JP2001503940A - 通信機器の待機電流を削減する方法と装置 - Google Patents
通信機器の待機電流を削減する方法と装置Info
- Publication number
- JP2001503940A JP2001503940A JP52127998A JP52127998A JP2001503940A JP 2001503940 A JP2001503940 A JP 2001503940A JP 52127998 A JP52127998 A JP 52127998A JP 52127998 A JP52127998 A JP 52127998A JP 2001503940 A JP2001503940 A JP 2001503940A
- Authority
- JP
- Japan
- Prior art keywords
- system clock
- circuit
- clock
- counter
- modulator
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0287—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment
- H04W52/029—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment reducing the clock frequency of the controller
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/0802—Details of the phase-locked loop the loop being adapted for reducing power consumption
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/14—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail or are interrupted
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
- H03L7/1974—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
- H03L7/1974—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division
- H03L7/1976—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division using a phase accumulator for controlling the counter or frequency divider
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
- H03L2207/08—Modifications of the phase-locked loop for ensuring constant frequency when the power supply fails or is interrupted, e.g. for saving power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0287—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment
- H04W52/0293—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment having a sub-controller with a low clock frequency switching on and off a main controller with a high clock frequency
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. 電気通信機器で電力消費を削減する方法において、 所定期間の間電気通信装置に含まれる第1システムクロックをパワーダウンす る段階と、 所定期間の間電気通信装置に含まれる第2システムクロックをパワーアップす る段階であって、第2システムクロックは第1システムクロックより少ない電流 を消費し、第2システムクロックは所定期間の間第2システムクロックを第1シ ステムクロックに実質的に同期させる同期手段を含む、前記パワーアップする段 階と、 を含む電気通信機器で電力消費を削減する方法。 2. 請求の範囲第1項記載の方法において、同期手段は、各々第1及び第2シ ステムクロックをカウントする第1及び第2カウンタと、第2システムクロック を第1システムクロックに実質的に同期する論理回路とを含む方法。 3. 請求の範囲第2項記載の方法において、同期手段は、論理回路の出力と第 2システムクロックの入力との間に接続された帰還ループをさらに含む方法。 4. 請求の範囲第3項記載の方法において、帰還ループはディジタル・アナロ グ変換器を含む方法。 5. 請求の範囲第1項記載の方法において、同期手段は、各々第1及び第2シ ステムクロックをカウントする第1及び第2カウンタと、第1及び第2カウンタ の出力の間の位相差を検出する位相検出器と、位相差をチャージ・パルスに変換 しチャージ・パルスを第2システムクロックに供給するチャージポンプと、を含 む、方法。 6. 請求の範囲第5項記載の方法において、同期手段は、第2システムクロッ クへ供給される前にチャージ・パルスをフィルタする低域フィルタをさらに含む 方法。 7. 請求の範囲第5項記載の方法において、同期手段は、第1カウンタの出力 と第1カウンタの入力との間に接続され、第1カウンタの分割比をディジタル的 に制御する変調器をさらに含む方法。 8. 請求の範囲第7項記載の方法において、変調器は、外部源から制御情報を 受取るシグマ・デルタ変調器である方法。 9. 請求の範囲第7項記載の方法において、変調器は外部制御情報を受取らな い方法。 10.電気通信装置の同期回路において、 第1電力レベルで動作する第1システムクロックと、 第1電力レベルより低い第2電力レベルで動作する第2システムクロックであ って、第1システムクロックがパワーダウンしている所定期間の間第2システム クロックを第1システムクロックに実質的に同期する同期手段を含む前記第2シ ステムクロックと、 を含む電気通信装置の同期回路。 11.請求項第10項記載の回路において、同期手段は、各々第1及び第2シス テムクロックをカウントする第1及び第2カウンタと、第2システムクロックを 第1システムクロックに実質的に同期する論理回路とを含む回路。 12.請求項第11項記載の回路において、同期手段は、論理回路の出力と第2 システムクロックの入力との間に接続された帰還ループをさらに含む回路。 13.請求項第12項記載の回路において、帰還ループはディジタル・アナログ 変換器を含む回路。 14.請求項第10項記載の回路において、同期手段は、各々第1及び第2シス テムクロックをカウントする第1及び第2カウンタと、第1及び第2カウンタの 出力の間の位相差を検出する位相検出器と、位相差をチャージ・パルスに変換し チャージ・パルスを第2システムクロックに供給するチャージポンプと、を含む 、回路。 15.請求項第14項記載の回路において、同期手段は、第2システムクロック へ供給される前にチャージ・パルスをフィルタする低域フィルタをさらに含む回 路。 16.請求項第14項記載の回路において、同期手段は、第1カウンタの出力と 第1カウンタの入力との間に接続され、第1カウンタの分割比をディジタル的に 制御する変調器をさらに含む回路。 17.請求項第16項記載の回路において、変調器は、外部源から制御情報を受 取るシグマ・デルタ変調器である回路。 18.請求項第16項記載の回路において、変調器は外部制御情報を受取らない 回路。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/747,010 US5943613A (en) | 1996-11-07 | 1996-11-07 | Method and apparatus for reducing standby current in communications equipment |
US08/747,010 | 1996-11-07 | ||
PCT/SE1997/001773 WO1998020620A1 (en) | 1996-11-07 | 1997-10-23 | Method and apparatus for reducing standby current in communications equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001503940A true JP2001503940A (ja) | 2001-03-21 |
JP3958371B2 JP3958371B2 (ja) | 2007-08-15 |
Family
ID=25003302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52127998A Expired - Lifetime JP3958371B2 (ja) | 1996-11-07 | 1997-10-23 | 通信機器の待機電流を削減する方法と装置 |
Country Status (12)
Country | Link |
---|---|
US (1) | US5943613A (ja) |
EP (1) | EP0937338B1 (ja) |
JP (1) | JP3958371B2 (ja) |
KR (1) | KR100465956B1 (ja) |
CN (1) | CN1104098C (ja) |
AU (1) | AU729665B2 (ja) |
BR (1) | BR9712756A (ja) |
DE (1) | DE69737454T2 (ja) |
EE (1) | EE9900183A (ja) |
ES (1) | ES2281096T3 (ja) |
MY (1) | MY122368A (ja) |
WO (1) | WO1998020620A1 (ja) |
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1996
- 1996-11-07 US US08/747,010 patent/US5943613A/en not_active Expired - Lifetime
-
1997
- 1997-10-23 ES ES97912594T patent/ES2281096T3/es not_active Expired - Lifetime
- 1997-10-23 KR KR10-1999-7004052A patent/KR100465956B1/ko not_active IP Right Cessation
- 1997-10-23 WO PCT/SE1997/001773 patent/WO1998020620A1/en active IP Right Grant
- 1997-10-23 DE DE69737454T patent/DE69737454T2/de not_active Expired - Lifetime
- 1997-10-23 EE EEP199900183A patent/EE9900183A/xx unknown
- 1997-10-23 EP EP97912594A patent/EP0937338B1/en not_active Expired - Lifetime
- 1997-10-23 BR BR9712756-6A patent/BR9712756A/pt not_active Application Discontinuation
- 1997-10-23 AU AU49721/97A patent/AU729665B2/en not_active Ceased
- 1997-10-23 JP JP52127998A patent/JP3958371B2/ja not_active Expired - Lifetime
- 1997-10-23 CN CN97181226A patent/CN1104098C/zh not_active Expired - Fee Related
- 1997-10-27 MY MYPI97005073A patent/MY122368A/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0937338A1 (en) | 1999-08-25 |
EP0937338B1 (en) | 2007-03-07 |
AU4972197A (en) | 1998-05-29 |
CN1242888A (zh) | 2000-01-26 |
CN1104098C (zh) | 2003-03-26 |
WO1998020620A1 (en) | 1998-05-14 |
DE69737454D1 (de) | 2007-04-19 |
DE69737454T2 (de) | 2007-07-05 |
KR100465956B1 (ko) | 2005-01-13 |
MY122368A (en) | 2006-04-29 |
US5943613A (en) | 1999-08-24 |
BR9712756A (pt) | 1999-10-19 |
EE9900183A (et) | 1999-12-15 |
KR20000053126A (ko) | 2000-08-25 |
AU729665B2 (en) | 2001-02-08 |
JP3958371B2 (ja) | 2007-08-15 |
ES2281096T3 (es) | 2007-09-16 |
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