On-off control method for dual-power triple-CPU projector
A technology of switch control and projector, which is applied to optics, instruments, projection devices, etc., to achieve the effect of improving the degree of intelligence
Inactive Publication Date: 2011-05-11
SICHUAN CHANGHONG ELECTRIC CO LTD
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Problems solved by technology
[0003] At this time, if you use the projector, you must turn on the projector and the signal source separately according to the startup steps. However, for some specific occasions such as teaching projectors, the positions of the projector and the signal source are relatively fixed. It is hoped that the projector can be turned on as long as the signal source is turned on. There is no need to start it manually, which is convenient for users and reduces user operations. At present, there is no control method for turning on and off the projector, which automatically detects the signal source and automatically turns on and off the projector system.
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[0010] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0011] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0012] Such as figure 1 A switch control method for a projector with dual power supplies and three CPUs is shown, including: a standby CPU, which is used to manage the standby power supply and the main power supply to reduce standby power consumption, and can accept the start-up command to control the system to start; the standby power supply provides the standby CPU to work Power supply; the main CPU of the system controls the normal operati...
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The invention discloses an on-off control method for a dual-power triple-CPU projector, which includes a standby CPU, a standby power supply, a system main CPU, a system main power supply and also includes a signal processing CPU; the signal processing CPU is used for realizing automatic starting function; the GPIO port of the signal processing CPU is connected with an infrared remote control receiver module for simulating a starting remote control instruction and sending the starting instruction to the remote control receiver module, the signal processing CPU continuously detects the synchronization field line of the input signal, if an input signal is detected, the system automatic starting function is executed, namely the signal processing CPU simulates the remote control starting instruction and sends the starting instruction to the standby CPU through the GPIO port, and the standby CPU starts the system main power supply. The invention also proposes a mode that the projector adopts the signal processing CPU to detect if synchronization field line of the input signal exists under standby state, and determines whether starting the projector according to if the input signal exists, and accordingly improves the intelligent degree of the projector.
Description
technical field [0001] The invention relates to the field of on / off control of projectors, in particular to a method for controlling on / off of a projector with dual power sources and three CPUs. Background technique [0002] With the development of digital processing technology, the performance of the projector has also been developed rapidly, but generally speaking, the high performance of the projector will inevitably lead to high power consumption. In order to reduce power consumption and improve efficiency, the projector system uses two sets of power supplies, one set of standby power supply and one set of main power supply. To manage standby power and main power, the projector system uses a standby CPU. When the system is not connected to AC power, neither the standby CPU nor the system main CPU works. After the AC power is connected, the standby CPU is powered on and starts to work, the main CPU of the system does not work, and the system enters the standby state. A...
Claims
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IPC IPC(8): G03B21/14
Inventor 胥立朱晓东毛奎章郑雷陈冠霖罗莉
Owner SICHUAN CHANGHONG ELECTRIC CO LTD