JP4250715B2 - トリガdds信号発生装置 - Google Patents
トリガdds信号発生装置 Download PDFInfo
- Publication number
- JP4250715B2 JP4250715B2 JP2004366071A JP2004366071A JP4250715B2 JP 4250715 B2 JP4250715 B2 JP 4250715B2 JP 2004366071 A JP2004366071 A JP 2004366071A JP 2004366071 A JP2004366071 A JP 2004366071A JP 4250715 B2 JP4250715 B2 JP 4250715B2
- Authority
- JP
- Japan
- Prior art keywords
- trigger
- dds
- signal
- time
- phase
- 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.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/02—Digital function generators
- G06F1/03—Digital function generators working, at least partly, by table look-up
- G06F1/0321—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
- G06F1/0328—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers in which the phase increment is adjustable, e.g. by using an adder-accumulator
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Manipulation Of Pulses (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Description
14 時間測定回路
16 第1同期フリップフロップ
18 第2同期フリップフロップ
20 遅延回路
22 時間変換ルックアップ・テーブル
24 位相マルチプレクサ
26 アキュムレータ
28 初期値マルチプレクサ
30 位相アキュムレータ・レジスタ
Claims (1)
- DDSクロックに応じて位相増加量を累積して、波形ルックアップ・テーブルをアドレスするための位相アキュムレータ値を生成し、所望の出力信号を供給するトリガDDS信号発生装置であって、
トリガ信号の到着とDDSクロックのその次のサイクルの間の時間間隔を測定する時間測定手段と、
上記時間間隔を初期位相アキュムレータ値に変換する変換手段と、
上記トリガ信号に応じて、上記位相アキュムレータ値として上記初期位相アキュムレータ値を選択する選択手段と
を具えるトリガDDS信号発生装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/739,761 US7281025B2 (en) | 2003-12-18 | 2003-12-18 | Triggered DDS pulse generator architecture |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005184833A JP2005184833A (ja) | 2005-07-07 |
JP4250715B2 true JP4250715B2 (ja) | 2009-04-08 |
Family
ID=34677705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004366071A Expired - Fee Related JP4250715B2 (ja) | 2003-12-18 | 2004-12-17 | トリガdds信号発生装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7281025B2 (ja) |
JP (1) | JP4250715B2 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4339215B2 (ja) * | 2004-09-16 | 2009-10-07 | 古野電気株式会社 | コードncoおよびgps受信機 |
DE102006031351A1 (de) * | 2006-07-06 | 2008-01-17 | Infineon Technologies Ag | Vorrichtung und Verfahren zum Messen einer Phasenabweichung |
US7952516B2 (en) * | 2006-09-26 | 2011-05-31 | Lockheed Martin Corporation | System and method for coherent frequency switching in DDS architectures |
US9075144B1 (en) | 2012-10-25 | 2015-07-07 | Garmin International, Inc. | Digital radar altimeter |
JP6672345B2 (ja) * | 2018-01-24 | 2020-03-25 | アンリツ株式会社 | トリガ生成回路及びトリガ生成方法とサンプリングオシロスコープ及びサンプリング方法 |
CN114122894A (zh) * | 2021-11-02 | 2022-03-01 | 北京卓镭激光技术有限公司 | 一种脉冲激光任意触发动态增益控制器及控制方法 |
CN114384288B (zh) * | 2022-03-22 | 2022-07-01 | 中星联华科技(北京)有限公司 | 信号发生装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5598440A (en) * | 1994-11-08 | 1997-01-28 | Mpb Technologies Inc. | DDS driven DDS synthesizer for generating sinewave waveforms with reduced spurious signal levels |
US7124153B2 (en) * | 2002-03-18 | 2006-10-17 | Genesis Microchip Inc. | Frequency converter and methods of use thereof |
CA2460285C (en) * | 2003-10-17 | 2008-12-16 | Vcom Inc. | Method and apparatus for fractional rf signal synthesis |
-
2003
- 2003-12-18 US US10/739,761 patent/US7281025B2/en active Active
-
2004
- 2004-12-17 JP JP2004366071A patent/JP4250715B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20050138094A1 (en) | 2005-06-23 |
US7281025B2 (en) | 2007-10-09 |
JP2005184833A (ja) | 2005-07-07 |
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