JPS63184464U - - Google Patents
Info
- Publication number
- JPS63184464U JPS63184464U JP7506487U JP7506487U JPS63184464U JP S63184464 U JPS63184464 U JP S63184464U JP 7506487 U JP7506487 U JP 7506487U JP 7506487 U JP7506487 U JP 7506487U JP S63184464 U JPS63184464 U JP S63184464U
- Authority
- JP
- Japan
- Prior art keywords
- digital audio
- digital
- reference signal
- sampling frequency
- memory
- 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
- 238000005070 sampling Methods 0.000 claims 3
- 230000006870 function Effects 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
第１図は光学式デジタルオーデイオデイスク再
生装置に適用した本考案の基準信号発生装置を示
す系統図、第２図は本考案の他の実施例を示す基
準信号発生装置の要部系統図である。
符号の説明、３……カウンタ、４……ＲＯＭ、
５……Ｄ／Ａコンバータ、ＭＳＷ……モード切換
スイツチ、ＳＷ１、ＳＷ２……切換スイツチ、Ｃ
Ｐ……コントローラ。
FIG. 1 is a system diagram showing a reference signal generating device of the present invention applied to an optical digital audio disc playback device, and FIG. 2 is a system diagram of main parts of a reference signal generating device showing another embodiment of the present invention. . Explanation of symbols, 3... Counter, 4... ROM,
5...D/A converter, MSW...mode changeover switch, SW1, SW2...changeover switch, C
P... Controller.
Claims (1)
タルオーデイオテープレコーダ等少なくともデジ
タルオーデイオ信号再生機能を有するデジタルオ
ーデイオ機器であつて、所定の信号レベルを有す
るオーデイオ周波数帯域内の正弦波基準信号をデ
ジタルオーデイオ機器に用いられているサンプリ
ング周波数と等しいサンプリング周波数でデジタ
ル化したデジタル基準信号を記憶したメモリーと
、該メモリーを前記デジタルオーデイオ機器のマ
スタークロツクより供給されるサンプリング周波
数で呼び出し動作させるためのカウンタと、機器
内において記録媒体より情報読取手段を介して再
生されるデジタル情報または前記メモリーより呼
び出されるデジタル基準信号のいずれかを選択的
に機器内に設けられているＤ／Ａコンバータに供
給するための選択手段とを具備したことを特徴と
する基準信号発生装置。 Digital audio devices, such as digital audio disc playback devices and digital audio tape recorders, that have at least a digital audio signal playback function, in which a sine wave reference signal within an audio frequency band having a predetermined signal level is used in the digital audio device. a memory storing a digital reference signal digitized at a sampling frequency equal to the sampling frequency; a counter for calling and operating the memory at a sampling frequency supplied from a master clock of the digital audio device; and a recording medium in the device. and a selection means for selectively supplying either the digital information reproduced through the information reading means or the digital reference signal read from the memory to a D/A converter provided in the device. A reference signal generating device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7506487U JPS63184464U (en) | 1987-05-19 | 1987-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7506487U JPS63184464U (en) | 1987-05-19 | 1987-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63184464U true JPS63184464U (en) | 1988-11-28 |
Family
ID=30920863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7506487U Pending JPS63184464U (en) | 1987-05-19 | 1987-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63184464U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58161116A (en) * | 1982-03-19 | 1983-09-24 | Matsushita Electric Ind Co Ltd | Disk reproducing device |
| JPS5928816B2 (en) * | 1979-06-26 | 1984-07-16 | 三菱電機株式会社 | floor heating panel |
-
1987
- 1987-05-19 JP JP7506487U patent/JPS63184464U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5928816B2 (en) * | 1979-06-26 | 1984-07-16 | 三菱電機株式会社 | floor heating panel |
| JPS58161116A (en) * | 1982-03-19 | 1983-09-24 | Matsushita Electric Ind Co Ltd | Disk reproducing device |
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