GB2342260A - Digital audio broadcasting of traffic information - Google Patents
Digital audio broadcasting of traffic information Download PDFInfo
- Publication number
- GB2342260A GB2342260A GB9827009A GB9827009A GB2342260A GB 2342260 A GB2342260 A GB 2342260A GB 9827009 A GB9827009 A GB 9827009A GB 9827009 A GB9827009 A GB 9827009A GB 2342260 A GB2342260 A GB 2342260A
- Authority
- GB
- United Kingdom
- Prior art keywords
- encoded
- data
- traffic information
- channel
- audio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005236 sound signal Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 230000000153 supplemental effect Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/091—Traffic information broadcasting
- G08G1/094—Hardware aspects; Signal processing or signal properties, e.g. frequency bands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/8106—Monomedia components thereof involving special audio data, e.g. different tracks for different languages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/8146—Monomedia components thereof involving graphical data, e.g. 3D object, 2D graphics
- H04N21/8153—Monomedia components thereof involving graphical data, e.g. 3D object, 2D graphics comprising still images, e.g. texture, background image
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/57—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for mobile receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
- H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
- H04H60/53—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations of destinations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Graphics (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Circuits Of Receivers In General (AREA)
- Navigation (AREA)
Abstract
An arrangement for providing traffic information using digital audio broadcasting to a user of a vehicle multiplexes encoded audio data, an encoded channel ID and encoded additional data. The channel ID indicates a predetermined channel through which the additional encoded data, which may include local traffic information, is transmitted, the location of the traffic information and its length. The multiplexed data is then modulated and transmitted. At a receiver in the vehicle the encoded audio data is processed to provide an audio signal to the driver. The encoded channel ID is decoded and the encoded additional data on the predetermined channel corresponding to the decoded channel ID is extracted, decoded and displayed to the driver. The data may be modulated using a coded orthogonal frequency division multiplexed (COFDM) digital audio broadcast (DAB) modulation scheme. An MPEG decoding scheme may be used in the receiver for the audio data and a JPEG decoding scheme for the additional encoded data.
Description
2342260 METHOD AND APPARATUS FOR RECEIVING TRAFFIC INFORMATION BY USING
DIGITAL AUDIO BROADCASTING 7117he present- invention relates to a method and apparatus for receiving traffic informacion; and, more particularly, to method and apparatus for receiving traffic information in vehicle by using digital audio broadcasting.
The radio data system(RDS) prov-1des supplemental services such as automatic tuning, program. auto- select ion, traffic information, weather information and stock mark-at Mformation, by multiplexing and broadcasting digital data with audio data.
is Among the bandwidths allocated to a FM broadcasting channel, -a unused bandwidths are utilized for the RDS system. RDS dat inaudible subcarriers provide supplemental services which are.1 to radio listeners, wherein additional data that RDS stations broadcast on this subcarrier can be used to increase their profitability, especially by increasing the variety of broadcast services provided and attracting additional listeners.
The RDS is potentially an important asset for both commercial and public broadcast stations. At the minimum, RDS facilitates tuning, helps travelers find available stations and desired programs as the stations fade out of service range. The RDS also simplifies channel selection for homebased receivers as well as providing supplemental data services. Especially, the RDS can be very useful to a driver on a moving vehicle since traffic information on the rout:e which the driver may be headed for can be transmitted by using the RDS.
A radio station keeps transmitting digital data for the traffic information from the database in, e.g., a central traffic control station. A RIDS receiver in a vehicle can 1.0 selectively receive the transmitted digital data and decode it to thereby provide the traffic information to the.driver. In order for the RDS receiver to selectively receive the digital data, a global positioning s,./stem(GPS) receiver should be equipped in the vehicle. By using the GPS receiver, the accurate position of the moving vehicle is determined and the RDS receiver can selectively receive the digital data corresponding to the necessary traffic information.
The GPS is a navigation system consisting of a constellation of 24 satellites in 6 orbital planes that.
provides. accurate 3-dimensional position and velocity information as well as precise time to users an--4here 24 hours a dav. Each of the satellites transmits on the same L-band frequencies using independent pseudo random noise codes for spread spectrum modulation. Satellite data includes system status, ephemeris and clock characeristics and is modulated onto the satellite carrier at 50 bits/sec.
2 - The GPS receiver measures its apparent range to the satellites by processing the received signals to determine transmit time and correcting for atmospheric delay using stored and broadcast models. Since the location of the satellites, at the time of signal transmission, is known from the brcadcasi ephemeris, the locat-ion of t:he vehicle can be triangulated from the range measurements. The vehicle's local clock error can be eliminated from the solution by incorporating one more satellite's range measurement than the Jng solved, number of dimension be.
Similarly, the vehicle's velocity can be obt-ained by comparing the measured Doppler shift of the received signals to the expected Doppler shift based on the satellite's velocity vector, calculated from the ephemeris and projected on the line of sight to t-he satellite. After the vehicle's clock error is eliminated, by over dete= ination, the residual Doppler is attributed to the vehicle's velocity.
However, as described above, the process to determ, ine the vehicle's location and -velocity is highly complicated.
Furthermore, implementing an expensive GPS receiver in each vehicle is not economically efficient. Thus, it -Js desirable to develop a scheme allowing each vehicle to selectively receive useful digital data without: an expensive GPS receiver.
It is, therefore, a primary object of the present invention to provide a method and apparatus for efficiently receiving traffic information in a -vehicle.
In accordance with one aspect of the present invention, there is provided a method for providing traffic information by using a digital audio broadcasting to a driver of vehicle the digital audio broadc located within a range of casting, comprising the steps of: (a) multiplexing encoded audio data, an encoded channel ID and encoded additional data, to thereby generate multiplexed data, wherein the channel ID indicates a predetermined channel through which the encoded additional data is transmitted and the encoded additional data includes local traffic information of the region, the location of the traf f ic inf ormation and the length of the traf f ic inf ormation; (b) modulating the multiplexed data to thereby generate modulated data and transmitting the modulated data, (c) reproducing the encoded audio data and the encoded channel ID rom the modulated data; (d) processing the encoded audio data to thereby provide an audio signal to the driver; (e) decoding the encoded channel ID to thereby provide a decoded channel ID and extracting the encoded additional data on the predetermined channel based on the decoded channel ID; and (f) restoring the traffic information included in the encoded additional data to display the traffic information to the driver.
in accordance with another respect of the present invention, there is provided an apparatus for providing traffic information by using digital audio broadcasting to a driver of a vehicle located within a range of the digital audio broadcasting, comprising: a block for multiplexing encoded audio data, an encoded channel ID and encoded additional. data to thereby generate multiplexed dat:a, wherein the channel ID indicates a predetermined channel through which the encoded additional data is transmitted and the encoded additional data includes local t:ra,-cfic information of the region, the location of the traffic information and the length of the traffic information; a block for modulating the multiplexed data to thereby generate modulated data; a block for transmitting the modulated data; a block for reproducing the encoded audio data and the encoded channel ID from the modulated data, a block for processing the encoded audio data to thereby provide an audio signal to the driver; a block for decoding the encoded channel ID to thereby provide a decoded channel ID; a block for being tuned to the predetermined channel based on the decoded channell ID; a block for receiving the encoded additional data on the T)reder-armined channel based on the decoded channel ID; a block for restoring the traffic information included in the encoded additional data and a block for displaying the traffic information to the driver.
The above and other objects and features of the present invention will become apparent from the following description of preferred embodiments given in conjunction with the accompanying drawings, in which:
Fig. 1 provides a block diagram of a transmitter of a digital audio broadcasting system; and Fig. 2 represents a block diagram of a receiver of the digital audio broadcasting system.
A digital audio broadcasting system is currently being developed by a consortium of European manufacturers called Eureka 147. This has proposed a coded orthogonal frequency divi S4 on multiplexed (COFDM) diaital audio broadcasting L modulation scheme. COFDM is a wideband modulation scheme which is specifically designed to cope with problems of multipath reception. The basic idea of COFDM is to take the digital data to be transmitted and divide it between a large number of adjacent carriers and divide it between time intervals so that only a small amount of data from a sample is carried at any one time.
The.carriers are arranged such that adjacent ones are mathematically orthogonal. This enables their sidebands to overlap so that signals can be received without adjacen carrier interference and consequently a smaller bandwidth is necessary to transmit a plurality of carriers. The present invention provides a transmitter and a receiver for providing local traf f ic inf orm ation by using digital audio broadcasting I Referring to Fig. 1, there is represented a block diagram of a transmitter of a digital audio broadcasting system. A mult-iplexor(MUX) 110 of a locall radio station 100 in a region multiplexes encoded audio data for a radio program, an encoded channel ID and encoded additional da!--a, to thereby generate multiplexed data, wherein the channel ID indicates a predetermined channel through which the encoded additional data is transmitted and the encoded additional data includes local traffic information of the r=aion, the location of the traffic information and the length of the traffic information.
The encoded audio data can be generated by the local radio station or received from a master radio station(not shown).
The multiplexed data is modulated by using a conventional coded orthogonal f requency division multiplexed (COFDM) digital audio broadcast(DAB) modulation scheme, at a COFDM modulator 120. Thereafter, the modulated data is transmitted throuch a transmission network at reference frequency.
Fig. 2 represents a block diagram of a receiver 200 of the digital audio broadcasting system. When a driver of a vehicle selects a radio program broadcasted in the region, a tuner 210 is tuned to the reference frequency and modulated data transmitted at the reference frecpency is received by the tuner 210. The modulated data is provided to a COF--DM demodulator 220.
The COFDM demodulator 220 demcdulates the modulated data to produce the demodulated data, wherein the demodulated data includes the encoded audio data, the encoded channel ID and the encoded additional data. The encoded audio data is applied to an audio decoder 230 and the encoded channel ID is applied to a fast information data channel(FIDC) decoder 250.
The audio decoder 230 decodes the encoded audio data b-v using conventional audio decoding schemes, e.g., MPEG-1 audio layer!, II or MPEG-2 audio decoding scheme, to provide the decoded audio data to a digital to analog(D/.k) converter 240.
The D/A converter 240 converts the decoded audio data into an analog audio signal and provides same to a speaker 245 so that the driver of the vehicle can hear --he corresponding radio program.
Meanwhile, the FIDC decoder 250 decodes the encoded channel ID from the COFDM demodulator 220 to provide the decoded channel ID of the predetermined channel to a system controller 290. The system controller 290 provides a first control signal to a fast information channel(FIC) encoder 260 so that the FIC encoder 260 can select the predetermined channel corresponding to the decoded channel ID and provide a selection signal to the COFDM demodulator 220. The COFE)M demodulator 220, in response to the selection signal, extracts the encoded additional data on the predetermined channel.
Further, the FIC encoder 260 separates information on the location of the traffic information and the length of the traffic information from the encoded additional data received by the COFDM demodulator 220 and provides same to the system controller 290. The system controller 290 provides a second control signal indicating the location of the traffic information and the length of the traffic information to a data interface(I/F) block 270 so that che data I/F block 270 can extract the traffic information included in the encoded additional data. The data I/F block 270 transmits the traf flic " dec information to a joint picture experts grouip(iPEG/ coder 280.
The JPEG decoder 280 decodes the r-raffic information bv using a conventional JPEG decoding scheme and provides the decoded traffic information to a display block 285. The display block 285 is implemented by using, for example, a liquid crystal display unit, and displays the decoded traffic information of the region to the driver of the vehicle.
In accordance with the present invention, local traffic info=ation is transmitted through digital audio broadcasting and received by using a simple equipment in a -vehicle such that the local traf f ic inf ormation can be ef f iciently received by using a cost effective equipment.
While the present invention has been described with respect to the particular embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.
- 9
Claims (11)
1 A method for providing traffic information by using a dig-L.-a! audio broadcasting to a driver of vehicle located within a range of the digital audio broadcasting, comprising the steps of:
(a) multiplexing encoded audio data, an encoded channel ID and encoded additional data, to thereby generate multiplexed data, wherein the channel ID indicates a predetermined channel through which the encoded additional data is transmitted and the encoded additional data includes -" the the region, the location ol local traffic information ol the traffic information.
traf f ic inf ormation and the length oA (b) modulating the multiplexed data to thereby generate modulated data and transmitting the modulated data, (c) reproducing the encoded audio data and the encoded channel ID from the modulated data; (d) processing the encoded audio data to thereby provide an audio signal to the driver; (e).decoding the encoded channel ID to thereby provide a decoded channel ID and extracting the encoded additional data on the predetermined channel based on the decoded channel ID; and (f) restoring the traffic information included in the encoded additional data to display the traffic information to the driver.
2. The method of claim 1, wherein the step (c) includes the steps of:
(cl) being tuned to receive the modulated data; and (c2) demodulating the modulated data to thereby generate -a, the encoded demodulated data including the encoded audio dat channel ID and the encoded additional data.
3. The method of claim 2, wherein the step (d) includes the steps of:
(di) decoding the encoded audio data to thereby provide decoded audio data; (d2) converting the decoded audio data into an analog audio signal, and (d3) providing the analog audio signal to the driver.
is
4. The method of claim 3, wherein the step (e) includes the steps of:
(el) decoding the encoded channel ID to thereby provide the decoded channel ID; (e2). selecting the predetermined channel corresponding to the decoded channel ID; and (e3) extracting the encoded additional data on the predetermined channel.
5. The method of claim 4, wherein the step (f) includes the steps of:
(fl) separating information on the location of the traffic information and the length of the traffic information from the encoded additional data; (f2) extracting the traffic information from the encoded additional data based on the location of the traffic information and the length of the traffic information; and (f3) decoding the extracted traffic information to display the traffic information to the driver.
6. An apparatus for providing traffic information by using digital audio broadcasting to a drive-- of a vehicle located within a range of the digital audio broadcasting, comprising:
means for multiplexing encoded audio data, an encoded channel ID and encoded additional data to thereby generate is multilolexed data, wherein the channel ID indicates a predetermined channel through which the encoded additional data is transmitted and the encoded additional data includes local traffic information of the region, the location of the traf f ic inf ormation and the length of the traf f ic inf ormation; means for modulating the multiplexed data to thereby genera-.e modulated data, means for transmitting the modulated data; means for reproducing the encoded audio data and the encoded channel ID from the modulated data; means for processing the encoded audio data to thereby provide an audio signal to the driver; means for decoding the encoded channel ID to thereby provide a decoded channel ID; means for being tuned to the predetermined channel based on the decoded channel ID; means for receiving the encoded additional data on the predetermined channel based on the decoded channel!D; means for restoring the traffic information included in the encoded additional data; and means for displaying the traffic information to the driver.
7. The apparatus of claim 6, wherein the reproducing means includes:
means for being tuned to receive the modulated data; and is means for demodulating the modulated data to thereby generate demodulated data including the encoded audio data, the encoded channel ID and the encoded additional data.
8. The apparatus of claim 6 or 7, wherein the encoded audio data processing means includes:
means for decoding the encoded audio data to thereby provide decoded audio data; means for converting the decoded audio data into a analog audio signal; and a speaker for providing the analog audio signal to the driver.
9. The apparatus of any one of claims 6 to 8, wherein the traffic information restoring means includes: means for separatincr information on the location of the traffic information and the length of the traffic information from the encoded additional data, meansfor extracting the traffic information from the encoded additional data based on the location of the traffic information and the length of the traffic information; and means for decoding the extracted traffic information.
10. A method for providing traffic information by using digital audio broadcasting to a dri-7er of a vehicle located within a range of the digital audio broadcasting, substantially as herein described with reference to or as is shown in figures 1 and 2 of the accompanying drawings.
L - L
11. An apparatus for providing traffic information by using digital audio broadcasting to a driver of a vehicle located within a range of the digital audio broadcasting, constructed and arranged substantially as herein described with reference to or as shown in f igures 1 and 2 of the accompanying drawings. 4 14
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980040681A KR20000021530A (en) | 1998-09-30 | 1998-09-30 | Traffic information terminal using digital audio broadcasting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9827009D0 GB9827009D0 (en) | 1999-02-03 |
| GB2342260A true GB2342260A (en) | 2000-04-05 |
Family
ID=19552449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9827009A Withdrawn GB2342260A (en) | 1998-09-30 | 1998-12-08 | Digital audio broadcasting of traffic information |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20000021530A (en) |
| GB (1) | GB2342260A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2353872A (en) * | 1999-08-28 | 2001-03-07 | Roke Manor Research | Vehicle drive control, speed warning and navigation apparatus |
| WO2007083946A1 (en) | 2006-01-19 | 2007-07-26 | Lg Electronics Inc. | Method for transmitting and receiving traffic information and apparatus thereof |
| WO2007083947A1 (en) * | 2006-01-19 | 2007-07-26 | Lg Electronics Inc. | Method for transmitting and receiving traffic information and apparatus thereof |
| US7505732B2 (en) * | 2004-12-22 | 2009-03-17 | Fmr Llc | Broadcasting user-specific information |
| US7907590B2 (en) | 2005-05-18 | 2011-03-15 | Lg Electronics Inc. | Providing information relating to traffic congestion tendency and using the same |
| US7940742B2 (en) | 2005-05-18 | 2011-05-10 | Lg Electronics Inc. | Method and device for providing traffic information including a prediction of travel time to traverse a link and using the same |
| US7940741B2 (en) | 2005-05-18 | 2011-05-10 | Lg Electronics Inc. | Providing traffic information relating to a prediction of speed on a link and using the same |
| US20110116515A1 (en) * | 2009-11-16 | 2011-05-19 | Nxp B.V. | System and method for demodulating and decoding a differentially encoded coded orthogonal frequency division multiplexing modulation code using two-dimensional code blocks |
| US8009659B2 (en) | 2006-01-19 | 2011-08-30 | Lg Electronics Inc. | Providing congestion and travel information to users |
| US8050853B2 (en) | 2005-05-18 | 2011-11-01 | Lg Electronics Inc. | Providing traffic information including sub-links of links |
| US8086393B2 (en) | 2005-05-18 | 2011-12-27 | Lg Electronics Inc. | Providing road information including vertex data for a link and using the same |
| US8332131B2 (en) | 2005-05-18 | 2012-12-11 | Lg Electronics Inc. | Method and apparatus for providing transportation status information and using it |
| CN1604508B (en) * | 2003-09-29 | 2013-08-21 | Lg电子有限公司 | Digital broadcasting receiver and method for displaying service component of digital broadcasting |
| US8711850B2 (en) | 2005-07-08 | 2014-04-29 | Lg Electronics Inc. | Format for providing traffic information and a method and apparatus for using the format |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100724359B1 (en) * | 2002-02-27 | 2007-06-04 | 주식회사 엘지이아이 | Digital TV broadcasting combined digital TV apparatus and audio signal processing method thereof |
| KR100771715B1 (en) | 2003-09-02 | 2007-10-30 | 엘지전자 주식회사 | Wireless communication data communication control device and method |
| KR20050037776A (en) * | 2003-10-20 | 2005-04-25 | 엘지전자 주식회사 | Apparatus for receiving digital broadcasting |
| KR100702356B1 (en) * | 2004-12-10 | 2007-04-02 | 한국전자통신연구원 | Subchannel decoder and digital multimedia broadcasting reception method using the same |
| KR100932499B1 (en) * | 2006-03-06 | 2009-12-17 | 엘지전자 주식회사 | Data communication control method |
-
1998
- 1998-09-30 KR KR1019980040681A patent/KR20000021530A/en not_active Ceased
- 1998-12-08 GB GB9827009A patent/GB2342260A/en not_active Withdrawn
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2353872B (en) * | 1999-08-28 | 2004-02-04 | Roke Manor Research | vehicle speed warning apparatus |
| GB2353872A (en) * | 1999-08-28 | 2001-03-07 | Roke Manor Research | Vehicle drive control, speed warning and navigation apparatus |
| CN1604508B (en) * | 2003-09-29 | 2013-08-21 | Lg电子有限公司 | Digital broadcasting receiver and method for displaying service component of digital broadcasting |
| US7505732B2 (en) * | 2004-12-22 | 2009-03-17 | Fmr Llc | Broadcasting user-specific information |
| US7940742B2 (en) | 2005-05-18 | 2011-05-10 | Lg Electronics Inc. | Method and device for providing traffic information including a prediction of travel time to traverse a link and using the same |
| US8332131B2 (en) | 2005-05-18 | 2012-12-11 | Lg Electronics Inc. | Method and apparatus for providing transportation status information and using it |
| USRE47239E1 (en) | 2005-05-18 | 2019-02-12 | Lg Electronics Inc. | Method and apparatus for providing transportation status information and using it |
| US8086393B2 (en) | 2005-05-18 | 2011-12-27 | Lg Electronics Inc. | Providing road information including vertex data for a link and using the same |
| US8050853B2 (en) | 2005-05-18 | 2011-11-01 | Lg Electronics Inc. | Providing traffic information including sub-links of links |
| US7907590B2 (en) | 2005-05-18 | 2011-03-15 | Lg Electronics Inc. | Providing information relating to traffic congestion tendency and using the same |
| US7940741B2 (en) | 2005-05-18 | 2011-05-10 | Lg Electronics Inc. | Providing traffic information relating to a prediction of speed on a link and using the same |
| US8711850B2 (en) | 2005-07-08 | 2014-04-29 | Lg Electronics Inc. | Format for providing traffic information and a method and apparatus for using the format |
| WO2007083947A1 (en) * | 2006-01-19 | 2007-07-26 | Lg Electronics Inc. | Method for transmitting and receiving traffic information and apparatus thereof |
| US8009659B2 (en) | 2006-01-19 | 2011-08-30 | Lg Electronics Inc. | Providing congestion and travel information to users |
| CN101405782B (en) * | 2006-01-19 | 2010-08-04 | Lg电子株式会社 | Method for transmitting and receiving traffic information and apparatus thereof |
| KR100972064B1 (en) | 2006-01-19 | 2010-07-22 | 엘지전자 주식회사 | How to provide information and use it for driving a vehicle |
| US8112195B2 (en) | 2006-01-19 | 2012-02-07 | Lg Electronics Inc. | Method of providing and utilizing information for vehicle travel |
| WO2007083939A1 (en) * | 2006-01-19 | 2007-07-26 | Lg Electronics Inc. | Method of providing and utilizing information for vehicle travel |
| WO2007083946A1 (en) | 2006-01-19 | 2007-07-26 | Lg Electronics Inc. | Method for transmitting and receiving traffic information and apparatus thereof |
| EP1999956A4 (en) * | 2006-01-19 | 2009-12-16 | Lg Electronics Inc | Method for transmitting and receiving traffic information and apparatus thereof |
| US20110116515A1 (en) * | 2009-11-16 | 2011-05-19 | Nxp B.V. | System and method for demodulating and decoding a differentially encoded coded orthogonal frequency division multiplexing modulation code using two-dimensional code blocks |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000021530A (en) | 2000-04-25 |
| GB9827009D0 (en) | 1999-02-03 |
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