Signal processing circuit
A signal processing circuit and processing circuit technology, applied in signal transmission systems, non-electrical signal transmission systems, instruments, etc., can solve the problems of many component pins, reduce costs, and complex wiring, etc., to reduce pins and reduce costs , the effect of reducing complexity
Inactive Publication Date: 2013-10-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF0 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of this, it is necessary to provide a signal processing circuit, which can realize the common detection pin of the button trigger signal and the infrared remote control signal, so as to solve the technology of many component pins and complicated wiring in the signal processing circuit existing in the prior art. problems, reduce costs
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0014] See figure 2 , is a circuit diagram of a signal processing circuit in a specific embodiment of the present invention. The circuit 20 can be applied to an electronic device with an infrared remote control function and mechanical function keys. The circuit 20 includes an infrared signal processing circuit 21 , a key signal processing circuit 22 and a micro processing unit (MCU) 23 . Wherein, the infrared signal processing circuit 21 includes an infrared receiver 210, and the infrared receiver 210 is arranged in the main body of the electronic device or the display panel (not shown in the figure), and is used to receive an infrared remote control signal sent by a remote controller (not shown in the figure) , in this embodiment, the infrared receiver 210 is an integrated IC.
[0015] The MCU 23 includes a power supply pin VCC2, an infrared signal detect...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A signal processing circuit includes an infrared signal processing circuit, a button signal processing circuit, and an MCU. The infrared signal processing circuit includes an infrared receiver. The button signal processing circuit includes a first button and at least one second button. The MCU includes a power input port, an infrared signal detecting port, and at least one button signal detecting port. A first terminal of the infrared receiver and a first terminal of the first button are connected to the infrared signal detecting port. A first terminal of the at least one second button is connected to the power input port via a first resistor, and further connected to the at least one button signal detecting port, a second terminal of the first button and a second terminal of the at least one second button are grounded. Thus a more effective infrared detector is available.
Description
technical field [0001] The invention relates to a signal processing circuit, in particular to a signal processing circuit capable of realizing a common detection pin for a button trigger signal and an infrared remote control signal. Background technique [0002] Existing portable electronic products, such as mobile DVD (DVD-Portable), electronic book (E-book), etc., are equipped with infrared remote controllers to facilitate user operations. At present, the host of the above-mentioned portable electronic product with an infrared remote control is also equipped with function keys, and the processing of the trigger signal of the mechanical key and the processing of the infrared remote control signal are carried out independently of each other. [0003] See figure 1 , is a circuit diagram of an existing signal processing circuit. The circuit 10 includes a remote control signal processing circuit 11 , a key signal processing circuit 12 and a micro processing unit (MCU) 13 . Th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G08C23/04
CPCG08C23/04
Inventor 孟路青高行嵩
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD