KR20000018283A - Automatic multimedia navigation device - Google Patents

Abstract

PURPOSE: A navigation device is provided to display a map on a screen as well as to reproduce video and audio by combining functions of an automatic navigation device and functions of an A/V reproduction device. CONSTITUTION: A navigation device comprises functions of showing location and time information transmitted from a GSP satellite in real time on a display which is generated through the MPEG-decoding of GIS-DATA obtained from the MPEG-encoding of moving pictures as well as functions of reproducing digitalized moving pictures and music, to thereby display a map with the location and time information when media obtained from the MPEG-decoding of map DATA is stored in an MPEG-DATA storage unit(4).

Description

Multimedia Auto Navigation System

A positioning device using a positioning satellite (hereinafter referred to as a "GPS satellite") (hereinafter referred to as a "GPS device") is an object moving in a specific position, in particular, the current position, progress of an airplane, a ship, a car, an animal, etc. It is an essential device of the navigation system to track the direction and the trajectory and to adjust the direction and distance of the destination manually or automatically.

In addition, geographic information data (hereinafter referred to as "GIS-DATA") such as maps, aerial and satellite images, the latitude, longitude, altitude and visual data transmitted in real time from the GPS device at every predetermined time, the location of the moving object, A device that displays speed, direction, etc. on a screen on which a map or a picture is drawn is called an “automatic navigation device”.

Conventional autonomous navigation system is composed of ① GPS device, ② central processing device (hereinafter referred to as “CPU device”), ③ memory device, ④GIS-DATA storage device, ⑤ command input device, ⑥ screen processing device, ⑦ screen display device, etc. (Refer to [Fig. 1] configuration diagram of a conventional automatic navigation device), and display only numerical information about the position and speed received from the GPS device on the screen, or " numerically stored GIS-DATA " Complex processing and calculations are output from the device and displayed on the map and then linked to display the location and other information. Therefore, the computational power of the CPU must be excellent. Therefore, a large amount of memory and a large graphic data storage memory are required. It became.

The "numerically stored GIS-DATA" generally follows the "GIS-DATA standard" defined by the "Geographic Information Society", and a raster (VESTER) format and a vector (VECTOR) format are widely used. The former is a format that displays attributes by dividing the space into a grid of a certain size. The smaller the size of the grid, the higher the accuracy but higher cost due to high capacity. The latter uses spatial data using dots, lines, polygons, etc. It is a format that expresses position, length, and space in the spatial coordinate system, and it is easy to express and understand the phenomenal data structure. By applying the condensed data structure, the amount of GIS-DATA is reduced, making it possible to construct a map with high definition and high accuracy It is possible to search, update and standardize the location and attribute, but due to the complexity of the data structure, many calculations are required for map representation and spatial analysis, which requires high-speed computing power of CPU and high capacity storage for screen display. As a result, they require relatively expensive equipment compared to the former.

As a result, a combination of the former and the latter has been developed to complement each other's shortcomings and to select the advantages, but the high-performance CPU, image processing device, and screen display device, which are essential for the automatic navigation system, have a single purpose. Because it is used only in the automatic navigation system of the navigation system, it restricts the versatility and functionality of the automatic navigation system, and it does not use the relatively expensive screen display devices such as television monitor and liquid crystal display (LCD).

In the map output and location interlocking display function using various GIS-DATA of the conventional automatic navigation system, it does not use the VECTOR type map data that requires high-performance CPU computing capability, and the data in the raster type that requires relatively large storage capacity. use.

At this time, a large amount of map data is compressed and stored, and when used, it is decompressed to output the original map. It performs the unique function of the automatic navigation device which displays the information such as the location received from the GPS device on the screen in connection with the output map.

In this case, if the MPEG decoding (hereinafter referred to as "MPEG decoding") method is selected for decompression, a video and audio playback function can be additionally obtained. For this purpose, the map data must be digitally encoded according to MPEG encoding (hereinafter referred to as "MPEG encoding") and MPEG decoding standards. As a result, high-efficiency DATA compression and high-speed decompression are possible by the standard functions of MPEG.

1-Configuration diagram of a conventional automatic navigation device

2-Configuration diagram of a multimedia automatic navigation device according to the present invention

This disease is characterized by encoding GIS-DATA, which is a component of the "automatic navigation system," into still images or moving pictures (MPEG encoding), thereby enabling mass storage media (e.g. CD-ROM (Compact Disc-Read Only Memory), DVD-ROM). (Digital Video Disc-Read Only Memory) ...), decode it (MPEG decode) and display it on the screen (e.g. TV, MONITOR ...), and the location information received from GPS satellites and A device that displays visual information in real time, and uses digital video and audio playback devices (hereinafter referred to as "AV playback devices") using the MPEG decoding function possessed by the device. For example, AUDIO-CD, VIDEO-CD, DVD PLAYER ... It is a "multimedia automatic navigation device" that implements the functions of the "automatic navigation device" and the "AV playback device" combined in a single device.

In detail, as shown in FIG. 2, "Configuration diagram of the multimedia automatic navigation apparatus according to the present invention", ① CPU device receives information received from ② GPS device in real time, ③ stores it in memory device for analysis. .

In addition, by sending the necessary commands to the ④MPEG-DATA storage device and the ⑥MPEG decoding device according to the commands or instructions instructed by the command input device, the program can output the necessary information to the ⑦ display device and ⑧audio output device. When stored in MPEG-DATA storage medium ④When a medium in which the map data is MPEG encoded is input to the MPEG-DATA storage device ① Link the position or time information received from the GPS device to the screen where the map data in the input medium is decoded. When the digital audio or video medium is input, the automatic navigation device performs the function of the automatic navigation device and displays the digital audio or video. In this case, the functions of the digital audio video player (AV player) can be Will be done.

In other words, the functions of the "automatic navigation apparatus" and the "AV reproduction apparatus" can be implemented in a single device.

The production of MPEG encoded media by Map DATA is necessary using an external commercial MPEG encoding tool and an MPEG authoring tool that records them on a CD or DVD, not the multimedia automatic navigation system. It means to make CD or DVD media by making still image or moving image of map DATA or GIS-DATA.

This outbreak includes the ability to display location and visual information from GPS satellites on a map in real time, and the functionality of digital video and audio playback devices (such as AV playback devices such as AUDIO-CD, VIDEO-CD, DVD PLAYER ...). It is a "multimedia automatic navigation device" implemented together, which combines the functions of the "automatic navigation device" and the "AV playback device" with a simple hardware configuration.

Claims (1)

Multimedia auto-navigation device with the function of displaying the position and visual information received from the GPS satellite in real time on the screen which decoded the MPEG encoded GIS-DATA.