JPH0266089U - - Google Patents
Info
- Publication number
- JPH0266089U JPH0266089U JP1988145570U JP14557088U JPH0266089U JP H0266089 U JPH0266089 U JP H0266089U JP 1988145570 U JP1988145570 U JP 1988145570U JP 14557088 U JP14557088 U JP 14557088U JP H0266089 U JPH0266089 U JP H0266089U
- Authority
- JP
- Japan
- Prior art keywords
- character
- image quality
- signal
- character image
- channel selection
- 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
- 238000003908 quality control method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000000819 phase cycle Methods 0.000 description 1
Landscapes
- Television Systems (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
その文字画質コントロール回路の詳細図、第３図
はその動作系統ブロツク線図、第４図は第２図の
回路の各点での信号、波形を示す波形図、第５図
及び第６図はその作用例を示す周波数特性図及び
振幅低下説明図、第７図はその位相周期の一定性
を示す線図、第８図は本考案の効果を従来例との
関係で示す波形図、第９図は従来の文字放送受信
機内蔵形ＴＶ受信機の回路図である。
４……選局・復調回路、５……文字画質コント
ロール回路、６……文字信号デコーダ。
Figure 1 is a circuit diagram of an embodiment of the present invention, Figure 2 is a detailed diagram of its character image quality control circuit, Figure 3 is a block diagram of its operation system, and Figure 4 shows each point of the circuit in Figure 2. Figures 5 and 6 are frequency characteristic diagrams and amplitude reduction explanatory diagrams showing examples of their effects, Figure 7 is a diagram showing the constancy of the phase cycle, and Figure 8 is a waveform diagram showing the signal and waveform at . 9 is a waveform diagram showing the effects of the present invention in relation to a conventional example, and FIG. 9 is a circuit diagram of a conventional TV receiver with a built-in teletext receiver. 4...Tuition selection/demodulation circuit, 5...Character image quality control circuit, 6...Character signal decoder.
Claims (1)
ーダによつてデコードするようにした文字放送受
信機において、 前記選局・復調回路と前記文字信号デコーダと
の間に、通過する信号の周波数振幅特性を調整可
能な文字画質コントロール回路を挿入接続したこ
とを特徴とする文字画質調整機能付文字放送受信
機。[Claims for Utility Model Registration] In a teletext receiver in which a video signal from a channel selection/demodulation circuit is decoded by a character signal decoder, between the channel selection/demodulation circuit and the character signal decoder: A teletext receiver with a character image quality adjustment function, characterized in that a character image quality control circuit that can adjust the frequency amplitude characteristics of a passing signal is inserted and connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988145570U JPH0266089U (en) | 1988-11-08 | 1988-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988145570U JPH0266089U (en) | 1988-11-08 | 1988-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0266089U true JPH0266089U (en) | 1990-05-18 |
Family
ID=31414278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988145570U Pending JPH0266089U (en) | 1988-11-08 | 1988-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0266089U (en) |
-
1988
- 1988-11-08 JP JP1988145570U patent/JPH0266089U/ja active Pending
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