CN110389865B - Portable electronic device and signal output method - Google Patents
Portable electronic device and signal output method Download PDFInfo
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- CN110389865B CN110389865B CN201810352043.4A CN201810352043A CN110389865B CN 110389865 B CN110389865 B CN 110389865B CN 201810352043 A CN201810352043 A CN 201810352043A CN 110389865 B CN110389865 B CN 110389865B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
- G06F11/2221—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test input/output devices or peripheral units
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2247—Verification or detection of system hardware configuration
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Abstract
The invention provides a portable electronic device and a signal output method. The portable electronic device is provided with a microcontroller, a processor, a display converter and a display interface. The microcontroller receives the display line information and generates a control signal according to the display line information. The processor outputs a display signal. The display converter is electrically connected with the processor and the microcontroller, receives the display signal and the control signal, converts the display signal into a display conversion signal according to the control signal, and outputs the display conversion signal. The display interface is electrically connected to the display converter. The display interface is used for inserting a display line and transmitting a display conversion signal to an external display through the display line.
Description
Technical Field
The present invention relates to signal processing technology, and more particularly to a signal output method and a portable electronic device.
Background
In the verification stage of development, the portable electronic device must undergo various measurements and analyses, such as eye diagram analysis, to ensure that the output signal meets the signal testing requirements of the certification laboratory. In the testing process, once the signal output by the portable electronic device does not meet the testing requirement, a researcher needs to manually adjust the configuration resistor on the printed circuit board assembly (Printed Circuit Board Assembly, PCBA) repeater chip, thereby changing the configuration parameters until the specification of the output signal meets the specification.
Then, the portable electronic device is also matched with various display lines and displays with different specifications to perform a certain number of compatibility tests. When the compatibility test is performed, if the display line and the display are matched to cause no display or poor display quality, the configuration resistance on the repeater chip is required to be adjusted by manual welding of a research and development personnel, so that the specification of the output signal cannot be adjusted in real time.
Moreover, since the adjusted configuration parameters are cured on the portable electronic device during mass production, when the user applies the portable electronic device to the combination of the untested display line and the display, the problem of no display or poor display quality may still occur. At this time, the user must send the portable electronic device back to the factory for maintenance, which is quite inconvenient. Therefore, how to adjust the specification of the output signal more conveniently is a problem required to be solved by the person skilled in the art.
Disclosure of Invention
The invention is directed to a portable electronic device and a signal output method, which can dynamically adjust an output signal according to display line information of matched display lines.
According to an embodiment of the invention, a portable electronic device is used for connecting an external display through a display line, and the portable electronic device comprises a microcontroller, a processor, a display converter and a display interface. The microcontroller receives display line information of the display line and generates a control signal according to the display line information. The processor outputs a display signal. The display converter is electrically connected with the processor and the microcontroller. The display converter receives the display signal and the control signal, converts the display signal into a display conversion signal according to the control signal, and outputs the display conversion signal. The display interface is electrically connected to the display converter to receive the display conversion signal. The display interface is used for inserting a display line and transmitting a display conversion signal to an external display through the display line.
According to an embodiment of the present invention, a signal output method is applicable to a portable electronic device, the portable electronic device includes a microcontroller, a processor, a display converter and a display interface, the display converter is electrically connected to the processor and the microcontroller, the display interface is electrically connected to the display converter, the signal output method includes: detecting that a display wire is inserted into the portable electronic device through the display interface; receiving display line information of a display line through a microcontroller, and generating a control signal according to the display line information; generating, by a processor, a display signal; converting the display signal into a display conversion signal by a display converter according to the control signal; and transmitting a display conversion signal to an external display through the display interface and the display line.
Based on the above, the portable electronic device and the signal output method provided by the invention can receive the display line information through the microcontroller. Therefore, the portable electronic device can dynamically and real-time adjust the display signals output to the display line and the external display.
Drawings
FIG. 1 is a schematic diagram of a portable electronic device and an external display according to an embodiment;
FIG. 2 is a schematic diagram of a portable electronic device according to an embodiment;
FIG. 3 is a flow chart of a signal output method according to the embodiment of FIG. 2;
FIG. 4 is a schematic diagram of a portable electronic device according to another embodiment;
fig. 5 is a flowchart of a signal output method according to the embodiment of fig. 4.
Description of the reference numerals
20: external display
30: display line
100. 200, 400: a portable electronic device;
230. 430: micro controller
210. 410: processor and method for controlling the same
220. 420: display converter
240. 440: display interface
450: relay controller
S310 to S350, S510 to S580: step (a)
Detailed Description
Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
Referring to fig. 1, fig. 1 is a schematic diagram of a portable electronic device and an external display according to an embodiment. The portable electronic device 100 of the present invention is, for example, a personal computer, a notebook computer, a tablet computer, a mobile phone, etc. The external display 20 is used for displaying images and colors, such as a projection display, an Organic Light-Emitting Diode (OLED) display, a Light-Emitting Diode (LED) display, a Liquid Crystal Display (LCD), and the like. In the present embodiment, the types of the portable electronic device 100 and the external display 20 are not limited to the above.
In the present embodiment, the portable electronic device 100 and the external display 20 have display interfaces with corresponding specifications, and the user can connect the display lines 30 with corresponding specifications to the display interfaces of the portable electronic device 100 and the external display 20 at the same time. Thus, the portable electronic device 100 transmits the display signal to the external display 20 through the display line 30.
The Display line 30 is a transmission line for transmitting video and audio and conforming to a transmission specification, such as a universal serial bus Type C (USB Type-C), a high-definition multimedia interface (High Definition Multimedia Interface, HDMI), a Display interface (DP), and a MINI-Display interface (Mini Display Port, MINI Port), but is not limited thereto.
Referring to fig. 2, fig. 2 is a schematic diagram of a portable electronic device according to an embodiment. The portable electronic device 200 of the present embodiment has a processor 210, a display converter 220, a microcontroller 230, and a display interface 240.
The microcontroller 230 is configured to receive display line information of the display lines and generate control signals to the display converter 230. The microcontroller 230 may be implemented by a single chip microcomputer (Micro Control Unit, MCU) or an embedded controller (Embedded Controller, EC), but the present invention is not limited thereto.
The processor 210 is configured to run various software of the portable electronic device 200 and process various signals, such as generating display signals. The processor 210 may be a central processing unit (Central Processing Unit, CPU), or other general purpose or special purpose Microprocessor (Microprocessor), graphics processor (Graphics Processing Unit, GPU) digital signal processor (Digital Signal Processor, DSP), programmable controller, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or other similar components or combinations thereof, but the invention is not limited to such.
The display converter 220 is electrically connected to the microcontroller 230 and the processor 210 for adjusting the loss caused by the signal transmission to extend the signal transmission distance. The display converter 230 is, for example, a Repeater (Repeater), a redrive (Re-driver), or a reset timer (Re-timer).
The display interface 240 is electrically connected to the display converter 220, and by connecting a connector of the display line to the display interface 240, the signal output by the portable electronic device 200 is transmitted to the external display through the display line. The Display interface 240 may be implemented as a Display interface that conforms to a universal serial bus Type C (USB Type-C), a high-definition multimedia interface (High Definition Multimedia Interface, HDMI for short), a Display interface (DP for short), a MINI-Display interface (Mini Display Port, MINI Port) for transmitting video and audio, and conforms to a transmission specification. However, the present invention is not limited thereto.
Fig. 3 is a flowchart of a signal output method according to the embodiment of fig. 2. The flow of processing and outputting the display signal by the portable electronic device 200 will be described with reference to fig. 2 and 3.
In step S310, when the user inserts the display line into the display interface 240 of the portable electronic device, the portable electronic device 200 detects that the display line is inserted into the portable electronic device 200 through the display interface 240.
In step S320, the portable electronic device 200 receives the display line information through the micro controller 230 and generates a control signal according to the display line information. In this embodiment, the user may input display line information through the man-machine interface, so that the microcontroller 230 receives the display line information input by the user. The man-machine interface is electrically connected to the microcontroller 230, and the man-machine interface includes: the display line information is input to the microcontroller 230 through cooperation of an input device such as a keyboard, a mouse, a touch screen, etc. and software running on the portable electronic device 200, or through communication between various computers and the portable electronic device 200. The display line information has at least information of the length of the display line. In other application scenarios, the user may also input, for example, the age or year of manufacture of the display line, but the invention is not limited thereto.
The microcontroller 230 reads the configuration parameter mapping table to select the compensation parameter corresponding to the display line information according to the configuration parameter mapping table, so as to generate the control signal according to the compensation parameter. The configuration parameter correspondence table is, for example, table one:
table one: configuration parameter correspondence table
It should be noted that the configuration parameter mapping table in table one is merely exemplary, and the configuration parameter table may be set according to the actual requirement. For example, the line length of the display line may be set to a length common in the market, for example, to have a length of more than 1.2 meters, 1.5 meters, 1.8 meters, or longer than 10 meters, 15 meters, 20 meters, 25 meters, 30 meters, and the like. The compensation parameter value can also be set according to practical requirements, for example, 8 db, 10 db, 12 db, 14 db, 16 db, etc. In addition, in the table-configuration parameter mapping table, the compensation parameter values corresponding to the line lengths are merely exemplary, and in practice, the compensation parameter values corresponding to the line lengths are adjusted according to different product specifications, parts and actual measurement results, which is not a limitation of the present invention. Furthermore, in an embodiment of the present invention, the configuration parameter mapping table is stored in a Cache (Cache) of the microcontroller 230, but the present invention is not limited thereto.
In this embodiment, the microcontroller 230 generates the control signal according to the rapidly set compensation parameter values in the configuration parameter mapping table without the user inputting the fine setting command. For example, if the user inserts a display line with a length of 3 meters into the display interface 240, the microcontroller 230 sets the compensation parameter value to 2 db according to the configuration parameter mapping table, and generates the control signal accordingly.
After the microcontroller 230 generates the control signal according to the compensation parameter, the control signal is transmitted to the display converter 220. In an embodiment of the present invention, the microcontroller 230 sends control signals to the display converter 220 via General-purpose input/output control (GPIO for short).
In step S330, the portable electronic device 200 generates a display signal through the processor 210. The processor 210 may generate a display signal according to a screen displayed on the display screen of the portable electronic device 200, or generate a display signal according to a specific application program executed by the portable electronic device 200, which is not limited to this. The processor 210 transmits the generated display signal to the display converter 220 through a bus (e.g., a bus 0 supporting a video specification, video bus 0).
In step S340, the portable electronic device 200 converts the display signal into a display conversion signal according to the control signal through the display converter 220. Since the microcontroller 230 has configured the compensation parameter values for the display converter 220 via the pins of the general-purpose input-output control in step S320. Therefore, when the display signal passes through the display converter 220, the display signal is converted into a display conversion signal according to the compensation parameter value of the display converter 220. The display converter 220 transmits the generated display signals to the display interface 240 via a bus (e.g., bus 1 supporting video specification, video bus 1).
In step S350, the portable electronic device 200 transmits a display conversion signal to an external display through the display interface and the display line.
Through the above-mentioned process of the signal output method, the portable electronic device 200 dynamically adjusts the compensation parameters of the display converter 220 according to different display line information. Therefore, the portable electronic device 200 can maintain the quality of the output signal even if the user transmits the display conversion signal using a different display line.
Referring to fig. 4 again, fig. 4 is a schematic diagram of a portable electronic device according to another embodiment. In this embodiment, the processor 410, the display converter 420, the microcontroller 430 and the display interface 440 of the portable electronic device 400 are the same as the processor 210, the display converter 220, the microcontroller 230 and the display interface 240 of fig. 2, and are not described herein. However, the portable electronic device 400 further includes a relay controller 450.
The relay controller 450 is electrically connected to the microcontroller 430 and the display interface 440. In this embodiment, the relay controller 450 obtains display line information (for example, display line supporting USB Type C) of the display line with the E-mark chip through a configuration channel (Configuration Channel Bus, abbreviated as CC Bus). The relay Controller 450 is, for example, a power transmission Controller (Power Delivery Controller, abbreviated as PD Controller).
Referring to fig. 4 and fig. 5, fig. 5 is a flowchart of a signal output method according to the embodiment of fig. 4.
In step S510, when the user inserts the display line into the display interface 440 of the portable electronic device, the portable electronic device 400 detects that the display line is inserted into the portable electronic device 400 through the display interface 440.
In step S520, the portable electronic device 400 automatically obtains the display line information of the display line through the relay controller 450. Because the relay controller 450 may obtain the display line information through the configuration channel, the user no longer needs to input the display line information by himself. In this embodiment, after the relay controller 450 obtains the display line information, the display line information is transmitted to the microcontroller 430 through the support I2C/SPI bus.
Note that, since the relay controller 450 cannot communicate with the display line without the E-mark chip, if the display line inserted by the user does not have the E-mark chip, the user still has to input the display line information through the man-machine interface even if the portable electronic device 400 is configured with the relay controller 450.
In step S530, the portable electronic device 400 receives the display line information through the microcontroller 430 and generates a control signal according to the display line information. In step S520, the display line information is acquired by the relay controller 450 or input by the user and transmitted to the microcontroller 430. The process of generating the control signal by the microcontroller 430 according to the display line information is the same as that of step S320 in fig. 3, and will not be described again here.
In step S540, the portable electronic device 400 generates a display signal through the processor 410. In step S550, the portable electronic device 400 converts the display signal into a display conversion signal according to the control signal through the display converter 420. In S560, the portable electronic device 400 transmits a display conversion signal to the external display through the display interface 440 and the display line. The details of the flow and execution of steps S540 to S560 are the same as those of steps S330 to S350 in fig. 3, and will not be repeated here.
Although the compensation parameters of the display converter 420 are adjusted by the microcontroller 430 in steps S510 to S560, the effect of the display line length on the quality of the display converted signal can be dynamically improved, but the signal quality also decreases with the use of the built-in components of the portable electronic device 400 and the display line.
Therefore, after step S560 of the present embodiment, the portable electronic device 400 further executes step S570 to determine whether a refinement setting instruction is received through the man-machine interface. If the user inputs the fine setting instruction through the man-machine interface, the man-machine interface will transmit the fine setting instruction to the microcontroller 430. Thus, in step S580, the microcontroller 430 adjusts the compensation parameter according to the step parameter value.
In this embodiment, the step parameter is 0.5 db, but the step parameter can be set to the minimum step value that can be adjusted according to different chip types. In detail, when the user inserts the display line of 3 meters, the compensation parameter is 2 db at the time of going through steps S510 to S560. When the user inputs the fine setting command through the man-machine interface, the microcontroller 410 will adjust the compensation parameter value to 2.5 db and generate a corresponding control command, and then the control command will be transmitted to the display converter 420, whereby the display signal will generate a corresponding display conversion signal according to the adjusted compensation parameter value, and output to the external display through the display interface 440 and the display line. It should be noted that, in the present embodiment, when executing the input refinement setting instruction, the microcontroller 430 transmits the display line information to the display converter 420 by supporting the I2C/SPI bus.
Through the picture that the external display shows, the user can judge whether the quality of signal accords with the demand. If the quality of the signal is not satisfied, the user can further give a fine setting instruction. At this time, the portable electronic device 400 repeatedly performs steps S570 to S580, and adjusts the compensation parameter value according to the step parameter value until the user is satisfied with the signal quality.
In order to provide a more user-friendly operating environment, corresponding software is further provided for the user to operate in the embodiment. In detail, in this software, for displaying line information, two modes are provided for the user to select. The first mode is an automatic reading mode, and is applicable to a display line provided with an E-mark chip. When the user selects the mode, the portable electronic device 400 automatically reads the information of the display line through the relay controller 450. The second mode is a manual selection mode, and is applicable to display lines without E-mark chips. The user can obtain the wire length of the display wire by measuring the display wire or from the package of the display wire, and input the display wire information into the portable electronic device 400 through the man-machine interface.
In addition, this software provides two modes for the user to choose from for the way the compensation parameter values are adjusted. The first mode is a fast setting mode, and is suitable for the early verification stage, and suitable recommended compensation parameter values are adjusted in a laboratory through matching wires with various lengths. Therefore, when various display lines are first plugged into the portable electronic device 400, the microcontroller 430 can generate control instructions according to the corresponding compensation parameter values in the fast setting mode, and output signals accordingly. The second mode is a fine setting mode, which is suitable for selecting when the user considers that the display effect is not good. Thus, the microcontroller 430 can adjust the compensation parameter value according to the step parameter value, thereby fine-tuning to the optimal display effect.
In summary, the portable electronic device and the signal output method provided by the embodiments of the present invention further provide a microcontroller. The microcontroller adjusts the control signal to the display converter by acquiring the display line information. Therefore, the portable electronic device can dynamically and real-time adjust the signal relay enhancement amplitude, not only reduces the working complexity of research personnel in the development process, but also dynamically adjusts the signal output quality according to the conditions of aging of chips in a main board, oxidation of copper wires, abrasion of golden fingers of a connector, uneven display wires and the like. Not only maintains the signal output quality, but also enhances the service life of the product.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. A portable electronic device for connecting an external display through a display line, the portable electronic device comprising:
the microcontroller receives display line information of the display line and generates a control signal according to the display line information;
a processor outputting a display signal;
the display converter is electrically connected with the processor and the microcontroller, receives the display signal and the control signal, converts the display signal into a display conversion signal according to the control signal, and outputs the display conversion signal; and
the display interface is electrically connected to the display converter to receive the display conversion signal, and is used for inserting the display line and transmitting the display conversion signal to the external display through the display line.
2. The portable electronic device of claim 1, further comprising:
the relay controller is electrically connected to the display interface and the microcontroller, acquires the display line information of the display line through the display interface, and transmits the display line information to the microcontroller.
3. The portable electronic device of claim 1, further comprising:
the man-machine interaction interface is electrically connected to the processor and used for receiving the display line information and transmitting the display line information to the microcontroller.
4. The portable electronic device according to claim 1, wherein the microcontroller further reads a configuration parameter mapping table to select a compensation parameter corresponding to the display line information according to the configuration parameter mapping table, and generates the control signal according to the compensation parameter.
5. The portable electronic device of claim 4, further comprising:
the man-machine interaction interface is electrically connected to the microcontroller, receives the fine setting instruction and transmits the fine setting instruction to the microcontroller so that the microcontroller adjusts the compensation parameter according to the stepping parameter value.
6. The signal output method is suitable for a portable electronic device, the portable electronic device comprises a microcontroller, a processor, a display converter and a display interface, the display converter is electrically connected with the processor and the microcontroller, and the display interface is electrically connected with the display converter, and the signal output method is characterized by comprising the following steps:
detecting insertion of a display line into the portable electronic device through the display interface;
receiving display line information of the display line through the microcontroller, and generating a control signal according to the display line information;
generating, by the processor, a display signal;
converting the display signal into a display conversion signal by the display converter according to the control signal; and
and transmitting the display conversion signal to an external display through the display interface and the display line.
7. The method of claim 6, wherein the portable electronic device further comprises a relay controller electrically connected to the display interface and the microcontroller, and the step of receiving the display line information by the microcontroller and generating the control signal according to the display line information comprises:
and automatically acquiring the display line information of the display line through the relay controller.
8. The method according to claim 6, wherein the portable electronic device further comprises a man-machine interface electrically connected to the microcontroller, and wherein the step of receiving the display line information by the microcontroller and generating the control signal according to the display line information comprises:
and receiving the display line information through the man-machine interaction interface.
9. The signal output method according to claim 6, wherein the step of receiving the display line information by the microcontroller and generating the control signal according to the display line information comprises:
and receiving the display line information through the microcontroller, reading a configuration parameter corresponding table, selecting compensation parameters corresponding to the display line information according to the configuration parameter corresponding table, and generating the control signal according to the compensation parameters.
10. The signal output method according to claim 9, wherein the portable electronic device further comprises a man-machine interface, the man-machine interface is electrically connected to the microcontroller, the man-machine interface is used for receiving a refinement setting instruction, and the refinement setting instruction is transmitted to the microcontroller, so that the microcontroller adjusts the compensation parameter according to the stepping parameter value.
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