CN105808481A - Apparatus for transmitting SCART and HDMI signals by multiplexing HDMI interface - Google Patents
Apparatus for transmitting SCART and HDMI signals by multiplexing HDMI interface Download PDFInfo
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- CN105808481A CN105808481A CN201610121298.0A CN201610121298A CN105808481A CN 105808481 A CN105808481 A CN 105808481A CN 201610121298 A CN201610121298 A CN 201610121298A CN 105808481 A CN105808481 A CN 105808481A
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- hdmi
- signal
- scart
- inductance
- switching circuit
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Semiconductor Integrated Circuits (AREA)
- Information Transfer Systems (AREA)
Abstract
The present invention discloses an apparatus for transmitting SCART and HDMI signals by multiplexing an HDMI interface. The apparatus comprises a signal switching circuit, wherein the signal switching circuit is arranged between a processor and an HDMI interface; the HDMI interface is connected to an SCART signal generating device and an HDMI signal generating device separately via connecting lines; the processor detects high and low electrical levels generated according to two input signals at an electrical level region, so as to enable the signal switching circuit to switch an HDMI signal and an SCART signal to a corresponding signal input interface of the processor. The apparatus disclosed by the present invention enables electric products to be lighter and thinner in the case that transmission of SCART and HDMI signals is achieved.
Description
Technical field
The present invention relates to the electronic device field supporting the decoding of HDMI, SCART signal, be specifically related to the device of a kind of HDMI multiplexing transmission SCART and HDMI signal.
Background technology
Lightening along with electronic product, some terminal interface is oversize, such as the product SCART interface towards Europe is standard configuration terminal, and its size is bigger than normal, the design of structure and terminal is had higher requirement by this, there is provided herein a kind of design using HDMI replacement SCART interface to realize the transmission of normal SCART signal and solve this difficult problem, and this HDMI also can transmit normal HDMI signal.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, it is provided that the device of a kind of HDMI multiplexing transmission SCART and HDMI signal, the technical problem oversize for solving the existing electronic equipment supporting that HDMI, SCART signal decodes.
Consider the problems referred to above of prior art, according to an aspect disclosed by the invention, the present invention by the following technical solutions:
A kind of device of HDMI multiplexing transmission SCART and HDMI signal, it includes signal switching circuit, described signal switching circuit is arranged between processor and HDMI, described HDMI is connected with SCART signal generating apparatus and HDMI signal generating apparatus respectively by connecting line, described processor detection level district inputs, according to two kinds, the low and high level that signal produces, and makes described signal switching circuit that HDMI signal and SCART signal are switched to the corresponding signal input interface of described processor.
In order to realize the present invention better, further technical scheme is:
According to one embodiment of the invention, the connecting line that it is connected with SCART signal generating apparatus adopts SCART to change the wire rod that the line sequence transformational rule of HDMI makes.
The present invention it may also is that
According to another embodiment of the invention, described processor detection level district includes a level sensitive circuit, described level sensitive circuit includes inductance L1, inductance L2, inductance L3 and audion, described audion is NPN type, described inductance L3 one end is connected with described transistor base, described transistor emitter ground connection, described transistor collector is connected with described inductance L2 one end, described inductance L1 one end is connected with the described inductance L3 other end, and the described inductance L1 other end is connected with the described inductance L2 other end.
Compared with prior art, one of beneficial effects of the present invention is:
A kind of HDMI multiplexing transmission SCART of the present invention and the device of HDMI signal, improve the durability of terminal, such that it is able to reduce board size, as current Europe electronic product can be changed because of the present situation of the SCART big and lightening difficulty of interface size by technical scheme.
Accompanying drawing explanation
For clearer explanation present specification embodiment or technical scheme of the prior art, below the accompanying drawing used required in the description to embodiment or prior art is briefly described, apparently, the accompanying drawing that the following describes is only to the reference of some embodiments in present specification, for those skilled in the art, when not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 illustrates the device schematic diagram of HDMI multiplexing transmission SCART and HDMI signal according to an embodiment of the invention.
Fig. 2 illustrates that line position represents intention according to an embodiment of the invention.
Fig. 3 illustrates level detection conspectus according to an embodiment of the invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
As shown in Figure 1, a kind of device of HDMI multiplexing transmission SCART and HDMI signal, it includes signal switching circuit, described signal switching circuit is arranged between processor and HDMI, described HDMI is connected with SCART signal generating apparatus and HDMI signal generating apparatus respectively by connecting line, described processor detection level district inputs, according to two kinds, the low and high level that signal produces, and makes described signal switching circuit that HDMI signal and SCART signal are switched to the corresponding signal input interface of described processor.
The present invention can save SCART interface, the multiplex interface transmission of HDMI, SCART signal is realized by HDMI, realize the intelligence switching of HDMI signal and SCART signal by detecting level including control circuit, and HDMI turns the Special-purpose connecting line of SCART, the transmission of SCART signal can be realized.
For in the design of connecting line, define SCART and change the rule of HDMI, as shown in Figure 2, can be seen that from the definition of FullSCART pin, Pin10 and Pin12 is NC, therefore just residue 19 pins and HDMI pin can one_to_one corresponding, the rule of correspondence adopt to over the ground, the holding wire rule to holding wire.
As shown in Figure 3, processor detection level district includes a level sensitive circuit, described level sensitive circuit includes inductance L1, inductance L2, inductance L3 and audion, described audion is NPN type, described inductance L3 one end is connected with described transistor base, described transistor emitter ground connection, and described transistor collector is connected with described inductance L2 one end, described inductance L1 one end is connected with the described inductance L3 other end, and the described inductance L1 other end is connected with the described inductance L2 other end.
Shown in Fig. 3, based on the diversity of HDMI signal and SCART signal, detecting level separation two kinds input signal by master chip GPIO mouth, software detection present channel coordinates signal switching circuit to determine the input of signal:
1) when HDMI input be HDMI signal time, P19 (HDMI2-HPD, i.e. hotplug foot) is driven high, then CPU end (HDMIB_HP) detects this level；
2) when HDMI input be SCART signal time, P19 is low level state；
3) whether CPU is driven high according to the level of HDMIB_HP foot that what determine input is HDMI or SCART signal, when being judged as HDMI signal, all HDMI are inputted the HDMI signaling interface of signal input CPU, otherwise signal is switched to the SCART signaling interface of CUP.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, identical similar portion cross-reference between each embodiment.
" embodiment ", " another embodiment ", " embodiment " spoken of in this manual, etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and include at least one embodiment that the application generality describes.Multiple local appearance statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, it is understood that when describing a specific features, structure or feature in conjunction with any embodiment, what advocate is also fall within the scope of the present invention to realize this feature, structure or feature in conjunction with other embodiments.
Although reference be made herein to invention has been described for the multiple explanatory embodiment of the present invention, but, it should be understood that those skilled in the art can be designed that a lot of other amendments and embodiment, these amendments and embodiment will drop within spirit disclosed in the present application and spirit.More specifically, in disclosure and scope of the claims, it is possible to building block and/or layout to theme composite configuration carry out multiple modification and improvement.Except the modification that building block and/or layout are carried out and improvement, to those skilled in the art, other purposes also will be apparent from.
Claims (3)
1. the device of a HDMI multiplexing transmission SCART and HDMI signal, it is characterized in that it includes signal switching circuit, described signal switching circuit is arranged between processor and HDMI, described HDMI is connected with SCART signal generating apparatus and HDMI signal generating apparatus respectively by connecting line, described processor detection level district inputs, according to two kinds, the low and high level that signal produces, and makes described signal switching circuit that HDMI signal and SCART signal are switched to the corresponding signal input interface of described processor.
2. the device of HDMI multiplexing transmission SCART according to claim 1 and HDMI signal, it is characterised in that the connecting line being connected with SCART signal generating apparatus adopts SCART to change the wire rod that the line sequence transformational rule of HDMI makes.
3. the device of HDMI multiplexing transmission SCART according to claim 1 and HDMI signal, it is characterized in that described processor detection level district includes a level sensitive circuit, described level sensitive circuit includes inductance L1, inductance L2, inductance L3 and audion, described audion is NPN type, described inductance L3 one end is connected with described transistor base, described transistor emitter ground connection, described transistor collector is connected with described inductance L2 one end, described inductance L1 one end is connected with the described inductance L3 other end, the described inductance L1 other end is connected with the described inductance L2 other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121298.0A CN105808481B (en) | 2016-03-03 | 2016-03-03 | The device of HDMI interface multiplexing transmission SCART and HDMI signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121298.0A CN105808481B (en) | 2016-03-03 | 2016-03-03 | The device of HDMI interface multiplexing transmission SCART and HDMI signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105808481A true CN105808481A (en) | 2016-07-27 |
| CN105808481B CN105808481B (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610121298.0A Active CN105808481B (en) | 2016-03-03 | 2016-03-03 | The device of HDMI interface multiplexing transmission SCART and HDMI signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803792A (en) * | 2017-01-06 | 2017-06-06 | 深圳创维－Rgb电子有限公司 | Data transfer equipment, electric equipment and electric equipment fault diagnosis system |
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| CN101160960A (en) * | 2005-04-15 | 2008-04-09 | 汤姆森许可贸易公司 | High-definition and single-definition digital television decoder |
| JP2009188727A (en) * | 2008-02-06 | 2009-08-20 | Sharp Corp | Display device |
| US20100095342A1 (en) * | 2008-08-06 | 2010-04-15 | Belkin International, Inc. | Wireless content transmission and control |
| US20120036548A1 (en) * | 2010-08-05 | 2012-02-09 | Xavier Guitton | Method for handling of audio/video signals and corresponding device |
| CN103024435A (en) * | 2012-12-21 | 2013-04-03 | 深圳Tcl新技术有限公司 | HDMI (high-definition multimedia interface) interface detection device and method and HDMI interface system |
| CN202918408U (en) * | 2012-11-30 | 2013-05-01 | 青岛海信电器股份有限公司 | A signal converting device and a displaying device using the same |
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2016
- 2016-03-03 CN CN201610121298.0A patent/CN105808481B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1894963A (en) * | 2003-12-17 | 2007-01-10 | 皇家飞利浦电子股份有限公司 | Automated signal selection |
| CN101160960A (en) * | 2005-04-15 | 2008-04-09 | 汤姆森许可贸易公司 | High-definition and single-definition digital television decoder |
| JP2009188727A (en) * | 2008-02-06 | 2009-08-20 | Sharp Corp | Display device |
| US20100095342A1 (en) * | 2008-08-06 | 2010-04-15 | Belkin International, Inc. | Wireless content transmission and control |
| US20120036548A1 (en) * | 2010-08-05 | 2012-02-09 | Xavier Guitton | Method for handling of audio/video signals and corresponding device |
| CN202918408U (en) * | 2012-11-30 | 2013-05-01 | 青岛海信电器股份有限公司 | A signal converting device and a displaying device using the same |
| CN103024435A (en) * | 2012-12-21 | 2013-04-03 | 深圳Tcl新技术有限公司 | HDMI (high-definition multimedia interface) interface detection device and method and HDMI interface system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106803792A (en) * | 2017-01-06 | 2017-06-06 | 深圳创维－Rgb电子有限公司 | Data transfer equipment, electric equipment and electric equipment fault diagnosis system |
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| Publication number | Publication date |
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| CN105808481B (en) | 2018-08-14 |
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