CN115483945A - Identification and pairing method for signal processing system and signal transmission device - Google Patents

Identification and pairing method for signal processing system and signal transmission device Download PDF

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Publication number
CN115483945A
CN115483945A CN202110664972.0A CN202110664972A CN115483945A CN 115483945 A CN115483945 A CN 115483945A CN 202110664972 A CN202110664972 A CN 202110664972A CN 115483945 A CN115483945 A CN 115483945A
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China
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date
signal
signal processing
information
signal transmission
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CN202110664972.0A
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Chinese (zh)
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宋廉祥
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Realtek Semiconductor Corp
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Realtek Semiconductor Corp
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Priority to CN202110664972.0A priority Critical patent/CN115483945A/en
Publication of CN115483945A publication Critical patent/CN115483945A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/08—Protocols for interworking; Protocol conversion

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Communication Control (AREA)

Abstract

A signal processing system comprises a signal processing device and a signal transmission device. The signal processing device comprises a processor and a memory device for storing first information. The signal transmission device comprises a memory device for storing second information. In the device identification and pairing process, the processor reads the first information and the second information, determines a critical date according to a first date and an allowance indicated by the first information, and determines whether a second date indicated by the second information is earlier than the critical date. When the processor determines that the second date is earlier than the critical date, the processor controls the signal processing device to operate in a limited mode, wherein the signal processing device does not output any signal to the signal transmission device or ignores any signal from the signal transmission device, or only outputs a limited signal to the signal transmission device.

Description

Identification and pairing method for signal processing system and signal transmission device
Technical Field
The invention relates to a method for identifying and pairing a signal transmission device and a signal processing system for implementing the method.
Background
A cable or transmission line is a signal transmission device that is often used and coupled between two electronic devices for transmitting electrical signals. In order to make the existing electronic devices more featured, the developers of the electronic devices nowadays not only improve the functions and performance of the electronic devices, but also adjust the design of cables or transmission lines accordingly, so that the performance of the final products can be more prominent and the consumers' favor can be obtained.
With this particular design, identification and pairing between the electronic device and the cable/transmission line becomes an important operation. In particular, in order to prevent the electronic devices and cables/transmission lines from being maliciously copied by unskilled persons (i.e., illegal manufacturers/users) on the market while maintaining the convenience of product production, maintenance and inventory management, a method for effectively identifying and pairing signal transmission devices and a signal processing system for implementing the same are needed.
Disclosure of Invention
An object of the present invention is to effectively identify and pair signal transmission devices to prevent electronic devices and cables/transmission lines from being maliciously duplicated by unskilled persons in the market, while maintaining convenience in product production, maintenance and inventory management.
According to one embodiment of the invention, a signal processing system comprises a signal processing device and a signal transmission device. The signal processing device comprises a processor and a memory device. The memory device stores first information. The signal transmission device is coupled with the signal processing device and comprises a memory device for storing second information. In the device identification and pairing process, the processor reads first information from the memory device of the signal processing device, reads second information from the memory device of the signal transmission device, determines a critical date according to a first date and a margin (margin) indicated by the first information, and determines whether a second date indicated by the second information is earlier than the critical date. When the processor determines that the second date is earlier than the critical date, the processor controls the signal processing device to operate in a limited mode. In the limited mode, the signal processing means does not output any signal to the signal transmission means or ignores any signal from the signal transmission means, or the signal processing means outputs only a limited signal to the signal transmission means.
According to one embodiment of the invention, an identification and pairing method of a signal transmission device comprises the following steps: reading a memory device of a signal processing device in a signal processing system to obtain first information; reading a memory device of a signal transmission device in the signal processing system to obtain second information; determining a threshold date according to a first date and an allowance (margin) indicated by the first information; determining whether a second date indicated by the second information is earlier than the critical date; and controlling the signal processing device to operate in a limited mode when the second date is judged to be earlier than the critical date. In the limited mode, the signal processing means does not output any signal to the signal transmission means or ignores any signal from the signal transmission means, or the signal processing means outputs only a limited signal to the signal transmission means.
Drawings
Fig. 1 is a block diagram of a signal processing system according to an embodiment of the invention.
Fig. 2 is a flowchart illustrating an identification and pairing method of a signal transmission device according to an embodiment of the present invention.
Description of the symbols
100: host device
110. 310: signal processing device
111. 121, 311: processor with a memory having a plurality of memory cells
112. 210, 312: memory device
120: chip device
122: signal processing circuit
123: power supply module
200: signal transmission device
250. 255: connector with a locking member
300: display device
320: display panel
321: panel device
322: loudspeaker device
Detailed Description
Fig. 1 is a block diagram of a signal processing system according to an embodiment of the invention. The signal processing system may include a host device 100, a signal transmission device 200, and a display apparatus 300. In one embodiment of the present invention, the host device 100 can be used as a signal source for outputting at least one signal (e.g., a power signal, a control signal, a video signal, an image signal, an audio signal, etc.), and the display apparatus 300 can receive the signal provided by the host device 100 through the signal transmission device 200. According to an embodiment of the present invention, the host device 100 may be implemented by an electronic product, such as, but not limited to, a host device of a split tv, a mobile device of a mobile phone or a tablet computer, a computer device of a notebook computer or a desktop computer, a set-top box (abbreviated STB), or a Compact Disc (abbreviated CD)/Digital Versatile Disc (abbreviated DVD) player. The display device 300 may be implemented by, for example, but not limited to, a display panel of a split tv, a screen, or an electronic product such as a digital tv.
The signal transmission device 200 is a pluggable or removable physical device coupled between the host device 100 and the display apparatus 300 for transmitting power signals, control signals, current signals, voltage signals, video signals, image signals, audio signals, or any communication signals generated according to any communication protocol between the host device 100 and the display apparatus 300. In an embodiment of the present invention, the signal transmission device 200 may be a cable (cable), which may be implemented according to any existing specification, such as, but not limited to, a High Definition Multimedia Interface (HDMI) specification, a Universal Serial Bus (USB) specification, etc., or may be implemented according to other special specifications (e.g., a product specification defined by a manufacturer or a product specification modified according to an existing specification).
It should be noted that fig. 1 is a simplified block diagram of the signal processing system, wherein the signal transmission apparatus 200 is represented by a grid block. The signal transmission device 200 of the present invention is not limited to the shape or form shown in the drawings. For example, the signal transmission device 200 may actually include a plug or a connector for connecting the host device 100 and the display apparatus 300, such as one or more of the connectors 250 and 255, and a transmission line for transmitting signals. Further, it is noted that FIG. 1 is drawn by way of example, and that the various components are not necessarily drawn to scale.
According to an embodiment of the present invention, the host device 100 may at least include a signal processing device 110 and a Chip device 120, for example, a System on a Chip (SoC). The signal processing device 110 may be, for example, but not limited to, a Bridge device (Bridge) for performing signal conversion on one or more signals provided to or received from the signal transmission device 200. Chip device 120 may be, for example, but not limited to, a host chip of a separated television, which serves as a signal source of the signal processing system. For example, the chip device 120 may obtain a power signal and/or a signal to be played through the Display apparatus 300 in a wired or wireless manner, and provide the received signal to the signal processing device 110 according to an internal communication protocol (such as, but not limited to, a V-by-One communication protocol or a DP (Display Port) communication protocol) after being processed appropriately. The signal processing device 110 may perform signal conversion on the received signal, including conversion of the communication protocol, and provide the processed signal to the signal transmission device 200, so that the signal can be transmitted to the display apparatus 300 through the signal transmission device 200 according to an external communication protocol (such as, but not limited to, standard or modified HDMI or USB). It should be noted that the signal transmission among the chip device 120, the signal processing device 110 and the signal transmission device 200 can be bidirectional, so that the signal processing device 110 can also perform the inverse communication protocol and signal conversion on the signal received from the signal transmission device 200 by similar logic.
According to an embodiment of the present invention, the internal communication protocol of the host device 100 and the external communication protocol may be different communication protocols. For example, the internal communication protocol may be designed for relatively short distance and relatively low speed transmission, and the external communication protocol may be designed for relatively long distance and relatively high speed transmission. More specifically, in embodiments of the present invention, the total transmission bandwidth achieved in compliance with the external communication protocol may be greater than or equal to the total transmission bandwidth achieved in compliance with the internal communication protocol. Therefore, in one embodiment of the present invention, the number of channels or lanes (lane) configured outside the host device 100 and operating according to the external communication protocol may be less than the number of channels or lanes configured inside the host device 100 and operating according to the internal communication protocol. Therefore, the volume of the signal transmission device 200 can be effectively reduced, and the effect of beautifying the device is achieved.
The signal processing device 110 may include a processor 111 and a memory device 112. The processor 111 is used for controlling the operation of the signal processing apparatus 110, and the memory device 112 is used for storing data required by the operation of the signal processing apparatus 110. Chip device 120 may include a processor 121, a signal processing circuit 122, and a power module 123. The processor 121 is used for controlling the operations of the chip device 120. The signal processing circuit 122 is used for processing the received signals, for example, performing various processes for optimizing the image or audio signals. The power module 123 is used to control the overall power system of the host device 100, and may further include power control, power monitoring, and/or power output devices. It is noted that in some embodiments, the processors 111 and/or 121 may be implemented by a general-purpose processor or a microprocessor, and the processor 121 and the signal processing circuit 122 may be integrated into a single processor device.
The display device 300 may at least include a signal processing apparatus 310 and a display panel 320. The signal processing device 310 may be, for example but not limited to, a bridge device for performing signal conversion, including conversion of communication protocols, on one or more signals provided to or received from the signal transmission device 200. For example, the signal processing device 310 may receive signals from the signal transmission device 200 according to the external communication protocol, and perform signal conversion (including conversion of the communication protocol) on the received signals, so that the signals may then be transmitted to the display panel 320 according to the internal communication protocol. Similarly, the signal transmission among the signal transmission device 200, the signal processing device 310 and the display panel 320 can be bidirectional, so that the signal processing device 310 can also perform the inverse communication protocol and signal conversion on the signals received from the display panel 320 by similar logic.
According to an embodiment of the present invention, the internal communication protocol of the display device 300 and the external communication protocol may be different communication protocols. For example, similarly, the internal communication protocol of the display device 300 may be designed for relatively short distance and relatively low speed transmission, and the external communication protocol may be designed for relatively long distance and relatively high speed transmission. For the description of the internal communication protocol and the external communication protocol of the display apparatus 300, reference is made to the relevant paragraphs of the host device 100, which are not repeated herein.
The signal processing device 310 may include a processor 311 and a memory device 312. The processor 311 is used for controlling the operation of the signal processing apparatus 310, and the memory device 312 is used for storing data required by the operation of the signal processing apparatus 310. The display panel 320 may include a panel device 321 and/or a speaker device 322. It should be noted that fig. 1 shows only the components relevant to the present invention. Those skilled in the art will appreciate that the signal processing system, the host device 100 and the display apparatus 300 may comprise other components not shown in fig. 1 to implement the required signal processing functions.
According to an embodiment of the present invention, the signal transmission device 200 may further include a memory device 210 in addition to the connector or plug and the transmission line for transmitting signals. It should be noted that the present invention is not limited to the memory device 210 being disposed on any one of the transmission line or the connector or the plug end of the signal transmission device 200. As described above, in order to avoid malicious duplication of electronic devices and cables/transmission lines by unskilled persons in the market while maintaining convenience in product production, maintenance and inventory management, the present invention provides a method for efficiently identifying and pairing signal transmission devices, in which memory devices of at least one of the host device 100 and the display apparatus 300, such as the memory devices 112 and/or 312, store date information, and the memory device 210 of the signal transmission device 200 also stores date information. In the embodiment of the present invention, by determining whether the date indicated by each date information is a reasonable configuration, the host device 100 and/or the display apparatus 300 can effectively identify and pair the signal transmission device 200. In order to generate the partition, the date information stored in the memory device of the host device 100 and/or the display device 300 is named "first information" and the date information stored in the memory device of the signal transmission device 200 is named "second information" below. In addition, since the method for identifying and pairing a signal transmission device provided by the present invention can be implemented in any one of the signal processing device 110 and the signal processing device 310, for brevity of characters, the signal processing device will be referred to as the signal processing device 110 and/or the signal processing device 310 shown in fig. 1, and the operation of the signal processing device is not limited by any one of the signal processing device 110 and the signal processing device 310
According to an embodiment of the present invention, the signal processing device 110/310 may start the device identification and pairing process after detecting the connection with the signal transmission device 200. The signal processing device 110/310 may detect by actively sending a polling signal, passively detecting according to whether a hardware insertion notification signal is received, or may detect whether any signal transmission device is connected thereto by various means such as attempting to perform an access operation on a memory device of the signal transmission device, or performing any detection operation.
In the device identification and pairing process, the processor of the signal processing device 110/310, for example, the processor 111/311 reads the first information from the corresponding memory device 112/312, and reads the second information from the memory device 210 of the signal transmission device 200. The processor 111/311 further determines a threshold date based on the first date and an allowance (margin) indicated by the first information.
According to one embodiment of the invention, the margin is an allowed time difference. For example, the margin may be set to be one month, or a length of a given number of days. The processor 111/311 may push the first date back to an earlier date based on the margin and set that as the threshold date. For example, assuming that the first date indicated by the first information is 2021/02/01 and the margin is set to one month, the processor 111/311 may determine that the critical date is 2021/01/01.
Then, the processor 111/311 may further determine whether the second date indicated by the second information is earlier than the critical date, or whether the second date indicated by the second information is later than or equal to the critical date. According to an embodiment of the present invention, the second date must be later than or equal to the first date before the signal transmission device 200 can be determined as a signal transmission device that is allowed to be used in the signal processing system (which can be understood as determining that the signal transmission device is legitimate in the signal processing system).
In the embodiment of the present invention, the purpose of applying the margin to the first date corresponding to the host device 100 and/or the display device 300 is to improve the flexibility of determining whether the two dates are equal. More specifically, in the embodiment of the present invention, if the second date is different from the first date, but the second date falls within the time interval obtained by adding or subtracting a margin to the first date, the processor 111/311 determines that the second date is the same as the first date. In the previous example, assuming that the margin is set to one month and the first date indicated by the first information is 2021/02/01 at present, which represents that the first date corresponding to the host device 100 and/or the display apparatus 300 is 2021/02/01, the processor 111/311 determines that the second date is the same as the first date as long as the second date falls within the time interval from 2021/01/01 to 2021/03/01.
As described above, in the embodiment of the present invention, the processor 111/311 can determine whether the signal transmission device 200 is a signal transmission device that is allowed to be used in the signal processing system (i.e., can be understood as determining whether the signal transmission device is legal in the signal processing system) by determining whether the second date is later than or equal to the date within the time interval obtained by applying a margin after the first date. If so, the processor 111/311 may control the signal processing apparatus to operate in a normal mode. If not, the processor 111/311 may control the signal processing apparatus to operate in a limited mode.
Thus, in embodiments of the present invention, the processor 111/311 can simply set the earliest date within a time interval determined based on the first date and the margin as the threshold date, such as the date 2021/01/01 in the previous example.
According to an embodiment of the present invention, when the processor 111/311 determines that the second date is earlier than the threshold date, it indicates that the second date is not later than or equal to the first date, and therefore the signal transmission device 200 is determined as not allowed to be used in a signal transmission device in the signal processing system (it can be understood that the signal transmission device is illegal in the signal processing system). At this time, the processor 111/311 controls the corresponding signal processing device 110/310 to operate in a limited mode. In the defined mode, the corresponding signal processing device does not output any signal (e.g., power signal, voltage signal, video signal, audio signal, etc.) to the signal transmission device or will ignore any signal from the signal transmission device. That is, the corresponding signal processing device does not perform the original communication protocol and signal conversion operation in the limited mode, so that the signal transmission device cannot be used in the signal processing system. Or, the corresponding signal processing device can only output a limited signal to the signal transmission device in the limited mode. That is, the corresponding signal processing device only performs the original communication protocol and signal conversion operation on some limited signals in the limited mode. For example, the limit signal may be a low resolution video signal or a signal for transmitting a warning message. In the limited mode, the corresponding signal processing device can only transmit the low-resolution image signal or the warning information to the other end of the signal transmission device through the signal transmission device, so that the signal processing system can display the warning information or the limited low-resolution image signal through the display equipment to inform a user that the signal transmission device is a product which is not allowed to be used by the signal processing system.
On the other hand, when the processor 111/311 determines that the second date is not earlier than the threshold date, it indicates that the second date is later than or equal to the first date, and thus the signal transmission device 200 is determined to be allowed to be used as a signal transmission device in the signal processing system. At this time, the processor 111/311 controls the corresponding signal processing device 110/310 to operate in a normal mode.
Fig. 2 is a flowchart illustrating an identification and pairing method of a signal transmission device according to an embodiment of the invention. The identification and pairing method of the signal transmission device can comprise the following steps:
in step S202, a memory device of a signal processing device in the signal processing system is read to obtain first information. As described above, the signal processing apparatus may be any one of the signal processing apparatus 110 and the signal processing apparatus 310.
In step S204, a memory device of a signal transmission device in the signal processing system is read to obtain the second information. It should be noted that the present invention does not limit the execution sequence of step S202 and step S204, and step S202 and step S204 can be combined into one step.
In step S206, a threshold date is determined according to the first date and an allowance (margin) indicated by the first information.
In step S208, it is determined whether the second date indicated by the second information is earlier than the critical date. If yes, go to step S210. If not, go to step S212.
Step S210, controlling the signal processing device to operate in a limited mode. In the defined mode, the signal processing means does not output any signal to the signal transmission means or ignores any signal from the signal transmission means, or the signal processing means can only output a defined signal to the signal transmission means.
In step S212, the signal processing apparatus is controlled to operate in a normal mode. In the normal mode, the signal processing apparatus may output at least one of a power signal, a control signal, an image signal, a video signal and an audio signal to the signal transmission apparatus 200 and/or may process at least one of a power signal, a control signal, an image signal, a video signal and an audio signal received from the signal transmission apparatus 200. That is, the signal processing apparatus can perform the original communication protocol and signal conversion operation in the normal mode.
According to an embodiment of the present invention, the execution of step S212 also represents that the signal processing system allows the panel device to be lighted. For example, in one embodiment of the present invention, the panel device 321 may be lit after the signal transmission device is correctly installed in the system and the processor of the signal processing device determines that the signal transmission device is a device allowed to be used in the system in the aforementioned device identification and pairing procedure. Since the device identification and pairing process is performed very quickly, the panel device 321 can be lighted immediately after the signal transmission device is determined to be a device allowed to be used, so that the user experience is not affected.
According to an embodiment of the invention, the processor 111/311 may update the first information according to the second information when determining that the second date is not earlier than the critical date. In this updating operation, the processor 111/311 can update the first date and/or the first information corresponding to the signal processing apparatus 110/310 according to the second date corresponding to the signal transmission apparatus 200, so that the first date indicated by the updated first information is the same as the second date. The processor 111/311 further stores the updated first information in the memory device 112/312 instead of the previously recorded first information.
According to an embodiment of the present invention, the first date corresponding to the signal processing apparatus 110/310 (or corresponding to the host apparatus 100 or the display device 300) may be a manufacturing date of the signal processing apparatus 110/310 (or corresponding to the host apparatus 100 or the display device 300), and the second date corresponding to the signal transmission apparatus 200 may be a manufacturing date of the signal transmission apparatus 200. It should be understood that the manufacturing date refers to specific information (e.g., date number, serial number, batch number, etc.) for identifying the time when the signal processing device/signal transmission device is substantially manufactured, and can be expressed by a combination of years/months/weeks/days/hours/minutes/seconds or other general time units, but not limited thereto. Accordingly, the first information originally stored in the signal processing apparatus 110/310 may be set or written in the corresponding memory device when the signal processing apparatus 110/310 (or the host apparatus 100 or the display device 300) is manufactured or shipped, and the second information corresponding to the signal transmission apparatus 200 may also be set or written in the corresponding memory device when the signal transmission apparatus 200 is manufactured or shipped.
In the embodiment of the invention, the first information and the second information can be stored in the corresponding memory devices respectively in different coding modes, reading/writing byte sequences or storage address rules, so as to improve the difficulty of identifying and acquiring the first date and the second date by illegal manufacturers/users. For example, first information indicating a first date may be stored in a binary code (binary code) form in a corresponding memory device, and second information indicating a second date may be stored in a gray code (gray code) form in the corresponding memory device. In particular, after the first information is updated according to the second information, the first date and the second date are substantially the same, but because the first information and the second information can be stored in the corresponding memory devices in different encoding manners, the contents stored in the corresponding memory devices or the contents displayed by the memory devices will be different, thereby preventing an illegal manufacturer/user from easily recognizing the meanings of the first information and the second information.
Since the encoding method is known to the processor of the signal processing apparatus, the processor can perform corresponding decoding operations when reading the first information and the second information, so as to correctly know the first date and the second date.
In addition, in the embodiment of the invention, the number of bits used for storing or recording the first information and the second information can also be higher than a threshold value, so as to provide a better protection effect. For example, the number of bits used to store or record the first information and the second information may exceed 16 bits.
In addition, in the embodiment of the invention, when the first information and the second information are stored or recorded, the processor may also write the first information and the second information into the corresponding memory devices by using different read/write byte sequences (endings). For example, the processor may store the first information in the corresponding memory device in a big-endian (big-endian) manner and store the second information in the corresponding memory device in a little-endian (little-endian) manner.
Under this operation, it is also possible to achieve the effect that the first date is substantially the same as the second date (for example, in the situation that the signal transmission device 200 is allowed to be used or after the first information is updated), but the content stored in the corresponding memory device or the content displayed by the memory device is different. Since the byte sequence is known to the processor of the signal processing apparatus, the processor can read the first information and the second information according to the corresponding byte sequence when reading the first information and the second information, so as to correctly know the first date and the second date.
In addition, when the first information and the second information are stored or recorded, the processor may also use different storage address rules, for example, store the bits corresponding to the first information and the second information in a discontinuous manner. For example, instead of storing all bits of the first information and the second information at contiguous addresses, the processor divides all bits of the first information and the second information into a plurality of portions and selects non-contiguous memory addresses to store bits of each portion according to certain rules. Under this operation, it is also possible to achieve the effect that the first date is substantially the same as the second date (for example, in the situation that the signal transmission device 200 is allowed to be used or after the first information is updated), but the content stored in the corresponding memory device or the content displayed by the memory device is different. Since the selection rule of the memory address is known to the processor of the signal processing apparatus, when the processor reads the first information and the second information, the processor can read the correct address according to the corresponding rule, so as to correctly obtain the bits of each part of the first information and the second information, and restore the content of the first information and the second information according to the obtained bits.
It should be understood that the foregoing embodiments are merely illustrative, and the first date and the second date are substantially the same in the present invention, but the content stored in the corresponding memory device or the content presented by the memory device is not limited thereto.
In summary, the signal transmission device identification and pairing method and the signal processing system implementing the method of the present invention can effectively identify and pair the signal transmission device, so as to prevent the electronic device and the cable/transmission line from being maliciously duplicated by unskilled persons in the market, and maintain the convenience of product production, maintenance and inventory management.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.

Claims (10)

1. A signal processing system, characterized in that the signal processing system comprises:
a signal processing apparatus comprising:
a processor; and
a memory device for storing a first message; and
a signal transmission device coupled to the signal processing device and including a memory device for storing a second information,
wherein in a device identification and pairing process, the processor reads the first information from the memory device of the signal processing device, reads the second information from the memory device of the signal transmission device, determines a critical date according to a first date and a margin (margin) indicated by the first information, and determines whether a second date indicated by the second information is earlier than the critical date,
when the processor judges that the second date is earlier than the critical date, the processor controls the signal processing device to operate in a limited mode,
wherein in the defined mode the signal processing means does not output any signal to the signal transmission means or ignores any signal from the signal transmission means, or the signal processing means outputs only a defined signal to the signal transmission means.
2. The signal processing system of claim 1, wherein when the processor determines that the second date is not earlier than the threshold date, the processor controls the signal processing apparatus to operate in a normal mode and updates the first information according to the second information.
3. The signal processing system of claim 1, wherein the first date is a date of manufacture of the signal processing device, and the second date is a date of manufacture of the signal transmission device.
4. The signal processing system of claim 1, wherein the first information and the second information are stored in different encoding modes, read/write byte orders, or storage address rules, respectively.
5. The signal processing system of claim 1, wherein the signal processing device is a bridge device disposed in a host device or a display apparatus for performing signal conversion on one or more signals provided to or received from the signal transmission device, and the signal transmission device is a cable.
6. A method for identifying and pairing signal transmission devices, the method comprising:
reading a memory device of a signal processing device in a signal processing system to obtain first information;
reading a memory device of a signal transmission device in the signal processing system to obtain second information;
determining a threshold date according to a first date and an allowance (margin) indicated by the first information;
determining whether a second date indicated by the second information is earlier than the critical date; and
controlling the signal processing device to operate in a limited mode when the second date is judged to be earlier than the critical date,
wherein in the defined mode the signal processing means does not output any signal to the signal transmission means or ignores any signal from the signal transmission means, or the signal processing means outputs only a defined signal to the signal transmission means.
7. The signal transmission device identification and pairing method of claim 6, further comprising:
and when the second date is judged to be not earlier than the critical date, controlling the signal processing device to operate in a normal mode and updating the first information according to the second information.
8. The signal transmission device identification and pairing method of claim 6, wherein the first date is a manufacturing date of the signal processing device, and the second date is a manufacturing date of the signal transmission device.
9. The method as claimed in claim 6, wherein the first information and the second information are stored in different encoding modes, reading/writing byte orders or storage address rules, respectively.
10. The method as claimed in claim 6, wherein the signal processing device is a bridge device disposed in a host device or a display device for performing signal conversion on one or more signals provided to or received from the signal transmission device, and the signal transmission device is a cable.
CN202110664972.0A 2021-06-16 2021-06-16 Identification and pairing method for signal processing system and signal transmission device Pending CN115483945A (en)

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CN202110664972.0A CN115483945A (en) 2021-06-16 2021-06-16 Identification and pairing method for signal processing system and signal transmission device

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Application Number Priority Date Filing Date Title
CN202110664972.0A CN115483945A (en) 2021-06-16 2021-06-16 Identification and pairing method for signal processing system and signal transmission device

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