EP0419776A2 - Fahrzeug-Empfänger - Google Patents

Fahrzeug-Empfänger Download PDF

Info

Publication number: EP0419776A2
Authority: EP; European Patent Office
Prior art keywords: signal; traffic information; broadcast wave; radio broadcast; data signal
Prior art date: 1989-09-27
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.): Granted

Application number

EP90112552A

Other languages

English (en)

French (fr)

Other versions

EP0419776B1 (de

EP0419776A3 (en

Inventor

Osamu Pioneer Electronic Corporation Shishido

Tomoyasu Pioneer Electronic Corporation Hatori

Koichi Pioneer Electronic Corporation Miyano

Hideaki Pioneer Electronic Corporation Kobayashi

Isao Pioneer Electronic Corporation Matsumoto

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Pioneer Corp

Original Assignee

Pioneer Electronic Corp

Priority date (The priority date 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 date listed.)

1989-09-27

Filing date

1990-07-02

Publication date

1991-04-03

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=17190867&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0419776(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1990-07-02 Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp

1991-04-03 Publication of EP0419776A2 publication Critical patent/EP0419776A2/de

1992-05-06 Publication of EP0419776A3 publication Critical patent/EP0419776A3/en

1995-09-27 Application granted granted Critical

1995-09-27 Publication of EP0419776B1 publication Critical patent/EP0419776B1/de

2010-07-02 Anticipated expiration legal-status Critical

Status Revoked legal-status Critical Current

Links

230000005236 sound signal Effects 0.000 claims abstract description 11
230000002238 attenuated effect Effects 0.000 description 4
238000010586 diagram Methods 0.000 description 3
230000003247 decreasing effect Effects 0.000 description 2
238000001514 detection method Methods 0.000 description 1

Images

Classifications

- 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

Definitions

the present invention relates to an on-vehicle radio receiver which receives a broadcast signal in which a data signal indicative of the presence of traffic information is multiplexed with a main signal.
a traffic information system referred to ARI system Auto
Rundfnk Information which is meant primarily for car radios, has been put in practical use in West Germany.
the ARI system employs a subcarrier having a frequency of 57 kHz, three times higher than the pilot tone (19 kHz) in an FM stereo broadcast wave.
This subcarrier serves as a signal referred to an SK signal indicating that the station broadcasts traffic information.
the SK signal is modulated by a message-identifying signal of 125 Hz called a DK signal only when traffic information is on the air.
RDS Radio Data System
This data includes a group consisting of four blocks, each of which including 26 bits, and the second block is assigned one bit of traffic information announcement identification code (referred to as TA code.)
the RDS receiver demodulates the received signal to detect the TA code, thereby identifying that the traffic information is on the air.
the prior art receivers for the ARI system or RDS system when the speaker output is switched to the traffic information from the music having little or no background noise such as audio signal reproduced from an audio tape player, the traffic information with noticeable background noise causes uncomfortable listening conditions. This is particularly true if the speaker output level is adapted to be increased when the traffic information is present.
the decoder When the traffic information is on the air, the decoder reproduces the DK signal or TA signal from the broadcast wave received through the front end.
the DK or TA signal thus extracted is then supplied to the controller which controls the audio circuit so as to output the audio signal at a level higher than when no traffic information is on the air and so as to cut as much background noise as possible.
Fig. 1 is a block diagram showing a first embodiment of the present invention.
An RF signal received through an antenna 1 is applied to a front end 2 where the RF signal is converted into an IF (intermediate frequency) signal.
the IF signal is amplified by an IF amplifier 3 and is then supplied to an FM detector 4 so as to reproduce an audio signal.
the output of the FM detector 4 is supplied to a stereo multiplex circuit 5 by which the signal is separated into a left and a right audio signal.
the left and right audio signals are then fed to level control circuits 7L and 7R.
part of the FM detected output is supplied to a bandpass filter 8 which rejects the high and low frequency components of the output of FM detector 4.s
the output of the bandpass filter 8 is then supplied to the level control circuits 7L and 7R.
the output of the FM detector 4 is also supplied to a decoder (data demodulator) 10 which detects a signal indicating that the traffic. information is on the air at that time, i.e., the DK signal of the ARI system or the TA code for the RDS broadcast.
a decoder data demodulator 10 which detects a signal indicating that the traffic. information is on the air at that time, i.e., the DK signal of the ARI system or the TA code for the RDS broadcast.
the decoder 10 Upon detection of the DK signal or TA code, the decoder 10 outputs an output to the controller 11 which in turn causes a first muting circuit 6 to turn off and a second muting circuit 9 to turn on. As a result, the FM-detected output is rejected its low frequency and high frequency components by the bandpass filter 8 to subsequently feed the level controlling circuits 7L and 7R.
the bandpass filter 8 has a high cut off frequency of about 10 kHz and a low cut off frequency of about 10Hz.
the decoder 10 When the DK signal or TA code is not detected, the decoder 10 outputs no signal to the controller 11, which causes the first muting circuit 6 to turn on and a second muting circuits 9 to turn off. As a result, the output of the bandpass is not supplied to the level controlling circuit 7L and 7R but the L and R outputs of the stereo multiplex circuit 5 are supplied to the circuits 7L and 7R.
the level controlling circuits 7l and 7R include potentiometers VOL1 and VOL2 and resistors R1-R4 and R5-R8 in bridge connection. The wipers of the potentiometers VOL1 and VOL2 are connected to a buffer amplifiers 12L and 12R, respectively.
the resistance R1 and R5 are selected relatively high as compared to the remaining resistors R2-R4 and R6-R8 such that the audio signals from the multiplex circuit 5 are attenuated considerably while the output from the second muting switch 9 is subjected to little or no attenuation.
Fig. 2 shows a second embodiment of the invention, in which elements similar to those in Fig. 1 have been given the same reference numerals and the detailed description thereof is omitted.
the output of the multiplex circuit 5 are fed to a so-called electronic graphic equalizer 13 the output of which goes through an electronic volume control circuit 14 to the buffer amplifiers 12L and 12R.
the microprocessor 15 is connected to an operating panel 16 accessible to the users.
the graphic equalizer 13 is adapted to be programmed its output level such that each of several subdivided frequency ranges of the entire audio frequency range is increased or decreased in accordance with a control signal from the microprocessor 15.
the volume control circuit 14 is adapted to be controlled by a control signal from the microprocessor 15 such that the output level over the entire frequency range thereof is increased or decreased.
the decoder 10 When the decoder 10 detects the DK signal in ARI system or the TA signal in the RDS broadcast, the decoder 10 outputs an output to the microprocessor 15, which in turn supplies to the equalizer 13 the control signal for setting a high frequency, e.g., 10 kHz above which the output of the equalizer is attenuated by several decibels and a low frequency level setting data for setting a low frequency, e.g., 100 Hz below which the output of the equalizer is attenuated by several decibels.
the microprocessor 15 outputs another control signal for increasing the left and right audio signals by several decibels.

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Multimedia (AREA)
Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Circuits Of Receivers In General (AREA)
Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Stereo-Broadcasting Methods (AREA)

EP19900112552 1989-09-27 1990-07-02 Fahrzeug-Empfänger Revoked EP0419776B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP1249296A JP2529737B2 (ja)	1989-09-27	1989-09-27	車載用受信装置
JP249296/89		1989-09-27

Publications (3)

Publication Number	Publication Date
EP0419776A2 true EP0419776A2 (de)	1991-04-03
EP0419776A3 EP0419776A3 (en)	1992-05-06
EP0419776B1 EP0419776B1 (de)	1995-09-27

Family

ID=17190867

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19900112552 Revoked EP0419776B1 (de)	1989-09-27	1990-07-02	Fahrzeug-Empfänger

Country Status (3)

Country	Link
EP (1)	EP0419776B1 (de)
JP (1)	JP2529737B2 (de)
DE (1)	DE69022676T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2762832B2 (ja) *	1992-03-25	1998-06-04	松下電器産業株式会社	ラジオ受信機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS609324U (ja) *	1983-06-29	1985-01-22	富士通テン株式会社	自動音量調整装置
FR2599580B1 (fr) *	1986-05-30	1988-09-23	Elison Sarl	Dispositif de reduction du bruit de fond dans une chaine electroacoustique.
JPH0354442Y2 (de) *	1987-07-03	1991-12-02
DE3743213A1 (de) *	1987-12-19	1989-06-29	Blaupunkt Werke Gmbh	Ukw-empfaenger

1989
- 1989-09-27 JP JP1249296A patent/JP2529737B2/ja not_active Expired - Fee Related
1990
- 1990-07-02 EP EP19900112552 patent/EP0419776B1/de not_active Revoked
- 1990-07-02 DE DE1990622676 patent/DE69022676T2/de not_active Revoked

Also Published As

Publication number	Publication date
JPH03112739A (ja)	1991-05-14
EP0419776B1 (de)	1995-09-27
DE69022676T2 (de)	1996-05-15
JP2529737B2 (ja)	1996-09-04
DE69022676D1 (de)	1995-11-02
EP0419776A3 (en)	1992-05-06

Legal Events

Date	Code	Title	Description
1991-02-16	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1991-04-03	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB
1992-03-18	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1992-05-06	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE FR GB
1992-11-04	17P	Request for examination filed	Effective date: 19920904
1995-03-15	17Q	First examination report despatched	Effective date: 19950131
1995-08-11	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1995-09-27	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB
1995-11-02	REF	Corresponds to:	Ref document number: 69022676 Country of ref document: DE Date of ref document: 19951102
1995-12-08	ET	Fr: translation filed
1996-06-28	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
1996-06-28	PLBQ	Unpublished change to opponent data	Free format text: ORIGINAL CODE: EPIDOS OPPO
1996-06-29	PLBQ	Unpublished change to opponent data	Free format text: ORIGINAL CODE: EPIDOS OPPO
1996-07-05	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
1996-08-03	PLBF	Reply of patent proprietor to notice(s) of opposition	Free format text: ORIGINAL CODE: EPIDOS OBSO
1996-08-14	26	Opposition filed	Opponent name: INTERESSENGEMEINSCHAFT FUER RUNDFUNKSCHUTZRECHTE G Effective date: 19960625
1996-08-21	26	Opposition filed	Opponent name: PHILIPS ELECTRONICS N.V. Effective date: 19960626 Opponent name: INTERESSENGEMEINSCHAFT FUER RUNDFUNKSCHUTZRECHTE G Effective date: 19960625
1996-12-11	PLBF	Reply of patent proprietor to notice(s) of opposition	Free format text: ORIGINAL CODE: EPIDOS OBSO
1997-06-23	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19970623 Year of fee payment: 8
1997-07-09	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19970709 Year of fee payment: 8
1997-07-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19970730 Year of fee payment: 8
1997-08-05	PLBQ	Unpublished change to opponent data	Free format text: ORIGINAL CODE: EPIDOS OPPO
1997-08-08	PLAB	Opposition data, opponent's data or that of the opponent's representative modified	Free format text: ORIGINAL CODE: 0009299OPPO
1997-09-24	R26	Opposition filed (corrected)	Opponent name: INTERESSENGEMEINSCHAFT FUER RUNDFUNKSCHUTZRECHTE G Effective date: 19960625
1997-10-08	REG	Reference to a national code	Ref country code: GB Ref legal event code: 746 Effective date: 19970912
1998-05-15	REG	Reference to a national code	Ref country code: FR Ref legal event code: D6
1998-09-07	RDAH	Patent revoked	Free format text: ORIGINAL CODE: EPIDOS REVO
1998-12-18	RDAG	Patent revoked	Free format text: ORIGINAL CODE: 0009271
1998-12-18	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: PATENT REVOKED
1999-02-03	27W	Patent revoked	Effective date: 19980920
1999-02-03	GBPR	Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state	Free format text: 980920
2008-08-22	PLAB	Opposition data, opponent's data or that of the opponent's representative modified	Free format text: ORIGINAL CODE: 0009299OPPO

Publication	Publication Date	Title
US5513385A (en)	1996-04-30	Reception apparatus, signal reproducing apparatus using reception apparatus and control method thereof
JP3267802B2 (ja)	2002-03-25	受信局自動切換機能を備えた受信機
WO1993000748A1 (en)	1993-01-07	Traffic information broadcast system
CN1059060C (zh)	2000-11-29	一种调谐接收机的方法及采用这种方法的接收机
US4761814A (en)	1988-08-02	Variable bandwidth multivoice demodulating circuit
JP2593078B2 (ja)	1997-03-19	Ｒｄｓラジオ受信機の自動音質調整装置
EP0419776B1 (de)	1995-09-27	Fahrzeug-Empfänger
EP0691736A1 (de)	1996-01-10	Steuerung von Audio-Effekte in Radioempfängern
JPH05344015A (ja)	1993-12-24	Ｒｄｓ受信機を含むオーディオ装置
JPS6236364Y2 (de)	1987-09-16
JP3390199B2 (ja)	2003-03-24	Ｆｍチューナ
JP2648964B2 (ja)	1997-09-03	ラジオ受信機
KR0174470B1 (ko)	1999-04-01	알디에스 방송을 이용한 라우드니스 제어 방법
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US5732340A (en)	1998-03-24	FM receiver
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JPH02214229A (ja)	1990-08-27	自動追従方法
JP3017896B2 (ja)	2000-03-13	多重放送受信機
JP2583541B2 (ja)	1997-02-19	ラジオデータ受信機における制御方法
JP3392208B2 (ja)	2003-03-31	Ｆｍ多重放送受信機
JPS6135079A (ja)	1986-02-19	音声多重放送受信機
JPH0779272B2 (ja)	1995-08-23	Ｒｄｓの自動追従方法