JPS6233093U - - Google Patents
Info
- Publication number
- JPS6233093U JPS6233093U JP12318585U JP12318585U JPS6233093U JP S6233093 U JPS6233093 U JP S6233093U JP 12318585 U JP12318585 U JP 12318585U JP 12318585 U JP12318585 U JP 12318585U JP S6233093 U JPS6233093 U JP S6233093U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- polarity
- synchronization signal
- horizontal
- input
- 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
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000003786 synthesis reaction Methods 0.000 claims description 7
- 230000010354 integration Effects 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Synchronizing For Television (AREA)
Description
第１図は、この考案の一実施例を示す同期信号
合成回路を示す図、第２図はこの考案の他の実施
例を示す図、第３図は従来の同期信号合成回路を
示す図、第４図は同期信号合成回路のタイミング
チヤート図である。
１……水平同期信号入力端子、２……垂直同期
信号入力端子、３０，１０……抵抗、４０，１１
……コンデンサ、５０，５１……近似積分回路（
極性判定回路）、５，６……ゲート（極性設定回
路）、７……ゲート（信号合成回路）、８……ゲ
ート、９……抵抗群。なお図中同一符号は同一又
は相当部分を示す。
FIG. 1 is a diagram showing a synchronization signal synthesis circuit showing one embodiment of this invention, FIG. 2 is a diagram showing another embodiment of this invention, and FIG. 3 is a diagram showing a conventional synchronization signal synthesis circuit. FIG. 4 is a timing chart of the synchronization signal synthesis circuit. 1...Horizontal synchronization signal input terminal, 2...Vertical synchronization signal input terminal, 30, 10...Resistor, 40, 11
... Capacitor, 50, 51 ... Approximate integral circuit (
5, 6...gate (polarity setting circuit), 7...gate (signal synthesis circuit), 8...gate, 9...resistance group. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
とも一方の極性を自動判定する極性判定回路と、 該判定回路の出力に応じて上記水平同期信号お
よび垂直同期信号の極性を一定方向に設定する極
性設定回路と、該極性設定回路からの水平、垂直
同期信号を合成する信号合成回路とを備えたこと
を特徴とする同期信号合成回路。 (2) 上記極性設定回路はそれぞれの一方の入力
に水平、垂直同期信号が入力される第１、第２の
排他的論理和ゲートであり、上記極性判定回路は
上記水平または垂直同期信号の少なくとも一方を
積分し、該積分出力を上記第１、第２の排他的論
理和ゲートの他方の入力に出力する近似積分回路
であることを特徴とする実用新案登録請求の範囲
第(1)項記載の同期信号合成回路。[Claims for Utility Model Registration] (1) A polarity determination circuit that automatically determines the polarity of at least one of a horizontal synchronization signal or a vertical synchronization signal, and a polarity determination circuit that automatically determines the polarity of the horizontal synchronization signal and the vertical synchronization signal according to the output of the determination circuit. What is claimed is: 1. A synchronization signal synthesis circuit comprising: a polarity setting circuit that sets the polarity in a certain direction; and a signal synthesis circuit that synthesizes horizontal and vertical synchronization signals from the polarity setting circuit. (2) The polarity setting circuit is a first and second exclusive OR gate to which horizontal and vertical synchronizing signals are input to one input of each, and the polarity determining circuit is a Utility model registration claim 1, characterized in that the circuit is an approximate integration circuit that integrates one of the signals and outputs the integrated output to the other input of the first and second exclusive OR gates. synchronous signal synthesis circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12318585U JPS6233093U (en) | 1985-08-09 | 1985-08-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12318585U JPS6233093U (en) | 1985-08-09 | 1985-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6233093U true JPS6233093U (en) | 1987-02-27 |
Family
ID=31014057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12318585U Pending JPS6233093U (en) | 1985-08-09 | 1985-08-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6233093U (en) |
-
1985
- 1985-08-09 JP JP12318585U patent/JPS6233093U/ja active Pending
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