CN115940322A - Switching circuit of timer device and electronic equipment - Google Patents
Switching circuit of timer device and electronic equipment Download PDFInfo
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- CN115940322A CN115940322A CN202211370284.4A CN202211370284A CN115940322A CN 115940322 A CN115940322 A CN 115940322A CN 202211370284 A CN202211370284 A CN 202211370284A CN 115940322 A CN115940322 A CN 115940322A
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- power supply
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- retimer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention provides a switching circuit of a Ret imer device and an electronic device, comprising: the circuit comprises a Ret imer device, an HDM I connector, a switch loop and a voltage division loop; the output end of the HDM I connector is electrically connected with the control end of the switch loop through the voltage division loop, the input end of the voltage division loop and the input end of the switch loop are used for connecting a power supply, the output end of the switch loop is electrically connected with the power supply end of the Ret imer device, the input end of the Ret imer device is used for connecting a graphic display output display unit, the output end of the Ret imer device is connected with the input end of the HDM I connector, and the output end of the HDM I connector is used for connecting HDM I display equipment; the voltage division loop is configured to enable the switch loop to be turned off when the HDM I display equipment is removed from the HDM I connector, so that the Ret imer device is disconnected with the power supply, and the problem that the existing Ret imer functional device is always in a power consumption state when the HDM I display equipment is not connected is solved.
Description
Technical Field
The invention relates to the field of electronic power, in particular to a switching circuit of a timer device and electronic equipment.
Background
Aiming at the HDMI display design of a multilink or the application scene of the design that overlong wiring on a PCB or an adapter plate is added or an HDMI authentication test is needed, a timer functional device or a level shift device (level shift) with a timer is generally needed to be added for signal correction, restoration and restoration, in the prior art, when no HDMI display device is accessed, the timer functional device or the level shift device (level shift) with the timer is still normally in normal power supply, and power consumption can be continuously consumed.
The above mentioned HDMI is used as a hot-pluggable display device, if no HDMI display device is connected, a timer function device or a level shift device (level shift) with a timer is added in the system design, and if no special processing is performed, the HDMI will be always in a power on power supply state or some working modes with lower power consumption, and will still consume power, and if the HDMI is small, the battery endurance time will be affected, and the whole system or product cannot pass the authentication and passing of the corresponding energy consumption regulation.
In view of this, the present application is presented.
Disclosure of Invention
The invention discloses a switching circuit of a timer device and electronic equipment, and aims to solve the problem that the conventional timer functional device is always in a power consumption state when an HDMI display device is not accessed.
A first embodiment of the present invention provides a switching circuit of a Retimer device, including: the device comprises a timer device, an HDMI connector, a switch loop and a voltage division loop;
the output end of the HDMI connector is electrically connected with the control end of the switch loop through the voltage division loop, the input end of the voltage division loop and the input end of the switch loop are used for connecting a power supply, the output end of the switch loop is electrically connected with the power supply end of the Retimer device, the input end of the Retimer device is used for connecting a graphic display output display unit, the output end of the Retimer device is connected with the input end of the HDMI connector, and the output end of the HDMI connector is used for connecting an HDMI display device;
wherein the voltage divider circuit is configured to enable the switch circuit to be turned off when the HDMI display device is removed from the HDMI connector, so that the Retimer device is disconnected from the power supply.
Preferably, the voltage division loop is further configured to turn on the switch loop when the HDMI display device is switched on, so that the power supply supplies power to the timer device.
Preferably, the switch circuit is configured to switch between an on state and an off state based on a voltage value output by the voltage dividing circuit;
in the on state, turning on an electrical connection between the power supply and the Retimer device;
in the off state, the electrical connection between the power supply and the Retimer device is broken.
Preferably, the voltage dividing circuit includes a first resistor and a second resistor;
the first end of the first resistor is used for connecting a power supply, the second end of the first resistor is grounded through the second resistor, the second end of the first resistor is electrically connected with a hot plug signal end of the HDMI connector, and the second end of the first resistor is electrically connected with a control end of the switch loop.
Preferably, the switching circuit comprises a first switching unit and a second switching unit;
the enabling end of the first switch unit and the enabling end of the second switch unit are electrically connected with the voltage dividing circuit, the input end of the first switch unit and the input end of the second switch unit are electrically connected with the power supply, the output end of the first switch unit is electrically connected with the first power supply end of the Retimer device, and the output end of the second switch unit is electrically connected with the second power supply end of the Retimer device.
Preferably, the Retimer device is configured to perform equalization and enhancement processing on the video and audio signal output by the graphic display output display unit, so as to correct and repair the video and audio signal.
A second embodiment of the present invention provides an electronic device, which includes a power supply, a graphic display output display unit, and a switching circuit of a Retimer device as described above, wherein the power supply is electrically connected to a power supply terminal of the Retimer device through the switch circuit, and the graphic display output display unit is electrically connected to the HDMI connector through the Retimer device.
The invention provides a switching circuit of a Retimer device and an electronic device, wherein the Retimer device is arranged between an HDMI connector and a graphic display output display unit, and a power supply supplies power to the Retimer device through a switch loop, wherein the voltage value from the voltage dividing circuit to the switch loop can be changed by inserting and pulling out the HDMI display device, and when the HDMI display device is pulled out from the HDMI connector, the switch loop can be turned off, so that the Retimer device is disconnected from the power supply, and the problem that an existing Retimer functional device is always in a power consumption state when the HDMI display device is not plugged in is solved.
Drawings
Fig. 1 is a switching circuit of a timer device according to a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
The invention discloses a switching circuit of a timer device and electronic equipment, and aims to solve the problem that an existing timer functional device is always in a power consumption state when an HDMI display device is not connected.
Referring to fig. 1, a first embodiment of the invention provides a switching circuit of a timer device, including: a timer device 4, an HDMI connector 5, a switch loop 3 and a voltage division loop 1;
the output end of the HDMI connector 5 is electrically connected to the control end of the switch circuit 3 through the voltage dividing circuit 1, the input end of the voltage dividing circuit 1 and the input end of the switch circuit 3 are used for connecting a power supply, the output end of the switch circuit 3 is electrically connected to the power supply end of the Retimer device 4, the input end of the Retimer device 4 is used for connecting a graphic display output display unit 2, the output end of the Retimer device 4 is connected to the input end of the HDMI connector 5, and the output end of the HDMI connector 5 is used for connecting an HDMI display device, wherein the HDMI connector 5 can be an HDMI connector 5 with various shapes and sizes, and is used for connecting a complete machine or a system with an external HDMI display;
wherein the voltage dividing loop 1 is configured to enable to turn off the switch loop 3 when the HDMI display device is removed from the HDMI connector 5, so that the timer device 4 is disconnected from the power supply.
The voltage division loop 1 is also configured to turn on the switch loop 3 when the HDMI display device is switched on, so that the power supply supplies power to the timer device 4.
It should be noted that the inventors found that: in the prior art, a Retimer device 4 is generally connected in series in a signal propagation link path to correct the distortion problem, however, the Retimer device 4 connected in series in the signal propagation link path is still in a power consumption state after the HDMI display device is removed or the HDMI display device is powered off.
In this embodiment, the Retimer device 4 is disposed between the HDMI connector 5 and the graphic display output display unit 2, and can perform equalization and enhancement processing on the video and audio signals output by the graphic display output display unit 2 to correct and repair the video and audio signals, and indirectly output the corrected and repaired signals to the HDMI connector 5 and then to an external HDMI display device.
Wherein, the power supply provides the power supply to the timer device 4 through the switch circuit 3, further, in this embodiment, the switch circuit 3 is configured to switch between an on state and an off state based on the voltage value output by the voltage division circuit 1; in the on state, the electrical connection between the power supply and the timer device 4 is switched on; when the power supply is in the off state, the power supply is disconnected from the electrical connection between the timer device 4, so that the problem that the conventional timer functional device is always in a power consumption state when the HDMI display equipment is not connected is solved.
In a possible embodiment of the invention, the switching circuit 3 comprises a first switching unit 31, and a second switching unit 32;
the enable terminal of the first switch unit 31 and the enable terminal of the second switch unit 32 are electrically connected to the voltage divider circuit, the input terminal of the first switch unit 31 and the input terminal of the second switch unit 32 are electrically connected to the power supply, the output terminal of the first switch unit 31 is electrically connected to the first power supply terminal of the timer device 4, and the output terminal of the second switch unit 32 is electrically connected to the second power supply terminal of the timer device 4.
It should be noted that the first switch unit 31 is configured to provide VCC _1p2v to the Retimer device 4, where Pin4 (Power enable) of the first switch unit 31 is turned on when it is at an input level, that is, the input and the output are short-circuited, and the voltage of VCC _1p2v is normally provided to the Retimer device 4, whereas if Pin4 is at a low level, the input and the output are turned off, and the Power supply of VCC _1p2v provided by the Retimer device 4 is cut off.
The second switch unit 32 is configured to provide VCC _3p3v to the timer device 4, where Pin4 (Power enable) of the second switch unit 32 is turned on when being at an input level, that is, the input and the output are short-circuited, and a voltage of VCC _3p3v is normally provided to the timer device 4, whereas if Pin4 is at a low level, the input and the output are turned off, and the Power supply of VCC _3p3v provided by the timer device 4 is cut off.
In one possible embodiment of the present invention, the voltage dividing circuit includes a first resistor RD1 and a second resistor RD2;
the first end of the first resistor RD1 is used for connecting a power supply, the second end of the first resistor RD1 is grounded through the second resistor RD2, the second end of the first resistor RD1 is electrically connected with the hot plug signal end of the HDMI connector 5, and the second end of the first resistor RD1 is electrically connected with the control end of the switch loop 3.
It should be noted that the first resistor RD1 and the second resistor RD2 are voltage dividing resistors for setting a network voltage dividing function for Hot plugging of an HPD (Hot Plug Detect) signal voltage dividing of the HDMI connector 5 preset for the whole device or the system circuit.
The automatic Power-off/Power-on automatic Power supply principle mechanism for hot plugging of the HDMI display is briefly described as follows:
a) When the HDMI connector 5 is not connected to an HDMI display output device, + VCC _ HPD = + VCC _03 × rd2/(Rd 1+ Rd 2), and the component values are set to Rd2=1/10Rd1, so that + VCC _ HPD = + VCC _02/11 is calculated, and this voltage level value is ensured to be smaller than the lowest input high active level voltage value of the power supply enabling control signal of the first switching unit 31 and the second switching unit 32, so that the input and output of the first switching unit 31 and the second switching unit 32 are disconnected, and the HDMI Retimer device 4 or the HDMI level conversion functional device with the Retimer function is completely powered off and is in a state of zero power consumption.
b) When the HDMI connector 5 is connected to an HDMI display output device, + VCC _ HPD = +5V, and this voltage level value is greater than the lowest input high-effective level voltage value of the power supply enable control signal of the first switch unit 31 and the second switch unit 32, so that the input and output of the first switch unit 31 and the second switch unit 32 are short-circuited, and the HDMI Retimer device 4 or the HDMI level conversion functional device with the Retimer function automatically restores power supply normally and performs equalization and enhancement processing on the video and audio signals at the input end to complete the function of signal correction, restoration and output to the HDMI display device.
A second embodiment of the present invention provides an electronic device, which comprises a power supply, a graphic display output display unit 2 and a switching circuit of a Retimer device 4 as described above, wherein the power supply is electrically connected to a power supply terminal of the Retimer device 4 through the switch circuit 3, and the graphic display output display unit 2 is electrically connected to the HDMI connector 5 through the Retimer device.
The invention provides a switching circuit of a Retimer device and an electronic device, wherein the Retimer device 4 is configured between an HDMI connector 5 and a graphic display output display unit 2, and a power supply supplies power to the Retimer device 4 through a switch loop 3, wherein the voltage value from the voltage dividing circuit to the switch loop 3 can be changed by inserting and extracting the HDMI display device, and when the HDMI display device is removed from the HDMI connector 5, the switch loop 3 can be turned off, so that the Retimer device 4 is disconnected from the power supply, and the problem that the existing Retimer functional device is always in a power consumption state when the HDMI display device is not connected is solved.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention.
Claims (7)
1. A switching circuit of a Retimer device, comprising: the device comprises a timer device, an HDMI connector, a switch loop and a voltage division loop;
the output end of the HDMI connector is electrically connected with the control end of the switch loop through the voltage division loop, the input end of the voltage division loop and the input end of the switch loop are used for connecting a power supply, the output end of the switch loop is electrically connected with the power supply end of the Retimer device, the input end of the Retimer device is used for connecting a graphic display output display unit, the output end of the Retimer device is connected with the input end of the HDMI connector, and the output end of the HDMI connector is used for connecting an HDMI display device;
wherein the voltage divider circuit is configured to enable the switch circuit to be turned off when the HDMI display device is removed from the HDMI connector, so that the Retimer device is disconnected from the power supply.
2. The switching circuit of claim 1, wherein the voltage divider circuit is further configured to turn on the switch circuit when the HDMI display device is turned on, so that the power supply supplies power to the Retimer device.
3. The switching circuit of claim 1, wherein the switching circuit is configured to switch between an on state and an off state based on a voltage value output by the voltage divider circuit;
in the on state, turning on an electrical connection between the power supply and the Retimer device;
in the off state, the electrical connection between the power supply and the Retimer device is broken.
4. The switching circuit of a Retimer device of claims 1 or 2, wherein the voltage divider circuit comprises a first resistor and a second resistor;
the first end of the first resistor is used for connecting a power supply, the second end of the first resistor is grounded through the second resistor, the second end of the first resistor is electrically connected with the hot plug signal end of the HDMI connector, and the second end of the first resistor is electrically connected with the control end of the switch loop.
5. The switching circuit of a Retimer device of claim 1 or 3, wherein the switch circuit comprises a first switch unit and a second switch unit;
the enabling end of the first switch unit and the enabling end of the second switch unit are electrically connected with the voltage dividing circuit, the input end of the first switch unit and the input end of the second switch unit are electrically connected with the power supply, the output end of the first switch unit is electrically connected with the first power supply end of the Retimer device, and the output end of the second switch unit is electrically connected with the second power supply end of the Retimer device.
6. The switching circuit of claim 1, wherein the Retimer device is configured to equalize and enhance the video/audio signal outputted from the graphic display output unit to achieve the correction and restoration of the video/audio signal.
7. An electronic apparatus comprising a power supply, a graphic display output display unit and the switching circuit of a Retimer device of any of claims 1 to 6, wherein the power supply is electrically connected to a power supply terminal of the Retimer device through the switch circuit, and the graphic display output display unit is electrically connected to the HDMI connector through the Retimer device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211370284.4A CN115940322B (en) | 2022-11-03 | 2022-11-03 | Switching circuit of re-timer device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211370284.4A CN115940322B (en) | 2022-11-03 | 2022-11-03 | Switching circuit of re-timer device and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115940322A true CN115940322A (en) | 2023-04-07 |
| CN115940322B CN115940322B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211370284.4A Active CN115940322B (en) | 2022-11-03 | 2022-11-03 | Switching circuit of re-timer device and electronic equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106776421A (en) * | 2016-11-18 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of PCIE IOBOX and its hot-plug method with Retimer |
| CN107370978A (en) * | 2017-07-12 | 2017-11-21 | 广州视源电子科技股份有限公司 | Control method and system of HDMI output device and storage medium |
| CN112612736A (en) * | 2020-12-17 | 2021-04-06 | 苏州浪潮智能科技有限公司 | On-site detection method of timer adapter card and server system |
| CN213637977U (en) * | 2020-11-16 | 2021-07-06 | 沈阳火炬北泰数码科技有限责任公司 | HDMI signal distribution system with remote transmission function |
| CN113259614A (en) * | 2021-05-13 | 2021-08-13 | 合肥联宝信息技术有限公司 | HDMI switching circuit and electronic equipment |
-
2022
- 2022-11-03 CN CN202211370284.4A patent/CN115940322B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106776421A (en) * | 2016-11-18 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of PCIE IOBOX and its hot-plug method with Retimer |
| CN107370978A (en) * | 2017-07-12 | 2017-11-21 | 广州视源电子科技股份有限公司 | Control method and system of HDMI output device and storage medium |
| CN213637977U (en) * | 2020-11-16 | 2021-07-06 | 沈阳火炬北泰数码科技有限责任公司 | HDMI signal distribution system with remote transmission function |
| CN112612736A (en) * | 2020-12-17 | 2021-04-06 | 苏州浪潮智能科技有限公司 | On-site detection method of timer adapter card and server system |
| CN113259614A (en) * | 2021-05-13 | 2021-08-13 | 合肥联宝信息技术有限公司 | HDMI switching circuit and electronic equipment |
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| Publication number | Publication date |
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| CN115940322B (en) | 2023-10-20 |
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