GB2433655A - Extra-monitor control circuit and transmission system for a monitor - Google Patents

Extra-monitor control circuit and transmission system for a monitor Download PDF

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Publication number
GB2433655A
GB2433655A GB0526456A GB0526456A GB2433655A GB 2433655 A GB2433655 A GB 2433655A GB 0526456 A GB0526456 A GB 0526456A GB 0526456 A GB0526456 A GB 0526456A GB 2433655 A GB2433655 A GB 2433655A
Authority
GB
United Kingdom
Prior art keywords
monitor
extra
control circuit
transmission system
circuit
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.)
Withdrawn
Application number
GB0526456A
Other versions
GB0526456D0 (en
Inventor
Heng Chun Ho
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.)
Viewsonic Corp
Original Assignee
Viewsonic 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 Viewsonic Corp filed Critical Viewsonic Corp
Priority to GB0526456A priority Critical patent/GB2433655A/en
Publication of GB0526456D0 publication Critical patent/GB0526456D0/en
Publication of GB2433655A publication Critical patent/GB2433655A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096—Details of the interface to the display terminal specific for a flat panel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/08—Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

An extra - monitor control circuit and transmission system for a monitor includes an extra-monitor control circuit system (6) having a scaler circuit (63), an On Screen Display (OSD) circuit (64), and a DC/DC converting circuit (65) provided thereon. The extra-monitor control circuit system (6) is located at a position outside a monitor (8) and connected to the monitor (8) via a transmission system consisting one single cable (7) and connectors (71) thereof. The one single cable and the connectors (71) thereof transmit both signals and power to the monitor (8) from a personal computer (PC) host to thereby reduce the monitor manufacturing cost and eliminate the problems of distorted signals and signal compatibility.

Description

<p>EXTRA-MONITOR CONTROL CIRCUIT AND TRANSMISSION SYSTEM</p>
<p>FOR A MONITOR</p>
<p>FIELD OF THE INVENTION</p>
<p>The present invention relates to an extra-monitor control circuit and transmission system for a monitor, and more particularly to a monitor control circuit and transmission system that includes monitor control circuits and a DC/DC converting circuit, which are provided at a position outside the monitor to form either an independent unit adapted to insert into an expansion slot on a PC host or be integrated into a PC graphic card, and one single cable and connectors thereof for transmitting both signals and power from the PC host to the monitor, enabling reduced monitor manufacturing cost and enhanced monitor display quality.</p>
<p>BACKGROUND OF THE INVENTION</p>
<p>Generally, circuits inside a liquid crystal display (LCD) monitor are divided into an LCD control module and an LCD panel module. The LCD control module is mainly used to communicate a personal computer (PC) host with the LCD panel module. Fig. 1 shows various control circuits included in the control module. As shown, the PC is internally provided with a graphic card 1, on which a main circuit 11 and a video Graphics Array (VGA) circuit 12 are provided. The graphic card 1 is connected to the monitor 3 via at least two cables 2 and connectors 21 thereof. The monitor 3 is internally provided with an On Screen Display (OSD) circuit 31, a scaler circuit 32, and a Low Voltage Differential Signal (LVDS) circuit 33. A separate cable is used to connect a city power source to an AC converting circuit 4 in the monitor 3, so that city power is converted by and supplied via the AC converting circuit 4 to the monitor 3 for use. In the above-described conventional monitor control circuit, since the monitor 3 has multiple types of circuits and cable connections, it requires higher manufacturing cost. Moreover, signals tend to become distorted after D/A and A/D conversions, and have the problem of poor compatibility with various circuits. Furthermore, since multiple cables 2 and connectors 21 are needed to connect the graphic card ito themonitor3, complicate process and high cost are involved in manufacturing the monitor with internally provided control circuits and AC converting circuit.</p>
<p>SUMMARY OF THE INVENTION</p>
<p>A primary object of the present invention is to provide an extra-monitor control circuit and transmission system, which enables reduced monitor manufacturing cost and enhanced monitor display quality.</p>
<p>To achieve the above and other objects, the extra-monitor control circuit and transmission system according to the present invention includes an extra-monitor control circuit system for monitor that is located outside a monitor. The extra-monitor control circuit system includes a scaler circuit, an OSD circuit, and a DC/DC converting circuit. Signals and power are transmitted from the extra-monitor control circuit system to the monitor via the same cable and connectors thereof, so that the monitor manufacturing cost is reduced, and the problems of distorted signals and signal compatibility are eliminated.</p>
<p>In the present invention, the extra-monitor control circuit system may be independently formed for inserting1ntoaflexpafl5j0 slotonapC, orbeintegrated into a PC graphic card.</p>
<p>The DC/DC converting circuit of the extra-monitor control circuit system of the present invention converts power supplied from a power supply of the PC and supplies the converted power to the monitor. it is not necessary to provide a separate AC converting circuit in the monitor, and manufacturing cost for the monitor is reduced accordingly.</p>
<p>In the extra-monitor control circuit and transmission system of the present invention, only one single cable is provided to connect the extra-monitor control circuit system to the monitor. That is, the same cable and the connectors thereof are used to transmit both signals and power from the PC host to the monitor.</p>
<p>BRIEF DESCRIPTION OF THE DRAWINGS</p>
<p>The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein Fig. 1 is a block diagram of a conventional control circuit system for a monitor; and Fig. 2 is a block diagram of an extra-monitor control circuit and transmissj0 system for a monitor according to the present invention.</p>
<p>DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS</p>
<p>Please refer to Fig. 2 which illustrates a block diagram of an extra-monitor control circuit and transmission system for a monitor according to the present invention.</p>
<p>As shown, the extra-monitor control circuit and transmission system of the present invention includes an extra-monitor control circuit system 6, in which a scaler circuit 63, an On Screen Display (OSD) circuit 64, and a DC/DC converting circuit 65 are provided.</p>
<p>The extra-monitor Control circuit system 6 of the present invention may be independently provided and inserted into an expansion slot on a personal computer (PC) for use, or be integrated into a PC graphic card, on which a main circuit 61 and a VGA circuit 62 are provided. The extra-monitor control circuit system 6 is connected to a monitor 8 via one single cable 7 and connectors ii thereof. It is understood the number of contacts on the original connectors 71 is increased accordingly, so that both signals and power are transmitted via the one single cable 7 and the connectors 71 thereof.</p>
<p>The DC/DC converting circuit 65 provided on the extra-monitor control circuit system 6 converts and boosts the voltage of a PC power supply, so as to supply the power needed by the monitor 8. Therefore, the AC converting circuit 4 that is conventionally provided in the monitor for supplying power to the monitor is omitted in the present invention. In this manner, the manufacturing cost of the monitor can be reduced, and the monitor can be more conveniently assembled to reduce the bad yield possibly occurred during assembling of the monitor.</p>
<p>With the extra-monitor control circuit and transmission system according to the present invention, at least the following advantages can be achieved: 1. Since various control circuits conventionally provided inside a monitor are now provided on an extra-monitor control circuit system adapted to insert into a PC expansion slot or integrate into a PC graphic card, the process and the techniques required for manufacturing a monitor are simplified, and the manufacturing cost of the monitor is reduced, too.</p>
<p>2. The conventional A/D and D/A conversions are simplified in the integrated extra-monitor control circuit system, and the problem of distorted signals due to signal conversions can be avoided to achieve accurate digital signal transmission.</p>
<p>3. The provision of a control circuit block in a PC graphic card allows the best possible scaling function.</p>
<p>4. The extra-monitor control circuit system of the present invention is widely applicable to different monitor designs.</p>
<p>5. The problem of signal compatibility is eliminated, allowing the present invention to be widely employed in different types of monitors.</p>
<p>6. The transmission system between a PC and a monitor is simplified by using only one single cable and the connectors thereof to transmit both the signal andpower supply needed by the monitor. This is also the reason why the monitor manufacturing process is simplified and the manufacturing cost thereof is reduced.</p>

Claims (1)

  1. <p>What is claimed is: i.An extra-monitor control circuit and transmission
    system for a monitor, comprising: an extra-monitor control circuit system provided at a position outside a monitor; a DC/DC converting circuit adapted to convert power supplied from a power supply of a personal computer (PC) hostand supply the convertedpower to saidmonitor; and a transmission system including one single cable and connectors thereof for connecting said PC host to said monitor to transmit both signals and power to said monitor from said PC host.</p>
    <p>2. An extra-monitor control circuit and transmission system constructed substantially as hereinbefore described with reference to Figure 2 of the accompanying drawings.</p>
GB0526456A 2005-12-23 2005-12-23 Extra-monitor control circuit and transmission system for a monitor Withdrawn GB2433655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0526456A GB2433655A (en) 2005-12-23 2005-12-23 Extra-monitor control circuit and transmission system for a monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0526456A GB2433655A (en) 2005-12-23 2005-12-23 Extra-monitor control circuit and transmission system for a monitor

Publications (2)

Publication Number Publication Date
GB0526456D0 GB0526456D0 (en) 2006-02-08
GB2433655A true GB2433655A (en) 2007-06-27

Family

ID=35841248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0526456A Withdrawn GB2433655A (en) 2005-12-23 2005-12-23 Extra-monitor control circuit and transmission system for a monitor

Country Status (1)

Country Link
GB (1) GB2433655A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886979A (en) * 1988-03-01 1989-12-12 Chang San Julie Power source circuit device for monitors and host computers
US6299464B1 (en) * 2000-05-30 2001-10-09 Rever Computer Inc. Multimonitor notebook
US20030107566A1 (en) * 2001-12-08 2003-06-12 Samsung Electronics Co., Ltd. Display apparatus and method of supplying power to USB device thereof
US20040210783A1 (en) * 2003-04-16 2004-10-21 Min-Jye Chen Monitor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886979A (en) * 1988-03-01 1989-12-12 Chang San Julie Power source circuit device for monitors and host computers
US6299464B1 (en) * 2000-05-30 2001-10-09 Rever Computer Inc. Multimonitor notebook
US20030107566A1 (en) * 2001-12-08 2003-06-12 Samsung Electronics Co., Ltd. Display apparatus and method of supplying power to USB device thereof
US20040210783A1 (en) * 2003-04-16 2004-10-21 Min-Jye Chen Monitor

Also Published As

Publication number Publication date
GB0526456D0 (en) 2006-02-08

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)