JPS6438022U - - Google Patents
Info
- Publication number
- JPS6438022U JPS6438022U JP12912587U JP12912587U JPS6438022U JP S6438022 U JPS6438022 U JP S6438022U JP 12912587 U JP12912587 U JP 12912587U JP 12912587 U JP12912587 U JP 12912587U JP S6438022 U JPS6438022 U JP S6438022U
- Authority
- JP
- Japan
- Prior art keywords
- tuning
- output
- voltage
- frequency
- generating
- 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
- 230000010355 oscillation Effects 0.000 claims 2
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Description
第１図はこの考案に係る電子同調チユーナの一
実施例を示すブロツク図、第２図は従来の電子同
調チユーナの一例を示すブロツク図である。
１２……入力同調回路、１４……複同調回路、
１８……局部発振器、２０……ＰＬＬ回路、２１
……高周波側ブロツク、２２……ＩＦ周波側ブロ
ツク、２３……チユーニング電圧形成回路、２４
……映像・音声検波回路、ＶＴ……同調電圧、２
０ａ……制御電圧、ＶＡＦ……ＩＦ周波数弁別電
圧。
FIG. 1 is a block diagram showing an embodiment of an electronic tuning tuner according to this invention, and FIG. 2 is a block diagram showing an example of a conventional electronic tuning tuner. 12 ...Input tuning circuit, 14 ...Double tuning circuit,
18... Local oscillator, 20... PLL circuit, 21
... High frequency side block, 22 ... IF frequency side block, 23 ... Tuning voltage forming circuit, 24
...Video/audio detection circuit, VT...Tuning voltage, 2
0a...Control voltage, VAF...IF frequency discrimination voltage.
Claims (1)
信周波数制御電圧を発生する第１の手段と、 中間周波数のずれに対応した中間周波数弁別電
圧を発生する第２の手段と、 これら第１の手段の出力と第２の手段の出力と
を合成して高周波ブロツクに設けられる同調回路
の同調周波数を制御するための電圧を形成するチ
ユーニング電圧形成手段と、 を具備したことを特徴とする電子同調チユーナ
。[Claims for Utility Model Registration] A first means for generating a local oscillation frequency control voltage obtained by comparing the local oscillation output with a reference signal, and a second means for generating an intermediate frequency discrimination voltage corresponding to the deviation of the intermediate frequency. and tuning voltage forming means for synthesizing the output of the first means and the output of the second means to form a voltage for controlling the tuning frequency of a tuning circuit provided in the high frequency block. An electronic tuning tuner characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12912587U JPS6438022U (en) | 1987-08-27 | 1987-08-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12912587U JPS6438022U (en) | 1987-08-27 | 1987-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6438022U true JPS6438022U (en) | 1989-03-07 |
Family
ID=31383110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12912587U Pending JPS6438022U (en) | 1987-08-27 | 1987-08-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6438022U (en) |
-
1987
- 1987-08-27 JP JP12912587U patent/JPS6438022U/ja active Pending