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Circuits, boards, end equipment, and signal controllers that identify device classes
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A signal controller and identification resistance technology, applied in the field of model identification, can solve the problems of complex identification circuits and high identification costs, and achieve the effects of simple lines, reduced identification costs, and fewer components
Active Publication Date: 2017-01-25
HONOR DEVICE CO LTD
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[0006] The embodiment of the present invention provides a circuit, a circuit board, a terminal device and a signal controller for identifying device types, so as to solve the problems of complex identification circuits and high identification costs in the existing identification circuit technology
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Embodiment 1
[0043] The first embodiment of the present invention provides a circuit for identifying the category of a device, which is used to identify a single board or a device that needs to be identified. For a device or a single board that needs to be identified, the embodiment of the present invention needs to weld multiple resistor combinations with different resistance values in series on different boards, so as to identify the type of the device or single board. The embodiment of the present invention takes three identification resistors connected in series as an example, the circuit diagram is as follows figure 2As shown, the circuit includes: a measuring resistor, three identifying resistors connected in series and a signal controller; wherein, one end of the measuring resistor is connected to a power supply, and the other end of the measuring resistor is connected to three identifying resistors connected in series One end of the resistor is connected, and the other end of th...
Embodiment 2
[0077] According to the detailed elaboration of the three identification resistors in the first embodiment, the second embodiment of the present invention provides a circuit for identifying device categories, and specifically describes the use of N identification resistors to identify the circuit, as Figure 8 As shown, the circuit includes:
[0078] Measuring resistance 801, one end of the measuring resistance is connected to the power supply;
[0079] N identifying resistors 802 connected in series, one end of the N identifying resistors connected in series with the other end of the measuring resistor, and the other end of the N identifying resistors connected in series is grounded; N is a natural number greater than 1;
[0080] Signal controller 803, the signal controller includes at least one analog-to-digital detection signal port, at least N-1 general input and output signal ports, wherein one analog-to-digital detection signal port is connected to the measurement resis...
Embodiment 3
[0093] The third embodiment of the present invention also provides a circuit board, including the circuit for identifying the device category as described in any one of the first to second embodiments.
[0094] Wherein, the signal controller is a processor chip on the circuit board.
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Abstract
A circuit for recognizing a device category, a circuit board, a terminal device and a signal controller. The present invention realizes recognition of a device category via a measurement resistor (801), recognition resistors (802) and a signal controller (803). The recognition resistors (802) are connected in series, and resistance values of various recognition resistors connected in series together are determined using an analogue-to-digital detection signal input by an analogue-to-digital detection signal port (AD) in the signal controller (803), a general-purpose input / output signal output by a general-purpose input / output signal port (GPIO) and the measurement resistor (801), so that the device category is recognized. The circuit for recognizing a device category is few in used components, simple in circuits, easy in measurement, so that not only the types of recognized device categories are increased, but also the complexity of the circuit for recognizing a device category is reduced, thereby reducing recognition costs.
Description
technical field [0001] The invention relates to the technical field of model identification, in particular to a circuit, a circuit board, terminal equipment and a signal controller for identifying device types. Background technique [0002] In the current software general-purpose platform development, it is necessary to automatically identify the environment in which the software runs, such as: product type, LCD (Liquid Crystal Display, Liquid Crystal Display) device model, radio frequency band, etc., in order to perform different processing for the hardware during software operation. [0003] At present, when distinguishing boards or device models, multiple resistors with different resistance values are usually welded on different boards, and the corresponding resistance on the board is measured by using the GPIO signal (General Purpose Input Output signal), and then obtained The resistance values of the plurality of different resistors. According to the different resi...
Claims
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