JPH0750789A - Small-sized portable television receiver - Google Patents
Small-sized portable television receiverInfo
- Publication number
- JPH0750789A JPH0750789A JP19438993A JP19438993A JPH0750789A JP H0750789 A JPH0750789 A JP H0750789A JP 19438993 A JP19438993 A JP 19438993A JP 19438993 A JP19438993 A JP 19438993A JP H0750789 A JPH0750789 A JP H0750789A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- signal amplifier
- amplifier
- unit
- reception state
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ロッドアンテナと電池
等による駆動可能な電源回路を有し、屋外等で使用可能
な小型携帯用テレビ関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small portable television having a rod antenna and a power source circuit which can be driven by a battery or the like and which can be used outdoors.
【０００２】[0002]
【従来の技術】図３乃至図５は、従来の小型携帯用テレ
ビを示す。図３は、従来の小型携帯用テレビでＲＦ信号
増幅器をもたないもののブロック図であり、１はロッド
アンテナ、２はチューナ、３はＩＦ回路部、４は音声回
路部、５はビデオクロマ・インターフェーイス回路部、
６は表示回路部、７はスピーカ、８は選局マイコン部で
あり、また、ａはロッドアンテナで拾ったＲＦ信号を、
ｂはＩＦ信号を、ｃ，ｃ’は音声信号を、ｄは映像信号
を、ｅ，ｆ，ｇはＲＧＢ信号をそれぞれ表す。また、
ｈ，ｉ，ｊ，ｋは、選局マイコンから各部を制御する信
号を表す。2. Description of the Related Art FIGS. 3 to 5 show a conventional small portable television. FIG. 3 is a block diagram of a conventional small portable television without an RF signal amplifier. 1 is a rod antenna, 2 is a tuner, 3 is an IF circuit section, 4 is an audio circuit section, 5 is a video chroma Interface circuit part,
6 is a display circuit unit, 7 is a speaker, 8 is a tuning microcomputer unit, and a is an RF signal picked up by a rod antenna,
b represents an IF signal, c and c ′ represent an audio signal, d represents a video signal, and e, f and g represent RGB signals. Also,
h, i, j, and k represent signals that control each unit from the channel selection microcomputer.
【０００３】図４は、従来のＲＦ信号増幅器を備えた小
型携帯用テレビの例を示す。１〜８は、図３に同じであ
り、９はＲＦ信号増幅器である。また、ａ’は、前記Ｒ
Ｆ信号増幅器９により増幅されたＲＦ信号を表す。その
他は、図３に同じである。図５も、従来のＲＦ信号増幅
器を備えた小型携帯用テレビの例を示す。１〜９は、図
４に同じであり、１２はＲＦ信号増幅器切替部、１３は
増幅器切替手動制御部である。ａ’’は、前記ＲＦ信号
増幅器９により増幅されたＲＦ信号ａ’とロッドアンテ
ナからのＲＦ信号ａとをＲＦ信号増幅器切替部１２で選
択した後のＲＦ信号を表す。ｎ１，ｎ２は、前記ＲＦ信
号増幅器切替部１２を制御する信号を表す。ｏは、前記
ＲＦ信号増幅器の電源を入／切するための制御信号を表
す。その他は、図３、図４に同じである。FIG. 4 shows an example of a small portable television equipped with a conventional RF signal amplifier. 1 to 8 are the same as those in FIG. 3, and 9 is an RF signal amplifier. In addition, a ′ is the R
The RF signal amplified by the F signal amplifier 9 is shown. Others are the same as in FIG. FIG. 5 also shows an example of a small portable television equipped with a conventional RF signal amplifier. 1 to 9 are the same as those in FIG. 4, 12 is an RF signal amplifier switching unit, and 13 is an amplifier switching manual control unit. a ″ represents an RF signal after the RF signal a ′ amplified by the RF signal amplifier 9 and the RF signal a from the rod antenna are selected by the RF signal amplifier switching unit 12. n1 and n2 represent signals for controlling the RF signal amplifier switching unit 12. o represents a control signal for turning on / off the power of the RF signal amplifier. Others are the same as those in FIGS. 3 and 4.
【０００４】従来は図３のように、ロッドアンテナ１の
次にはチューナ２が配置されその間にＲＦ信号増幅器が
配置されていないものか、図４のようにＲＦ信号増幅器
９を配置していても受信状態を最良に保つ為の工夫を持
たず、ＲＦ信号増幅器９が常に動作状態のものや、図５
のように受信状態を最良に保つ為の工夫を持つが、手動
操作によって切り替えるものであった。Conventionally, as shown in FIG. 3, the tuner 2 is arranged next to the rod antenna 1 and the RF signal amplifier is not arranged between them, or the RF signal amplifier 9 is arranged as shown in FIG. 5 does not have a device for keeping the reception state at its best, and the RF signal amplifier 9 is always in the operating state, as shown in FIG.
There is a device to keep the reception state at its best as in, but it was switched by manual operation.
【０００５】[0005]
【発明が解決しようとする課題】図３の従来の小型携帯
用テレビでは、電界強度が非常に弱い地域ではロッドア
ンテナによる受信状態が悪く非常にノイズの多い画像と
なり、携帯性の利点が実使用上無くなってしまうという
問題点があった。また、 図４の小型携帯用テレビの場
合は、ＲＦ信号増幅器９が常に動作状態であるため、電
界強度が非常に強い地域では十分なレベルのＲＦ信号を
さらに増幅器で増幅してしまうため、チューナの許容入
力を越えてしまい混変調を起こし乱れた画像となり、こ
れもまた、最適の受信状態が得られないという問題点が
あった。さらに、図５の小型携帯用テレビの場合には、
ＲＦ信号増幅器９の制御が手動であるため、受信場所の
電界強度に合わせて、該ＲＦ信号増幅器９の入／切をス
イッチを切り替えてやることで行わねばならないという
煩雑さがあった。本発明は、上記従来の問題点に鑑みて
なしたものであり、上記問題点を解決した小型携帯用テ
レビを提供することを目的とするものである。In the conventional small portable television shown in FIG. 3, in a region where the electric field strength is very weak, the reception state by the rod antenna is poor and the image is very noisy, so that the advantage of portability is actually used. There was a problem that it disappeared. Further, in the case of the small portable television shown in FIG. 4, the RF signal amplifier 9 is always in the operating state, so that the RF signal of a sufficient level is further amplified by the amplifier in an area where the electric field strength is very strong. However, there is a problem that an optimum reception state cannot be obtained due to cross modulation resulting in a disturbed image. Furthermore, in the case of the small portable TV shown in FIG.
Since the control of the RF signal amplifier 9 is manual, there is a trouble that the RF signal amplifier 9 has to be turned on / off by switching the switch in accordance with the electric field strength at the receiving place. The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a small portable television that solves the above problems.
【０００６】[0006]
【課題を解決するための手段】上記従来の小型テレビの
問題点に鑑み、ロッドアンテナと電池等による駆動可能
な電源回路を有し、屋外等で使用可能な小型携帯用テレ
ビにおいて、ロッドアンテナに直に設けられたＲＦ信号
増幅器と、テレビ放送受信時の受信状態を検知する受信
状態検知部と、該受信状態検知部によって判明した受信
状態より前記ＲＦ信号増幅器を動作させるか否かを判断
し、前記ＲＦ信号増幅器の入／切を制御するＲＦ信号増
幅器制御部と、該ＲＦ信号増幅器制御部からの制御信号
によって前記ＲＦ信号増幅器の入／切を行うＲＦ信号増
幅器切替部とを設け、テレビ放送受信時の受信状態を前
記受信状態検知部において検知し、その結果に基づいて
前記ＲＦ信号増幅器制御部においてＲＦ信号増幅器の入
／切を制御し、自動的にＲＦ信号増幅器を最良の受信状
態を保つように制御することによって、上記従来の問題
点を解決するものである。In view of the above problems of the conventional small-sized television, a rod antenna is used in a small portable television that has a power circuit that can be driven by a rod antenna and a battery and can be used outdoors. An RF signal amplifier provided directly, a reception state detection unit for detecting a reception state at the time of receiving a television broadcast, and a reception state determined by the reception state detection unit to determine whether to operate the RF signal amplifier. An RF signal amplifier control unit for controlling ON / OFF of the RF signal amplifier and an RF signal amplifier switching unit for turning ON / OFF of the RF signal amplifier according to a control signal from the RF signal amplifier control unit are provided. The reception state at the time of receiving the broadcast is detected by the reception state detection unit, and based on the result, the RF signal amplifier control unit controls ON / OFF of the RF signal amplifier, By controlling the RF signal amplifier to maintain the best receiving state, being directed to solve the above problems.
【０００７】[0007]
【作用】まず、受信状態検知部において、現在のその場
所での受信状態を検知し、それを示す信号をＲＦ信号増
幅器制御部へ送り、次に、該ＲＦ信号増幅器制御部にお
いて、現在の受信しているその場所そのテレビ放送の電
界強度を推定し、その電界強度状態よりＲＦ信号増幅器
が必要かどうかを判断し、それを制御する信号を作成
し、ＲＦ信号増幅器切替部へその信号を送る。そして、
該ＲＦ信号増幅器切替部において、ＲＦ信号増幅器を制
御信号をもとに動作させるか、動作させずにスルーでチ
ューナヘ入力するかを切り替える。First, the reception state detection unit detects the current reception state at that location, sends a signal indicating it to the RF signal amplifier control unit, and then the RF signal amplifier control unit receives the current reception state. At that place, the electric field strength of the TV broadcast is estimated, it is judged from the electric field strength state whether or not an RF signal amplifier is necessary, a signal for controlling it is created, and the signal is sent to the RF signal amplifier switching section. . And
The RF signal amplifier switching section switches between operating the RF signal amplifier based on the control signal and inputting it to the tuner through without operating it.
【０００８】[0008]
【実施例】図１及び図２は本発明の実施例を示し、図１
は本発明に係る小型携帯用テレビのブロック図を示し、
図２は同細部の実施例のブロック図を示す。図１におい
て、１はロッドアンテナ、２はチューナ、３はＩＦ回路
部、４は音声回路部、５はビデオクロマ・インターフェ
ーイス回路部、６は表示回路部、７はスピーカ、８は選
局マイコン部、９はＲＦ信号増幅器、１０は受信状態検
知部、１１はＲＦ信号増幅器制御部、１２はＲＦ信号増
幅器切替部である。また、ａはロッドアンテナで拾った
ＲＦ信号を、ａ’は前記ＲＦ信号増幅器９により増幅さ
れたＲＦ信号を、ｂはＩＦ信号を、ｃ，ｃ’は音声信号
を、ｄは映像信号を、ｅ，ｆ，ｇはＲＧＢ信号をそれぞ
れ表す。また、ｈ，ｉ，ｊ，ｋは、選局マイコン部８か
ら各部を制御する信号を、ｎ１，ｎ２は、前記ＲＦ信号
増幅器切替部１２を制御する信号を、さらにｏは、前記
ＲＦ信号増幅器９の電源を入／切するための制御信号を
表す。また、ｌはチューナ２からのＲＦＡＧＣ信号を表
し、ｍは信号ｌをもとに受信状態を表す信号を示す。1 and 2 show an embodiment of the present invention.
Shows a block diagram of a small portable TV according to the present invention,
FIG. 2 shows a block diagram of an embodiment of the same details. In FIG. 1, 1 is a rod antenna, 2 is a tuner, 3 is an IF circuit unit, 4 is an audio circuit unit, 5 is a video chroma / interface circuit unit, 6 is a display circuit unit, 7 is a speaker, and 8 is a channel selection microcomputer. Reference numeral 9 is an RF signal amplifier, 10 is a reception state detection unit, 11 is an RF signal amplifier control unit, and 12 is an RF signal amplifier switching unit. Further, a is an RF signal picked up by the rod antenna, a ′ is an RF signal amplified by the RF signal amplifier 9, b is an IF signal, c and c ′ are audio signals, and d is a video signal. e, f, and g represent RGB signals, respectively. Further, h, i, j, k are signals for controlling each part from the tuning microcomputer unit 8, n1, n2 are signals for controlling the RF signal amplifier switching unit 12, and o is the RF signal amplifier. 9 represents a control signal for turning on / off the power of the device 9. Further, 1 represents the RFAGC signal from the tuner 2, and m represents a signal representing the reception state based on the signal 1.
【０００９】図２は、図１に示したは本発明に係る小型
携帯用テレビの細部の実施例のブロック図を示したもの
であり、この図２に示すように受信状態検知部１０は電
圧比較部１０−１と電圧設定部１０−２とから構成さ
れ、また、ＲＦ信号増幅器制御部１１は、ＲＦ信号選択
制御部１１−１と増幅器電源制御部１１−２とから構成
される。さらに、ＲＦ信号増幅器切替部１２はＲＦ信号
選択部１２−１と増幅器電源切替部１２−２から構成さ
れる。この図２に示すように、受信状態検知部１０大き
く二つのブロックより構成され、電圧設定部１０−２に
おいて、弱信号状態の時のＲＦＡＧＣ電圧（そのときの
信号をｌ’で表す。）を設定しておき、チューナ２より
ＲＦＡＧＣ電圧の信号ｌをもらい、この二つの電圧を電
圧比較部１０−１により比較し、ＲＦ信号増幅器９が必
要な電界強度かどうかの信号ｍを作成し、ＲＦ信号増幅
器制御部１１へ入力する。 該ＲＦ信号増幅器制御部１
１は、ＲＦ信号選択部１２−１を制御する信号ｎ１を作
成するＲＦ信号選択制御部１１−１と、ＲＦ増幅器９の
電源を制御するための信号ｎ２を作成する増幅器電源制
御部１１−２より構成されているが、該ＲＦ信号増幅器
制御部１１では信号ｍをもとに現在受信している場所に
おける放送電波の電界強度を推定し、その推定した電界
強度が強電界であれば、ＲＦ信号増幅器９を動作する必
要がなく、逆にチューナ２ヘ過入力による混変調を起こ
してしまうため、ＲＦ信号増幅器９を切の状態にするべ
く制御する信号ｎ２を増幅器電源制御部１１−２におい
て作成し、増幅器電源切替部１２−２へ入力するととも
に、ＲＦ信号選択制御部１１−１においてＲＦ信号選択
部１２−１をａのロッドアンテナ１側へ切り替えるべく
制御する信号ｎ１を作成し出力する。また、電界強度が
弱電界と推定した場合は、上記と逆に、ＲＦ信号増幅器
９を入の状態に設定するべく制御信号ｎ２を設定し該増
幅器電源切替部１２−２へ入力するとともに、該ＲＦ信
号選択部１２−１を該ＲＦ増幅器９の出力ａ’側に切り
替えるべく信号ｎ１を力する。FIG. 2 is a block diagram of a detailed embodiment of the small portable television according to the present invention shown in FIG. 1. As shown in FIG. The comparison unit 10-1 and the voltage setting unit 10-2 are included, and the RF signal amplifier control unit 11 includes an RF signal selection control unit 11-1 and an amplifier power supply control unit 11-2. Further, the RF signal amplifier switching unit 12 includes an RF signal selection unit 12-1 and an amplifier power supply switching unit 12-2. As shown in FIG. 2, the reception state detection unit 10 is largely composed of two blocks, and in the voltage setting unit 10-2, the RFAGC voltage in the weak signal state (the signal at that time is represented by 1 ') is shown. The signal A of the RFAGC voltage is received from the tuner 2 in advance, the two voltages are compared by the voltage comparison unit 10-1, and the signal m indicating whether the RF signal amplifier 9 has the necessary electric field strength is generated. Input to the signal amplifier control unit 11. The RF signal amplifier controller 1
Reference numeral 1 denotes an RF signal selection control unit 11-1 that creates a signal n1 that controls the RF signal selection unit 12-1, and an amplifier power supply control unit 11-2 that creates a signal n2 that controls the power supply of the RF amplifier 9. The RF signal amplifier control unit 11 estimates the electric field strength of the broadcast radio wave at the place where it is currently received based on the signal m, and if the estimated electric field strength is a strong electric field, the Since it is not necessary to operate the signal amplifier 9 and, conversely, cross-modulation due to excessive input to the tuner 2 occurs, a signal n2 for controlling the RF signal amplifier 9 to be turned off is supplied to the amplifier power supply control unit 11-2. A signal n1 that is generated and input to the amplifier power supply switching unit 12-2 and is controlled by the RF signal selection control unit 11-1 to switch the RF signal selection unit 12-1 to the rod antenna 1 side of a. Creates and output. When the electric field strength is estimated to be a weak electric field, conversely to the above, the control signal n2 is set so as to set the RF signal amplifier 9 to the ON state and is input to the amplifier power supply switching unit 12-2. The signal n1 is applied to switch the RF signal selection unit 12-1 to the output a'side of the RF amplifier 9.
【００１０】また、ＲＦ信号増幅器切替部１２はＲＦ信
号選択部１２−１と増幅器電源切替部１２−２とから構
成され、前記電源制御部１１−２からの信号ｎ２もと
に、強電界時はＲＦ信号増幅器９の電源を切とし、選択
制御部１１−１からの信号ｎ１によりロッドアンテナ１
とチューナ２を直結する経路に切り替え、また、逆に弱
電界時はＲＦ信号増幅器９を入の状態に切り替え、該Ｒ
Ｆ信号増幅器９からの信号ａ’をチューナ２に入力する
べく選択する。このため、強電界時も弱電界時も自動的
に常に受信状態を最適に保つようＲＦ増幅器９が制御さ
れる。The RF signal amplifier switching unit 12 is composed of an RF signal selecting unit 12-1 and an amplifier power supply switching unit 12-2, and based on the signal n2 from the power supply control unit 11-2, a strong electric field is generated. Turns off the power of the RF signal amplifier 9, and the rod antenna 1 receives the signal n1 from the selection control unit 11-1.
And the tuner 2 are directly connected to each other, and conversely, when the electric field is weak, the RF signal amplifier 9 is switched to the on state.
The signal a ′ from the F signal amplifier 9 is selected for input to the tuner 2. For this reason, the RF amplifier 9 is controlled so that the reception state is always kept optimal regardless of the strong electric field or the weak electric field.
【００１１】[0011]
【発明の効果】小型携帯用テレビでは、屋外においてロ
ッドアンテナによって受信することが多いが、このよう
な場合電界強度の弱いところであることが多く、図３の
ようにＲＦ信号増幅器を持たぬ従来の小型携帯用テレビ
では、十分な受信感度を確保することが非常に難しかっ
たが、本発明を用いるとＲＦ信号増幅器によって、弱信
号をテレビ放送を受信するに十分なレベルまで増幅し、
感度を向上することができる。また、図４ようにＲＦ信
号増幅器は備えているが常に動作状態にあるような従来
の小型携帯用テレビでは、乗り物等によって移動中に、
たまたま、強電界の地域を通過した場合、ＲＦ信号増幅
器が動作しているが故に、十分なレベルのＲＦ信号をさ
らに増幅器で増幅してしまうため、チューナの許容入力
を越えてしまい、混変調を起こし乱れた画像となること
が予想されるが、本発明を用いると、自動的に電界強度
の強い地域であること検知し、ＲＦ信号増幅器を切り、
増幅動作なしにチューナへ入力することができ、混変調
を起こす事なく最良の受信状態を保つことができる。さ
らに、図５の従来のテレビのように、電界強度の異なる
地域に移動する毎にＲＦ信号増幅器の入／切を行い最良
の受信感度を常に手動で切り替えて調整しなければなら
ないという煩わしさもなくなる。In a small portable television, a rod antenna is often used outdoors for reception, but in such a case, the electric field strength is often weak, and the conventional portable telephone does not have an RF signal amplifier as shown in FIG. In a small portable television, it was very difficult to secure sufficient reception sensitivity, but when the present invention is used, the RF signal amplifier amplifies a weak signal to a level sufficient to receive a television broadcast,
The sensitivity can be improved. Further, as shown in FIG. 4, in a conventional small portable television that is equipped with an RF signal amplifier but is always in an operating state, when moving by a vehicle or the like,
By chance, when passing through a strong electric field area, the RF signal amplifier is operating, so the RF signal of a sufficient level is further amplified by the amplifier, which exceeds the allowable input of the tuner and causes cross modulation. Although it is expected that the image will be disturbed and disturbed, when the present invention is used, it is automatically detected that the area has a high electric field strength, and the RF signal amplifier is turned off.
It is possible to input to the tuner without amplification operation, and it is possible to maintain the best reception state without causing cross modulation. Further, unlike the conventional television shown in FIG. 5, it is not necessary to turn on / off the RF signal amplifier each time the user moves to a region where the electric field strength is different and always manually switch and adjust the best receiving sensitivity. .
【図１】本発明に係る小型携帯用テレビのブロック図を
示す。FIG. 1 shows a block diagram of a small portable television according to the present invention.
【図２】本発明に係る小型携帯用テレビの細部の実施例
を示したブロック図である。FIG. 2 is a block diagram showing a detailed example of a small portable television according to the present invention.
【図３】従来の小型携帯用テレビでＲＦ信号増幅器をも
たないもののブロック図である。FIG. 3 is a block diagram of a conventional small portable television without an RF signal amplifier.
【図４】従来のＲＦ信号増幅器を備えた小型携帯用テレ
ビの例を示すブロック図である。FIG. 4 is a block diagram showing an example of a small portable television including a conventional RF signal amplifier.
【図５】従来のＲＦ信号増幅器を備えた小型携帯用テレ
ビの例を示すブロック図である。FIG. 5 is a block diagram showing an example of a small portable television including a conventional RF signal amplifier.
１ ロッドアンテナ ９ ＲＦ信号増幅器 １０ 受信状態検知部 １１ ＲＦ信号増幅器制御部 １２ ＲＦ信号増幅器切替部 1 Rod Antenna 9 RF Signal Amplifier 10 Reception State Detection Unit 11 RF Signal Amplifier Control Unit 12 RF Signal Amplifier Switching Unit
Claims (1)
な電源回路を有し、屋外等で使用可能な小型携帯用テレ
ビにおいて、 ロッドアンテナに直に設けられたＲＦ信号増幅器と、 テレビ放送受信時の受信状態を検知する受信状態検知部
と、 該受信状態検知部によって判明した受信状態より前記Ｒ
Ｆ信号増幅器を動作させるか否かを判断し、前記ＲＦ信
号増幅器の入／切を制御するＲＦ信号増幅器制御部と、 該ＲＦ信号増幅器制御部からの制御信号によって前記Ｒ
Ｆ信号増幅器の入／切を行うＲＦ信号増幅器切替部とを
備えたことを特徴とする小型携帯用テレビ。1. A small portable television having a rod antenna and a power supply circuit that can be driven by a battery or the like, which can be used outdoors or the like, and an RF signal amplifier provided directly to the rod antenna and a television receiver for receiving a television broadcast. The reception state detection unit for detecting the reception state, and the reception state detected by the reception state detection unit
An RF signal amplifier control unit for determining whether to operate the F signal amplifier and controlling ON / OFF of the RF signal amplifier, and the R signal by the control signal from the RF signal amplifier control unit.
A small portable television comprising an RF signal amplifier switching unit for turning on / off the F signal amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19438993A JPH0750789A (en) | 1993-08-05 | 1993-08-05 | Small-sized portable television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19438993A JPH0750789A (en) | 1993-08-05 | 1993-08-05 | Small-sized portable television receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0750789A true JPH0750789A (en) | 1995-02-21 |
Family
ID=16323790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19438993A Pending JPH0750789A (en) | 1993-08-05 | 1993-08-05 | Small-sized portable television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0750789A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6377056B1 (en) | 1998-08-26 | 2002-04-23 | Hitachi, Ltd. | Electrostatic capacitance type dynamical quantity sensor |
| US6640643B2 (en) | 2001-07-18 | 2003-11-04 | Denso Corporation | Capacitive pressure sensor with multiple capacitive portions |
| US6744258B2 (en) | 2001-07-11 | 2004-06-01 | Denso Corporation | Capacitive sensor apparatus |
| KR20040048531A (en) * | 2002-12-03 | 2004-06-10 | 삼성전기주식회사 | Apparatus for supplying power of outer amplifier in digital broadcasting receiver |
-
1993
- 1993-08-05 JP JP19438993A patent/JPH0750789A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6377056B1 (en) | 1998-08-26 | 2002-04-23 | Hitachi, Ltd. | Electrostatic capacitance type dynamical quantity sensor |
| US6744258B2 (en) | 2001-07-11 | 2004-06-01 | Denso Corporation | Capacitive sensor apparatus |
| US6640643B2 (en) | 2001-07-18 | 2003-11-04 | Denso Corporation | Capacitive pressure sensor with multiple capacitive portions |
| KR20040048531A (en) * | 2002-12-03 | 2004-06-10 | 삼성전기주식회사 | Apparatus for supplying power of outer amplifier in digital broadcasting receiver |
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