JPH09102764A - Diversity device for fm multiplex broadcast receiver - Google Patents
Diversity device for fm multiplex broadcast receiverInfo
- Publication number
- JPH09102764A JPH09102764A JP7279751A JP27975195A JPH09102764A JP H09102764 A JPH09102764 A JP H09102764A JP 7279751 A JP7279751 A JP 7279751A JP 27975195 A JP27975195 A JP 27975195A JP H09102764 A JPH09102764 A JP H09102764A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- tuner
- broadcast
- antennas
- diversity
- 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.)
- Granted
Links
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 2
- 230000009931 harmful effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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- Circuits Of Receivers In General (AREA)
- Radio Transmission System (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はＦＭ多重放送受信機のダ
イバーシティ装置に係わり、特にＦＭ多重放送受信と併
せてＡＭ放送も受信可能な、２バンド型の受信機に適し
たダイバーシティ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diversity apparatus for an FM multiplex broadcast receiver, and more particularly to a diversity apparatus suitable for a two-band type receiver capable of receiving AM multiplex broadcast as well as FM multiplex broadcast reception.
【０００２】[0002]
【従来の技術】ダイバーシティ装置は、指向性の異な
る２本の受信アンテナと、中間周波増幅／ＦＭ検波器
のＳメータの出力あるいは中間周波増幅／ＦＭ検波器の
出力からマルチパスノイズ成分を検出するマルチパスノ
イズ検出回路と、アンテナ切替を指示するダイバーシ
ティ制御部と、アンテナ切替を行うアンテナ切替回路
とを備え、マルチパスノイズレベルに基づいて受信アン
テナを切替え、マルチパスノイズが小さい良好な受信が
できるようにしたものである。2. Description of the Related Art A diversity device detects a multipath noise component from two receiving antennas having different directivities and the output of an S meter of an intermediate frequency amplification / FM detector or the output of an intermediate frequency amplification / FM detector. A multipath noise detection circuit, a diversity control unit for instructing antenna switching, and an antenna switching circuit for antenna switching are provided, and the receiving antenna is switched based on the multipath noise level, and good reception with small multipath noise can be performed. It was done like this.
【０００３】このようなダイバーシティ装置を備えた受
信機の中で、ＦＭ多重放送受信と併せてＡＭ放送も受信
可能な、２バンド型のＦＭ多重放送受信機においては、
（１）ＡＭ放送受信中に同時に文字情報等の情報を得る
べくＦＭ多重放送を受信する場合、ダイバーシティ装置
はＦＭ受信時のみ動作し、ＡＭ受信時には動作させない
構成としたものと、（２）ダイバーシティ装置はＡＭ受
信時にも動作する構成となっているものとがある。Among receivers provided with such a diversity device, a two-band type FM multiplex broadcast receiver capable of receiving AM multiplex broadcast as well as FM multiplex broadcast reception is as follows:
(1) When receiving an FM multiplex broadcast to obtain information such as character information at the same time while receiving an AM broadcast, the diversity device operates only during FM reception and does not operate during AM reception, and (2) diversity Some devices are configured to operate even when receiving AM.
【０００４】[0004]
【発明が解決しようとする課題】前記の二つの構成のう
ち、前者のダイバーシティ装置はＦＭ受信時のみ動作
し、ＡＭ受信時には動作させない構成のものにおいて
は、ダイバーシティ装置のために備えるＭＡＩＮとＳＵ
Ｂの２本のアンテナを、ＡＭ受信中はＭＡＩＮ側を使用
するように切替え固定するのが一般的である。しかし、
ＡＭ／ＦＭチューナはＭＡＩＮアンテナを共用するよう
に接続されているため、ＡＭ受信中にＦＭの局部発振周
波数がＡＭの入力部に結合して受信帯域妨害とみなされ
てＡＧＣが作動し受信を所望する受信周波数の入力レベ
ルが低下し感度劣化を引き起こしたり、ＦＭの入力回路
がＡＭの入力回路に並列に接続されるためアンテナとチ
ューナ入力回路との不整合により感度劣化を引き起こす
などの問題がある。ＦＭ受信中にもＡＭ回路が同様の問
題を引き起こすことがある。Of the above two configurations, the former diversity device operates only during FM reception and does not operate during AM reception. In the case of the configuration, MAIN and SU provided for the diversity device are provided.
It is general to switch and fix the two antennas of B so as to use the MAIN side during AM reception. But,
Since the AM / FM tuner is connected so as to share the MAIN antenna, the local oscillation frequency of the FM is coupled to the input part of the AM during AM reception and it is regarded as reception band interference, and the AGC operates and the reception is desired. There is a problem that the input level of the received frequency is lowered and the sensitivity is deteriorated, or the sensitivity is deteriorated due to the mismatch between the antenna and the tuner input circuit because the FM input circuit is connected in parallel with the AM input circuit. . The AM circuit may cause the same problem during FM reception.
【０００５】また、前記の二つの構成のうち、後者のダ
イバーシティ装置はＦＭ受信時のみならず、ＡＭ受信時
にも動作させる構成のものにおいては、アンテナ切り替
え時のノイズがＡＭチューナで復調されるため、不快な
ノイズとして出力されるなどの問題がある。本発明は、
前記したような問題を解決し、ＡＭ／ＦＭ両バンド相互
間の妨害を軽減し、感度劣化も起こすことのないＦＭ多
重放送受信機のダイバーシティ装置を提供することを課
題としている。Further, of the above-mentioned two configurations, in the latter diversity system which operates not only during FM reception but also during AM reception, noise at antenna switching is demodulated by the AM tuner. However, there is a problem that it is output as unpleasant noise. The present invention
It is an object of the present invention to solve the above-mentioned problems, to reduce the interference between AM / FM bands, and to provide a diversity apparatus for an FM multiplex broadcast receiver that does not cause sensitivity deterioration.
【０００６】[0006]
【課題を解決するための手段】上記の課題は本発明によ
れば、指向性が異なる第１及び第２の、二つのアンテナ
と、所定の現象が検出されたとき前記二つのアンテナの
切替えを指示するアンテナ切替え制御部と、前記アンテ
ナ切替え制御部に制御され前記二つのアンテナを切替え
るアンテナ切替器と、ＡＭ放送を受信するＡＭチューナ
とを備え、ＡＭチューナへの入力は前記アンテナ切替器
を経ずに直接前記第１のアンテナに固定し、ＦＭ多重放
送を受信するＦＭチューナへの入力は前記アンテナ切替
器を経て前記二つのアンテナを選択可能に接続し、ＡＭ
放送受信選択時に併せてＦＭ多重放送を受信する際は、
前記アンテナ切替え制御部はアンテナ切替器を前記第２
のアンテナを選択するように切替えて固定して、ダイバ
ーシティ動作を停止することを特徴とするＦＭ多重放送
受信機のダイバーシティ装置とすることによって解決さ
れる。SUMMARY OF THE INVENTION According to the present invention, the above-mentioned problem is solved by switching between the first and second antennas having different directivities and switching between the two antennas when a predetermined phenomenon is detected. An antenna switching control unit for instructing, an antenna switching unit controlled by the antenna switching control unit for switching between the two antennas, and an AM tuner for receiving an AM broadcast are provided, and an input to the AM tuner is via the antenna switching unit. Without being directly fixed to the first antenna, the input to the FM tuner for receiving the FM multiplex broadcast is selectably connected to the two antennas via the antenna selector.
When receiving FM multiplex broadcast when selecting to receive broadcast,
The antenna switching control unit includes an antenna switching device
This is solved by providing a diversity apparatus of an FM multiplex broadcast receiver characterized by switching and fixing the antennas to select and fix the diversity operation.
【０００７】[0007]
【作用】二つのアンテナの一方、第１のアンテナに固定
的に接続されたＡＭチューナと、アンテナ切替器により
二つのアンテナの選択が可能だがＡＭ受信時には第２の
アンテナを選択して固定されるＦＭチューナとは、ＡＭ
受信時にアンテナを共用しないので相互の干渉等による
悪影響がない。アンテナ切替器を制御するアンテナ切替
制御部は、ＡＭ受信時にはダイバーシティ動作を停止す
るのでアンテナ切替えノイズ等の発生もない。It is possible to select one of the two antennas, the AM tuner fixedly connected to the first antenna, and the two antennas by the antenna switch, but when the AM is received, the second antenna is selected and fixed. AM is FM tuner
Since the antenna is not shared during reception, there is no adverse effect due to mutual interference or the like. Since the antenna switching control unit that controls the antenna switching unit stops the diversity operation at the time of AM reception, there is no occurrence of antenna switching noise or the like.
【０００８】[0008]
【実施例】図１は本発明のダイバーシティ装置を備えた
ＦＭ多重放送受信機要部の構成図である。同図におい
て、１、２は互いに指向性の異なる２本のアンテナであ
り、１がメインアンテナ、２がサブアンテナである。３
は前記２本のアンテナを切り替えるアンテナ切替器、４
はＦＭチューナであり、アンテナ切替器３の出力を入力
とする。該ＦＭチューナ４には、アンテナ同調回路や高
周波増幅回路、局部発振器、混合器を有するフロントエ
ンド、中間周波増幅／ＦＭ検波器等を含み、復調された
音声周波数信号を出力する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of an essential part of an FM multiplex broadcast receiver equipped with a diversity device of the present invention. In the figure, 1 and 2 are two antennas having different directivities, 1 is a main antenna, and 2 is a sub antenna. 3
Is an antenna selector for switching the two antennas, 4
Is an FM tuner, which receives the output of the antenna switching device 3 as an input. The FM tuner 4 includes an antenna tuning circuit, a high frequency amplifier circuit, a local oscillator, a front end having a mixer, an intermediate frequency amplifier / FM detector, etc., and outputs a demodulated audio frequency signal.
【０００９】５はＡＭチューナであり、メインアンテナ
１の出力に入力を固定され、ＦＭチューナ同様、アンテ
ナ同調回路や高周波増幅回路、局部発振器、混合器を有
するフロントエンド、中間周波増幅／ＡＭ検波器等を含
み、復調された音声周波数信号を出力する。Reference numeral 5 denotes an AM tuner, whose input is fixed to the output of the main antenna 1, and like the FM tuner, an antenna tuning circuit, a high frequency amplifier circuit, a local oscillator, a front end having a mixer, an intermediate frequency amplifier / AM detector. And the like, and outputs a demodulated audio frequency signal.
【００１０】６は音声出力切替部であって、前記ＦＭチ
ューナ４、ＡＭチューナ５のそれぞれ出力する音声信号
のいずれかを選択して、後段の電力増幅段等に送り込
む。An audio output switching unit 6 selects one of the audio signals output from the FM tuner 4 and the AM tuner 5, and sends it to a power amplification stage or the like in the subsequent stage.
【００１１】７は所定の現象が生じた場合にアンテナ切
替器３に対しアンテナ切替指示信号を出力するアンテナ
切替制御部であり、ＦＭチューナ４の中間周波増幅／Ｆ
Ｍ検波器のＳメータレベルが18msec( ＦＭ多重データの
１ブロック期間）中に２〜３Ｖ（30dB程度) 瞬間的に減
少したとき、あるいは、レベル変動発生信号を出力する
レベル変動検出部４ａの出力や、後述の多重データ復調
部の発する所定信号出力などを入力されて前記のアンテ
ナ切替指示信号を出力し、アンテナ切替器３を切り替え
る。Reference numeral 7 denotes an antenna switching control unit for outputting an antenna switching instruction signal to the antenna switching unit 3 when a predetermined phenomenon occurs, and an intermediate frequency amplification / F of the FM tuner 4
When the S meter level of the M detector momentarily decreases by 2 to 3 V (about 30 dB) during 18 msec (one block period of FM multiplex data), or the output of the level fluctuation detection unit 4a that outputs the level fluctuation generation signal Alternatively, a predetermined signal output or the like output from a multiplexed data demodulation unit, which will be described later, is input and the antenna switching instruction signal is output to switch the antenna switching unit 3.
【００１２】８は多重データ復調部であり、ＦＭチュー
ナ４の所定部分より取り出したＦＭ検波信号からＬ−Ｍ
ＳＫ変調信号成分を取り出すフィルタ回路、Ｌ−ＭＳＫ
変調信号に遅延検波を施し、ビットロックの再生とビッ
トデータ列の復調を行うＬ−ＭＳＫ復調回路、ブロック
同期やフレーム同期の検出を行う同期回路、ＣＲＣチェ
ック部と誤り訂正回路とを備える誤り検出訂正部等を含
む。Reference numeral 8 is a multiplex data demodulation section, which is an LM from the FM detection signal extracted from a predetermined portion of the FM tuner 4.
Filter circuit for extracting SK modulation signal component, L-MSK
L-MSK demodulation circuit that performs delayed detection on the modulated signal to reproduce bit lock and demodulate a bit data string, synchronization circuit that detects block synchronization and frame synchronization, error detection that includes a CRC check unit and error correction circuit Includes correction section.
【００１３】９は選局操作に従った同調制御やＦＭ多重
データに基づいた各種処理を行うプロセッサＣＰＵ，１
０は受信帯域をＦＭあるいはＡＭに切り換えるキーであ
る。なお、多重データ復調部８が復調した多重データを
表示したりするためのディスプレイ等の部分は図示や説
明を省略する。Reference numeral 9 is a processor CPU for performing tuning control according to a tuning operation and various processing based on FM multiplex data, 1
0 is a key for switching the reception band to FM or AM. It should be noted that parts such as a display for displaying the multiplex data demodulated by the multiplex data demodulator 8 are not shown or described.
【００１４】このように構成した本発明のＦＭ多重放送
受信機のダイバーシティ装置において、ＦＭ多重放送を
受信する場合には、キー１０によりＦＭが選択される
と、ＣＰＵ９はＦＭ受信モードとなり、音声出力切替部
６によってＦＭチューナ４の音声出力が選択され、アン
テナ切替制御部７に対しダイバーシティ動作を許可する
ので、アンテナはメインアンテナ１およびサブアンテナ
２とが使用されて前記したような、所定の現象が生じた
とき、ダイバーシティ制御部７はアンテナ切替指示信号
を出力し、アンテナ切替器３を切り替えて、ダイバーシ
ティ動作が行われ、受信状態を最良のものとする。In the diversity apparatus of the FM multiplex broadcasting receiver of the present invention thus configured, when FM multiplex broadcasting is received, when the FM is selected by the key 10, the CPU 9 enters the FM receiving mode and outputs the voice. The audio output of the FM tuner 4 is selected by the switching unit 6 and the diversity operation is permitted for the antenna switching control unit 7. Therefore, the main antenna 1 and the sub antenna 2 are used as the antenna, and the predetermined phenomenon as described above is performed. When the occurrence occurs, the diversity control unit 7 outputs an antenna switching instruction signal, switches the antenna switching unit 3 to perform diversity operation, and optimizes the reception state.
【００１５】一方、ＡＭ放送を受信する場合に、キー１
０によりＡＭが選択されると、ＣＰＵ９はＡＭ受信モー
ドとなり、音声出力切替部６によってＡＭチューナ４の
音声出力が選択され、アンテナ切替制御部７に対しダイ
バーシティ動作を禁止し、アンテナ切替制御部７はアン
テナをサブアンテナ２に切替え、その状態に固定し、Ａ
Ｍ受信はＡＭチューナ５に固定接続されているメインア
ンテナ１によって行われる。On the other hand, when receiving an AM broadcast, the key 1
When AM is selected by 0, the CPU 9 enters the AM reception mode, the audio output of the AM tuner 4 is selected by the audio output switching unit 6, the diversity operation is prohibited for the antenna switching control unit 7, and the antenna switching control unit 7 is selected. Switches the antenna to sub-antenna 2 and fixes it in that state.
The M reception is performed by the main antenna 1 fixedly connected to the AM tuner 5.
【００１６】このＡＭ受信中にＦＭ多重放送の文字情報
等を得ようとする場合には、アンテナ切替器３を介して
サブアンテナ２から受信信号が入力されるＦＭチューナ
４が、ＦＭ多重放送を受信し、多重データ復調部８によ
り復調されて図示しないディスプレイ等に情報が表示さ
れる。When the character information of FM multiplex broadcasting is to be obtained during the AM reception, the FM tuner 4 to which the received signal is input from the sub-antenna 2 via the antenna switching device 3 receives the FM multiplex broadcasting. The received data is demodulated by the multiplex data demodulation unit 8 and information is displayed on a display or the like not shown.
【００１７】このようにＡＭ受信中であっても、メイン
アンテナ１をＡＭ用、サブアンテナ２をＦＭ用にと使い
分けているので、ＦＭ多重放送の情報を得ることができ
る。As described above, even during AM reception, the main antenna 1 is used for AM and the sub-antenna 2 is used for FM, so that it is possible to obtain FM multiplex broadcast information.
【００１８】[0018]
【発明の効果】以上のように本発明によれば、ＡＭ受信
時はアンテナはメインアンテナのみをＡＭ用として用
い、ＦＭ多重放送受信回路用のアンテナをサブアンテナ
に固定してダイバーシティ動作を停止させるので、ＡＭ
／ＦＭ相互間の妨害が軽減され、しかも感度劣化が生じ
ることのない、またアンテナ切り換えノイズのないダイ
バーシティ装置を提供することができる。As described above, according to the present invention, at the time of AM reception, only the main antenna is used for AM, and the antenna for the FM multiplex broadcast receiving circuit is fixed to the sub antenna to stop the diversity operation. So am
It is possible to provide a diversity device in which interference between the / FMs is reduced, sensitivity is not deteriorated, and antenna switching noise does not occur.
【図１】本発明のＦＭ多重放送受信機要部の構成図であ
る。FIG. 1 is a configuration diagram of a main part of an FM multiplex broadcast receiver of the present invention.
１ メインアンテナ（第１のアンテナ） ２ サブアンテナ（第２のアンテナ） ３ アンテナ切替器 ４ ＦＭチューナ ５ ＡＭチューナ ６ 音声信号切替器 ７ アンテナ切替制御部 ８ 多重データ復調部 ９ ＣＰＵ １０ 操作部のキー 1 Main Antenna (1st Antenna) 2 Sub Antenna (2nd Antenna) 3 Antenna Switcher 4 FM Tuner 5 AM Tuner 6 Audio Signal Switcher 7 Antenna Switch Control Section 8 Multiple Data Demodulation Section 9 CPU 10 Keys of Operation Section
Claims (1)
アンテナと、所定の現象が検出されたとき前記二つのア
ンテナの切替えを指示するアンテナ切替え制御部と、前
記アンテナ切替え制御部に制御され前記二つのアンテナ
を切替えるアンテナ切替器と、ＡＭ放送を受信するＡＭ
チューナとを備え、ＡＭチューナへの入力は前記アンテ
ナ切替器を経ずに直接前記第１のアンテナに固定し、Ｆ
Ｍ多重放送を受信するＦＭチューナへの入力は前記アン
テナ切替器を経て前記二つのアンテナを選択可能に接続
し、ＡＭ放送受信選択時に併せてＦＭ多重放送を受信す
る際は、前記アンテナ切替え制御部はアンテナ切替器を
前記第２のアンテナを選択するように切替えて固定し
て、ダイバーシティ動作を停止することを特徴とするＦ
Ｍ多重放送受信機のダイバーシティ装置。1. A first antenna and a second antenna having different directivities, an antenna switching control unit for instructing switching between the two antennas when a predetermined phenomenon is detected, and the antenna switching control unit. An antenna switching device that is controlled to switch between the two antennas and an AM that receives an AM broadcast
A tuner is provided, and the input to the AM tuner is fixed directly to the first antenna without passing through the antenna switching device.
The input to the FM tuner for receiving the M multiplex broadcast is selectably connected to the two antennas via the antenna switch, and when receiving the FM multiplex broadcast at the time of selecting the AM broadcast reception, the antenna switching control unit F switches the antenna switching device so as to select the second antenna and fixes the antenna to stop the diversity operation.
Diversity device for M multiplex receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27975195A JP3396350B2 (en) | 1995-10-03 | 1995-10-03 | Diversity device for FM multiplex broadcasting receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27975195A JP3396350B2 (en) | 1995-10-03 | 1995-10-03 | Diversity device for FM multiplex broadcasting receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09102764A true JPH09102764A (en) | 1997-04-15 |
| JP3396350B2 JP3396350B2 (en) | 2003-04-14 |
Family
ID=17615406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27975195A Expired - Fee Related JP3396350B2 (en) | 1995-10-03 | 1995-10-03 | Diversity device for FM multiplex broadcasting receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3396350B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1098423A (en) * | 1996-09-20 | 1998-04-14 | Sumitomo Wiring Syst Ltd | Broadcasting reception system and control method for the same |
| JP2001144675A (en) * | 1999-11-16 | 2001-05-25 | Oki Electric Ind Co Ltd | Radio receiver |
| WO2005074165A1 (en) * | 2004-01-30 | 2005-08-11 | Kabushiki Kaisha Toshiba | Electronic device with antenna for wireless communication |
| US8027418B2 (en) | 2005-09-26 | 2011-09-27 | Renesas Electronics Corporation | Diversity reception circuit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60189148U (en) * | 1984-05-23 | 1985-12-14 | クラリオン株式会社 | FM/AM receiver |
| JPS6258936U (en) * | 1985-09-30 | 1987-04-11 | ||
| JPS62105537A (en) * | 1985-11-01 | 1987-05-16 | Fujitsu Ten Ltd | Diversity receiver |
| JPS62159927A (en) * | 1986-01-08 | 1987-07-15 | Fujitsu Ten Ltd | Input circuit for diversity receiver |
| JPH04126434U (en) * | 1991-05-01 | 1992-11-18 | アルパイン株式会社 | diversity receiver |
| JPH05114877A (en) * | 1991-10-23 | 1993-05-07 | Matsushita Electric Ind Co Ltd | Radio receiver |
| JPH0568146U (en) * | 1991-08-30 | 1993-09-10 | いすゞ自動車株式会社 | Diversity receiver |
-
1995
- 1995-10-03 JP JP27975195A patent/JP3396350B2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60189148U (en) * | 1984-05-23 | 1985-12-14 | クラリオン株式会社 | FM/AM receiver |
| JPS6258936U (en) * | 1985-09-30 | 1987-04-11 | ||
| JPS62105537A (en) * | 1985-11-01 | 1987-05-16 | Fujitsu Ten Ltd | Diversity receiver |
| JPS62159927A (en) * | 1986-01-08 | 1987-07-15 | Fujitsu Ten Ltd | Input circuit for diversity receiver |
| JPH04126434U (en) * | 1991-05-01 | 1992-11-18 | アルパイン株式会社 | diversity receiver |
| JPH0568146U (en) * | 1991-08-30 | 1993-09-10 | いすゞ自動車株式会社 | Diversity receiver |
| JPH05114877A (en) * | 1991-10-23 | 1993-05-07 | Matsushita Electric Ind Co Ltd | Radio receiver |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1098423A (en) * | 1996-09-20 | 1998-04-14 | Sumitomo Wiring Syst Ltd | Broadcasting reception system and control method for the same |
| JP2001144675A (en) * | 1999-11-16 | 2001-05-25 | Oki Electric Ind Co Ltd | Radio receiver |
| WO2005074165A1 (en) * | 2004-01-30 | 2005-08-11 | Kabushiki Kaisha Toshiba | Electronic device with antenna for wireless communication |
| EP1709753A4 (en) * | 2004-01-30 | 2008-07-02 | Toshiba Kk | Electronic device with antenna for wireless communication |
| US7486955B2 (en) | 2004-01-30 | 2009-02-03 | Kabushiki Kaisha Toshiba | Electronic device with antenna for wireless communication |
| US8027418B2 (en) | 2005-09-26 | 2011-09-27 | Renesas Electronics Corporation | Diversity reception circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3396350B2 (en) | 2003-04-14 |
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