JPH067644Y2 - Printing equipment - Google Patents
Printing equipmentInfo
- Publication number
- JPH067644Y2 JPH067644Y2 JP1987121582U JP12158287U JPH067644Y2 JP H067644 Y2 JPH067644 Y2 JP H067644Y2 JP 1987121582 U JP1987121582 U JP 1987121582U JP 12158287 U JP12158287 U JP 12158287U JP H067644 Y2 JPH067644 Y2 JP H067644Y2
- Authority
- JP
- Japan
- Prior art keywords
- sampling clock
- scanning frequency
- horizontal scanning
- video signal
- frequency
- 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.)
- Expired - Lifetime
Links
Landscapes
- Television Signal Processing For Recording (AREA)
Description
【考案の詳細な説明】 ＜産業上の利用分野＞ 本考案は、映像信号を記憶するメモリを備えた印画装置
に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a printing apparatus having a memory for storing a video signal.
＜考案の概要＞ 本考案は、映像信号を記憶するメモリを備えた印画装置
において、入力映像信号の水平走査周波数を検知し、そ
の周波数に応じてＡＤ変換器のクロック周波数を可変し
て入力映像信号をデジタル変換してメモリに記憶するこ
とにより、水平走査周波数が異なる映像信号であって
も、正しい縦横比の印画を行なえるようにしたものであ
る。<Outline of the Invention> The present invention is a printing apparatus having a memory for storing a video signal, detects the horizontal scanning frequency of the input video signal, and changes the clock frequency of the AD converter according to the frequency to detect the input video. By digitally converting the signal and storing it in a memory, it is possible to perform printing with a correct aspect ratio even with video signals having different horizontal scanning frequencies.
＜従来の技術＞ 従来、入力映像信号の水平走査周波数が異なる場合でも
同一のサンプリングクロックでＡＤ変換してメモリに記
憶した後、印画を行なっていた。<Prior Art> Conventionally, even when the horizontal scanning frequency of the input video signal is different, AD conversion is performed with the same sampling clock, the image is stored in the memory, and then the image is printed.
＜考案が解決しようとする問題点＞ パソコン映像とＮＴＳＣ映像では水平走査周波数が異な
る為に同一クロックでＡＤ変換してメモリに記憶すると
真円度（縦横比）に歪が生じていた。<Problems to be solved by the device> Since the horizontal scanning frequency is different between the personal computer image and the NTSC image, the circularity (aspect ratio) is distorted when AD conversion is performed with the same clock and the result is stored in the memory.
＜問題点を解決するための手段＞ 本考案では、入力映像信号の水平周波数を検知し、その
周波数に応じてＡＤ変換器のクロック周波数を可変し、
入力映像信号をデジタル変換してメモリに記憶する。<Means for Solving the Problems> In the present invention, the horizontal frequency of the input video signal is detected, and the clock frequency of the AD converter is changed according to the frequency.
The input video signal is digitally converted and stored in the memory.
＜作用＞ パソコン映像やＮＴＳＣ映像を自動的に区別してアスペ
クト比（縦横比）通りに記憶出来る。<Operation> PC images and NTSC images can be automatically distinguished and stored according to the aspect ratio (aspect ratio).
＜実施例＞ 第１図にブロック図を示す。<Example> FIG. 1 shows a block diagram.
静止画映像信号を水平周波数検知回路１に入力し、映像
信号の水平走査周波数を判断しその情報をＣＰＵ２に入
力する。ＣＰＵ２では、水平周波数検知回路からの情報
を基にしてサンプリングクロック発生回路４への分周比
を設定し出力する。The still image video signal is input to the horizontal frequency detection circuit 1, the horizontal scanning frequency of the video signal is determined, and the information is input to the CPU 2. The CPU 2 sets and outputs the frequency division ratio to the sampling clock generation circuit 4 based on the information from the horizontal frequency detection circuit.
その分周比により決定されたクロック１が、サンプリン
グクロック発生回路４からＡ／Ｄ変換器３及び印画制御
回路５に入力される。The clock 1 determined by the frequency division ratio is input from the sampling clock generation circuit 4 to the A / D converter 3 and the print control circuit 5.
又、映像入力はＡ／Ｄ変換器３でクロック１のタイミン
グでデジタル量に変換されその情報は印画制御回路５に
入力される。Further, the video input is converted into a digital amount by the A / D converter 3 at the timing of the clock 1 and the information is input to the print control circuit 5.
印画制御回路５では、映像のデジタル情報を基にしてサ
ーマルヘッド６のコントロール信号を作成し、サーマル
ヘッド６に通電することにより印画出来る。The print control circuit 5 can print by generating a control signal for the thermal head 6 based on the digital information of the image and energizing the thermal head 6.
＜考案の効果＞ 静止画入力映像信号の水平走査周波数が異なる場合で
も、自動的に差を検知し、必要に応じて自由に分周比デ
ータを設定して出力することができるので、例えばプリ
ンタの特性に合わせて、いつでも正しい縦横比で印画を
行うことが可能である。<Effects of the Invention> Even when the horizontal scanning frequency of the still image input video signal is different, the difference can be automatically detected, and the division ratio data can be freely set and output as needed. It is possible to print with the correct aspect ratio at any time according to the characteristics of.
第１図は本考案の実施例のブロック回路図である。 FIG. 1 is a block circuit diagram of an embodiment of the present invention.
Claims (1)
Ｄ変換器と、 該ＡＤ変換器のＡＤ変換のタイミングを決定するサンプ
リングクロックを発生するためのサンプリングクロック
発生手段とを備えた印画装置において、 上記静止画入力映像信号の水平走査周波数を検知する水
平走査周波数検知手段と、 該水平走査周波数検知手段からの検知信号に基づいて上
記サンプリングクロックの分周比データを設定する設定
手段とを備え、 上記設定手段において設定された分周比データにより、
上記サンプリングクロック発生手段の原発振クロックを
分周してサンプリングクロックの周波数を可変としたこ
とを特徴とする印画装置。1. A for digitally converting a still image input video signal
A printing apparatus comprising a D converter and a sampling clock generating means for generating a sampling clock for determining the AD conversion timing of the AD converter, wherein a horizontal scanning frequency for detecting the horizontal scanning frequency of the still image input video signal is detected. Scanning frequency detecting means, and setting means for setting the dividing ratio data of the sampling clock based on the detection signal from the horizontal scanning frequency detecting means, the dividing ratio data set by the setting means,
An image printing apparatus characterized in that a frequency of a sampling clock is variable by dividing an original oscillation clock of the sampling clock generating means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987121582U JPH067644Y2 (en) | 1987-08-07 | 1987-08-07 | Printing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987121582U JPH067644Y2 (en) | 1987-08-07 | 1987-08-07 | Printing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6428069U JPS6428069U (en) | 1989-02-17 |
| JPH067644Y2 true JPH067644Y2 (en) | 1994-02-23 |
Family
ID=31368717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987121582U Expired - Lifetime JPH067644Y2 (en) | 1987-08-07 | 1987-08-07 | Printing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067644Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2568758B2 (en) * | 1991-01-10 | 1997-01-08 | 株式会社タツノ・メカトロニクス | Auto nozzle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58127765U (en) * | 1982-02-22 | 1983-08-30 | 株式会社精工舎 | Image signal sampling pulse generation circuit |
| JPS6412691A (en) * | 1987-07-06 | 1989-01-17 | Mitsubishi Electric Corp | Video signal sampling circuit |
-
1987
- 1987-08-07 JP JP1987121582U patent/JPH067644Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6428069U (en) | 1989-02-17 |
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