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Information transmitting/receiving system, information transmitting/receiving method, and handwritten information compressing method used for them

A technology of handwritten information and compression method, which is used in transmission systems, traffic control systems, digital transmission systems, etc.

Inactive Publication Date: 2004-12-01
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in such existing systems that use optical or radio beacons to transmit handwritten information and image information, the amount of information that can be processed by optical beacons or radio beacons is limited to less than 10K in one data communication byte, so there is a problem that the handwritten information from the central unit of the traffic management center must be compressed by size reduction and change according to the processing capacity of the central unit.

Method used

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  • Information transmitting/receiving system, information transmitting/receiving method, and handwritten information compressing method used for them
  • Information transmitting/receiving system, information transmitting/receiving method, and handwritten information compressing method used for them
  • Information transmitting/receiving system, information transmitting/receiving method, and handwritten information compressing method used for them

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Experimental program
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no. 1 Embodiment

[0031] Fig. 1 shows the whole of the information sending and receiving system according to the first embodiment of the present invention. Fig. 9 shows event list information, image information and handwritten information in the first embodiment of the present invention. In FIG. 1 and FIG. 9 , the handwritten information extraction device 1 is composed of a computer device for processing the electrical information from the handwritten information input device 11 , and has the function of submitting the extracted information to the communication server 2 .

[0032] The handwritten information input device 11 is composed of a digitizer using a pressure-sensitive method, an electromagnetic method, an optical method, an ultrasonic method, or the like. The communication server 2 converts various information including handwritten information into content required for transmission, and controls the transmission period. The handwritten information storage device 3 is a magnetic record...

no. 2 Embodiment

[0047] In the second embodiment of the present invention, a method and system for correctly transmitting all handwritten information data with a capacity of about 30 KB will be described. In this case, the amount of data that can be sent at one time by the optical beacon is still limited to less than 10KB, so the method of sending data that cannot be sent at one time is divided into multiple times.

[0048] 4 is a schematic block diagram of a system for transmitting handwritten or image information from a center device 401 to a mobile information device 403 mounted on a mobile body such as a vehicle via a communication device 402 according to a second embodiment of the present invention.

[0049] In FIG. 4 , the handwritten information input device 404 is connected to the handwritten information extraction device 405 for writing handwritten information on the writing board of the handwritten information input device 404 with a writing pen. The handwritten information data with...

no. 3 Embodiment

[0060] In the first embodiment of the present invention, the following system and method are described: the data of handwritten or image information is divided and prioritized for sorting, and only the prioritized data is summarized into a capacity of no more than 10KB, which is sent and received at a time; and In the second embodiment of the present invention, the following system and method are described: by dividing the data of handwriting or image information into a plurality of data with a capacity of no more than 10 KB, and transmitting and receiving multiple times, to correctly display handwriting or image information. image. Hereinafter, as a third embodiment of the present invention, a method of compressing data of handwritten information using a new algorithm will be described.

[0061] It can be considered that the handwritten data is a list of start point data and end point data. A data capacity of 4 bytes is required to represent any one point in the list of thes...

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Abstract

The present invention provides an information transmitting / receiving system, by which it is possible to receive all information data by putting priority rank to the information when all information data cannot be transmitted at one time due to a limitation in the communication means. The information transmitting / receiving system comprises handwritten information extracting means 405 for dividing the information to a set of a plurality of data, a data transmission setting unit 406 for setting a timing to transmit a plurality of divided data to a plurality of data transmitting units, communication units 402 for transmitting the divided data from an information data transmitting unit 407 via a transmitting / receiving server 416, and a mobile information system 403, which comprises a handwritten / image data receiving unit 410 for receiving the data, a handwritten / image data processing unit 411 for restoring the received data to the initial information, and a handwritten / image data display unit 412.

Description

[0001] This case is a divisional application of the Chinese patent application with application number 01803361.X. technical field [0002] The present invention relates to an information sending and receiving system, an information sending and receiving method and a handwritten information compression method used in them, which are used to efficiently transmit various information such as handwritten information and image information by using communication components such as optical beacons or radio wave beacons. More specifically, it relates to a system for sending and receiving information, a method for sending and receiving information, and a method for compressing handwritten information used in them. Under the condition that the capacity of data that can be received at one time is limited due to the limitation of the capacity of communication components, it can efficiently Send and receive messages. Background technique [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B29/00G01C21/00G01C21/26G08G1/09G08G1/123G08G1/137H04B7/26H04L29/06H04W28/00
CPCG08G1/202G01C21/26H04L29/06H04L9/40G08G1/0968
Inventor 高柳雄一
Owner PANASONIC CORP
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