JPS60114431U - AFT circuit adjustment device - Google Patents
AFT circuit adjustment deviceInfo
- Publication number
- JPS60114431U JPS60114431U JP102484U JP102484U JPS60114431U JP S60114431 U JPS60114431 U JP S60114431U JP 102484 U JP102484 U JP 102484U JP 102484 U JP102484 U JP 102484U JP S60114431 U JPS60114431 U JP S60114431U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- aft
- adjustment device
- variable
- composite
- 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
Landscapes
- Television Receiver Circuits (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はＡＦＴ機能を具備したテレビジョン受像機の概
略を示すブロック図、第２図はＡＦＴ動 ４作を説明す
るためのＡＦＴ特性を示す特性図、第３図は従来のＡＦ
Ｔ回路の調整装置を示す回路図、第４図は本考案のＡＦ
Ｔ調整装置を示す回路図、第５図は本考案の動作を説明
するための説明″′″’：：−ｊ’ｒ−，：Ｌ−）−１
、ｌ ｆＪ、−ｑ−ｉ９ｘえ２−７．１９・・・電圧検
出手段、２０・・・選局回路、２１・・・ディジタルア
ナログ変換□器、２２・・・重畳手段（Ｒ１，Ｒ２・・
・抵抗）、２４・・・制御手段、−２５・・・不揮発性
メモリ。 ′Fig. 1 is a block diagram showing the outline of a television receiver equipped with an AFT function, Fig. 2 is a characteristic diagram showing AFT characteristics to explain the AFT operation, and Fig. 3 is a conventional AF
A circuit diagram showing the adjustment device of the T circuit, Fig. 4 is the AF of the present invention.
A circuit diagram showing the T adjustment device, FIG. 5 is an explanation for explaining the operation of the present invention::-j'r-,:L-)-1
, l fJ, -q-i9xE2-7.19... Voltage detection means, 20... Tuning circuit, 21... Digital-to-analog converter, 22... Superimposing means (R1, R2,・
・Resistance), 24...Control means, -25...Nonvolatile memory. ′
Claims (1)
設定するＡＦＴ回路の自動調整装置であって、チューナ
の出力周波数と規定周波数との差に応じたＡＦＴ電圧を
検出する電圧検出手段と、この電圧検出手段の出力に可
変電圧を重畳してＡＦＴ合成電圧を形成する電圧重畳手
段と、前記可変電圧を発生しかつ制御する手段であって
、この手段は前記ＡＦＴ合成電圧を入力し、かつ前記基
準電圧に略等しい判定電圧が予め設定されこの判定電圧
に前記ＡＦＴ合成電圧が一致した時点で前記可変電圧を
固定する制御手段と、前記固定さ・ −れた電圧を
記憶するメモリ手段とを具備したことを特徴とする届Ｔ
回路の調整装置。An automatic adjustment device for an AFT circuit that automatically sets a reference voltage as a center voltage for an AFT pull-in operation, comprising a voltage detection means for detecting an AFT voltage according to a difference between an output frequency of a tuner and a specified frequency; voltage superimposition means for superimposing a variable voltage on the output of the voltage detection means to form an AFT composite voltage; and means for generating and controlling the variable voltage, the means inputting the AFT composite voltage; A determination voltage substantially equal to a reference voltage is set in advance, and the variable voltage is fixed at the time when the AFT composite voltage matches the determination voltage, and a memory means is provided for storing the fixed voltage. Notification T characterized by the fact that
Circuit regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP102484U JPS60114431U (en) | 1984-01-10 | 1984-01-10 | AFT circuit adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP102484U JPS60114431U (en) | 1984-01-10 | 1984-01-10 | AFT circuit adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60114431U true JPS60114431U (en) | 1985-08-02 |
Family
ID=30473394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP102484U Pending JPS60114431U (en) | 1984-01-10 | 1984-01-10 | AFT circuit adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60114431U (en) |
-
1984
- 1984-01-10 JP JP102484U patent/JPS60114431U/en active Pending
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