CN1315036C - Portable equipment video switching equipment and switching method thereof - Google Patents
Portable equipment video switching equipment and switching method thereof Download PDFInfo
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Abstract
The present invention discloses a video transfer device for portable devices. The present invention comprises an external connection video detection unit, a video signal converting unit and a video output unit, wherein the external connection video detection unit and the video signal converting unit are respectively connected with the video output unit, the external connection video detection unit is used for detecting whether a portable device is connected with a large screen display device or not, the converting unit receives a data flow from the portable device, and the data flow is output to the video output unit after being converted and is output to the large screen display device. The video transfer device and a transfer method for portable devices provided by the present invention realizes the connection of portable devices, such as portable computers, MP3s, MDs, PDAs, etc., and large screen display devices which support VGA and AV, such as televisions, projectors, etc., and large screen display can be carried out. The present invention realizes the monitoring function of external connection devices by the external connection video detection unit, and energy consumption is lowered maximally. Portable devices can be controlled more conveniently by universal remote control boards, such as compatible universal televisions, DVD players, etc.
Description
Technical Field
The invention relates to a video switching device and a video switching method of portable equipment, in particular to a switching device and a switching method which have a monitoring function and are used for switching videos of portable equipment such as a portable computer and the like and a large-screen display device such as a television and the like. Belongs to the field of computers and external equipment thereof.
Background
With the wide application of digital technology and the emergence of large-capacity and small-volume storage devices, more and more functions are integrated into portable devices such as personal computers. Mass data and data including multimedia are stored and checked by portable equipment such as a portable computer.
These portable devices such as personal computers have a small display screen for convenience of carrying. In actual use, especially when playing videos and viewing image files, the effect is not as good as that of a large-screen display device. Particularly, in some cases, it is necessary to display to the public, for example, when video files such as videos and animations in a computer are played and image files such as flowcharts and effect diagrams stored in the computer are viewed, the display screen is too small to be performed. However, although the large-screen display devices such as televisions are easily available, the portable devices of the personal computers and the large-screen display devices such as televisions cannot be conveniently connected, and the purpose of large-screen display cannot be achieved.
Disclosure of Invention
Aiming at the requirements, the problem of convenient connection between portable equipment such as a personal computer and the like and large-screen display devices such as a television and the like is solved, the invention provides a video switching device of the portable equipment, which can conveniently connect the portable equipment such as the personal computer, a PDA and the like with the large-screen display devices such as the television, a projector and the like to display on a large screen; the video switching device of the portable equipment also adopts monitoring measures to reduce energy consumption; in order to facilitate control, the function compatible with a universal remote control board such as a universal television, a video disc player and the like is added.
In order to better achieve the purpose of the invention, the invention also provides a switching method of the portable equipment and the large-screen display device.
The purpose of the invention is realized by the technical scheme as follows.
A video switching apparatus of a portable device, comprising: the device comprises an external video detection unit, a video signal conversion unit and a video output unit;
the external video detection unit is connected with the video output unit, the information of whether the large-screen display equipment exists or not is acquired through an output interface of the video output unit, which is used for connecting a large-screen display device, and the video signal conversion unit is connected with the video output unit and sends the converted data stream to the video output unit;
the external video unit is provided with an interface connected to the portable equipment and used for sending information whether the large-screen display device exists or not to the portable equipment;
the video signal conversion unit is provided with a command interface connected to the portable device for receiving various control commands from the portable device and a video interface connected to the portable device for receiving a data stream to be played from the portable device.
In the video switching device of the portable device, the external video detection unit at least comprises a voltage comparison chip, one input end of the voltage comparison chip is connected with the output interface of the video output unit, the other input end of the voltage comparison chip is connected with the standard voltage of the input end, and the voltage of the video output interface is compared with the standard voltage through the voltage comparison chip to judge whether the large-screen display device is connected or not; the output of the voltage comparison chip is connected to the portable device.
In the video switching device of the portable device, the external video detection unit includes an electric control switch, the electric control switch is connected in series between the external video detection unit and the video output unit to control the connection between the external video detection unit and the video output unit, and a control end of the electric control switch is connected with the portable device.
In the video switching apparatus of the portable device, the video signal conversion unit includes a video signal conversion chip, and a video input end of the video signal conversion chip is connected to a video output end of the portable device; and the control end of the video signal conversion chip is connected with the portable equipment.
The video switching device of the portable device comprises a video output unit and a control unit, wherein the video output unit at least comprises an impedance matching circuit and a filter circuit, and a data stream input from the video signal conversion unit passes through the impedance matching circuit and the filter circuit in sequence and is output to an interface of a large-screen display device;
the video switching device of the portable equipment further comprises an infrared receiving unit, wherein the infrared receiving unit comprises an infrared decoding chip and an infrared signal receiver; the infrared signal receiver receives an infrared signal sent by the remote controller, converts the infrared signal into an electric signal and sends the electric signal to the infrared decoding chip, and the infrared decoding chip decodes the received signal and sends the decoded signal to the portable equipment.
The disconnection or connection of the device and the external display equipment can cause the resistance change of the port of the video output unit, thereby causing the total resistance change of the detection loop, and the voltage of the detection loop maintains constant value, so the voltage of the port of the video output unit also has corresponding change. The external detection unit determines the connection and disconnection of the external display device by comparing the voltage of the video output unit port with the standard voltage.
The video signal conversion unit is in a 'dormant' state that the video signal conversion unit is in a state that most functional units are closed and the clock frequency is reduced;
when the external video detection unit detects that the large-screen display device is connected, the external video detection unit sends connection information to the portable equipment, and after the portable equipment receives the information, the electronic control switch of the external video detection unit is firstly closed, so that the detection of the external video detection unit on the large-screen display device is closed; then sending a power-on 'wake-up' command to the video signal conversion unit through the command interface, and transmitting parameter setting information; powering up the video signal conversion unit and setting parameters according to the received parameters; the video signal conversion unit automatically receives data stream from the portable device, converts the data stream and outputs the converted data stream according to a specified format, sends the converted data stream to the video output unit, and outputs the converted data stream to the large-screen display device for display after impedance matching and filtering by the video output unit. During the display process, the video signal conversion unit can also receive a control command from the portable device to complete the video control function.
When the video signal conversion unit receives a 'sleep' command from the portable equipment or detects that the large-screen display device is disconnected, the video signal conversion unit is automatically powered off and enters a 'sleep' state. Meanwhile, the portable equipment opens an electric control switch of the external video detection unit, so that the external video detection unit enters a working state and monitors the connection state of the external video.
The infrared receiving unit receives information sent by the remote controller from the infrared receiving interface, the information is converted and then sent to the portable equipment, and the portable equipment responds to a command sent by the remote controller; the portable device issues a command to cause the video conversion unit to perform a power-on output or enter a "sleep" function.
A video switching method of a portable device comprises the following steps:
step 2, the portable equipment controls the video signal conversion unit to output the converted signal to the video output unit;
and 3, the video output unit processes the signals and outputs the signals to a large-screen display device for display.
As described above, in the video forwarding method for portable device, the specific working process of the external detection unit in step 1 includes:
step 1.1, an external detection unit detects the interface voltage of a video output unit connected with a large-screen display device;
step 1.2 is compared with a preset standard voltage through a voltage comparison chip,
step 1.3, when the voltage of the video output interface is smaller than the standard voltage, sending the connection information to the portable equipment;
step 1.4, when the voltage of the video output interface is greater than or equal to the standard voltage, continuing to execute step 1.1.
The disconnection or connection of the device and the external display equipment can cause the resistance change of the port of the video output unit, thereby causing the total resistance change of the detection loop, and the voltage of the detection loop maintains constant value, so the voltage of the port of the video output unit also has corresponding change. By the principle, the detection of the external large-screen display device is realized.
As described above, the video forwarding method of the portable device further includes step 1.5 after step 1.4 in step 1: the portable device closes the external video detection unit.
As mentioned above, in the video forwarding method of the portable device, the specific working process of the video signal conversion unit in step 2 includes:
step 2.1, the portable device sends a power-on work 'awakening' command and parameter setting information to the video signal conversion unit;
step 2.2, powering up the video signal conversion unit, and setting parameters according to the received parameters;
and 2.3, the video signal conversion unit automatically receives the data stream from the portable equipment, converts the data stream and outputs the converted data stream to the video output unit according to a specified format.
As described above, in the video forwarding method of the portable device, in step 2, step 2.3: the video signal conversion unit receives a control command from the portable device in the process of converting the data stream, and completes the video format conversion.
As described above, in the video forwarding method of the portable device, the specific working process of the video output unit in step 3 includes:
step 3.1, the video output unit performs impedance matching on the converted video signal;
step 3.2, the video output unit filters the signals after impedance matching;
and 3.3, outputting the signals subjected to impedance matching and filtering to a connected large-screen display device by the video output unit for displaying.
In the video forwarding method of the portable device, in the step 3, the step 3.1 video output unit performs impedance matching, and the matching impedance is usually 75 ohms.
As described above, the video forwarding method of the portable device further includes step 4 after step 3, specifically as follows:
step 4.1, the video signal conversion unit receives a 'sleep' command from the portable equipment, or detects that the large screen display device is disconnected, and executes step 4.2, otherwise, continues to execute step 1;
step 4.2, the video signal conversion unit is automatically powered off and enters a 'dormant' state; step 1 is performed.
Reference to "sleep" refers to a state in which most of the functional units (units involved in video conversion: e.g., DACs) are turned off while the clock frequency is reduced.
As described above, the video switching method of the portable device further includes, between step 1 and step 2, that the portable device closes the external video detection unit, and after step 4, the method further includes step 5: the portable equipment opens the external video detection unit, so that the external video detection unit enters a working state and monitors the connection state of the external video.
As described above, the video forwarding method of the portable device further includes, before step 1, step a: the infrared receiving unit receives a starting-up command sent by the remote controller, decodes the starting-up command and sends the decoded starting-up command to the portable equipment; after receiving the signal, the portable device is automatically started up and outputs a video data stream.
As described above, before step 4, step 3 further includes step B: the infrared receiving unit receives a 'sleep' command sent by the remote controller, decodes the command and sends the decoded command to the portable equipment; after receiving the signal, the portable device sends a 'sleep' bus command to the video conversion unit.
The video switching device and the switching method of the portable equipment provided by the invention realize the connection of the portable equipment such as a personal computer, MP3, MD and PDA and the like with large-screen display devices supporting VGA and AV such as a television, a projector and the like to display on a large screen; the same device and method can be used to connect the portable device with various audio devices to play sound. The invention realizes the monitoring function of the external equipment by externally connecting the video detection unit, and reduces the energy consumption to the maximum extent; the control is more convenient by being compatible with universal remote control boards such as a television, a video disc player and the like.
The video switching device of the portable equipment can be arranged in the portable equipment, can also be arranged outside the portable equipment to be used as plug-and-play equipment of the portable equipment, and has small volume and convenient carrying.
Drawings
Fig. 1 is a schematic block diagram of embodiment 1 of the present invention.
Fig. 2 is a circuit diagram of an external video detection unit, a video signal conversion unit and a video output unit in embodiment 1 of the present invention.
Fig. 3 is a circuit diagram of an infrared receiving unit of embodiment 1 of the present invention.
Fig. 4 is a flowchart of embodiment 2 of the present invention.
Fig. 5 is a flowchart illustrating the operation of the external connection detection unit according to the embodiment of the present invention.
Fig. 6 is a flow chart of the operation of the video conversion unit according to the embodiment of the present invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and embodiments.
Example 1 (apparatus):
fig. 1 shows a schematic block diagram of the circuit of the device of the present embodiment, and fig. 2 shows a specific circuit diagram. As can be seen from fig. 1 and 2, the present embodiment includes: the device comprises an external video detection unit, a video signal conversion unit and a video output unit;
as shown in the upper right of fig. 2, the external VIDEO detection unit includes two S-809 voltage comparison chips, which are respectively used to compare the S-VIDEO and AV port voltages of the VIDEO output unit with the standard voltage, and determine the connection and disconnection of the external large-screen display device. This is because the disconnection or connection of the device to the external display device will cause the resistance of the video output unit port to change, which will cause the total resistance of the detection loop to change, and the voltage of the detection loop remains constant, so the voltage of the video output unit port will change accordingly.
The VPWR _ EN in the upper right block of the external video detection unit FIG. 2 is connected with the portable device, and when the VPWR _ EN is at a low level, the electric control switch is closed to form an open circuit; when VPWR _ EN is at a high level, the electric control switch is turned on to form a passage, and the external video detection unit can effectively detect the connection state of the video output unit and the external display equipment. Therefore, the opening and closing of the external video detection unit can be controlled.
The external video detection unit is connected with the video output unit through a P _ CVBS and a P _ C in the upper right block of FIG. 2 to acquire information whether the external device exists, and the external video detection unit further comprises an INT _ V interface connected to the portable device to send the information whether the external device exists to the portable device.
As shown in the left part of fig. 2, the video signal conversion unit selects a CH7013A chip to complete the conversion of the video signal. The CVBS pin and the C pin of the video signal conversion chip are connected with the P _ CVBS pin and the P _ C pin of the video output unit, the converted data stream is sent to the video output unit, and the video signal conversion unit further comprises: a control command bus interface connected to the portable device, as shown in the lower left of fig. 2; for receiving various command signals from the portable device and a video signal bus interface connected to the portable device, as shown in the upper left of fig. 2, for receiving a data stream to be played from the portable device.
The VIDEO output unit comprises two external equipment interfaces, namely an S-VIDEO interface and an AV (PAL) interface, namely a COMPOSITE VIDEO interface in the lower right block of the figure 2, and is used for connecting a large-screen display device. In the lower right block of fig. 2, from left to right, there are an impedance matching circuit, a filter circuit and an output interface in this order.
When the external video detection unit detects that the large-screen display device is connected, the INT _ V of the external video detection unit is changed from low level to high level to be output, and after the portable equipment receives the information, the electronic control switch of the external video detection unit is closed through the VPWR _ EN, so that the detection function of the external video detection unit is closed; then sending a power-on work command to the video signal conversion chip CH7013A through a control command bus, and transmitting parameter setting information; powering up the video signal conversion chip and setting parameters according to the received parameters; the video signal conversion chip automatically receives data stream from the portable device through a video signal bus, converts the data stream and outputs the data stream according to a specified format, sends the converted signal to the video output unit, and outputs the signal to the large-screen display device for display after impedance matching and filtering by the video output unit. During the display process, the video signal conversion unit can also receive a control command from the portable device to complete the function of converting the video format.
During the working process of the video signal conversion unit, the portable device can actively send a 'sleep' command, and can also send the 'sleep' command after detecting that the large-screen display device is disconnected. The portable equipment reads the register which represents the connection state in the video conversion chip through the bus at regular time so as to detect the connection state of the external large-screen display device. When the portable device reads the value of 'no connection', a 'sleep' instruction is sent to the video conversion unit to enable the video conversion unit to enter a sleep state.
When the video signal conversion unit receives a 'sleep' command from the portable device, the video signal conversion unit is automatically powered off and enters a 'sleep' state. Meanwhile, the portable equipment opens an electric control switch of the external video detection unit, so that the external video detection unit enters a working state and monitors the connection state of the external video.
The infrared receiving unit comprises an infrared decoding chip and an infrared signal receiver; the infrared signal receiver receives an infrared signal sent by the remote controller, converts the infrared signal into an electric signal and sends the electric signal to the infrared decoding chip, and the infrared decoding chip decodes the received signal and sends the decoded signal to the portable equipment. As shown in fig. 3, the infrared receiving unit is selected from an IRDC370BM decoding chip. The instruction of the infrared remote control panel is introduced through a P _ RXIN pin, the infrared remote control panel is decoded by the unit and is sent to the portable equipment by the P _ IROUT and the P _ PWRCRL, and the portable equipment completes the specified function of starting up or 'sleeping' according to the received instruction.
Example 2 (method):
as shown in fig. 4, the present embodiment includes the following steps:
and step A, the portable equipment is started after receiving the starting command of the infrared receiving unit, the portable equipment works normally, and the video data stream is output. At this time, the video signal conversion unit is in a "sleep" state in which the video signal conversion unit is in a state in which most of the functional units (units related to video conversion: such as DAC) are turned off while the clock frequency is reduced;
step 2, with reference to fig. 6, the portable device sends a power-on "wake-up" command and parameter setting information to the video signal conversion unit; powering up the video signal conversion unit and setting parameters according to the received parameters; the video signal conversion unit automatically receives data stream from the portable device through a video signal bus, converts the data stream according to a specified format and outputs the converted data stream to the video output unit; in the display process, the video signal conversion unit receives a control command from the portable device through the control command bus, and if a 'sleep' command is received, the step 5 is carried out; if a format conversion command is received, adjusting the output format of the video according to the command;
step 3, the video output unit performs impedance matching and filtering processing on the signals, wherein the filtering is mainly used for reducing the influence of noise on the output video signals and then outputting the signals to a large-screen display device for display;
step 4, the portable equipment receives a command that the infrared receiving unit enables the video signal conversion unit to enter the 'sleep' state, and forwards the command to the video signal conversion unit, and the video signal conversion unit is powered off and enters the 'sleep' state;
step 5, if the video signal conversion unit detects that the large-screen display device is disconnected, the video signal conversion unit is automatically powered off and enters a 'dormant' state;
and 6, opening an electric control switch of the external video detection unit by the portable equipment, enabling the external video detection unit to enter a working state, and monitoring the connection state of the external video.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.
Claims (17)
1. A video switching device of a portable device, characterized in that: the method comprises the following steps: the device comprises an external video detection unit, a video signal conversion unit and a video output unit; wherein,
the external video detection unit is connected with the video output unit, and the information of whether the large-screen display equipment exists or not is acquired through an output interface of the video output unit, which is used for connecting the large-screen display device; the video signal conversion unit is connected with the video output unit and sends the converted data stream to the video output unit;
the external video detection unit is provided with an interface connected to the portable equipment and used for sending information whether the large screen display device exists or not to the portable equipment;
the video signal conversion unit is provided with a control command interface and a video interface which are connected to the portable equipment; the control command interface is used for receiving various control commands from the portable equipment; the video interface is used for receiving a data stream to be converted from the portable device;
the external video detection unit at least comprises a voltage comparison chip, one input end of the voltage comparison chip is connected with an output interface of the video output unit, the other input end of the voltage comparison chip is connected with a standard voltage, the voltage comparison chip is used for comparing whether the voltage of the video output interface is smaller than the standard voltage or not, and judging whether a large-screen display device is connected or not; the output of the voltage comparison chip is connected to the portable device.
2. The video switching apparatus of portable device according to claim 1, wherein: the external video detection unit comprises an electric control switch, the electric control switch is connected in series between the external video detection unit and the video output unit and controls the connection of the external video detection unit and the video output unit, and the control end of the electric control switch is connected with the portable equipment.
3. The video switching apparatus of portable device according to claim 1, wherein: the video signal conversion unit comprises a video signal conversion chip, and a video input end of the video signal conversion chip is connected with a video output end of the portable equipment and is used for receiving a data stream to be converted; the control end of the video signal conversion chip is connected with the portable equipment and is used for receiving a control command sent by the portable equipment.
4. The video switching apparatus of portable device according to claim 1, wherein: the video output unit at least comprises an impedance matching circuit and a filter circuit, and the data stream input from the video signal conversion unit passes through the impedance matching circuit and the filter circuit in sequence and is output to the interface of the large-screen display device.
5. The video switching apparatus of portable device according to claim 4, wherein: the optimal impedance matching value of the video output unit is 75 ohms.
6. The video switching apparatus of portable device according to claim 1, wherein: the video signal output by the video output unit comprises: and two outputs of S-Video and AV.
7. The video switching apparatus of portable device according to claim 1, wherein: the infrared receiving unit comprises an infrared decoding chip and an infrared signal receiver; the infrared signal receiver receives an infrared signal sent by the remote controller, converts the infrared signal into an electric signal and sends the electric signal to the infrared decoding chip, and the infrared decoding chip decodes the received signal and sends the decoded signal to the portable equipment.
8. A video switching method of a portable device, characterized in that: video switching in any one of the devices of claims 1-7, comprising the steps of:
the method comprises the following steps that firstly, an external video detection unit continuously detects whether a large-screen display device is connected; when external video detection unit detects that there is the large screen display device to connect, send connection information to portable equipment, specific working process includes:
step 1.1, an external detection unit detects the interface voltage of a video output unit connected with a large-screen display device;
step 1.2, comparing the voltage with a preset standard voltage through a voltage comparison chip;
step 1.3, when the voltage of the video output interface is smaller than the standard voltage, sending the connection information to the portable equipment, and then executing the step two; when the voltage of the video output interface is greater than or equal to the standard voltage, continuing to execute the step 1.1;
step two, the portable equipment controls the video signal conversion unit to output the converted signal to the video output unit;
and step three, the video output unit processes the signals and outputs the signals to a large-screen display device for display.
9. The video relay method of the portable device according to claim 8, wherein: step 1.4 is also included after step 1.3 in the first step, namely the portable device turns off the external video detection unit.
10. The video relay method of the portable device according to claim 8, wherein: the specific working process of the video signal conversion unit in the second step comprises:
step 2.1, the portable device sends a power-on work 'awakening' command and parameter setting information to the video signal conversion unit;
step 2.2, powering up the video signal conversion unit, and setting parameters according to the received parameters;
and 2.3, the video signal conversion unit automatically receives the data stream from the portable equipment, converts the data stream according to a specified format and outputs the converted data stream to the video output unit.
11. The video relay method of the portable device according to claim 10, wherein: in step 2.3 in the second step, in the process of converting the data stream, the video signal conversion unit receives the control command from the portable device to complete the video format conversion.
12. The video relay method of the portable device according to claim 8, wherein: the specific working process of the video output unit in the third step comprises the following steps:
step 3.1, the video output unit performs impedance matching on the converted video signal;
step 3.2, the video output unit filters the signals after impedance matching;
and 3.3, the video output unit outputs the signals subjected to impedance matching and filtering to a connected large-screen display device for display.
13. The video relay method of the portable device according to claim 12, wherein: in the third step, the video output unit in the step 3.1 performs impedance matching, and the optimal value of the matched impedance is 75 ohms.
14. The video relay method of the portable device according to claim 8, wherein: the third step is followed by a fourth step, which is specifically as follows:
step 4.1, the video signal conversion unit receives a 'sleep' command from the portable equipment, or detects that the large screen display device is disconnected, and executes step 4.2; otherwise, continuing to execute the step one;
and 4.2, automatically powering off the video signal conversion unit, entering a dormant state, and executing the step one.
15. The video relay method of the portable device according to claim 14, wherein: and step five is included between the step one and the step two, the portable equipment closes the external video detection unit, and the portable equipment opens the external video detection unit to enable the external video detection unit to enter a working state and monitor the connection state of the external video.
16. The video relay method of the portable device according to claim 8, wherein: the first step also comprises the following steps: the infrared receiving unit receives a starting-up command sent by the remote controller, decodes the starting-up command and sends the decoded starting-up command to the portable equipment; after receiving the signal, the portable device is automatically started up and outputs a video data stream.
17. The video relay method of the portable device according to claim 14, wherein: before the fourth step, after the third step, the method also comprises a step B: the infrared receiving unit receives a 'sleep' command sent by the remote controller, decodes the command and sends the decoded command to the portable equipment; after receiving the signal, the portable device sends a 'sleep' bus command to the video conversion unit.
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| CNB2004100429403A CN1315036C (en) | 2004-06-01 | 2004-06-01 | Portable equipment video switching equipment and switching method thereof |
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| CNB2004100429403A CN1315036C (en) | 2004-06-01 | 2004-06-01 | Portable equipment video switching equipment and switching method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8427392B2 (en) | 2009-03-31 | 2013-04-23 | Asustek Computer Inc. | Circuit for detecting an external display device adapted to notebook computer and detecting method thereof |
Families Citing this family (6)
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| CN100490516C (en) * | 2006-01-16 | 2009-05-20 | 深圳创维－Rgb电子有限公司 | Ditial light display rear projection VGA extension circuit |
| CN101064811B (en) * | 2006-04-26 | 2010-05-12 | 明基电通股份有限公司 | Electronic device and method for communicating with external connection module |
| CN101458942B (en) | 2007-12-14 | 2012-07-18 | 鸿富锦精密工业（深圳）有限公司 | Audio video device and controlling method |
| CN102385499A (en) * | 2010-09-03 | 2012-03-21 | 上海信颐信息技术有限公司 | Signal transmission device and combination system of ultra mobile personnel computer and computer monitor |
| TWM508813U (en) * | 2015-06-30 | 2015-09-11 | Aten Int Co Ltd | Signal-transmitted device for energy conservation and a system thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0710017A2 (en) * | 1994-10-28 | 1996-05-01 | Plessey Semiconductors Limited | Television receiver with an interface for the displaying and communication of data |
| US5748238A (en) * | 1992-03-12 | 1998-05-05 | Hitachi, Ltd. | Video camera |
| EP1059809A2 (en) * | 1999-06-07 | 2000-12-13 | Nokia Corporation | Adaptator for data transfer between a mobile device and a television and method therefore |
| CN1300981A (en) * | 1999-12-22 | 2001-06-27 | 中国科学院电子学研究所 | Microcomputer controlled digital monitor system and method |
| WO2002043389A1 (en) * | 2000-11-27 | 2002-05-30 | Lasse Halttunen | Method of transferring data of screen and voice of mobile phone to a normal analog television receiver with an adapter |
| CN1421763A (en) * | 2001-11-29 | 2003-06-04 | 英业达股份有限公司 | Computer I/O port unit for inserting monitor or TV set |
| CN2565082Y (en) * | 2002-07-05 | 2003-08-06 | 赖俊鹏 | Portable digital picture and sound player |
-
2004
- 2004-06-01 CN CNB2004100429403A patent/CN1315036C/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5748238A (en) * | 1992-03-12 | 1998-05-05 | Hitachi, Ltd. | Video camera |
| EP0710017A2 (en) * | 1994-10-28 | 1996-05-01 | Plessey Semiconductors Limited | Television receiver with an interface for the displaying and communication of data |
| EP1059809A2 (en) * | 1999-06-07 | 2000-12-13 | Nokia Corporation | Adaptator for data transfer between a mobile device and a television and method therefore |
| CN1300981A (en) * | 1999-12-22 | 2001-06-27 | 中国科学院电子学研究所 | Microcomputer controlled digital monitor system and method |
| WO2002043389A1 (en) * | 2000-11-27 | 2002-05-30 | Lasse Halttunen | Method of transferring data of screen and voice of mobile phone to a normal analog television receiver with an adapter |
| CN1421763A (en) * | 2001-11-29 | 2003-06-04 | 英业达股份有限公司 | Computer I/O port unit for inserting monitor or TV set |
| CN2565082Y (en) * | 2002-07-05 | 2003-08-06 | 赖俊鹏 | Portable digital picture and sound player |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8427392B2 (en) | 2009-03-31 | 2013-04-23 | Asustek Computer Inc. | Circuit for detecting an external display device adapted to notebook computer and detecting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1704896A (en) | 2005-12-07 |
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