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Video device and connection determination method

A video device, connected to the technology, applied in the direction of television, instruments, electrical components, etc., can solve the problem of taking a certain amount of time

Active Publication Date: 2020-04-24
NEC DISPLAY SOLUTIONS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electronic device disclosed in Patent Document 1 suffers from a problem that it may take a certain amount of time due to the process of confirming communication contents when the presence / absence of an erroneous connection is detected

Method used

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  • Video device and connection determination method
  • Video device and connection determination method
  • Video device and connection determination method

Examples

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Embodiment Construction

[0033] Hereinafter, the present invention will be described through embodiments with reference to the accompanying drawings. figure 1 is a block diagram showing a configuration example of a video device according to one embodiment of the present invention. figure 1 Shown is a video device 100 comprising a detector 10, a scaler 20, a DP connector 30, a pull-down resistor 31, a switch 32, a DP connector 40, a pull-up resistor 41, a switch 42, a video playback section 50, a video display part 60 and power supply 70.

[0034] The detector 10 also includes a connection determination section 11 . For example, connection determination section 11 may be realized by an electronic circuit or hardware such as an electronic circuit, or by a combination of hardware such as a CPU (Central Processing Unit) and software (ie, program) executed by the CPU. The connection determination unit 11 has an input terminal 111 and an input terminal 112 . The input terminal 111 is connected to the sig...

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Abstract

A video device according to one embodiment comprises at least one of the following: an input connector to which a video signal cable that transmits a video signal is connected; and an output connectorto which the video signal cable is connected. The video device, if having the input connector, comprises a first resistor, and if having the output connector, comprises a third resistor. In a case ofthe input connecter being provided, a first signal line, which is one of a plurality of signal lines connected to the input connector, is connected via the first resistor to a second potential, different from a first potential, the first signal line being connected, if the input connector is properly connected to another video device via the video signal cable, to the first potential via a secondresistor included in the other video device and via a first switch that is closed when a main power source of the other video device is ON. In a case of the output connector being provided, a secondsignal line, which is one of a plurality of signal lines connected to the output connector, is connected via the third resistor to a fourth potential, different from a third potential, the second signal line being connected, if the output connector is properly connected to the other video device via the video signal cable, to the third potential via a fourth resistor included in the other video device and via a second switch that is closed when the main power source of the other video device is ON. The video device further comprises a connection determination unit that determines, on the basisof the potential of the first signal line or the potential of the second signal line, whether the video signal cable is properly connected.

Description

technical field [0001] The present invention relates to a video device and a connection determination method. Background technique [0002] According to DisplayPort (indicating Display Port) (that is, a trademark or registered trademark in the United States and other countries) (hereinafter referred to as DP), that is, a standard for splicing video signals, it is possible to daisy-chain connect multiple video equipment. So a single video device might have an input DP connector and an output DP connector. According to DP, the input DP connector and the output DP connector have the same shape. When connecting a plurality of video devices using a video signal cable (or DP cable), users may encounter a failure of connecting a video signal cable to a wrong DP connector by mistake. The user should properly use the video signal cable to connect the input DP connector to the output DP connector, however the user may cause a wrong connection, making it possible to connect the outp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/436G09F9/00
CPCG09F9/00H04N17/00H04N21/43632H04N21/4122H04N7/104
Inventor 山本展岳
Owner NEC DISPLAY SOLUTIONS LTD
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