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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