JPH04170823A - Radio communication equipment - Google Patents

Radio communication equipment

Info

Publication number
JPH04170823A
JPH04170823A JP2299126A JP29912690A JPH04170823A JP H04170823 A JPH04170823 A JP H04170823A JP 2299126 A JP2299126 A JP 2299126A JP 29912690 A JP29912690 A JP 29912690A JP H04170823 A JPH04170823 A JP H04170823A
Authority
JP
Japan
Prior art keywords
reference oscillator
frame
wireless communication
communication device
oscillator
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
Application number
JP2299126A
Other languages
Japanese (ja)
Other versions
JP3125301B2 (en
Inventor
Hisaki Hiraiwa
平岩 久樹
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.)
Sony Corp
Original Assignee
Sony 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.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP02299126A priority Critical patent/JP3125301B2/en
Publication of JPH04170823A publication Critical patent/JPH04170823A/en
Application granted granted Critical
Publication of JP3125301B2 publication Critical patent/JP3125301B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Transceivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To attain the reduction of power consumption in an intermittent receiving state by supplying the output of a second oscillator whose frequency is lower than a reference oscillator to the counting means of low order, and simultaneously, turning the counting means of high order and the reference oscillator into a non-operating state at the time of non-communication. CONSTITUTION:The output of the reference oscillator 26 of system clock frequency fck is supplied to a high-speed counter 31, and is supplied to the clock terminal of a low-speed counter 32 through the a-side contact and the movable contact of a change-over switch 33. The output of a second reference oscillator 34 of low frequency flo is supplied to the i-side contact of the switch 33. In the idle period of an intermittent reception mode, the movable contacts of the change-over switches 33,35 are connected to the i-side contacts, and the first reference oscillator 26 and the high-speed counter 31 are turned into the non-operating state, and simultaneously, the second reference oscillator 34 of low power consumption is turned into an operating state, and information is held for a tentative period. Thus, the power consumption in the intermittent receiving state can be reduced.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、移動用、特に携帯用に好適な無線通信装置
に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wireless communication device suitable for mobile use, particularly for portable use.

[発明の概要] この発明は、デジタル情報をフレーム単位で伝送する無
線通信装置において、移動局の非通信時にベージングを
受けるフレームを限定すると共に、フレームカウンタを
低速で動作させることにより、間欠受信状態における移
動局の消費電力を一層低減するようにしたものである。
[Summary of the Invention] The present invention, in a wireless communication device that transmits digital information frame by frame, limits the frames that undergo paging when a mobile station is not communicating, and operates a frame counter at a low speed to prevent intermittent reception. The power consumption of the mobile station in the mobile station is further reduced.

[従来の技術] 従来、第2図に示すように、例えば自動車のような移動
体に搭載された多数の移動局MSと、固定の基地局BS
との間で、例えば900MHz帯の無線通信が行われて
いる。
[Prior Art] Conventionally, as shown in FIG. 2, a large number of mobile stations MS mounted on a mobile body such as a car and a fixed base station BS
For example, wireless communication in the 900 MHz band is performed between the two.

基地局BSは、例えば、半径5〜10kmの地域をカバ
ーし、200〜1000の実回線に対応することができ
る。
For example, the base station BS can cover an area with a radius of 5 to 10 km and can support 200 to 1000 actual lines.

移動局MS側では、消費電力を低減するため、通常、ベ
ージング(指定呼出)を間欠受信するようになっている
On the mobile station MS side, in order to reduce power consumption, paging (designated paging) is normally received intermittently.

この間欠受信は、各通信システムにより、種々の態様が
あり、本出願人も、特開平2−148924号(特願昭
63−301770号)において、すでに提案している
This intermittent reception has various aspects depending on each communication system, and the present applicant has already proposed it in Japanese Patent Application Laid-Open No. 2-148924 (Japanese Patent Application No. 63-301770).

まず、第3図及び第4図を参照しながら、音声信号及び
制御信号をデジタル伝送する、従来の無線通信装置の一
例について説明する。
First, an example of a conventional wireless communication device that digitally transmits audio signals and control signals will be described with reference to FIGS. 3 and 4.

第3図において、(10)は基地局用の無線通信機、(
20)は移動局用の無線通信機であって、基地局用の無
線通信機(10)は、アンテナ(1)を共用する送信機
(11)と受信機(12)を備える。この送信機(11
)と受信機(12)は、インタフェース(13)と地上
回線を介して、加入者(2)に接続される。インタフェ
ース(13)は、A−D変換器とD−A変換器を含み、
送信機(11)・受信機(12)と共に、システム制御
回路(マイクロコンピュータ) (14)に制御される
In FIG. 3, (10) is a wireless communication device for a base station, (
20) is a wireless communication device for a mobile station, and the wireless communication device (10) for a base station includes a transmitter (11) and a receiver (12) that share an antenna (1). This transmitter (11
) and the receiver (12) are connected to the subscriber (2) via an interface (13) and a land line. The interface (13) includes an A-D converter and a D-A converter,
Together with the transmitter (11) and receiver (12), it is controlled by a system control circuit (microcomputer) (14).

(15)ハフレーム(タイムベース)カウンタであって
、基準発振器(16)から、例えば16MHzのような
高速のシステムクロック周波数fckの基準クロックが
供給され、第4図に示すように、例えば、1フレーム当
り256ビントで、時間が5〜10m5のフレームを単
位として、128フレ一ム周期でデジタル伝送される音
声信号(VOrCE)とデータ及び制御信号(INFO
)を管理する。
(15) A frame (time base) counter, which is supplied with a reference clock having a high system clock frequency fck such as 16 MHz from the reference oscillator (16), and as shown in FIG. Audio signals (VOrCE) and data and control signals (INFO) are digitally transmitted at a period of 128 frames, with 256 bits per frame and frame units of 5 to 10 m5 in length.
).

同様に、移動局用の無線通信機(20)は、アンテナ(
3)を共用する送信機(21)と受信機(22)を備え
る。送信機(21)と受信機(22)は、インタフェー
ス(23)を介して、データの授受を行うと共に、送話
器(4)及び受話器(5)に接続される。インタフェー
ス(23)は、A−D、D−Aの両度換器を含み、送信
機(21)・受信機(22)と共に、システム制御回路
(マイクロコンピュータ) (24)に制御される。
Similarly, the mobile station wireless communication device (20) has an antenna (
3) is provided with a transmitter (21) and a receiver (22) that share the same. The transmitter (21) and receiver (22) exchange data via an interface (23) and are connected to a transmitter (4) and a receiver (5). The interface (23) includes an AD and DA converter, and is controlled by a system control circuit (microcomputer) (24) together with a transmitter (21) and a receiver (22).

フレームカウンタ(25)は、フレーム単位でデジタル
伝送される音声信号(VOICE) とデータ及び制御
信号(INFO)を管理し、基準発振器(26)からシ
ステムクロック周波数fckの基準クロックが供給され
ると共に、受信機(22)から、基地局とのフレームの
ずれを調整する信号が供給される。
The frame counter (25) manages voice signals (VOICE) and data and control signals (INFO) that are digitally transmitted in units of frames, and is supplied with a reference clock having a system clock frequency fck from a reference oscillator (26). A signal is supplied from the receiver (22) to adjust the frame shift with respect to the base station.

例えば、2次電池を用いる電源(27)がシステム制御
回路(24)、 フレームカウンタ(25)及び基準発
振器(26)に共通に接続される。受信機(22)とイ
ンタフェース(23)には、システム制御回路(24)
に制御されるスイッチ(28)を介して、電源(27)
が接続されると共に、送信99(21)には、スイッチ
(29)を介して、電源(27)が接続される。
For example, a power source (27) using a secondary battery is commonly connected to the system control circuit (24), frame counter (25) and reference oscillator (26). The receiver (22) and the interface (23) include a system control circuit (24).
Power supply (27) via a switch (28) controlled by
is connected to the transmitter 99 (21), and a power source (27) is also connected to the transmitter 99 (21) via a switch (29).

第3図の無線通信装置においては、基地局用の無線通信
機(10)と、移動局用の無線通信機(20)とで、前
述のようなフレーム番号及びフレーム内ビット番号に基
いて、カウンタ(15) 、 (25)により、それぞ
れ1ビツト以下の精度でフレームの管理を行い、第4図
A、Bに示すように、双方のデジタル伝送信号(VOr
CE、 INFO)のフレームを同期させて、デジタル
通信を行っている。
In the wireless communication device shown in FIG. 3, the base station wireless communication device (10) and the mobile station wireless communication device (20) perform Counters (15) and (25) manage frames with an accuracy of 1 bit or less, respectively, and as shown in Fig. 4A and B, both digital transmission signals (VOr
CE, INFO) frames are synchronized to perform digital communication.

また、移動局側では、ベージングを受信するフレームを
個々に特定して、所定のフレームのタイミングに合わせ
てスイッチ(28)を閉じて、間欠受信することにより
、受信機(20)の消費電力を低減している。
In addition, on the mobile station side, the power consumption of the receiver (20) is reduced by individually identifying the frame to receive paging, closing the switch (28) in accordance with the timing of the predetermined frame, and performing intermittent reception. It is decreasing.

[発明が解決しようとする課題1 ところが、前述のように、フレーム単位で情報を伝達す
る無線通信装置では、間欠受信モードではあっても、移
動局側の受信機(20)に搭載される、システム制御回
路(24)、フレームカウンタ(25) 及び基準発振
器(26)が電源(27)に常時接続されて、ベージン
グ用の1フレームの間欠受信以外の、多フレームにわた
る非受信(アイドル)期間でも、電力を消費している。
[Problem to be Solved by the Invention 1] However, as described above, in a wireless communication device that transmits information on a frame-by-frame basis, even if it is in an intermittent reception mode, The system control circuit (24), frame counter (25), and reference oscillator (26) are always connected to the power supply (27), even during non-receiving (idle) periods over many frames, except for intermittent reception of one frame for paging. , consumes electricity.

前述のように、フレームカウンタ(25)には、例えば
16MHzのような高速のクロックが用いられ、例えば
、2 ppmの高精度の基準発振器(2G)と図示を省
略した温度補償装置と共に、間欠受信モードのアイドル
期間においても、例えば5VX10mAのように、比較
的小容量の電源に対しては、比較的大きい電力を消費す
るという問題があった。
As mentioned above, a high-speed clock such as 16 MHz is used for the frame counter (25), and together with a high-precision reference oscillator (2G) of, for example, 2 ppm and a temperature compensation device (not shown), intermittent reception is performed. Even during the idle period of the mode, there is a problem in that a relatively large amount of power is consumed for a relatively small capacity power supply, such as 5V x 10mA, for example.

かかる点に鑑み、この発明の口約は、間欠受信状態にお
ける消費電力を一層低減することができる無線通信装置
を提供するところにある。
In view of this, an object of the present invention is to provide a wireless communication device that can further reduce power consumption in an intermittent reception state.

[課題を解決するための手段1 この発明は、システムクロック周波数fckの基準発振
器と、この基準発振器(26)の出力が供給されるフレ
ーム計数手段とを備え、デジタル情報をフレーム単位で
伝送する無線通信装置において、フレーム計数手段を上
位及び下位の複数の計数手段(31) 、 (32)か
ら構成すると共に、基準発振器より低い周波数floの
第2の発振器(34)を設け、非通信時に、この第2の
発振器の出力を下位の計数手段に供給すると共に、上位
の係数手段及び基準発振器を非動作状態とするようにし
た無線通信装置である。
[Means for Solving the Problems 1] The present invention provides a wireless communication system that transmits digital information frame by frame, and includes a reference oscillator with a system clock frequency fck and frame counting means to which the output of the reference oscillator (26) is supplied. In the communication device, the frame counting means is composed of a plurality of upper and lower counting means (31) and (32), and a second oscillator (34) with a frequency flo lower than that of the reference oscillator is provided, and this In this wireless communication device, the output of the second oscillator is supplied to the lower-order counting means, and the upper-order coefficient means and the reference oscillator are rendered inactive.

[作用] かかる構成によれば、間欠受信状態における消費電力が
一層低減される。
[Operation] According to this configuration, power consumption in the intermittent reception state is further reduced.

[実施例] 以下、第1図を参照しながら、この発明による無線通信
装置の一実施例について説明する。
[Embodiment] Hereinafter, an embodiment of a wireless communication device according to the present invention will be described with reference to FIG.

この発明の一実施例の構成を第1図に示す。この第1図
において、前出第3図に対応する部分には同一の符号を
付して重複説明を省略する。
FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, parts corresponding to those in FIG. 3 are given the same reference numerals and redundant explanation will be omitted.

第1図において、(20S)は移動局用の無線通信機で
あって、高速及び低速の2個のカウンタ(31)及び(
32)を備える。システムクロック周波数fckの基準
発振器(26)の出力が高速カウンタ(31)に供給さ
れ、このカウンタ(31)のLSBが、必要ならば極性
を反転され、切換スイッチ(33)のa側接点及び可動
接点を介して、低速カウンタ(32)のクロック端子に
供給されて、両カウンタ(31) 、 (32)は、全
体として、前出第3図のフレームカウンタ(25)に対
応する。スイッチ(33)のi側接点には、例えば31
.25kHz (= f ck1512)  のような
低い周波数floの第2の基準発振器(34)の出力が
供給される。
In FIG. 1, (20S) is a wireless communication device for a mobile station, which has two high-speed and low-speed counters (31) and (20S).
32). The output of the reference oscillator (26) at the system clock frequency fck is fed to a high speed counter (31), the LSB of which is reversed in polarity if necessary, and the a-side contact of the changeover switch (33) and the movable Via contacts, the clock terminals of the slow counter (32) are fed, and both counters (31), (32) correspond as a whole to the frame counter (25) of FIG. 3 above. The i-side contact of the switch (33) has, for example, 31
.. The output of the second reference oscillator (34) at a lower frequency flo, such as 25 kHz (=f ck1512), is provided.

高速カウンタ(31)の下位ビット出力と低速カウンタ
(32)の上位ビット出力とがmビットのフレーム内ビ
ット番号に対応すると共に、低速カウンタ(32)の下
位ビット出力がnビットのフレーム番号に対応し、それ
ぞれ受信@ (22)に供給される。また、受信機(2
2)からは低速カウンタ(32)の計数値を増減させて
、基地局とのフレームのずれを調整するための調整信号
が供給される。
The low-order bit output of the high-speed counter (31) and the high-order bit output of the low-speed counter (32) correspond to the m-bit in-frame bit number, and the low-order bit output of the low-speed counter (32) corresponds to the n-bit frame number. and are respectively supplied to the receiver @ (22). In addition, the receiver (2
2) supplies an adjustment signal for increasing or decreasing the count value of the low-speed counter (32) to adjust the frame shift with respect to the base station.

第1の基準発振器(26)と高速カウンタ(31)とが
、切換スイッチ(35)のa側接点及び可動接点を介し
て、電源(27)に接続され、スイッチ(35)のi側
接点には、第2の基準発振器(34)が接続される。ま
た、低速カウンタ(32)は直接に電源(27)に接続
される。両スイッチ(33) 、 (35) は、シス
テム制御回路(24)に制御されて、連動して切り換え
られる。
A first reference oscillator (26) and a high-speed counter (31) are connected to a power source (27) via the a-side contact and the movable contact of the changeover switch (35), and are connected to the i-side contact of the switch (35). is connected to a second reference oscillator (34). Also, the low speed counter (32) is directly connected to the power source (27). Both switches (33) and (35) are controlled by the system control circuit (24) and are switched in conjunction.

その余の構成は前出第3図と同様である。The rest of the configuration is the same as that shown in FIG. 3 above.

次に、この発明の一実施例の動作について説明する。Next, the operation of one embodiment of the present invention will be explained.

通常の送受信モード及び間欠受信時には、切換スイッチ
(33) 、 (35)の可動接点がa側接点に接続さ
れて、第1の基準発振器(26)と高速カウンタ(3L
)とが動作状態になると共に、第2の基準発振器(34
)が非動作状態になって、従来と同様に、1ビツト以下
の精度でフレームが管理されて、通常の送受信及び間欠
受信が行われる。
During normal transmission/reception mode and intermittent reception, the movable contacts of the changeover switches (33) and (35) are connected to the a-side contacts, and the first reference oscillator (26) and high-speed counter (3L
) becomes operational, and the second reference oscillator (34
) becomes inactive, frames are managed with an accuracy of 1 bit or less, and normal transmission/reception and intermittent reception are performed as in the conventional case.

間欠受信モードのアイドル期間においては、上述とは逆
に、切換スイッチ(33) 、 (35)の可動接点が
i側接点に接続されて、第1の基準発振器(26)と高
速カウンタ(31)とが非動作状態になると共に、例え
ば5VX10μAのような低消費電力の、第2の基準発
振器(34)が動作状態になって、一応の時間情報が保
持され、上述のような1ビツト以下の精度には及ばない
ものの、数ピントの精度でフレームを管理することがで
きる。
In the idle period of the intermittent reception mode, contrary to the above, the movable contacts of the changeover switches (33) and (35) are connected to the i-side contacts, and the first reference oscillator (26) and high-speed counter (31) At the same time, the second reference oscillator (34), which has a low power consumption such as 5V x 10μA, becomes active, and a certain amount of time information is retained, and the Although not as accurate as this, it is possible to manage frames with an accuracy of several points.

これにより、アイドル期間から間欠受信期間に移行した
場合にも、格別の支障が生じることはなく、第1の基準
発振器(26)及び高速カウンタ(31)の電力消費が
節約される。
As a result, no particular trouble occurs even when transitioning from the idle period to the intermittent reception period, and the power consumption of the first reference oscillator (26) and the high-speed counter (31) is saved.

なお、第1図に破線で示すように、周波数カウンタ(3
6)を設け、このカウンタ(36)に両基準発振器(2
6) 、 (34)の出力を供給して、例えば1時間に
1回の頻度で、第2の基準発振器(34)の周波数を較
正し、カウンタ(36)の出力をシステム制御回路(2
4)に供給するようにしてもよい。この場合、第2の基
準発振器(34)には、精度の低いものを用いることか
できる。
In addition, as shown by the broken line in Fig. 1, the frequency counter (3
6), and this counter (36) is connected to both reference oscillators (2
6) and (34) to calibrate the frequency of the second reference oscillator (34), for example once every hour, and the output of the counter (36) to the system control circuit (2).
4). In this case, a less accurate second reference oscillator (34) may be used.

[発明の効果] 以上詳述のように、この発明によれば、デジタル情報を
フレーム単位で伝送する無線通信装置において、移動局
の非通信時にページングを受けるフレームを限定すると
共に、フレームカウンタを低速で動作させるようにした
ので、間欠受信状態における移動局の消費電力を一層低
減することができる無線通信装置が得られる。
[Effects of the Invention] As described in detail above, according to the present invention, in a wireless communication device that transmits digital information frame by frame, frames that are subjected to paging when a mobile station is not communicating are limited, and the frame counter is set to a low speed. Since the wireless communication device is operated in the above manner, it is possible to obtain a wireless communication device that can further reduce the power consumption of the mobile station in the intermittent reception state.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明による無線通信装置の一実施例の構成
を示すブロック図、第2図はこの発明を説明するための
概念図、第3図は従来の無線通信装置の構成例を示すブ
ロック図、第4図は従来例の動作を説明するためのタイ
ムチャートである。 (20S)は無線通信機、(21)は送信機、(22)
は受信機、(24)はシステム制御回路(マイクロコン
ピュータ) 、(26)、 (34)は基準発振器、(
27)は電源、(31) 、 (32)  はカウンタ
、(35)はスイッチである。
FIG. 1 is a block diagram showing the configuration of an embodiment of a wireless communication device according to the present invention, FIG. 2 is a conceptual diagram for explaining the present invention, and FIG. 3 is a block diagram showing an example of the configuration of a conventional wireless communication device. 4 are time charts for explaining the operation of the conventional example. (20S) is a wireless communication device, (21) is a transmitter, (22)
is the receiver, (24) is the system control circuit (microcomputer), (26), (34) are the reference oscillator, (
27) is a power supply, (31) and (32) are counters, and (35) is a switch.

Claims (1)

【特許請求の範囲】 システムクロック周波数の基準発振器と、この基準発振
器の出力が供給されるフレーム計数手段とを備え、デジ
タル情報をフレーム単位で伝送する無線通信装置におい
て、 上記フレーム計数手段を上位及び下位の複数の計数手段
から構成すると共に、 上記基準発振器より低い周波数の第2の発振器を設け、 非通信時に、この第2の発振器の出力を上記下位の計数
手段に供給すると共に、 上記上位の計数手段及び上記基準発振器を非動作状態と
するようにしたことを特徴とする無線通信装置。
[Scope of Claims] A wireless communication device that transmits digital information frame by frame, comprising a reference oscillator with a system clock frequency and a frame counting means to which the output of the reference oscillator is supplied, It is composed of a plurality of lower-order counting means, and is provided with a second oscillator having a lower frequency than the reference oscillator, and when not communicating, supplies the output of this second oscillator to the lower-order counting means, and A wireless communication device, characterized in that the counting means and the reference oscillator are rendered inactive.
JP02299126A 1990-11-05 1990-11-05 Wireless communication device Expired - Fee Related JP3125301B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP02299126A JP3125301B2 (en) 1990-11-05 1990-11-05 Wireless communication device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02299126A JP3125301B2 (en) 1990-11-05 1990-11-05 Wireless communication device

Publications (2)

Publication Number Publication Date
JPH04170823A true JPH04170823A (en) 1992-06-18
JP3125301B2 JP3125301B2 (en) 2001-01-15

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Country Status (1)

Country Link
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JP2008289145A (en) * 1996-09-06 2008-11-27 Telefon Ab L M Ericsson Method and apparatus for generating timing signal in radio communication unit
JP4643682B2 (en) * 1996-09-06 2011-03-02 テレフオンアクチーボラゲット エル エム エリクソン(パブル) Method and apparatus for generating timing signals in a wireless communication unit
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US6885254B2 (en) 2000-06-15 2005-04-26 Infineon Technologies Ag Calibration device and method for generating a clock in an integrated circuit
JP2007060579A (en) * 2005-08-26 2007-03-08 Kyocera Corp Operating frequency control method of radio communication apparatus, and electric power converter
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US7957488B2 (en) 2005-08-26 2011-06-07 Kyocera Corporation Wireless communication apparatus and operating frequency control method of power conversion apparatus
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JP2018152801A (en) * 2017-03-14 2018-09-27 株式会社テスコム Intermittent processing type, intermittent signal generating device allowing precise frequency synchronization

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