JP2004179988A - Portable terminal and radio broadcast reception method - Google Patents

Portable terminal and radio broadcast reception method Download PDF

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JP2004179988A
JP2004179988A JP2002344120A JP2002344120A JP2004179988A JP 2004179988 A JP2004179988 A JP 2004179988A JP 2002344120 A JP2002344120 A JP 2002344120A JP 2002344120 A JP2002344120 A JP 2002344120A JP 2004179988 A JP2004179988 A JP 2004179988A
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radio broadcast
radio
terminal device
unit
receiving unit
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Japanese (ja)
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Masaki Suzuki
雅樹 鈴木
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NEC Platforms Ltd
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NEC AccessTechnica Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal having a radio broadcast receiving function which is improved in operability and reduced in cost. <P>SOLUTION: The portable terminal is provided with first and second radio broadcast receiving parts, when a user moves during reception of radio broadcast in the first radio broadcast receiving part, the second radio broadcast receiving part retrieves a frequency, detects the same program at a moving destination and when its receiving sensitivity becomes high, tunes the first radio broadcast receiving part to the frequency. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、携帯端末装置に関し、特にラジオ放送受信機能を備えた携帯端末装置とラジオ放送の受信方法に関する。
【０００２】
【従来の技術】
現在、様々な機能を備えた携帯電話機が提案されている。その中で、例えばラジオ放送受信機能を備えた無線電話装置がある（例えば、特許文献１参照）。これらの携帯電話機には、受信エリアに応じて、選局できる放送局の周波数を予め記憶しておき、ユーザーが移動した際には携帯電話の位置情報に基づいて放送局を自動選局できる携帯電話機もある（例えば、特許文献２参照）。
【０００３】
【特許文献１】
特開平０５−２６８１５１号公報（第２−３頁、図１−図２）
【特許文献２】
特開平０８−１６２９０９号公報（第５−６頁、図１−図３）
【０００４】
【発明が解決しようとする課題】
しかし、上記特許文献１に開示された無線電話装置は、１つのラジオ放送局の電波を受信できる範囲が２０〜５０ｋｍ程度であるため、ユーザーが移動した場合には移動先の地域ごとに選局が必要となり、面倒な手間を要する。また特許文献２に開示された携帯電話機（端末装置）は、上記選局の手間を省くことができるが、全国の放送局を網羅するには膨大な量のデータが必要となり、メモリ容量の増加による高コスト化という問題がある。また新規に開設された放送局など、メモリに記憶されていない放送局については自動選局が不可能である。
【０００５】
本発明はこのような問題を解決し、携帯電話機のユーザーが移動し、受信している放送局の周波数が変わった場合でも、自動的に選局し、同じ番組を続けて聴取することができ、かつ低コストの携帯端末装置と該装置を用いたラジオ放送受信方法を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明の第１の携帯端末装置は、第１のラジオ放送受信部と、第２のラジオ放送受信部と、第１と第２のラジオ放送受信部が受信する放送信号を比較する放送信号比較部と、第１と第２のラジオ放送受信部が受信する放送の受信感度を比較する受信感度比較部と、ラジオ放送の受信を制御する制御部とを備える。
【０００７】
また、本発明の第２の携帯端末装置は、外部のラジオ放送受信器の信号入力手段と、外部のラジオ放送受信器の周波数を調整する手段と、第２のラジオ放送受信部と、外部のラジオ放送受信器と第２のラジオ放送受信部が受信する放送信号を比較する放送信号比較部と、外部のラジオ放送受信器と第２のラジオ放送受信部が受信する放送の受信感度を比較する受信感度比較部と、ラジオ放送の受信を制御する制御部とを備える。
【０００８】
上記携帯端末装置では、制御部は基地局から入手した位置情報に基づき携帯端末装置が移動したことを検知する検知手段を備えることができる。上記第１および第２のラジオ放送受信部は、それぞれアンテナ部、放送受信部、およびシンセサイザ部を備えることができ、また第２のラジオ放送受信部が備える放送受信部およびシンセサイザ部として上記携帯端末装置の受信部とシンセサイザ部を用いることができる。
【０００９】
上記第１の携帯端末装置では、制御部は第１のラジオ放送受信部がラジオ放送受信中に携帯端末装置が移動したとき第２のラジオ放送受信部に受信可能な周波数を検索させ、さらに第１及び第２のラジオ放送受信部がそれぞれ受信するラジオ放送を比較し、同一の放送信号であるが周波数が異なり第２のラジオ放送受信部の受信感度のほうが高い場合は第１のラジオ放送受信部の受信周波数を第２のラジオ放送受信部が受信している周波数に切り替えることができる。
【００１０】
同様に上記第２の携帯端末装置では、制御部は外部のラジオ放送受信器が受信するラジオ放送を受信中に携帯端末装置が移動したとき第２のラジオ放送受信部に受信可能な周波数を検索させ、さらに制御部は外部のラジオ放送受信器及び第２のラジオ放送受信部がそれぞれ受信するラジオ放送を比較し、同一の放送信号であるが周波数が異なり第２のラジオ放送受信部の受信感度のほうが高い場合は外部のラジオ放送受信器の受信周波数を第２のラジオ放送受信部が受信している周波数に切り替えることができる。
【００１１】
本発明の第１のラジオ放送の受信方法は、携帯端末装置中の第１のラジオ受信部によってラジオ放送を受信し、該携帯端末の移動を検知したとき該携帯端末装置中の第２のラジオ受信部によって受信可能な周波数の検索を開始し、第１及び第２のラジオ受信部がそれぞれ受信するラジオ放送を比較し、それぞれのラジオ放送が同一の放送信号を有するが周波数が異なり第２のラジオ放送受信部の受信感度のほうが高い場合は第１のラジオ放送受信部の受信周波数を第２のラジオ放送受信部が受信している周波数に切り替える。
【００１２】
本発明の第２のラジオ放送の受信方法は、外部のラジオ放送受信器を携帯端末装置に接続し該外部のラジオ受信部によってラジオ放送を受信し、該携帯端末の移動を検知したとき該携帯端末装置中の第２のラジオ受信部によって受信可能な周波数の検索を開始し、外部のラジオ受信器及び第２のラジオ受信部がそれぞれ受信するラジオ放送を比較し、それぞれのラジオ放送が同一の放送信号を有するが周波数が異なり第２のラジオ放送受信部の受信感度のほうが高い場合は外部のラジオ放送受信器の受信周波数を第２のラジオ放送受信部が受信している周波数に切り替える。
【００１３】
上記携帯端末装置およびラジオ放送の受信方法では、携帯端末のユーザがラジオ放送受信しながら移動しても、受信中の番組をそのまま自動的に連続して聴取することができる。
【００１４】
【発明の実施の形態】
図１は本発明の携帯端末装置の具体例を示すブロック図である。この携帯端末装置は、まず携帯電話器としての送受信機能を実現する構成要素として、アンテナ１と、スイッチ２と、送信部３と、シンセサイザ部４と、受信部５と、制御部６と、表示部７と、キー操作部８と、レシーバ９と、マイク１０と、スピーカ１１と、位置情報記憶部１２とを有する。
【００１５】
上記アンテナ１は、携帯電話の送受信を行うものであり、スイッチ２を介して携帯電話の送信部３または受信部５へ接続される。送信部３の送信周波数と受信部５の受信周波数は、シンセサイザ部４により調整される。上記携帯電話器の無線部は制御部６により制御され所定の周波数で送受信を行う。携帯電話器の基地局から送信される位置情報は、上記受信部で受信して位置情報記憶部１２へ記憶される。
【００１６】
表示部７は電話番号や時刻など様々な情報を表示する表示部であり、キー操作部８は英数字を入力するためのテンキーやカーソル移動のための十字キーなどを備える。レシーバ９は携帯電話器の通話時に相手の音声を出力し、マイク１０はユーザーの声を収集する。スピーカ１１は着信時に鳴音して着信を知らせるほか、ラジオ放送の音声を出力することも可能である。
【００１７】
さらに本具体例では、放送受信機能を実現する構成要素として、アンテナ１３と、放送受信部１４と、シンセサイザ部１５とを備える第１のラジオ放送受信部１６と、アンテナ１７と、放送受信部１８と、シンセサイザ部１９とを備える第２のラジオ放送受信部２０とを有する。また、第１および第２のラジオ放送受信部が受信する放送の放送信号を比較する放送信号比較部２１と、第１および第２のラジオ放送受信部の放送受信感度を比較する受信感度比較部２２を備える。これら第１、第２のラジオ放送受信部１６、２０と放送信号比較部２１と受信感度比較部２２は上記制御部６によって制御される。
【００１８】
アンテナ１３はラジオ放送受信用のアンテナであり、シンセサイザ部１５により受信周波数が調整され、所定の周波数のラジオ放送を放送受信部１４で受信する。この第１のラジオ放送受信部１６は、ユーザーがまず最初にラジオ放送を聴くための受信手段である。アンテナ１７と、放送受信部１８と、シンセサイザ部１９とを備える第２のラジオ放送受信部２０は、ユーザーが第１のラジオ放送受信部１６によりラジオ番組を聴いている間に、第１のラジオ放送受信部１６の受信周波数以外の受信可能な周波数を検索し、受信することができる。
【００１９】
放送信号比較部２１は、互いに異なる周波数で受信している第１のラジオ放送受信部１６の放送信号と、第２のラジオ放送受信部２０の放送信号を比較し、放送信号が同じであるかどうか、すなわちそれぞれの受信している放送が同じ放送局からのものであるかどうかを判定する。比較方法は、例えば受信した放送信号をＡ／Ｄ変換した後の音声データを比較すれば容易に実現可能である。受信感度比較部２２は、放送信号比較部２１の比較の結果、互いに異なる周波数で受信した第１のラジオ放送受信部１６の放送信号と第２のラジオ放送受信部２０の放送信号が同じ場合に、第１のラジオ放送受信部１６と第２のラジオ放送受信部２０の受信感度を比較し、受信感度のよいほうの受信周波数を第１のラジオ放送受信部１６に設定する。受信感度の比較は、受信レベルの強さを比較することで容易に実現可能である。
【００２０】
以上の構成により、ユーザーが移動しても自動的に受信周波数の同調が行われるため、手動選局などの煩わしい操作をすることなく、最適な受信状態が継続して得られる。
【００２１】
上述の具体例の携帯端末装置の動作の例について、図２のフローチャートを用いて説明する。まずユーザーは携帯端末装置をオンにして（Ｓ１０１）、ラジオ受信モードを設定し（Ｓ１０１）、ラジオ放送局を選択し（Ｓ１０２）、第１のラジオ放送受信部で受信を開始すると（Ｓ１０３）、携帯端末装置の基地局へ位置情報を要求する（Ｓ１０５）。
【００２２】
携帯端末装置は位置情報に変更がない場合は選択したラジオ放送局の受信を続行する（Ｓ１０６、Ｓ１０７）。位置情報に変更がある場合は、ユーザーが移動したと見なして、第２のラジオ放送受信部によって受信可能な放送の周波数を検索する（Ｓ１０６、Ｓ１０８）、次に検索した周波数が第１のラジオ放送受信部で受信中の周波数と同じであるか比較を行う（Ｓ１０９）。
比較結果が第１のラジオ放送受信部で受信中の周波数と同じであれば、再度第２のラジオ放送受信部で放送を受信可能な周波数を検索する（Ｓ１０８）。
【００２３】
比較結果が第１のラジオ放送受信部で受信中の周波数と違う場合には、第１のラジオ放送受信部と第２のラジオ放送受信部の受信データ（放送信号）の比較を行う（Ｓ１１０）。受信データ（放送信号）が異なる場合は、第１のラジオ放送受信部で受信中の放送局と同じ放送局ではないと判断し（Ｓ１１１）、再度第２のラジオ放送受信部で受信可能な放送の周波数の検索を開始する（Ｓ１０８）。受信データ（放送信号）が同じ場合は、第１のラジオ放送受信部で受信中の放送局と第２のラジオ放送受信部で受信中の放送局は同じであると判断して（Ｓ１１１）、第１のラジオ放送受信部の受信している放送の受信感度と、第２のラジオ放送受信部で受信している放送の受信感度を比較する（Ｓ１１２）。受信感度の比較結果、第１のラジオ放送受信部で受信中の放送の方が受信感度がよい場合（Ｓ１１３のＮＯ）は、第１のラジオ放送受信部で受信を続行し（Ｓ１１５）、第２のラジオ放送受信部で受信中の放送の方が受信感度がよい場合は、第１のラジオ放送受信部の受信周波数を第２のラジオ放送受信部の受信周波数に変更して（Ｓ１１４）、そのラジオ放送を受信する（Ｓ１１５）。
【００２４】
以上の動作により、携帯端末装置のユーザーが移動する場合、同じ番組をそのまま継続して聴くために、受信している放送局の周波数を変更する必要が生じた場合でも、自動的に同調を行うことが可能となる。なお周波数の比較と受信データ（放送信号）の比較は上記の順と逆でもよい。
【００２５】
次に、本発明の他の具体例について、図３のブロック図を用いて説明する。ここでは、前述の例においてアンテナ１７と、放送受信部１８と、シンセサイザ部１９とを備える第２のラジオ放送受信部２０は、アンテナ１７とスイッチ２３とを備えた構成になっている。ユーザーがラジオ放送を聴いている間は、携帯端末装置は着信待ちの状態であり、間欠受信を行っている。そこで、携帯端末装置が間欠受信を行わない時は、携帯端末装置の受信部５とシンセサイザ部４を第２のラジオ放送受信部２０の受信回路として利用することができる。このため回路の削減と、更なるコストダウンが可能となる。
【００２６】
更に他の具体例について、図４のブロック図を用いて説明する。ここでは第１のラジオ放送受信部１６として外部のラジオ放送受信器を使用する。このため外部ラジオ放送受信器の信号入力手段２４と外部ラジオ放送受信器の周波数調整手段２５を備える。図４では第２のラジオ放送受信部２０は図３のような携帯端末装置の受信部５とシンセサイザ部４を受信回路として利用する構成が示されているが、図１のような専用の放送受信部とシンセサイザを備える構成も当然可能である。上記周波数調整手段２５は制御部６によって制御される。
【００２７】
【発明の効果】
本発明においては、携帯端末装置によってラジオ番組を聴いているユーザーが移動する場合に、ユーザーの移動先の放送局からの同じ番組を自動的に選局できるため、手動選局などの煩わしい操作が不要となり、使い勝手のよいラジオ放送受信機能付き携帯端末装置を提供できる。
【００２８】
また２つのラジオ放送受信手段により自動選局を行うため、予め放送局などの情報をメモリ内に記憶しておく必要がなく、メモリ容量の削減によるコストダウンが可能となる。
【図面の簡単な説明】
【図１】本発明の携帯端末装置の構成例を示すブロック図。
【図２】本発明のラジオ放送受信方法の例を示すフローチャート。
【図３】本発明の携帯端末装置の他の構成例を示すブロック図。
【図４】本発明の携帯端末装置のさらに他の構成例を示すブロック図。
【符号の説明】
１、１３、１７ アンテナ
２ スイッチ
３ 送信部
４、１５、１９ シンセサイザ部
５ 受信部
６ 制御部
７ 表示部
８ キー操作部
１２ 位置情報記憶部
１４、１８ 放送受信部
１６ 第１のラジオ放送受信部
２０ 第２のラジオ放送受信部
２１ 放送信号比較部
２２ 受信感度比較部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mobile terminal device, and more particularly, to a mobile terminal device having a radio broadcast receiving function and a method of receiving a radio broadcast.
[0002]
[Prior art]
Currently, mobile phones having various functions have been proposed. Among them, for example, there is a wireless telephone device having a radio broadcast receiving function (for example, see Patent Document 1). In these mobile phones, the frequency of a broadcast station that can be selected is stored in advance according to the reception area, and when the user moves, the mobile station that can automatically select the broadcast station based on the position information of the mobile phone is stored. There is also a telephone (for example, see Patent Document 2).
[0003]
[Patent Document 1]
JP-A-05-268151 (page 2-3, FIG. 1-2)
[Patent Document 2]
JP-A-08-162909 (Pages 5-6, FIGS. 1-3)
[0004]
[Problems to be solved by the invention]
However, in the wireless telephone device disclosed in Patent Document 1, the range in which a radio broadcast station can receive radio waves is about 20 to 50 km. Is required, and it is troublesome. Further, the mobile phone (terminal device) disclosed in Patent Document 2 can save the trouble of the above-mentioned channel selection, but requires an enormous amount of data to cover broadcasting stations nationwide and increases the memory capacity. However, there is a problem that the cost is increased. Also, automatic selection of a broadcasting station that is not stored in the memory, such as a newly established broadcasting station, is impossible.
[0005]
The present invention solves such a problem, so that even when the user of the mobile phone moves and the frequency of the receiving broadcasting station changes, the user can automatically tune in and listen to the same program continuously. Another object of the present invention is to provide a portable terminal device at low cost and a radio broadcast receiving method using the device.
[0006]
[Means for Solving the Problems]
A first portable terminal device according to the present invention includes a first radio broadcast receiving unit, a second radio broadcast receiving unit, and a broadcast signal comparing unit that compares broadcast signals received by the first and second radio broadcast receiving units. A reception sensitivity comparison unit that compares reception sensitivities of broadcasts received by the first and second radio broadcast reception units, and a control unit that controls reception of the radio broadcast.
[0007]
Further, the second portable terminal device of the present invention includes a signal input unit of an external radio broadcast receiver, a unit for adjusting a frequency of the external radio broadcast receiver, a second radio broadcast receiving unit, A broadcast signal comparison unit that compares a broadcast signal received by a radio broadcast receiver and a second radio broadcast reception unit, and a reception sensitivity of a broadcast that is received by an external radio broadcast receiver and a second radio broadcast reception unit A reception sensitivity comparison unit and a control unit that controls reception of a radio broadcast are provided.
[0008]
In the portable terminal device, the control unit may include a detecting unit that detects that the portable terminal device has moved based on the position information obtained from the base station. The first and second radio broadcast receiving units may each include an antenna unit, a broadcast receiving unit, and a synthesizer unit, and the portable terminal may be provided as a broadcast receiving unit and a synthesizer unit included in the second radio broadcast receiving unit. The receiver and synthesizer of the device can be used.
[0009]
In the first portable terminal device, the control unit causes the second radio broadcast receiving unit to search for a receivable frequency when the portable terminal device moves while the first radio broadcast receiving unit is receiving the radio broadcast, Radio broadcasts received by the first and second radio broadcast receivers are compared, and if the same broadcast signal is used but the frequency is different and the reception sensitivity of the second radio broadcast receiver is higher, the first radio broadcast is received. The receiving frequency of the unit can be switched to the frequency that the second radio broadcast receiving unit is receiving.
[0010]
Similarly, in the second mobile terminal device, the control unit searches for a frequency that can be received by the second radio broadcast receiving unit when the mobile terminal device moves while receiving a radio broadcast received by an external radio broadcast receiver. Further, the control unit compares the radio broadcasts received by the external radio broadcast receiver and the second radio broadcast receiving unit respectively, and determines the reception sensitivity of the second radio broadcast receiving unit which is the same broadcast signal but has a different frequency. Is higher, the reception frequency of the external radio broadcast receiver can be switched to the frequency being received by the second radio broadcast receiver.
[0011]
According to a first radio broadcast receiving method of the present invention, when a radio broadcast is received by a first radio receiving unit in a mobile terminal device and a movement of the mobile terminal is detected, a second radio in the mobile terminal device is detected. The receiver starts searching for a receivable frequency, compares the radio broadcasts received by the first and second radio receivers, and finds that each radio broadcast has the same broadcast signal but has a different frequency but the second radio broadcast. If the receiving sensitivity of the radio broadcast receiving unit is higher, the receiving frequency of the first radio broadcast receiving unit is switched to the frequency that the second radio broadcast receiving unit is receiving.
[0012]
According to a second method of receiving a radio broadcast of the present invention, an external radio broadcast receiver is connected to a portable terminal device, a radio broadcast is received by the external radio receiving unit, and when the movement of the portable terminal is detected, the portable radio terminal receives the radio broadcast. A search for a receivable frequency is started by the second radio receiving unit in the terminal device, the radio broadcasts received by the external radio receiver and the second radio receiving unit are compared, and the respective radio broadcasts are the same. If the second radio broadcast receiver has a broadcast signal but the frequency is different and the reception sensitivity of the second radio broadcast receiver is higher, the reception frequency of the external radio broadcast receiver is switched to the frequency received by the second radio broadcast receiver.
[0013]
According to the mobile terminal device and the method of receiving a radio broadcast, even if the user of the mobile terminal moves while receiving the radio broadcast, the user can automatically and continuously listen to the program being received.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a block diagram showing a specific example of the portable terminal device of the present invention. The portable terminal device first includes an antenna 1, a switch 2, a transmitting unit 3, a synthesizer unit 4, a receiving unit 5, a control unit 6, a display unit, and a display unit. It has a unit 7, a key operation unit 8, a receiver 9, a microphone 10, a speaker 11, and a position information storage unit 12.
[0015]
The antenna 1 transmits and receives a mobile phone, and is connected to a transmitting unit 3 or a receiving unit 5 of the mobile phone via a switch 2. The transmission frequency of the transmission unit 3 and the reception frequency of the reception unit 5 are adjusted by the synthesizer unit 4. The radio section of the portable telephone is controlled by the control section 6 and performs transmission and reception at a predetermined frequency. The position information transmitted from the base station of the mobile phone is received by the receiving unit and stored in the position information storage unit 12.
[0016]
The display unit 7 is a display unit that displays various information such as a telephone number and time, and the key operation unit 8 includes a numeric keypad for inputting alphanumeric characters and a cross key for moving a cursor. The receiver 9 outputs the other party's voice at the time of talking on the mobile phone, and the microphone 10 collects the voice of the user. The speaker 11 sounds a sound at the time of an incoming call to notify the incoming call, and can also output radio broadcast sound.
[0017]
Further, in this specific example, as components for realizing the broadcast receiving function, a first radio broadcast receiving unit 16 including an antenna 13, a broadcast receiving unit 14, and a synthesizer unit 15, an antenna 17, and a broadcast receiving unit 18 And a second radio broadcast receiving unit 20 including a synthesizer unit 19. Also, a broadcast signal comparing unit 21 for comparing broadcast signals received by the first and second radio broadcast receiving units, and a receiving sensitivity comparing unit for comparing broadcast receiving sensitivities of the first and second radio broadcast receiving units. 22. The first and second radio broadcast receiving units 16 and 20, the broadcast signal comparing unit 21 and the receiving sensitivity comparing unit 22 are controlled by the control unit 6.
[0018]
The antenna 13 is an antenna for receiving a radio broadcast. The receiving frequency is adjusted by the synthesizer unit 15, and the broadcast receiving unit 14 receives a radio broadcast of a predetermined frequency. The first radio broadcast receiving section 16 is a receiving means for a user to first listen to a radio broadcast. The second radio broadcast receiving unit 20 including the antenna 17, the broadcast receiving unit 18, and the synthesizer unit 19 transmits the first radio broadcast while the user is listening to the radio program by the first radio broadcast receiving unit 16. Receivable frequencies other than the reception frequency of the broadcast receiving unit 16 can be searched and received.
[0019]
The broadcast signal comparing unit 21 compares the broadcast signal of the first radio broadcast receiving unit 16 and the broadcast signal of the second radio broadcast receiving unit 20 which are received at different frequencies, and determines whether the broadcast signals are the same. Is determined, that is, whether each received broadcast is from the same broadcast station. The comparison method can be easily realized by, for example, comparing audio data after A / D conversion of a received broadcast signal. The reception sensitivity comparison unit 22 determines that the result of the comparison by the broadcast signal comparison unit 21 indicates that the broadcast signal of the first radio broadcast reception unit 16 and the broadcast signal of the second radio broadcast reception unit 20 received at different frequencies are the same. Then, the reception sensitivity of the first radio broadcast receiver 16 and the reception sensitivity of the second radio broadcast receiver 20 are compared, and the reception frequency with the higher reception sensitivity is set in the first radio broadcast receiver 16. The comparison of the reception sensitivity can be easily realized by comparing the strength of the reception level.
[0020]
With the above configuration, even if the user moves, the reception frequency is automatically tuned, so that the optimum reception state can be continuously obtained without performing a troublesome operation such as manual tuning.
[0021]
An example of the operation of the portable terminal device of the above specific example will be described with reference to the flowchart of FIG. First, the user turns on the portable terminal device (S101), sets a radio reception mode (S101), selects a radio broadcast station (S102), and starts reception by the first radio broadcast reception unit (S103). The location information is requested from the base station of the portable terminal device (S105).
[0022]
If there is no change in the position information, the portable terminal device continues receiving the selected radio broadcast station (S106, S107). If there is a change in the location information, it is considered that the user has moved, and a broadcast frequency receivable by the second radio broadcast receiving unit is searched (S106, S108). The broadcast receiving unit compares whether the frequency is the same as the frequency being received (S109).
If the comparison result is the same as the frequency being received by the first radio broadcast receiving unit, the second radio broadcast receiving unit searches again for a receivable frequency (S108).
[0023]
If the comparison result is different from the frequency being received by the first radio broadcast receiving unit, the received data (broadcast signal) of the first radio broadcast receiving unit and the second radio broadcast receiving unit are compared (S110). . If the received data (broadcast signal) is different, the first radio broadcast receiving unit determines that the broadcast station is not the same as the broadcast station being received (S111), and the broadcast receivable by the second radio broadcast receiver again. The search for the frequency is started (S108). If the received data (broadcast signal) is the same, it is determined that the broadcast station being received by the first radio broadcast receiver and the broadcast station being received by the second radio broadcast receiver are the same (S111). The reception sensitivity of the broadcast received by the first radio broadcast receiver is compared with the reception sensitivity of the broadcast received by the second radio broadcast receiver (S112). As a result of the comparison of the reception sensitivities, if the broadcast being received by the first radio broadcast receiver has higher reception sensitivity (NO in S113), the first radio broadcast receiver continues the reception (S115). If the broadcast being received by the second radio broadcast receiver has higher reception sensitivity, the reception frequency of the first radio broadcast receiver is changed to the reception frequency of the second radio broadcast receiver (S114). The radio broadcast is received (S115).
[0024]
According to the above operation, when the user of the portable terminal device moves, tuning is automatically performed even if it is necessary to change the frequency of the receiving broadcasting station in order to continuously listen to the same program as it is. It becomes possible. Note that the comparison of the frequency and the comparison of the reception data (broadcast signal) may be reversed from the above order.
[0025]
Next, another specific example of the present invention will be described with reference to the block diagram of FIG. Here, the second radio broadcast receiving unit 20 including the antenna 17, the broadcast receiving unit 18, and the synthesizer unit 19 in the above-described example has a configuration including the antenna 17 and the switch 23. While the user is listening to the radio broadcast, the portable terminal device is in a state of waiting for an incoming call and performs intermittent reception. Therefore, when the portable terminal device does not perform intermittent reception, the receiving unit 5 and the synthesizer unit 4 of the portable terminal device can be used as a receiving circuit of the second radio broadcast receiving unit 20. For this reason, the number of circuits can be reduced and the cost can be further reduced.
[0026]
Still another specific example will be described with reference to the block diagram of FIG. Here, an external radio broadcast receiver is used as the first radio broadcast receiver 16. To this end, a signal input means 24 of the external radio broadcast receiver and a frequency adjusting means 25 of the external radio broadcast receiver are provided. FIG. 4 shows a configuration in which the second radio broadcast receiving unit 20 uses the receiving unit 5 and the synthesizer unit 4 of the portable terminal device as a receiving circuit as shown in FIG. Of course, a configuration including a receiving unit and a synthesizer is also possible. The frequency adjusting means 25 is controlled by the control unit 6.
[0027]
【The invention's effect】
In the present invention, when a user listening to a radio program moves by the portable terminal device, the same program from the broadcast station to which the user has moved can be automatically selected. This eliminates the need for providing an easy-to-use portable terminal device with a radio broadcast receiving function.
[0028]
In addition, since automatic tuning is performed by two radio broadcast receiving units, it is not necessary to previously store information on a broadcast station or the like in a memory, and cost can be reduced by reducing memory capacity.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration example of a portable terminal device of the present invention.
FIG. 2 is a flowchart illustrating an example of a radio broadcast receiving method according to the present invention.
FIG. 3 is a block diagram showing another configuration example of the portable terminal device of the present invention.
FIG. 4 is a block diagram showing still another configuration example of the portable terminal device of the present invention.
[Explanation of symbols]
1, 13, 17 Antenna 2 Switch 3 Transmitter 4, 15, 19 Synthesizer 5 Receiver 6 Controller 7 Display 8 Key operation unit 12 Position information storage unit 14, 18 Broadcast receiver 16 First radio broadcast receiver 20 second radio broadcast receiving section 21 broadcast signal comparing section 22 receiving sensitivity comparing section

Claims (13)

ラジオ放送受信機能を備えた携帯端末装置であって、
第１のラジオ放送受信部と、
第２のラジオ放送受信部と、
前記第１と第２のラジオ放送受信部が受信する放送信号を比較する放送信号比較部と、
前記第１と第２のラジオ放送受信部が受信する放送の受信感度を比較する受信感度比較部と、
ラジオ放送の受信を制御する制御部と、
を備えることを特徴とする携帯端末装置。A mobile terminal device having a radio broadcast receiving function,
A first radio broadcast receiving unit;
A second radio broadcast receiving unit;
A broadcast signal comparing unit that compares broadcast signals received by the first and second radio broadcast receiving units;
A reception sensitivity comparison unit that compares reception sensitivities of broadcasts received by the first and second radio broadcast reception units;
A control unit for controlling reception of a radio broadcast;
A portable terminal device comprising: 前記制御部は基地局から入手した位置情報に基づき前記携帯端末装置が移動したことを検知する検知手段を備える請求項１記載の携帯端末装置。The mobile terminal device according to claim 1, wherein the control unit includes a detection unit configured to detect that the mobile terminal device has moved based on position information obtained from a base station. 前記第１と第２のラジオ放送受信部は、それぞれアンテナ部、放送受信部、およびシンセサイザ部を備える請求項１記載の携帯端末装置。The mobile terminal device according to claim 1, wherein the first and second radio broadcast receiving units each include an antenna unit, a broadcast receiving unit, and a synthesizer unit. 前記第２のラジオ放送受信部が備える放送受信部およびシンセサイザ部は前記携帯端末装置の受信部とシンセサイザ部である請求項３記載の携帯端末装置。The portable terminal device according to claim 3, wherein the broadcast receiving unit and the synthesizer unit included in the second radio broadcast receiving unit are a receiving unit and a synthesizer unit of the portable terminal device. 前記制御部は第１のラジオ放送受信部がラジオ放送受信中に前記携帯端末装置が移動したとき第２のラジオ放送受信部に受信可能な周波数を検索させる請求項１または２記載の携帯端末装置。3. The mobile terminal device according to claim 1, wherein the control unit causes the second radio broadcast receiving unit to search for a receivable frequency when the mobile terminal device moves while the first radio broadcast receiving unit is receiving a radio broadcast. . 前記制御部は第１及び第２のラジオ放送受信部がそれぞれ受信するラジオ放送を比較し、同一の放送信号であるが周波数が異なり第２のラジオ放送受信部の受信感度のほうが高い場合は第１のラジオ放送受信部の受信周波数を第２のラジオ放送受信部が受信している周波数に切り替える請求項５記載の携帯端末装置。The control unit compares the radio broadcasts received by the first and second radio broadcast receiving units, respectively. If the same broadcast signal but the frequency is different and the receiving sensitivity of the second radio broadcast receiving unit is higher, 6. The mobile terminal device according to claim 5, wherein the reception frequency of the first radio broadcast receiving unit is switched to a frequency that is received by the second radio broadcast receiving unit. ラジオ放送受信機能を備えた携帯端末装置であって、
外部のラジオ放送受信器の信号入力手段と、
外部のラジオ放送受信器の周波数を調整する手段と、
第２のラジオ放送受信部と、
前記外部のラジオ放送受信器と第２のラジオ放送受信部が受信する放送信号を比較する放送信号比較部と、
前記外部のラジオ放送受信器と第２のラジオ放送受信部が受信する放送の受信感度を比較する受信感度比較部と、
ラジオ放送の受信を制御する制御部と、
を備えることを特徴とする携帯端末装置。A mobile terminal device having a radio broadcast receiving function,
Signal input means for an external radio broadcast receiver;
Means for adjusting the frequency of an external radio broadcast receiver;
A second radio broadcast receiving unit;
A broadcast signal comparing unit that compares a broadcast signal received by the external radio broadcast receiver and a second radio broadcast receiving unit;
A reception sensitivity comparison unit that compares reception sensitivities of broadcasts received by the external radio broadcast receiver and a second radio broadcast reception unit;
A control unit for controlling reception of a radio broadcast;
A portable terminal device comprising: 前記制御部は基地局から入手した位置情報に基づき前記携帯端末装置が移動したことを検知する検知手段を備える請求項７記載の携帯端末装置。The mobile terminal device according to claim 7, wherein the control unit includes a detection unit configured to detect that the mobile terminal device has moved based on position information obtained from a base station. 前記第２のラジオ放送受信部が備える放送受信部およびシンセサイザ部は前記携帯端末装置の受信部とシンセサイザ部である請求項７記載の携帯端末装置。The portable terminal device according to claim 7, wherein the broadcast receiving unit and the synthesizer unit included in the second radio broadcast receiving unit are a receiving unit and a synthesizer unit of the portable terminal device. 前記制御部は外部のラジオ放送受信器が受信するラジオ放送を受信中に前記携帯端末装置が移動したとき第２のラジオ放送受信部に受信可能な周波数を検索させる請求項７または８記載の携帯端末装置。9. The portable device according to claim 7, wherein the control unit causes the second radio broadcast receiving unit to search for a receivable frequency when the portable terminal device moves while receiving a radio broadcast received by an external radio broadcast receiver. Terminal device. 前記制御部は外部のラジオ放送受信器及び第２のラジオ放送受信部がそれぞれ受信するラジオ放送を比較し、同一の放送信号であるが周波数が異なり第２のラジオ放送受信部の受信感度のほうが高い場合は外部のラジオ放送受信器の受信周波数を第２のラジオ放送受信部が受信している周波数に切り替える請求項１０記載の携帯端末装置。The controller compares the radio broadcasts received by the external radio broadcast receiver and the second radio broadcast receiver, respectively, and determines that the same broadcast signal but a different frequency has a higher reception sensitivity than the second radio broadcast receiver. The mobile terminal device according to claim 10, wherein when the frequency is higher, the reception frequency of the external radio broadcast receiver is switched to the frequency being received by the second radio broadcast receiver. 携帯端末装置を用いたラジオ放送受信方法であって、
前記携帯端末装置中の第１のラジオ受信部によってラジオ放送を受信し、
該携帯端末の移動を検知したとき該携帯端末装置中の第２のラジオ受信部によって受信可能な周波数の検索を開始し、
前記第１及び第２のラジオ受信部がそれぞれ受信するラジオ放送を比較し、
前記それぞれのラジオ放送が同一の放送信号を有するが周波数が異なり第２のラジオ放送受信部の受信感度のほうが高い場合は第１のラジオ放送受信部の受信周波数を第２のラジオ放送受信部が受信している周波数に切り替える、
ことを特徴とするラジオ放送受信方法。A radio broadcast receiving method using a mobile terminal device,
Receiving a radio broadcast by a first radio receiving unit in the portable terminal device;
When detecting the movement of the mobile terminal, start searching for a receivable frequency by a second radio receiving unit in the mobile terminal device,
Comparing the radio broadcasts respectively received by the first and second radio receivers,
If the respective radio broadcasts have the same broadcast signal but different frequencies and the receiving sensitivity of the second radio broadcast receiving unit is higher, the receiving frequency of the first radio broadcast receiving unit is changed by the second radio broadcast receiving unit. Switch to the receiving frequency,
A radio broadcast receiving method, comprising: 携帯端末装置を用いたラジオ放送受信方法であって、
外部のラジオ放送受信器を前記携帯端末装置に接続し該外部のラジオ受信部によってラジオ放送を受信し、
該携帯端末の移動を検知したとき該携帯端末装置中の第２のラジオ受信部によって受信可能な周波数の検索を開始し、
前記外部のラジオ受信器及び第２のラジオ受信部がそれぞれ受信するラジオ放送を比較し、
前記それぞれのラジオ放送が同一の放送信号を有するが周波数が異なり第２のラジオ放送受信部の受信感度のほうが高い場合は前記外部のラジオ放送受信器の受信周波数を第２のラジオ放送受信部が受信している周波数に切り替える、
ことを特徴とするラジオ放送受信方法。A radio broadcast receiving method using a mobile terminal device,
Connecting an external radio broadcast receiver to the portable terminal device and receiving a radio broadcast by the external radio receiving unit,
When detecting the movement of the mobile terminal, start searching for a receivable frequency by a second radio receiving unit in the mobile terminal device,
Comparing the radio broadcasts received by the external radio receiver and the second radio receiver, respectively;
If the respective radio broadcasts have the same broadcast signal but different frequencies and the reception sensitivity of the second radio broadcast receiver is higher, the reception frequency of the external radio broadcast receiver is changed by the second radio broadcast receiver. Switch to the receiving frequency,
A radio broadcast receiving method, comprising:
JP2002344120A 2002-11-27 2002-11-27 Portable terminal and radio broadcast reception method Pending JP2004179988A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101813547B1 (en) 2017-11-22 2018-01-30 현대자동차주식회사 Audio apparatus, vehicle having the same and method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101813547B1 (en) 2017-11-22 2018-01-30 현대자동차주식회사 Audio apparatus, vehicle having the same and method thereof

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