Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
1999-06-09
2003-09-02
Tu, Christine T. (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C455S517000, C714S701000
Reexamination Certificate
active
06615381
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a technology for transmitting/receiving digital data between a base station and a mobile object terminal, and more particularly, to a digital data transmitting/receiving method, a base station unit used for transmitting/receiving digital data, and a mobile object terminal unit used for transmitting/receiving digital data, which enable collection of information desired by the mobile object terminal among service information distributed from the base station.
BACKGROUND OF THE INVENTION
As a digital data transmitting/receiving technology in the broadcasting by a communication satellite (CS) or a broadcasting satellite (BS) and the ground wave digital broadcasting, service information is distributed from a base station (broadcasting station) to mobile object terminals existing in a service area thereof, by using a prescribed broadcasting channel.
In addition, Japanese Published Patent Application No. Hei.7-154350 discloses a multiplex broadcasting method in which multiplex data is broadcast after area codes such as zip codes are attached to the multiplex data on the broadcasting station side to restrict broadcasting target areas of area information such as commercials closely related to areas, an area code of an installation area of a multiplex broadcasting receiver is registered as ID of the receiver in a memory on the receiver side, the area code of the received multiplex data which is separated by a data extracting circuit and ID in the memory are compared with each other, and only when they are judged to coincide with each other, a picture image corresponding to the multiplex data is displayed on an image receiver.
However, in the prior art digital data transmitting/receiving method, since the base station distributes various kinds of service information by using a prescribed broadcasting channel, it is difficult for the mobile object terminal which is provided with the service information to collect only information which the mobile object terminal really needs among the various kinds of service information.
In the multiplex broadcasting method which restricts the areas, as disclosed in Japanese Published Patent Application No. Hei. 7-154350, it is impossible to collect only the information desired by a user, neither.
SUMMARY OF THE INVENTION
The present invention is made to solve the above-mentioned problem, and an object of the present invention is to provide a digital data transmitting/receiving method, a base station unit used for transmitting/receiving digital data, and a mobile object terminal unit used for transmitting/receiving digital data, which enable collection of information desired by the mobile object terminal among service information distributed by the base station.
Other objects and advantages of the invention will become apparent from the detailed description that follows. The detailed description and specific embodiments described are provided only for illustration since various additions and modifications within the spirit and the scope of the invention will be apparent to those skill in the art from the detailed description.
According to a 1st aspect of the present invention, there is provided a method for transmitting/receiving digital data between a base station established on the ground and a mobile object terminal installed on a mobile object existing in a service area, wherein the base station provides service information to the mobile object terminal by digital communication by using a broadcasting channel; the base station transmits the data after identification information is added in header information of the service information which is provided to the mobile object terminal; and the mobile object terminal has an address showing the identification information, analyzes the identification information by indicating the address, and enables to identify whether the service information is provided to the mobile object terminal itself Therefore, the mobile object terminal as a user can collect only desired information among the service information which is provided by the prescribed broadcasting channel, by indicating the address showing the identification information.
According to a 2nd aspect of the present invention, in the digital data transmitting/receiving method according to the 1st aspect, the identification information includes an area identification part and a vehicle identification part. Therefore, the mobile object terminal as a user can collect only desired information among the service information which is provided by the prescribed broadcasting channel, by indicating the address showing the identification information.
According to a 3rd aspect of the present invention, in the digital data transmitting/receiving method according to the 1st aspect, the identification information includes an area identification part and a user identification part. Therefore, the mobile object terminal as a user can collect only desired information among the service information which is provided by the prescribed broadcasting channel, by indicating the address showing the identification information.
According to a 4th aspect of the present invention, in the digital data transmitting/receiving method according to the 1st aspect, the identification information includes a vehicle type identification part and a vehicle identification part. Therefore, the mobile object terminal as a user can collect only desired information among the service information which is provided by the prescribed broadcasting channel, by indicating the address showing the identification information.
According to a 5th aspect of the present invention, in the digital data transmitting/receiving method according to the 1st aspect, the identification information includes an area identification part, a vehicle type identification part, a vehicle identification part, and a user identification part. Therefore, the mobile object terminal as a user can collect only desired information among the service information which is provided by the prescribed broadcasting channel, by indicating the address showing the identification information.
According to a 6th aspect of the present invention, in the digital data transmitting/receiving method according to any of the 2nd, 3rd, and 5th aspects, the area identification part includes a code representing a country, a prefecture, or a municipality. Therefore, the mobile object terminal as a user can collect only desired information among the service information which is provided by the prescribed broadcasting channel, by indicating the address showing the identification information.
According to a 7th aspect of the present invention, in the digital data transmitting/receiving method according to any of the 4th and 5th aspects, the vehicle type identification part includes a code representing a vehicle manufacturer, a vehicle type, or a vehicle year model. Therefore, the mobile object terminal as a user can collect only desired information among the service information which is provided by the prescribed broadcasting channel, by indicating the address showing the identification information.
According to an 8th aspect of the present invention, in the digital data transmitting/receiving method according to any of the 2nd, 4th, and 5th aspects, the vehicle identification part includes a code representing license plate information. Therefore, the mobile object terminal as a user can collect only desired information among the service information which is provided by the prescribed broadcasting channel, by indicating the address showing the identification information.
According to a 9th aspect of the present invention, in the digital data transmitting/receiving method according to any of the 3rd and 5th aspects, the user identification part includes a code representing a terminal ID or a user ID. Therefore, the mobile object terminal as a user can collect only desired information among the service information which is provided by the prescribed broadcasting channel, by indicating the address showing the ide
Fukuda Hisaya
Nohara Akira
Suzuki Akihiro
Taniguchi Tomohiko
Tu Christine T.
Wenderoth , Lind & Ponack, L.L.P.
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