CN100421098C - Portable computer able to display external image signals - Google Patents
Portable computer able to display external image signals Download PDFInfo
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- CN100421098C CN100421098C CNB021219087A CN02121908A CN100421098C CN 100421098 C CN100421098 C CN 100421098C CN B021219087 A CNB021219087 A CN B021219087A CN 02121908 A CN02121908 A CN 02121908A CN 100421098 C CN100421098 C CN 100421098C
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Abstract
The present invention relates to a portable computer capable of displaying external image signals, which can receive an external image signal generated by an image signal generating device from the outside. The present invention comprises a computer body, a signal transfer assembly and a display, wherein the computer body generates an inner image signal in a first working state and stops generating the inner image signal in a second working state; the signal transfer assembly is connected to a signal output path of the image signal generating device and used for receiving the external image signal outputted by the signal output path and then outputting the external image signal; the display is electrically connected to the computer body and the signal transfer assembly, receives the inner image signal generated by the computer body in the first working state and displays the inner image signal; when the computer body stops generating the inner image signal in the second working state, the display can receive and display the external image signal outputted by the signal transfer assembly.
Description
Technical field
The present invention relates to a kind of portable computer, refer to a kind of portable computer of able to display external image signals especially.
Background technology
Along with progress of science and technology, the Portable notebook computer uses also more and more general for human life brings many facilities.
Fig. 1 (a) is the structural representation of known notebook computer, mainly constituted by a LCD (LCDdisplay) 10 and a basic computer 11, (Low Voltage Differential Signaling, LVDS) accept image control chip (graphics controller) 111 image datas of being exported in the basic computer 11 and show by receiver 101 by Low Voltage Differential Signal for LCD 10.
And the signal output terminal by basic computer 11 back sides, this image control chip 111 also can meet (Digital Visual Interface via a digital video, DVI) connector or image data is delivered to other cathode ray tube screen (Cathode Ray Tube monitors, CRT monitors) outward to simulation connector (a D-sub Connector) 112 or the digital screen of digital visual interface (DVI digital monitors) 12 shows.
Wherein the image data exported of this image control chip 111 needs just can be sent to LCD 10 by a Low Voltage Differential Signal forwarder (LVDS Transmitter) 113.Image data to be seen off outward as for this image control chip 111, also need (Transmission Minimized Differential Signaling TMDSTransmitter) 114 be sent to DVI connector or D-sub connector with image data by the differential signal transmitter of minimum.
Fig. 1 (b) is the structural representation of another known notebook computer, the textural difference of itself and Fig. 1 (a) is that this LCD 10 is to use TMDS receiver 102 to receive image data, and the image data that basic computer 11 then needs to use TMDS forwarder 115 that image control chip 111 is exported is sent to LCD 10.
Fig. 1 (c) is the structural representation of another known notebook computer, and the textural difference of itself and Fig. 1 (a) is to be used for image data is sent in the LVDS forwarder 113 of LCD 10 and is built in this image control chip 111.
In above-mentioned any means known, when the power supply of basic computer 11 is not unlocked and during the operating system off-duty, LCD 10 all is in idle state and fails work.And it is well known, employed its fetch long price of large scale liquid crystal display of notebook computer, as when operating system and central processing unit are not activated, LCD 10 can't be brought into play its advantage fully because of doing other work, will waste valuable resource and cause the loss of money.And the existing function of supporting double screen output of operating system is arranged now, use as need and then must buy more another screen in addition, this will increase user's cost and reduce the wish of its use.And how to improve the disappearance of above-mentioned any means known, be a development fundamental purpose of the present invention.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of portable computer of able to display external image signals, can receive the external image signals that the signal of video signal generation device that comes from the outside is produced, with the utilization factor that improves display with dual display function is provided.
In order to reach purpose of the present invention, the invention provides a kind of portable computer of able to display external image signals, the external image signals that the signal of video signal generation device that reception comes from the outside is produced, comprise: a basic computer, under one first duty, produce an inner projection signal, and under one second duty, stop to produce this inside signal of video signal; One signal converting assembly is connected in a signal path output of this image generation device, is exported after receiving this external image signals that this signal path output exports; An and display, be electrically connected on this basic computer and this signal converting assembly, receive this inside signal of video signal that this basic computer produced and shown in this first duty, when this basic computer stopped to produce this inside signal of video signal under this second duty, this display just can receive and show this external image signals of this signal converting assembly output.
According to above-mentioned conception, the state that this first duty is moved by the control of an operating system in the portable computer of the present invention for this basic computer.
According to above-mentioned conception, this second duty is not subjected to the control state out of service of an operating system in the portable computer of the present invention for this basic computer.
According to above-mentioned conception, this external image signals is the external digital modulation signal of video signal of minimum differential wave (TMDS) form in the portable computer of the present invention.
According to above-mentioned conception, this display comprises a receiver in the portable computer of the present invention, in order to receive this external digital modulation signal of video signal or should the inside signal of video signal.
According to above-mentioned conception, in the portable computer of the present invention when this receiver is a Low Voltage Differential Signal (LVDS) receiver, this signal converting assembly comprises: a digital visual interface (DVI) connector is connected in this signal path output, in order to receive this external digital modulation signal of video signal; One first minimum differential wave (TMDS) receiver is connected in this digital visual interface connector, in order to being reduced into a digital image data by external digital modulation signal of video signal; One second Low Voltage Differential Signal forwarder is connected in this minimum differential signal receiver, in order to be exported behind the digital modulation image data that this digital image data is converted to one first Low Voltage Differential Signal (LVDS) form.
According to above-mentioned conception, should be produced by an image control chip (graphics controller) by the inside signal of video signal in the portable computer of the present invention, and should inside signal of video signal output by one first Low Voltage Differential Signal (LVDS) forwarder under this first duty.
According to above-mentioned conception, in the portable computer of the present invention when this receiver that this display comprised is minimum differential wave (TMDS) receiver, this signal converting assembly comprises: a digital visual interface (DVI) connector, be connected in this signal path output, in order to receive this external digital modulation signal of video signal; One first minimum differential wave (TMDS) forwarder is connected in this digital visual interface connector, in order to directly should export by external digital modulation signal of video signal.
According to above-mentioned conception, should be produced by an image control chip (graphics controller) by the inside signal of video signal in the portable computer of the present invention, and should inside signal of video signal output by one second minimum differential wave (TMDS) forwarder under this first duty.
According to above-mentioned conception, in the portable computer of the present invention this signal of video signal generation device be a laptop computer (laptop), a desktop PC (desktop), a personal digital assistant (Personal Digital Assistant, PDA) and a mobile phone (Cellar Phone) one of them or other can produce the device of signal of video signal.
According to above-mentioned conception, this display is a flat-panel screens in the portable computer of the present invention.
According to above-mentioned conception, this flat-panel screens is a LCD in the portable computer of the present invention.
In order to achieve the above object, the present invention provides a kind of portable computer of able to display external image signals again, the external image signals that the signal of video signal generation device that reception comes from the outside is produced comprises: a basic computer, in order to produce an inner signal of video signal; One signal converting assembly, be connected in a signal path output and this basic computer of this signal of video signal generation device, in order to receive this external image signals and should the inside signal of video signal, and then in one first duty, export this inside signal of video signal, and in one second duty, export this external image signals; And a display, be electrically connected on this signal converting assembly, show this inside signal of video signal or this external image signals that are received.
According to above-mentioned conception, the state that this first duty is moved by the control of an operating system in the portable computer of the present invention for this basic computer.
According to above-mentioned conception, this second duty is not subjected to the control state out of service of an operating system in the portable computer of the present invention for this basic computer.
According to above-mentioned conception, this external image signals and this inside signal of video signal are the digital modulation signal of video signal of minimum differential wave (TMDS) form in the portable computer of the present invention.
According to above-mentioned conception, this display comprises a receiver in the portable computer of the present invention, in order to receive this external digital modulation signal of video signal or this internal digital modulation signal of video signal.
According to above-mentioned conception, in the portable computer of the present invention when this receiver is a Low Voltage Differential Signal (LVDS) receiver, this signal converting assembly comprises: a digital visual interface (DVI) connector is connected in this signal path output, in order to receive this external digital modulation signal of video signal; One minimum differential wave (TMDS) receiver is connected in this digital visual interface connector and this basic computer, in order to should external digital modulation signal of video signal or this internal digital modulation signal of video signal is reduced into a digital image data; One Low Voltage Differential Signal forwarder is connected in this minimum differential signal receiver, in order to be exported behind the digital modulation image data that this digital image data is converted to a Low Voltage Differential Signal (LVDS) form.
According to above-mentioned conception, in the portable computer of the present invention when this receiver that this display comprised is minimum differential wave (TMDS) receiver, this signal converting assembly comprises: a digital visual interface (DVI) connector, be connected in this signal path output, in order to receive this external digital modulation signal of video signal; One minimum differential wave (TMDS) forwarder is connected in this digital visual interface connector and this basic computer, in order to directly should external digital modulation signal of video signal or the output of this internal digital modulation signal of video signal.
According to above-mentioned conception, in the portable computer of the present invention this signal of video signal generation device be a laptop computer (laptop), a desktop PC (desktop), a personal digital assistant (Personal Digital Assistant, PDA) and a mobile phone (Cellar Phone) one of them or other can produce the device of signal of video signal.
According to above-mentioned conception, this display is a flat-panel screens in the portable computer of the present invention.
According to above-mentioned conception, this flat-panel screens is a LCD in the portable computer of the present invention.
Description of drawings
Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c) are the structural representations of known notebook computer.
Fig. 2 (a), Fig. 2 (b) and Fig. 2 (c) are the structural representations of the present invention's first preferred embodiment.
Fig. 3 (a), Fig. 3 (b) are the structural representations of the present invention's second preferred embodiment.
Embodiment
Fig. 2 (a) is the structural representation of the present invention's first preferred embodiment, and portable computer of the present invention mainly comprises a basic computer 20, a signal converting assembly 21 and a LCD 22.
When this basic computer 20 be subjected to an operating system control and when in running order, to produce a digital image signal by its inner image control chip (graphics controller) 201, and exported after this digital image signal being converted to the digital modulation signal of video signal of a LVDS form by first Low Voltage Differential Signal (LVDS) forwarder 202, make the LVDS receiver 221 of these LCD 22 inside receive these numeral modulation signal of video signal and show.
When this basic computer 20 is not subjected to the control of an operating system and is in out-of-work state, portable computer of the present invention can be connected in a signal path output 24 of a signal of video signal generation device 23 by digital visual interface (DVI) connector 207, be used for receiving the digital modulation signal of video signal of minimum differential wave (TMDS) form that the signal of video signal generation device 23 that comes from the outside produced, and by a TMDS receiver 203 receptions, because DVI connector 207 can only receive the signal of TMDS form, and 22 signal formats that can receive of LCD are LVDS, therefore after needing the digital modulation signal of video signal of this TMDS form to be reduced into a digital image data by a TMDS receiver 203, be resent to the 2nd follow-up LVDS forwarder 204 and this digital image data converted to the digital modulation signal of video signal of LVDS form, receive and demonstration for this LCD 22, and then reach the digital image signal that the LCD that can utilize portable computer of the present invention shows that extraneous signal of video signal generation device 23 is exported.
As for this signal of video signal generation device can be a laptop computer (laptop), a desktop PC (desktop), a personal digital assistant (Personal Digital Assistant, PDA) and a mobile phone (Cellar Phone) one of them or other any device that can produce signal of video signal.This signal path output can be a signal wire or transmits by Radio Transmission Technology.And the operating system that laptop computer (laptop) or desktop PC (desktop) are suitable for can be window series, can be Plam or WinCE as for the operating system that this personal digital assistant was suitable for.
Fig. 2 (b) is another structural representation of the present invention's first preferred embodiment, the discrepancy of itself and Fig. 2 (a) is that LCD 22 uses the receiver 222 of TMDS forms, identical with the form of 207 energy received signals of DVI connector, therefore convert the digital modulating signal of other form after in Fig. 2 (b), not needing earlier the digital modulation signal of video signal that is received to be reduced into digital image data again to, export LCD 22 to and only need that the signal that DVI connector 207 is received directly is sent to a TMDS forwarder 205.The digital image signal of being exported as for image control chip 201 then changes by 206 transmission of the 2nd TMDS forwarder.
Fig. 2 (c) is another structural representation of the present invention's first preferred embodiment, and the discrepancy of itself and Fig. 2 (a) only is that a LVDS forwarder 202 is built in the image control chip 201 in being.
Fig. 3 (a) is the structural representation of the present invention's second preferred embodiment.Its different image control chips 201 that are in basic computer 20 with the first preferred embodiment circuit structure are to share the 2nd LVDS forwarder 204 with a TMDS receiver 203.When this basic computer 20 is subjected to the control of operating system and enters duty, the internal digital modulation signal of video signal that its inner image control chip (graphicscontroller) 20 is produced will be output to LCD 22 demonstrations, and when this basic computer 20 is not subjected to the control of operating system and quits work, DVI connector 207 by the present invention inwardly imports just can use the LCD of portable computer of the present invention to show the digital modulation signal of video signal that extraneous signal of video signal generation device 23 is exported.
Fig. 3 (b) is another structural representation of the present invention's second preferred embodiment.The difference of itself and Fig. 3 (a) is that LCD 22 uses the receiver 222 of TMDS forms, identical with 207 signal formats that can receive of DVI connector, export LCD 22 to and get final product so only need that the signal that DVI connector 207 be received directly is sent to a TMDS forwarder 205.
In sum, portable computer of the present invention can not utilize its LCD to come display external image when basic computer is subjected to the control of operating system and quits work really, can reach the advantage that makes full use of its LCD, allow the user not need to buy more in addition under the situation of another screen, reach the requirement of double screen output, hereat have industrial value, and then reach development purpose of the present invention.
The present invention all should belong to the protection domain of claim of the present invention by equivalents that the personage did and the modification of haveing the knack of this technology.
Claims (10)
1. the portable computer of an able to display external image signals can receive the external image signals that the signal of video signal generation device that comes from the outside is produced, and it is characterized in that comprising:
One basic computer produces an inner signal of video signal, and stop to produce this inside signal of video signal under one second duty under one first duty;
One signal converting assembly is connected in a signal path output of this image generation device, is exported after receiving this external image signals that this signal path output exports; And
One display, be electrically connected on this basic computer and this signal converting assembly, receive this inside signal of video signal that this basic computer produced and shown in this first duty, when this basic computer stopped to produce this inside signal of video signal under this second duty, this display just can receive and show this external image signals of this signal converting assembly output.
2. portable computer as claimed in claim 1, it is characterized in that this first duty is in the state of operation for this basic computer is subjected to the control of an operating system, this second duty is not subjected to the control state out of service of an operating system for this basic computer.
3. portable computer as claimed in claim 1, it is characterized in that this display comprises a receiver, in order to receiving this external digital modulation signal of video signal or should the inside signal of video signal, and this external image signals is the external digital modulation signal of video signal of minimum differential wave (TMDS) form.
4. portable computer as claimed in claim 3, the receiver that it is characterized in that this display are a Low Voltage Differential Signal (LVDS) receiver, and this signal converting assembly comprises:
One digital visual interface (DVI) connector is connected in this signal path output, in order to receive this external digital modulation signal of video signal;
One first minimum differential wave (TMDS) receiver is connected in this digital visual interface connector, in order to being reduced into a digital image data by external digital modulation signal of video signal;
One second Low Voltage Differential Signal forwarder is connected in this first minimum differential signal receiver, in order to be exported behind the digital modulation image data that this digital image data is converted to one first Low Voltage Differential Signal (LVDS) form.
5. as claim 3 a described portable computer, the receiver that it is characterized in that this display is minimum differential wave (TMDS) receiver, and this signal converting assembly comprises:
One digital visual interface (DVI) connector is connected in this signal path output, in order to receive this external digital modulation signal of video signal; And
One first minimum differential wave (TMDS) forwarder is connected in this digital visual interface connector, in order to directly should export by external digital modulation signal of video signal.
6. portable computer as claimed in claim 1, it is characterized in that this inside signal of video signal is produced by an image control chip, and under this first duty, should export by the inside signal of video signal by-the first Low Voltage Differential Signal (LVDS) forwarder or one second minimum differential wave (TMDS) forwarder, and this signal of video signal generation device is selected from a laptop computer, a desktop PC, a personal digital assistant and a mobile phone one of them, and this display is a flat-panel screens, and this flat-panel screens is a LCD.
7. the portable computer of an able to display external image signals can receive the external image signals that the signal of video signal generation device that comes from the outside is produced, and it is characterized in that comprising:
One basic computer is in order to produce an inner signal of video signal;
One signal converting assembly, be connected in this signal of video signal generation device-signal path output and this basic computer, in order to receive this external image signals and should the inside signal of video signal, and then in one first duty, export this inside signal of video signal, and in one second duty, export this external image signals in addition; And
One display is electrically connected on this signal converting assembly, shows this inside signal of video signal or this external image signals that are received.
8. portable computer as claimed in claim 7, it is characterized in that this external image signals and this inside signal of video signal are the digital modulation signal of video signal of minimum differential wave (TMDS) form, and this display comprises a receiver, in order to receive this external digital modulation signal of video signal or this internal digital modulation signal of video signal.
9. portable computer as claimed in claim 8, the receiver that it is characterized in that this display are a Low Voltage Differential Signal (LVDS) receiver, and this signal converting assembly comprises:
One digital visual interface (DVI) connector is connected in this signal path output, in order to receive this external digital modulation signal of video signal;
One minimum differential wave (TMDS) receiver is connected in this digital visual interface connector and this basic computer, in order to should external digital modulation signal of video signal or this internal digital modulation signal of video signal is reduced into a digital image data; And
One Low Voltage Differential Signal forwarder is connected in this minimum differential signal receiver, in order to be exported behind the digital modulation image data that this digital image data is converted to a Low Voltage Differential Signal (LVDS) form.
10. as 8 described portable computers of claim the, the receiver that it is characterized in that this display is minimum differential wave (TMDS) receiver, and this signal converting assembly comprises:
One digital visual interface (DVI) connector is connected in this signal path output, in order to receive this external digital modulation signal of video signal; And
One minimum differential wave (TMDS) forwarder is connected in this digital visual interface connector and this basic computer, in order to directly should external digital modulation signal of video signal or the output of this internal digital modulation signal of video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021219087A CN100421098C (en) | 2002-05-27 | 2002-05-27 | Portable computer able to display external image signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021219087A CN100421098C (en) | 2002-05-27 | 2002-05-27 | Portable computer able to display external image signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1387132A CN1387132A (en) | 2002-12-25 |
| CN100421098C true CN100421098C (en) | 2008-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021219087A Expired - Lifetime CN100421098C (en) | 2002-05-27 | 2002-05-27 | Portable computer able to display external image signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100421098C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2312478Y (en) * | 1997-08-08 | 1999-03-31 | 英业达股份有限公司 | Notebook like computer having attached liquid crystal displaying modular piece |
| CN2363446Y (en) * | 1998-12-10 | 2000-02-09 | 上海凌志计算机系统工程有限责任公司 | Top box for television set with digital bidirectional video ordering system and PC function |
-
2002
- 2002-05-27 CN CNB021219087A patent/CN100421098C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2312478Y (en) * | 1997-08-08 | 1999-03-31 | 英业达股份有限公司 | Notebook like computer having attached liquid crystal displaying modular piece |
| CN2363446Y (en) * | 1998-12-10 | 2000-02-09 | 上海凌志计算机系统工程有限责任公司 | Top box for television set with digital bidirectional video ordering system and PC function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1387132A (en) | 2002-12-25 |
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Granted publication date: 20080924 |