The overall system architecture design is not conducive to system upgrades and expansions. When new functions are added, the system needs to be redesigned, resulting in long development cycles, long reliability verification cycles, and premature and immature products. low reliability issues
Ninth, the storage medium is single, generally only CD storage

Method used

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  • Central control device of vehicle navigation multimedia system
  • Central control device of vehicle navigation multimedia system
  • Central control device of vehicle navigation multimedia system

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Embodiment Construction

[0022] Such as figure 1 Shown is a functional block diagram of a preferred embodiment of the present invention, the vehicle navigation multimedia system central control device 1 includes an audio circuit, a video circuit, a man-machine interface circuit, a central processing unit 2, a power supply circuit 19, and a central processing unit 2 Using ATMEL's new high-end AVR MCU-ATmega64 or ATmega128, the chip integrates large-capacity memory (FLASH ROM, RAM, EEPROM) and rich and powerful hardware interface circuits (IO, AD, PWM output, external interrupt, Input Capture, Output Compare, SPI, SCI, I 2 C, IEEE 1149.1 JTAG online programming), suitable for connecting various standard interface devices, with high scalability, compatibility, and flexibility in building complex systems. Due to the international common interface design, the system composed of this chip has very rich external resources for adding and connecting new functions, which speeds up the product development cycle...

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Abstract

A central controller of vehicle carried multimedia navigation system is composed of the audio circuit for receiving and reproducing audio signals, the video circuit for receiving and displaying video signals, the man-machine interface for controlling the working state of central controller, and the CPU for receiving instructions from man-machine interface and controlling the audio and video circuits. Said CPU has serial bus, I2C bus, parallel bus, AD interface, interrupt interface and multiple I / O ports.

Description

technical field [0001] The invention relates to a central control device, in particular to a central control device of a vehicle navigation multimedia system. Background technique [0002] Existing vehicle-mounted GPS navigation multimedia system device at present has nine deficiencies: the first, do not use a chip and a set of central control platform centralized management and control, but all adopt two cover central control platforms (one set) in one device Control navigation, one set for multimedia control), or three sets of central control platforms (one set for navigation control, one set for multimedia control, and one set of human-machine interface), which leads to complex system structure and high cost. Second, the integration of multimedia functions is not high. It does not integrate various multimedia functions, but only integrates a small amount of multimedia functions, such as integrating radio, power amplifier, DVD, and analog TV. Third, without inertial navi...

Claims

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Application Information

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IPC IPC(8): G01C21/26B60R11/02
Inventor 谭蓁裴广军
Owner GUANGDONG RITU INFORMATION SYST
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