CN1842131A - Projection display equipment signal source searching method - Google Patents
Projection display equipment signal source searching method Download PDFInfo
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- CN1842131A CN1842131A CNA2005100568824A CN200510056882A CN1842131A CN 1842131 A CN1842131 A CN 1842131A CN A2005100568824 A CNA2005100568824 A CN A2005100568824A CN 200510056882 A CN200510056882 A CN 200510056882A CN 1842131 A CN1842131 A CN 1842131A
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Abstract
The invention discloses a method for searching the projection display equipment signal source. The method comprises: the projection display equipment sets the continuous searching sequence to the wireless signal source and the wire signal source; when the projection display equipment detects the signal source is lost, it searches the signal source by the signal source searching sequence; when the projection display equipment quotes the current signal source is effective, if the signal source is effective, it displays the visual signal inputted by the signal source and finishes the searching course; if the signal source is not effective, it feedbacks to the front step and searches the next signal source.
Description
Technical field
The present invention relates to projection display technique, refer to the method for projection display equipment signal source searching especially.
Background technology
Projection display apparatus is a kind of display device commonly used.This equipment provides a plurality of video input interfaces, by the external video signal source of a plurality of interfaces, and selects one tunnel vision signal wherein to be presented on the screen in the mode of projection, thereby realizes that with lower cost large scale, high-quality image show.Fig. 1 is the composition structure chart of projection display apparatus.Whole projection display apparatus is made up of electronic unit 101 and optical unit 102 two parts.Kernel control module 105 controls in the electronic unit are also coordinated operation of entire equipment; Various types of signal sources can be by video input module 103 incoming video signals in the electronic unit 101 to video processing module 104, and 104 pairs of vision signals that receive of video processing module are handled the back and produced modulation intelligence control optical system 102 display images.The video input module 103 that projection display apparatus provides comprises a plurality of video input interfaces, is respectively Video Graphics Array (VGA) interface, Digital Visual Interface (DVI), S-terminal (S-Video) interface, composite video (Composite) interface, component vide (Component) interface etc.Above-mentioned video input module 103 connects different signal sources, and for example: computer, DVD player, video tape recorder etc. are used to receive vision signals such as VGA signal, DVI signal, S-Video signal, composite video signal, component video signal.Video input module 103 is connected with signal sources such as computers by video line, so this class signal source is called the wire signal source.When video input module 103 connects multichannel wired signal source simultaneously, and during with multi-channel video signal input video processing module 104, video processing module 104 can only gating and is received wherein one tunnel vision signal and handle.
After projection display apparatus starts, or after the signal source that is showing stopped to show, projection display apparatus just may be in no show state, in this state, needs to search for effective signal source and shows for projection display apparatus.Kernel control module 105 is all signalization source, wire signal source search queues in advance, and when above-mentioned situation occurring, kernel control module 105 sends the search of control command commencing signal source to video processing module 104.Video processing module 104 is according to the order of search queue gating successively and detect the selected the state of validity that is connected with the line signal source, if there is the signal input in certain wire signal source, shows that this wire signal source is effective.After kernel control module 105 was received the effective information of signal source, control optical unit 102 showed the vision signal of this wire signal source input, and the signal source searching process finishes.
Development along with wireless technology, increasing projection display apparatus provides wireless access as the signal source access way, the user can the wireless transmission vision signal show to projection display apparatus, this mode has been removed the trouble of user for the external video line of projection display apparatus from, makes the use of projection display apparatus more flexible.Projection display apparatus shown in Figure 2 increases wireless module 106 on the basis of the projection display apparatus of Fig. 1, be used to receive the vision signal that radio signal source sends, and to the received wireless video signal of video processing module 104 inputs.Described wireless module 106 also is connected with kernel control module 105 by control signal wire, is used for expanding other application.
After having added wireless module, how being at projection display apparatus does not have search signal source under the state that shows and becomes and need the problem that solves.If radio signal source is added in the signal source searching formation, when the video processing module gating and when detecting the state of validity of radio signal source of wireless module input, because the vision signal that wireless module sends comprises the video standard signal that wireless module self sends, welcome interface that provides such as wireless module etc., and the wireless video signal of wireless module reception, so, even radio signal source is not sent wireless video signal, video processing module also can judge that radio signal source has the signal input, is in effective status according to the video standard signal of wireless module input.Like this, will judge that radio signal source is in effective status during video processing module search radio signal source, and end signal source search procedure, so this method can't normally be carried out and the demonstration that can make the mistake signal source searching.
Take place for fear of above-mentioned situation, in the prior art, kernel control module 105 does not add radio signal source in the signal source searching formation to.In the signal source searching process, video processing module all the time not the gating wireless module the state of validity that carries out radio signal source detect.If the user thinks the wireless video signal of display radio signal source input, need send operational order by input equipments such as remote controllers, make video processing module gating wireless module, and the wireless video signal of display radio module input.
Because existing signal source searching method is only searched for the wire signal source automatically in search procedure, the user has only the wireless video signal by the input of manual operation ability display radio signal source, so this searching method makes troubles for the use of radio signal source, has run counter to the original intention that wireless access is set.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of projection display equipment signal source searching, and projection display apparatus can be searched for all signal sources more conveniently.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method of projection display equipment signal source searching is characterized in that, described projection display apparatus is in advance for radio signal source and wire signal source are provided with continuous search order, and after projection display apparatus detected signal source and loses, this method may further comprise the steps:
A, projection display apparatus are according to signal source searching sequential search signal source;
B, projection display apparatus are judged the validity in current institute search signal source, if signal source effectively then show the vision signal of this signal source input, whole signal source searching process finishes; Return if signal source is invalid step a according to the signal source searching sequential search after a signal source.
Further, the hunting zone in projection display apparatus signalization source is wireless, wired or whole, and wired signal source searching formation is set, and then before the step a, this method further comprises:
A0, projection display apparatus judge the hunting zone of signal source, if for all then execution in step a, if be wired then execution in step c, if be wireless then execution in step e;
C, projection display apparatus select a wire signal source to search in the search queue of wire signal source;
D, projection display apparatus are judged current validity of searching for the wire signal source, if the wire signal source is effective, then show the vision signal of this wire signal source input, and whole signal source searching process finishes, and returns execution in step c if the wire signal source is invalid;
E, projection display apparatus are judged the validity of radio signal source, if radio signal source effectively then show the vision signal of this radio signal source input, whole signal source searching process finishes, after the projection display apparatus hunting zone is set to all if radio signal source is invalid, return execution in step a0.
Further, the method for described judgement radio signal source validity is:
When the wireless module in b1, the projection display apparatus detects the state variation of radio signal source, send the status signal whether the sign radio signal source has signal to kernel control module;
B2, kernel control module receive and preserve the described status signal of step b1, judge the validity of radio signal source by detecting this status signal.
Preferably, described projection display apparatus is provided with timer, and when detecting signal source and lose timer is started timing;
The method of then judging validity among the step b2 is: in the time that timer is set, projection display apparatus detected state signal also judges whether status signal characterizes radio signal source signal is arranged, if judge that then radio signal source is effective, otherwise judge that radio signal source is invalid.
Preferably, projection display apparatus sets in advance the number of searches sum counter in wire signal source, and when detecting signal source and lose with counter reset, then among the above-mentioned steps d, when wired signal source is invalid, this method further comprises: projection display apparatus adds 1 and judge whether Counter Value reaches the number of searches of signal source with Counter Value, if not then return step c and search for, otherwise execution in step a0 is returned after being set to all in the hunting zone.
The search logic that described projection display apparatus sets in advance the wire signal source is sequential search or single search, and the search starting point is set, and projection display apparatus selects the search starting point to search among the step c;
Before then returning execution in step c in the steps d, this method further comprises:
D1, kernel control module judge the search logic in wire signal source, if be sequential search then execution in step d2, if be single search then execution in step d3;
A back signal source in d2, the current institute of kernel control module search signal source is set to the search starting point, and returns execution in step c;
D3, the current institute of kernel control module search signal source are set to the search starting point, and return execution in step c.
Preferably, the described method of judging wire signal source validity specifically: projection display apparatus gating wire signal source also judges whether the wire signal source has signal, if signal is arranged then this wire signal source is effective, otherwise this wire signal source is invalid.
Further, when projection display apparatus receives the instruction in search individual signals source, carry out following steps:
F1, kernel control module are judged type of signal source, if wireless then execution in step f2, if wired then execution in step f3;
F2, kernel control module hunting zone are set to wireless, and the instruction process process finishes;
F3, kernel control module hunting zone are set to wireless, and search logic is set to single search, the signal source of appointment during the search starting point is set to instruct simultaneously, the end of instruction process process.
Further, when projection display apparatus receives the instruction that the hunting zone is set, carry out following steps:
G1, kernel control module judge the current state of projection display apparatus according to Status Flag, if be search condition then execution in step g2, if be show state then execution in step g3;
The hunting zone of appointment during g2, kernel control module hunting zone are set to instruct, the instruction process process finishes;
The hunting zone of appointment during g3, kernel control module hunting zone are set to instruct, and trigger projection display apparatus and carry out signal source searching, the instruction process process finishes.
Preferably, the method for the continuous search order in described signalization source is: projection display apparatus inserts the search radio signal source arbitrarily in the search queue of set wire signal source.
As seen from the above technical solution, sort signal source searching method of the present invention is that signal source searching is provided with the hunting zone, makes projection display apparatus search for all signal sources automatically in search procedure, and need not user's manual operation.
Further, in the signal source searching process, when the hunting zone is set to when whole, projection display apparatus first search radio signal source, and after having searched for a wire signal source, search for radio signal source once more, strengthen the search rate of radio signal source, thereby guarantee that radio signal source is easier to use.
In addition, this method allows the user that search parameter is set, thereby embodies user's request in the search procedure of signal source, makes the signal source searching process have controllability.
Description of drawings
Fig. 1 is the composition structure chart of projection display apparatus in the prior art;
Fig. 2 is the composition structure chart of another kind of projection display apparatus in the prior art;
Fig. 3 carries out the flow chart of signal source searching automatically for projection display apparatus in a preferred embodiment of the present invention;
The handling process of projection display apparatus when Fig. 4 only searches for the individual signals source for user in a preferred embodiment of the present invention sets;
The handling process of projection display apparatus when Fig. 5 only searches for the wire signal source for user in a preferred embodiment of the present invention sets;
The handling process of projection display apparatus when Fig. 6 only searches for radio signal source for user in a preferred embodiment of the present invention sets.
Embodiment
Core concept of the present invention is: projection display apparatus is provided with continuous search order for radio signal source and wire signal source in advance, and after projection display apparatus detected signal source and loses, projection display apparatus was according to signal source searching sequential search signal source; Projection display apparatus is judged the validity in current institute search signal source, if signal source is effectively then show the vision signal of this signal source input, whole signal source searching process finishes, if signal source is invalid according to signal source behind the signal source searching sequential search.
Above-mentioned searching method is realized the continuous search in radio signal source and wire signal source in the signal source searching process.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Projection display apparatus can comprise radio signal source and wire signal source directly to all signal sources, searches for continuously; Also can set in advance the hunting zone of signal source.The hunting zone is meant in the signal source searching process, projection display apparatus to which signal source is searched for.Projection display apparatus can be according to the hunting zone of signal source classification setting correspondence.Such as: because signal source is divided into radio signal source and wire signal source two big classes according to different connected modes, so wireless (Wireless), wired (Wired) and whole (All) these three kinds of hunting zones are set, and the hunting zone is All by default setting, and promptly projection display apparatus is searched for continuously to all signal sources under the default situations.
Because having the hunting zone is the situation of Wired, so projection display apparatus is provided with the search queue of wired signal source.For certain the wire signal source in the search queue, the signal source that will be positioned at its front is called previous signal source, and the signal source that is positioned at its back is called a back signal source.When the hunting zone was All, projection display apparatus was that radio signal source and wire signal source are provided with continuous search order, and this search order is comparatively various.Because projection display apparatus only connects a radio signal source, so the search that can insert this radio signal source arbitrarily in the search queue in wire signal source forms continuous search order.In the present embodiment, insert radio signal source of search in the search queue that this continuous search order is the wire signal source between per two wire signal sources.
Projection display apparatus can also set in advance search parameters such as search logic, search starting point.
Search logic is meant that projection display apparatus is searched in which way in the signal source searching process.The search logic of signal source can be set to: all signal sources in the hunting zone are searched in order one by one, abbreviate sequential search as; Perhaps only search for a single signal source, abbreviate single search as.When hunting zone when being wired, because projection display apparatus can connect a plurality of wire signals source, so the search logic of projection display apparatus can be set to sequential search or single search, and search logic is a sequential search by default setting.When hunting zone when being wireless, because projection display apparatus only connects a radio signal source, no matter search logic is set to sequential search or single search, projection display apparatus all is searched for a radio signal source.
The search starting point is meant projection display apparatus at first to which wire signal source is searched for.When hunting zone when being wired or whole, projection display apparatus any wire signal source in can search queue is set to the search starting point.
When projection display apparatus is initially started shooting, or projection display apparatus is when being in no show state, perhaps projection display apparatus is current is in show state and user key-press sends signal source searching when instruction, kernel control module 105 detects signal source and loses, trigger projection display apparatus and carry out signal source searching, and the Status Flag of projection display apparatus is changed to 1, and showing the current signal source searching state that is in of projection display apparatus, Fig. 3 is the flow chart of the described signal source searching of present embodiment.
Step 301: kernel control module is judged the hunting zone of projection display apparatus and is searched for the interior signal source of corresponding scope, if the hunting zone is wireless then execution in step 302; If the hunting zone is wired then execution in step 305; If the hunting zone is for all then execution in step 311.
Step 302: kernel control module judges whether radio signal source is effective, if effectively then execution in step 303, if invalid then execution in step 304.
As shown in Figure 2, connect a control signal wire between wireless module and the kernel control module.In the present embodiment, wireless module sends status signal by described control signal alignment kernel control module, and detailed process is as follows:
1, when wireless display begins, radio signal source is sent wireless video signal to wireless module.
2, wireless module detects the vision signal of radio signal source input, sends by control signal wire and characterizes the effective status signal of radio signal source to kernel control module, and said process finishes.
Perhaps, when wireless display finished, wireless module can't detect the vision signal of radio signal source input, just sent to characterize the invalid status signal of radio signal source to kernel control module.
Suppose that status signal is to represent that radio signal source was invalid at 0 o'clock, status signal is to represent that radio signal source was effective at 1 o'clock.Kernel control module is preserved received status signal, and judges the value of status signal, if status signal be 1 then show that radio signal source is effective, if status signal is 0 then shows that radio signal source is invalid.
Further, kernel control module can be provided with timer.After kernel control module detects signal source and loses in the step 301, with set timer clear 0.In the time that timer is set, be 1 if kernel control module detects status signal, judge that radio signal source is effective; If status signal is always 0, judge that then radio signal source is invalid.
In the practical application, have only when the signal input state of radio signal source changes, be that wireless module detects wireless video signal and grows out of nothing, when perhaps wireless video signal was from having to do not having, wireless module just can send status signal to kernel control module by control signal wire.
In the prior art, because wireless module is and the shared video data path of other video input interface, video processing module switches between wireless module and a plurality of video input interface by switch, so whether video processing module has the wireless video signal input if will know wireless module, need come the gating wireless module by diverter switch.In the present embodiment, kernel control module is directly known the validity of radio signal source by read state signal, thereby avoids physics to switch, and is more convenient quick.
Step 303: video processing module gating wireless module, and receive the vision signal that wireless module is imported, and showing by optical unit that after treatment the kernel control module hunting zone is set to default value simultaneously, the signal source searching process finishes.
Step 304: the kernel control module hunting zone is set to default value, returns execution in step 301 then.
Step 305: the video input interface of kernel control module control of video processing module gating search starting point correspondence.
Step 306: video processing module judges whether the wire signal source is effective, if effectively then execution in step 307, otherwise execution in step 308.
Above-mentionedly judge that wire signal source effective method is: whether the video input interface that video processing module detects institute's gating has signal, if signal is arranged then wire signal source that this video input interface connects is effective, otherwise invalid.
Step 307: video processing module receives the selected intervisibility vision signal of input interface frequently, and shows this vision signal by optical unit, and the kernel control module hunting zone is set to default value simultaneously, and the signal source searching process finishes.
Step 308: kernel control module judges whether the wire signal source is searched for and finishes, if search finishes then execution in step 310, otherwise execution in step 309.
In the present embodiment, kernel control module is provided with counter and sets the number of searches of wired signal source.In the step 301, kernel control module detects signal source lose after, with set counter reset, then step 308 is described judges whether the wire signal source is searched for the method that finishes and be: after kernel control module adds 1 with Counter Value, judge whether Counter Value reaches the number of searches of setting, if reach then judge that wire signal source search finishes execution in step 310, otherwise execution in step 309.Projection display apparatus can be by being provided with the repeatedly search of number of searches realization to same signal source.Such as: equipment has 5 wire signal sources, is 10 if number of searches is set, and then each wire signal source can be searched twice.
Step 309: kernel control module is provided with wire signal source to be searched, and the video input interface of this wire signal source correspondence of control of video processing module gating, returns execution in step 306 then.
In this step, kernel control module is provided with wire signal source to be searched according to search logic, if search logic is set to sequential search, then the back signal source of kernel control module is set to signal source to be searched; If search logic is set to single search, then the signal source of handling in the kernel control module step 306 is set to signal source to be searched.
Step 310: the kernel control module hunting zone is set to default value, returns execution in step 301 then.
Step 311: kernel control module judges whether radio signal source is effective, if effectively then execution in step 312, if invalid then execution in step 313.
Step 312: video processing module gating wireless module, and receive the vision signal that wireless module is imported, and showing by optical unit that after treatment the kernel control module hunting zone is set to default value simultaneously, the signal source searching process finishes.
This step is identical with step 303, repeats no more herein.
Step 313: the determine video input interface of control of video processing module gating search starting point correspondence of core control mould.
This step is identical with step 305, repeats no more herein.
Step 314: video processing module judges whether the wire signal source is effective, if effectively then execution in step 316, otherwise execution in step 315.
Step 315: a back signal source in the described wire signal of kernel control module step 314 source is set to the search starting point, returns execution in step 301 then.
Step 316: the video input interface receiving video signals of video processing module gating from step 313, and show this vision signal by optical unit, and the kernel control module hunting zone is set to default value simultaneously, and the signal source searching process finishes.
This step is similar to step 307, repeats no more herein.
From above-mentioned steps 311～step 316 as can be seen, when projection display apparatus is in the signal source searching state, and when the hunting zone is set to ALL, every search finishes a wire signal source, projection display apparatus will be searched for radio signal source one time, this searching method makes radio signal source have higher priority in the signal source searching process, thus easier to be found, thus the i.e. throwing that is implemented in radio signal source under the device free situation promptly shows.
In step 303, step 307, step 312 and step 316, projection display apparatus is after searching the useful signal source and showing, all the hunting zone is set to default value ALL, so that projection display apparatus is when carrying out next time signal source searching, the hunting zone of its acquiescence is default value ALL.Projection display apparatus also can be after searching the useful signal source and showing, the hunting zone is not set to default value ALL.
In addition, before showing effective vision signal, projection display apparatus can show information such as " searching signal source " to the user by OSD, shows that signal source searching finishes.Perhaps in the radio signal source search procedure, show information such as " waiting in the wireless display " to the user.
The described signal source searching method of present embodiment can be searched for all signal sources of projection display apparatus automatically according to search parameters such as hunting zone, search logic, search starting points, so this searching method is convenient and swift.
Search parameter in the described search procedure of Fig. 3 can be set in advance by projection display apparatus, also can be by the user by input equipment settings such as remote controllers.Projection display apparatus sets in advance the OSD menu, and the user can select the option in the OSD menu that search parameter is set by input equipments such as remote controllers, realizes the control to the signal source searching process.
When search parameter was set, the user can select only to search for the individual signals source.When the user only requires to search for the individual signals source, kernel control module is judged current state according to the Status Flag of projection display apparatus, when Status Flag is 1, show that projection display apparatus is in the signal source searching state, the handling process of projection display apparatus may further comprise the steps as shown in Figure 4 at this moment:
When search parameter is set, the hunting zone that the user can also the signalization source, thus control the switching of wire/wireless signal source searching easily.
In the practical application, " wired " and " wireless " button is set on the input equipments such as remote controller.When the user presses " wired " key, show that the user sets only to search for the wire signal source that the handling process of projection display apparatus may further comprise the steps as shown in Figure 5:
When Status Flag is 1, show that projection display apparatus is in the signal source searching state; Status Flag is 0 o'clock, shows that projection display apparatus is in show state.
The signal source type of step 503, the current demonstration of kernel control module judgment device, if the current demonstration of equipment is radio signal source, execution in step 504, if the current demonstration of equipment is the wire signal source, execution in step 505.
Described last effectively wire signal source is meant the wire signal source that was in effective status before the display radio signal source.
When the user presses " wireless " key, show that the user sets only to search for radio signal source that the handling process of projection display apparatus may further comprise the steps as shown in Figure 6:
Step 601, kernel control module are judged the current state of projection display apparatus, if equipment is in the signal source searching state, and execution in step 602; If equipment is in show state, execution in step 603.
Step 602, kernel control module hunting zone are set to wireless, and timer is clear 0, and the processing procedure of this user key-press finishes.
Step 603～604, kernel control module hunting zone are set to wireless.After finishing above-mentioned the setting, kernel control module triggers projection display apparatus and enters signal source searching flow process shown in Figure 3, and the processing procedure of this user key-press finishes.
When search parameter is set, the previous or back signal source that the user can the current institute of setting search search signal source.
In the practical application, " left side " and " right side " these two buttons are set on the input equipments such as remote controller, " left side " key correspondence be the previous signal source in current institute search signal source, " right side " key correspondence be a back signal source in current institute search signal source.The user can pass through button, realizes the manual selection to want search signal source.When the user pressed " right side " key, kernel control module was judged current state according to the Status Flag of projection display apparatus, when Status Flag is 1, shows that projection display apparatus is in the signal source searching state, and this moment, the handling process of projection display apparatus was as follows:
1, kernel control module is judged the hunting zone of signal source, if wirelessly then do not carry out any setting, the processing procedure of this user key-press finishes; If wired, then execution in step 2; If whole execution in step 3 then.
2, a back signal source in the current institute of kernel control module search signal source is set to signal source to be searched, and the processing procedure of this user key-press finishes.
3, kernel control module is judged the current search type of signal source, if wirelessly then do not carry out any setting, the processing procedure of this user key-press finishes; If wired, a back signal source in current institute search signal source is set to signal source to be searched, and the processing procedure of this user key-press finishes.
When the user pressed " left side " key, its handling process and said process were similar, repeat no more herein.
From the described processing procedure of Fig. 4～Fig. 6 as can be seen, the described signal source searching method of present embodiment allows the user by search parameters such as input equipment setting search scope, search logic, search starting point such as remote controllers, projection display apparatus can be carried out alternately with the user better, and make projection display apparatus carry out signal source searching, thereby make search procedure more embody user's request according to the search parameter that the user is provided with.
By the above embodiments as seen, the method of this projection display equipment signal source searching of the present invention is by being provided with the hunting zone for signal source searching, make projection display apparatus in search procedure, search for all signal sources automatically, and projection display apparatus can be searched for radio signal source earlier, and after having searched for a wire signal source, search for radio signal source again, strengthen the search rate of radio signal source, thereby guarantee that radio signal source is easier to use.In addition, this method can be carried out signal source searching according to the search parameter that the user is provided with, thereby makes search procedure more embody user's request.
Claims (10)
1, a kind of method of projection display equipment signal source searching, it is characterized in that, described projection display apparatus is in advance for radio signal source and wire signal source are provided with continuous search order, and after projection display apparatus detected signal source and loses, this method may further comprise the steps:
A, projection display apparatus are according to signal source searching sequential search signal source;
B, projection display apparatus are judged the validity in current institute search signal source, if signal source effectively then show the vision signal of this signal source input, whole signal source searching process finishes; Return if signal source is invalid step a according to the signal source searching sequential search after a signal source.
2, method according to claim 1 is characterized in that, the hunting zone in projection display apparatus signalization source is wireless, wired or whole, and wired signal source searching formation is set, and then before the step a, this method further comprises:
A0, projection display apparatus judge the hunting zone of signal source, if for all then execution in step a, if be wired then execution in step c, if be wireless then execution in step e;
C, projection display apparatus select a wire signal source to search in the search queue of wire signal source;
D, projection display apparatus are judged current validity of searching for the wire signal source, if the wire signal source is effective, then show the vision signal of this wire signal source input, and whole signal source searching process finishes, and returns execution in step c if the wire signal source is invalid;
E, projection display apparatus are judged the validity of radio signal source, if radio signal source effectively then show the vision signal of this radio signal source input, whole signal source searching process finishes, after the projection display apparatus hunting zone is set to all if radio signal source is invalid, return execution in step a0.
3, method according to claim 1 and 2 is characterized in that, the method for described judgement radio signal source validity is:
When the wireless module in b1, the projection display apparatus detects the state variation of radio signal source, send the status signal whether the sign radio signal source has signal to kernel control module;
B2, kernel control module receive and preserve the described status signal of step b1, judge the validity of radio signal source by detecting this status signal.
4, method according to claim 3 is characterized in that, described projection display apparatus is provided with timer, and when detecting signal source and lose timer is started timing;
The method of then judging validity among the step b2 is: in the time that timer is set, projection display apparatus detected state signal also judges whether status signal characterizes radio signal source signal is arranged, if judge that then radio signal source is effective, otherwise judge that radio signal source is invalid.
5, method according to claim 2, it is characterized in that, projection display apparatus sets in advance the number of searches sum counter in wire signal source, and when detecting signal source and lose with counter reset, then among the above-mentioned steps d, when wired signal source is invalid, this method further comprises: projection display apparatus adds 1 and judge whether Counter Value reaches the number of searches of signal source with Counter Value, if not then return step c and search for, otherwise execution in step a0 is returned after being set to all in the hunting zone.
According to claim 2 or 5 described methods, it is characterized in that 6, the search logic that projection display apparatus sets in advance the wire signal source is sequential search or single search, and the search starting point is set, projection display apparatus selects the search starting point to search among the step c;
Before then returning execution in step c in the steps d, this method further comprises:
D1, kernel control module judge the search logic in wire signal source, if be sequential search then execution in step d2, if be single search then execution in step d3;
A back signal source in d2, the current institute of kernel control module search signal source is set to the search starting point, and returns execution in step c;
D3, the current institute of kernel control module search signal source are set to the search starting point, and return execution in step c.
7, method according to claim 1 and 2, it is characterized in that, the described method of judging wire signal source validity is specifically: projection display apparatus gating wire signal source also judges whether the wire signal source has signal, if signal is arranged then this wire signal source is effective, otherwise this wire signal source is invalid.
8, method according to claim 2 is characterized in that, when projection display apparatus receives the instruction in search individual signals source, carries out following steps:
F1, kernel control module are judged type of signal source, if wireless then execution in step f2, if wired then execution in step f3;
F2, kernel control module hunting zone are set to wireless, and the instruction process process finishes;
F3, kernel control module hunting zone are set to wireless, and search logic is set to single search, the signal source of appointment during the search starting point is set to instruct simultaneously, the end of instruction process process.
9, method according to claim 2 is characterized in that, when projection display apparatus receives the instruction that the hunting zone is set, carries out following steps:
G1, kernel control module judge the current state of projection display apparatus according to Status Flag, if be search condition then execution in step g2, if be show state then execution in step g3;
The hunting zone of appointment during g2, kernel control module hunting zone are set to instruct, the instruction process process finishes;
The hunting zone of appointment during g3, kernel control module hunting zone are set to instruct, and trigger projection display apparatus and carry out signal source searching, the instruction process process finishes.
10, method according to claim 2 is characterized in that, the method for the continuous search order in described signalization source is: projection display apparatus inserts the search radio signal source arbitrarily in the search queue of set wire signal source.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394526B (en) * | 2007-09-21 | 2011-01-05 | 鸿富锦精密工业（深圳）有限公司 | Video signal searching method for a projection device and the projection device thereof |
| CN105812916A (en) * | 2014-12-30 | 2016-07-27 | 深圳Tcl数字技术有限公司 | Method, device and system for switching information sources |
| CN105848191A (en) * | 2015-01-30 | 2016-08-10 | 佳能株式会社 | Communication apparatus and control method |
| CN111526347A (en) * | 2018-12-17 | 2020-08-11 | 卡西欧计算机株式会社 | Signal detection device, signal detection method, and storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5161023A (en) * | 1990-09-24 | 1992-11-03 | Thomson Consumer Electronics, Inc. | Previous channel feature in a television receiver having multiple rf inputs |
| KR970078629A (en) * | 1996-05-28 | 1997-12-12 | 이형도 | Digital Satellite Video Receiver with Multi-Channel Simultaneous Search |
| KR100574471B1 (en) * | 2003-09-15 | 2006-04-27 | 삼성전자주식회사 | Tuner capable of receiving analog and digital broadcasting siginal and integated DTV having the tuner, and a broadcasting siginal receiving method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394526B (en) * | 2007-09-21 | 2011-01-05 | 鸿富锦精密工业（深圳）有限公司 | Video signal searching method for a projection device and the projection device thereof |
| CN105812916A (en) * | 2014-12-30 | 2016-07-27 | 深圳Tcl数字技术有限公司 | Method, device and system for switching information sources |
| CN105848191A (en) * | 2015-01-30 | 2016-08-10 | 佳能株式会社 | Communication apparatus and control method |
| CN111526347A (en) * | 2018-12-17 | 2020-08-11 | 卡西欧计算机株式会社 | Signal detection device, signal detection method, and storage medium |
| CN111526347B (en) * | 2018-12-17 | 2022-01-21 | 卡西欧计算机株式会社 | Signal detection device, signal detection method, and storage medium |
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| CN100389594C (en) | 2008-05-21 |
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