JPS63105581A - Adjusting system for horizontal oscillation frequency - Google Patents

Adjusting system for horizontal oscillation frequency

Info

Publication number
JPS63105581A
JPS63105581A JP25125086A JP25125086A JPS63105581A JP S63105581 A JPS63105581 A JP S63105581A JP 25125086 A JP25125086 A JP 25125086A JP 25125086 A JP25125086 A JP 25125086A JP S63105581 A JPS63105581 A JP S63105581A
Authority
JP
Japan
Prior art keywords
horizontal
oscillation frequency
register
data
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.)
Granted
Application number
JP25125086A
Other languages
Japanese (ja)
Other versions
JP2569503B2 (en
Inventor
Takahiko Tamura
孝彦 田村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP61251250A priority Critical patent/JP2569503B2/en
Publication of JPS63105581A publication Critical patent/JPS63105581A/en
Application granted granted Critical
Publication of JP2569503B2 publication Critical patent/JP2569503B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Synchronizing For Television (AREA)

Abstract

PURPOSE:To share an Hf register provided on a deflection IC side, by rewriting the data of the Hf register by the data of a memory set and written in advance at a time of multiscan, and adjusting the oscillation frequency f of a horizontal oscillator. CONSTITUTION:An Hf0 data sent from a micro processor CPU is written in the Hf0 register, and by a register in which the data is rewritten at time of the multiscan, its output is supplied to the horizontal oscillator H-OSC via a digital/analog converter D/A. For example, the titled system is constituted so that the oscillation frequency can be switched to 15.75kHz in a first fH mode, 25kHz in a second fH mode, and 31. 5kHz in a third fH mode. Since the adjustment of the horizontal oscillation frequency in a multiscan type TV receiver can be performed by a bus line control system automatically, it is possible to reduce cost remarkably, and to improve productivity. Also, since only one Hf0 register to be provided on the deflection IC side is enough, it is possible to suppress the increase of the cost without increasing the area of an IC chip.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、マルチスキャン凰テレビジョン受像機の水平
発振周波数調整システムに関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a horizontal oscillation frequency adjustment system for a multi-scan television receiver.

〔発明の概要〕[Summary of the invention]

本発明は、マルチスキャン型テンビジョン受像機の水平
発振周波数の調整をバスライン・コントロール・システ
ムで行なうに当たり、マルチスキャン時の水平発振器の
発振周波数のずれを予め記憶したメモリのデータにより
水平発振周波数調整レジスタのデータを書替えて水平発
振器の発振周波数を微調整するようにしたものである。
The present invention adjusts the horizontal oscillation frequency of a multi-scan Ten Vision receiver using a bus line control system, and adjusts the horizontal oscillation frequency using data in a memory that stores in advance the deviation in the oscillation frequency of a horizontal oscillator during multi-scan. The oscillation frequency of the horizontal oscillator is finely adjusted by rewriting the data in the adjustment register.

〔従来の技術〕[Conventional technology]

水平周波数rHの異なる複数のテンビジョン送信信号を
受信するため、受信側において送信信号に合わせて水平
発掘周波数Hf oを変えるようにしたマルチスキャン
型テレビジョン受像機がある。−方、テレビジョン受像
機における各41の調整や制御等にかかるコストを大幅
に下げ、テレビジョン受像機の生産性を高めるものとし
て、近年バスライン・コントロール・システムが盛んに
研究され【キテいる。バスライン・コントロール・シス
テムとは、マイクロプロセッサCPUからバスラインを
介して送られて来るデータ信号により各種の調整や制御
を自動的に行なおうとするものである。
In order to receive a plurality of ten vision transmission signals having different horizontal frequencies rH, there is a multi-scan type television receiver in which the horizontal excavation frequency Hfo is changed in accordance with the transmission signal on the receiving side. - On the other hand, in recent years, bus line control systems have been actively researched as a way to significantly reduce the cost of adjusting and controlling each of the 41 components in television receivers and increase the productivity of television receivers. . A bus line control system attempts to automatically perform various adjustments and controls using data signals sent from a microprocessor CPU via a bus line.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

バスラインでテレビジョン受像機の偏向系をコントロー
ルする場合、水平発振周波数Hfoをレジスタに書込む
値によって調整することになるが、マルチスキャン型受
像機においては、各水平周波数rHについてそれぞれ調
整をしなければならないので偏向IC側に多くのHfo
A整用レジスタ(以下「Hfoレジスタ」という。)を
もたねばならず、それらのIC内部での占有面積が大き
くなりコストが上昇するという問題がある。
When controlling the deflection system of a television receiver using a bus line, the horizontal oscillation frequency Hfo is adjusted by the value written to the register, but in a multi-scan type receiver, each horizontal frequency rH is adjusted individually. Therefore, many HFOs are installed on the deflection IC side.
Since it is necessary to have A-register registers (hereinafter referred to as "Hfo registers"), there is a problem in that they occupy a large area inside the IC and increase costs.

したがって、本発明は、偏向系をバスラインでコントロ
ールするに際し、ICチップの面積減少を図りコストの
低下を目指すものである。
Therefore, the present invention aims at reducing the area of the IC chip and lowering the cost when controlling the deflection system using the bus line.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は、マルチスキャン型テレビジョン受像機におい
て偏向IC側に設けるHfoレジスタを1個にしてこれ
を共用とし、マルチスキャン時、予め設定して書込んで
あるメモリのデータによりHf0Vジスタのデータを書
替えて水平発振器の発振周波数foを調整するようにし
た。
The present invention provides a single Hfo register provided on the deflection IC side in a multi-scan type television receiver, which is shared.During multi-scan, the data of the Hf0V register is stored using data set and written in the memory in advance. I rewrote it to adjust the oscillation frequency fo of the horizontal oscillator.

〔作用〕[Effect]

Hf oレジスタが1個でよいので。そのIC内部にお
ける占有面積が小さくなりコストは低下する。
Only one Hfo register is required. The area occupied inside the IC is reduced, and the cost is reduced.

〔実施例〕〔Example〕

第1図は、本発明の基本的な実施例を示すブロック図で
ある。マイクロプロセッサCPUは、双方向性バスライ
ンを介して偏向ICと接続される。図の破線の内側が偏
向ICの部分である。マイクロプロセッサCPUには、
複数の水平周波数(fH)モードに対応する複数のHf
oデータを記憶した不揮発性メモリ群が付いている。図
では、メモリ1,2及び303個のみ示したが、メモリ
の数はrH奇モード数に応じて増やすことは勿論である
。Hfoレジスタは、マイクロプロセッサCPUから送
られてくるHfoデータが書込まれ、マルチスキャン時
にデータが書替えられるレジスタで、その出力はデジタ
ル・アナログ変換器D/Aを介して水平発振器H−O8
Cに供給される。水平発振器H−O8Cは、マルチスキ
ャン時に図示しないfHモード切換手段(例えばスイッ
チ)の選択動作に応じて出力され31.5KHzに発振
周波数が切換えられるようになっている。このとき、 
fHモード判別回路は、rHモード切換信号(普通は直
流)から選択されたfHモードがどれであるかを判別す
る。例えば第1 rH奇モード選択された場合、第1 
fHモードに対応する判別出力をバスラインを介してマ
イクロプロセッサCPUに送出する。
FIG. 1 is a block diagram showing a basic embodiment of the present invention. The microprocessor CPU is connected to the deflection IC via a bidirectional bus line. The part inside the broken line in the figure is the deflection IC. The microprocessor CPU has
Multiple Hfs corresponding to multiple horizontal frequency (fH) modes
It has a non-volatile memory group that stores o data. In the figure, only memories 1, 2, and 303 are shown, but the number of memories can of course be increased according to the number of rH odd modes. The Hfo register is a register in which the Hfo data sent from the microprocessor CPU is written and the data is rewritten during multi-scan, and its output is sent to the horizontal oscillator H-O8 via the digital-to-analog converter D/A.
C. The horizontal oscillator H-O8C is outputted and the oscillation frequency is switched to 31.5 KHz in response to a selection operation of an fH mode switching means (for example, a switch) not shown during multi-scanning. At this time,
The fH mode determination circuit determines which fH mode is selected from the rH mode switching signal (usually DC). For example, when the first rH odd mode is selected, the first
A determination output corresponding to the fH mode is sent to the microprocessor CPU via the bus line.

マイクロプロセッサCPUは、この判別出力を受けてH
foデータ・メモリ群から対応するメモリ、例えばメモ
リ1のデータを読出し、再びバスラインを介して偏向I
C内部のHf Qレジスタにそのデータを書込む。既に
データが書込まれている場合は、そのデータを書替える
。Hfoレジスタに書込まれたメモリ1のデータは、デ
ジタル・アナログ変換器D/Aを介して水平発振器H−
O8Cに印加され、その発振周波数foを正確な値15
.75 KHzに調整する。
Upon receiving this determination output, the microprocessor CPU
The data of the corresponding memory, for example memory 1, is read out from the fo data memory group, and the data of the deflection I is read out again via the bus line.
Write the data to the HfQ register inside C. If data has already been written, that data will be rewritten. The data in memory 1 written to the Hfo register is sent to the horizontal oscillator H- through the digital-to-analog converter D/A.
applied to O8C and set its oscillation frequency fo to an accurate value of 15
.. Adjust to 75 KHz.

ここで、水平発振器H−08Cは、rHモード切換信号
により対応する周波数に出力が切換えられるようになっ
ているが、どうしても誤差又はずれが生じる。Hf□ 
レジスタは、このような誤差(例えば±1KHz)の範
囲の微調整を行なうためのものである。
Here, although the output of the horizontal oscillator H-08C is switched to a corresponding frequency by the rH mode switching signal, errors or deviations inevitably occur. Hf□
The register is used to finely adjust the range of such an error (for example, ±1 KHz).

そこで、水平発振器H−080の発振周波数foをHf
Qレジスタのデータ分を加えて決よる所定の水平周波数
fHに一致させるAFC回路が設けられる。したがって
、Hfoデータ・メモリ群には、fHモード切換信号に
より切換えられる)l−O20の発振周波数f。
Therefore, the oscillation frequency fo of the horizontal oscillator H-080 is set to Hf
An AFC circuit is provided to match the frequency to a predetermined horizontal frequency fH determined by adding the data of the Q register. Therefore, the Hfo data memory group has the oscillation frequency f of l-O20 (switched by the fH mode switching signal).

の誤差分に相当するデータがテレビジョン受17!機毎
に決定されて書込まれることになる。なお、fHモード
判別回路は、当業者にとって容易に設計可能であるので
、詳細説明は省略する。
The data corresponding to the error of TV reception 17! It will be determined and written for each machine. Note that the fH mode discrimination circuit can be easily designed by those skilled in the art, so detailed explanation will be omitted.

〔発明の効果〕〔Effect of the invention〕

以上説明したとおり、本発明によれば、マルチスキャン
型テVビジョン受像機の水平発振周波数(7)ilHl
バスライン・コントロール・システムにより自動的に行
なえるので、コストの大幅低下及びテレビジョン受像機
の生産性を向上させることが可能となる。また、その際
、偏向IC側に設けるHfoレジスタが1個でよいので
、 ICチップの面積を大きくすることなくコストの増
加を抑えることができる。
As explained above, according to the present invention, the horizontal oscillation frequency (7)ilHl of a multi-scan television receiver is
Since this can be done automatically using the bus line control system, it is possible to significantly reduce costs and improve the productivity of television receivers. Further, in this case, since only one Hfo register is required on the deflection IC side, an increase in cost can be suppressed without increasing the area of the IC chip.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明の基本的な実施例を示すブロック図で
ある。 H−O20・・・・・・水平発振器、 CPU・・・・
・・マイクロプロセッサ、fH・・・・・・水平周波数
、Hfo・・・・・・水平発振周波数、fo・・・・・
・発振周波数。
FIG. 1 is a block diagram showing a basic embodiment of the present invention. H-O20...Horizontal oscillator, CPU...
...Microprocessor, fH...Horizontal frequency, Hfo...Horizontal oscillation frequency, fo...
・Oscillation frequency.

Claims (1)

【特許請求の範囲】 水平周波数モード切換信号により出力が複数の発振周波
数に切換えられる水平発振器と、 上記水平周波数モード切換信号から水平周波数モードを
判別し、判別出力をバスラインを介してマイクロプロセ
ッサに送る水平周波数モード判別回路と、 上記水平発振器の複数の発振周波数に対応するデータを
それぞれ記憶する水平発振周波数データ・メモリ群と、 上記水平周波数モード判別回路の出力に応じ上記マイク
ロプロセッサが上記メモリ群より選択的に読出す水平発
振周波数データをバスラインを介して書込むための1個
の水平発振周波数調整レジスタとを具え、 該調整レジスタに書込まれたデータにより上記水平発振
器の発振周波数が調整されることを特徴とする水平発振
周波数調整システム。
[Scope of Claims] A horizontal oscillator whose output is switched to a plurality of oscillation frequencies by a horizontal frequency mode switching signal; A horizontal frequency mode is determined from the horizontal frequency mode switching signal, and the determined output is sent to a microprocessor via a bus line. a horizontal frequency mode discriminating circuit to be transmitted; a horizontal oscillation frequency data memory group storing data corresponding to a plurality of oscillation frequencies of the horizontal oscillator; and one horizontal oscillation frequency adjustment register for writing horizontal oscillation frequency data to be read out more selectively via the bus line, and the oscillation frequency of the horizontal oscillator is adjusted by the data written to the adjustment register. A horizontal oscillation frequency adjustment system characterized by:
JP61251250A 1986-10-22 1986-10-22 Horizontal oscillation frequency adjustment system Expired - Fee Related JP2569503B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61251250A JP2569503B2 (en) 1986-10-22 1986-10-22 Horizontal oscillation frequency adjustment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61251250A JP2569503B2 (en) 1986-10-22 1986-10-22 Horizontal oscillation frequency adjustment system

Publications (2)

Publication Number Publication Date
JPS63105581A true JPS63105581A (en) 1988-05-10
JP2569503B2 JP2569503B2 (en) 1997-01-08

Family

ID=17219970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61251250A Expired - Fee Related JP2569503B2 (en) 1986-10-22 1986-10-22 Horizontal oscillation frequency adjustment system

Country Status (1)

Country Link
JP (1) JP2569503B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138283A (en) * 1990-12-27 1992-08-11 Mitsubishi Denki Kabushiki Kaisha Oscillation frequency control circuit
EP0979001A2 (en) * 1998-08-07 2000-02-09 Thomson Consumer Electronics, Inc. Horizontal frequency generation
EP0773671A3 (en) * 1995-11-09 2000-03-22 Sony Corporation Video display apparatus and method for synchronising a clock signal with the horizontal frequency of an input signal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138283A (en) * 1990-12-27 1992-08-11 Mitsubishi Denki Kabushiki Kaisha Oscillation frequency control circuit
EP0773671A3 (en) * 1995-11-09 2000-03-22 Sony Corporation Video display apparatus and method for synchronising a clock signal with the horizontal frequency of an input signal
EP0979001A2 (en) * 1998-08-07 2000-02-09 Thomson Consumer Electronics, Inc. Horizontal frequency generation
EP0979001A3 (en) * 1998-08-07 2000-11-02 Thomson Consumer Electronics, Inc. Horizontal frequency generation

Also Published As

Publication number Publication date
JP2569503B2 (en) 1997-01-08

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