CN103024513A - Method for quickly changing channels of digital television - Google Patents
Method for quickly changing channels of digital television Download PDFInfo
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- CN103024513A CN103024513A CN2012105569151A CN201210556915A CN103024513A CN 103024513 A CN103024513 A CN 103024513A CN 2012105569151 A CN2012105569151 A CN 2012105569151A CN 201210556915 A CN201210556915 A CN 201210556915A CN 103024513 A CN103024513 A CN 103024513A
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Abstract
The invention discloses a method for quickly changing channels of a digital television. The method comprises the following steps of establishing a finite state machine model in advance; defining the state of a DTV (Digital Television) receiving terminal control unit by means of enumeration variables; prestoring a state transition table comprising the state of the DTV receiving terminal control unit, and the states of input events and output control signals; receiving the input events triggered by users; looking up the prestored state transition table according to the current states of the input events triggered by the users and the DTV receiving terminal control unit; switching to a new state, and generating the output control signals; and driving an OSD (On-Screen Display) area to update in real time when the users push buttons, and starting a channel changing control circuit after the users push the buttons for over time. According to the method disclosed by the embodiment of the invention, the user experience can be improved.
Description
Technical field
The present invention relates to electronic technology field, refer more particularly to a kind of method that realizes Digital Television fast channel switching on the single task system.
Background technology
When Digital Television is carried out switching channels (changing platform) operation, because DTV(DTV, Digital Television, Digital Television) receiving terminal apparatus must be through complicated data handling procedure, such as tuning (tune), demodulation (demodulation), transmission flow demultiplexing (demux), audio/video decoding (decode), digital-to-analogue conversion (DAC) etc., could broadcast audio/video program, cause DTV and traditional ATV(ATV, Analog Television, simulated television) compares, change platform speed and want slow many.The user is when changing platform, although can directly select channel by pressing the combination of corresponding numerical key, the user tends to use " channel+" or " channel-" more, and TV is transferred to the channel that oneself hope is watched.Referring to Fig. 1, it is the DTV screen display schematic diagram of prior art, when changing platform, the upper right corner of screen and the lower zone of screen are OSD(OSD, On-Screen Display, on-screen menu shows) zone, the upper right corner generally identifies the channel of current program, except channel, topmost content is current channel designation on the channel bar of below.Mid portion is video display area, and program content playing when changing platform, is generally blank screen or quiet frame (the last frame video image that keeps old channel program).Present single task system, when the user presses " channel+" or " channel-" key of remote controller, will trigger and once change platform, because the technical reason of preamble, system need to just can finish and change the platform action the long time, especially press continuously " channel+" or " channel-" intention when changing platform continuously as the user, can find that system terminal occurs significantly sluggish, some system can wait for consuming time changing after the platform action all finishes, until just respond user's again button when seeing new video, and some system can be after a part of changing the platform action be finished, as end frequency locking and move, response user's again button, but the user feels that still response is sluggish, and the user experiences just poor.
Summary of the invention
For solving the problems of the technologies described above, the object of the invention is to, a kind of method of Digital Television fast channel switching is provided, be specially adapted on the single task system, the response that occurs in the time of can avoiding user's continuous key-press is sluggish, promotes the user and experiences.
A kind of Digital Television fast channel switching method that the embodiment of the invention provides comprises:
Set up in advance finite state machine model, use the state of enumerated variable definition DTV receiving terminal control unit, pre-stored comprises the state transition table of state, incoming event and the output control signal of described DTV receiving terminal control unit;
Receive the incoming event that the user triggers;
According to the incoming event of described user's triggering and the current state of described DTV receiving terminal control unit, check the state transition table of described pre-stored, switch to new state, and produce the output control signal, drive the OSD zone along with user key-press real-time update and change the platform control circuit in the overtime rear startup of user key-press.
Selectable, the state of described DTV receiving terminal control unit comprises idle condition and busy condition, incoming event comprises behind user key-press and the user key-press overtime, and described output control signal comprises Timer Controlling signal, OSD control signal and changes the platform circuit control signal; Described state machine model comprises:
When if the state of DTV receiving terminal control unit is idle condition, when receiving user key-press, the output timer control signal starts timer, and the channel that output OSD control signal is upgraded the OSD zone shows, and the state of DTV receiving terminal control unit is switched to busy condition;
When if the state of DTV receiving terminal control unit is busy condition, in the timer expiry time T, when receiving user key-press, the output timer control signal is restarted timer, and the channel that output OSD control signal is upgraded the OSD zone shows; If the state of DTV receiving terminal control unit is busy condition, timer reaches time-out time T, the timeing closing device, and output is changed the startup of platform circuit control signal and is changed the platform action, and the state of DTV receiving terminal control unit is switched to idle condition.
Optionally, the scope of described timer expiry time T is 120 milliseconds to 200 milliseconds.
Implement the embodiment of the invention, when DTV receiving terminal control unit is idle condition, when receiving user key-press, start timer, the channel that upgrades the OSD zone shows; Be busy condition at DTV receiving terminal control unit, receive user key-press, restart timer, and upgrade the channel demonstration in OSD zone, only when timer reaches time-out time T, just start the platform that changes consuming time and move, the response that occurs in the time of can avoiding user's continuous key-press is sluggish, and indicated channel upgrades in real time, when being transferred to user's purpose channel, stop key, wait to be changed action to finish, promoted user's experience.
Description of drawings
Fig. 1 is that the digital TV screen that prior art and the present invention adopt shows schematic diagram;
Fig. 2 is the flow chart of an embodiment of the method for a kind of Digital Television fast channel switching provided by the invention;
Fig. 3 is the state transition graph of the finite state machine among Fig. 2 embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to Fig. 2, it is the flow chart of an embodiment of the method for a kind of Digital Television fast channel switching provided by the invention.
A kind of Digital Television fast channel switching method that the present embodiment provides comprises:
Set up in advance finite state machine model, use the state of enumerated variable definition DTV receiving terminal control unit, pre-stored comprises the state transition table of state, incoming event and the output control signal of described DTV receiving terminal control unit;
Receive the incoming event that the user triggers;
According to the incoming event of described user's triggering and the current state of described DTV receiving terminal control unit, check the state transition table of described pre-stored, switch to new state, and produce the output control signal, drive the OSD zone along with user key-press real-time update and change the platform control circuit in the overtime rear startup of user key-press.
Preferably, the state of described DTV receiving terminal control unit comprises idle condition and busy condition, incoming event comprises behind user key-press and the user key-press overtime, and described output control signal comprises Timer Controlling signal, OSD control signal and changes the platform circuit control signal; Described state machine model comprises:
When if the state of DTV receiving terminal control unit is idle condition, when receiving user key-press, the output timer control signal starts timer, and the channel that output OSD control signal is upgraded the OSD zone shows, and the state of DTV receiving terminal control unit is switched to busy condition;
When if the state of DTV receiving terminal control unit is busy condition, in the timer expiry time T, when receiving user key-press, the output timer control signal is restarted timer, and the channel that output OSD control signal is upgraded the OSD zone shows; If the state of DTV receiving terminal control unit is busy condition, timer reaches time-out time T, the timeing closing device, and output is changed the startup of platform circuit control signal and is changed the platform action, and the state of DTV receiving terminal control unit is switched to idle condition.
Following table is the state transition table of the finite state machine that provides of the present embodiment:
Referring to Fig. 3, it is the state transition graph of finite state machine in the embodiment of the invention.The state of DTV receiving terminal control unit comprises idle condition and busy condition, and such as Fig. 3, idle condition is designated as 01 attitude, and busy condition is designated as 10 attitudes.The user presses the button of modulator, such as " channel+" or " channel-", and definition incoming event I fetch logic value 1, overtime after the user does not have button or user key-press, incoming event I fetch logic value 0.The output control signal comprises Timer Controlling signal X, OSD control signal Y and changes platform circuit control signal Z, definition Timer Controlling signal X fetch logic was worth timer restart, the timing of namely starting from scratch at 1 o'clock, when Timer Controlling signal X fetch logic was worth 0, timer cut out.Definition OSD control signal Y fetch logic was worth 1 o'clock, upgraded the channel demonstration in OSD zone according to user key-press, and when OSD control signal Y value 0, the demonstration in OSD zone remains unchanged.When platform circuit control signal Z value 1 was changed in definition, output was changed the platform circuit control signal and is moved to start the platform that changes consuming time, when changing platform circuit control signal value 0, did not start and changed the platform action.
In conjunction with Fig. 3, the workflow of the method for a kind of Digital Television fast channel switching that the embodiment of the invention provides is described.
(1), establishes DTV receiving terminal control unit and be initially idle condition 01, the digital television program normal play.When the user presses " channel+" or " channel-", namely the I value is 1, and at this moment DTV receiving terminal control unit state is converted to busy condition 10.X is output as 1, starts timer, from zero timing.Y is output as 1, and the channel that upgrades the OSD zone according to user key-press shows.Z is output as 0, and the unactual startup platform that changes consuming time moves.When DTV receiving terminal control unit state was busy condition 10 attitude, one of the following step (2) or step (3) may occur.
(2), reach between the time-out time T at timer, the user continues button, and the I value is 1.X is output as 1, restarts timer, the timing of starting from scratch.The Y value is 1, and the channel that upgrades the OSD zone shows.Z is output as 0, also is not activated the platform that changes consuming time and moves.It is constant that the state of DTV receiving terminal control unit is kept 10 attitudes.After (2) step, may repeat generation step (2) or generation step (3).The scope of timer expiry time T is 120 milliseconds to 200 milliseconds, setting about the timer expiry time T, come from the interval design of remote controller continuous key-press, the interval that is near or below 100ms may the user be identified not out, and the interval that surpasses 200ms can make the audio frequency and video time out instead lengthen, and diminishes on the contrary the user and experiences.
(3), when timer reaches time-out time T, the user does not have key-press input, the I value is that 0, X is output as 0, the timeing closing device.The channel demonstration that Y is output as 0, OSD zone remains unchanged.Z is output as 1, changes the platform circuit and begins to start and change the platform action, and after the of short duration wait of user, video plays back at curtain frequently.
The all or part of step that one of ordinary skill in the art will appreciate that realization above-described embodiment method can come the relevant hardware of instruction finish by program, described program is to be stored in the computer-readable recording medium described storage medium such as ROM/RAM, magnetic disc, CD etc.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvement and distortion, these improvement and distortion also are considered as protection scope of the present invention.
Claims (3)
1. a Digital Television fast channel switching method is characterized in that, comprising:
Set up in advance finite state machine model, use the state of enumerated variable definition DTV receiving terminal control unit, pre-stored comprises the state transition table of state, incoming event and the output control signal of described DTV receiving terminal control unit;
Receive the incoming event that the user triggers;
According to the incoming event of described user's triggering and the current state of described DTV receiving terminal control unit, check the state transition table of described pre-stored, switch to new state, and produce the output control signal, drive the OSD zone along with user key-press real-time update and change the platform control circuit in the overtime rear startup of user key-press.
2. Digital Television fast channel switching method as claimed in claim 1, it is characterized in that, the state of described DTV receiving terminal control unit comprises idle condition and busy condition, incoming event comprises behind user key-press and the user key-press overtime, and described output control signal comprises Timer Controlling signal, OSD control signal and changes the platform circuit control signal; Described state machine model comprises:
When if the state of DTV receiving terminal control unit is idle condition, when receiving user key-press, the output timer control signal starts timer, and the channel that output OSD control signal is upgraded the OSD zone shows, and the state of DTV receiving terminal control unit is switched to busy condition;
When if the state of DTV receiving terminal control unit is busy condition, in the timer expiry time T, when receiving user key-press, the output timer control signal is restarted timer, and the channel that output OSD control signal is upgraded the OSD zone shows; If the state of DTV receiving terminal control unit is busy condition, timer reaches time-out time T, the timeing closing device, and output is changed the startup of platform circuit control signal and is changed the platform action, and the state of DTV receiving terminal control unit is switched to idle condition.
3. Digital Television fast channel switching method as claimed in claim 2 is characterized in that, the scope of described timer expiry time T is 120 milliseconds to 200 milliseconds.
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| CN201210556915.1A CN103024513B (en) | 2012-12-20 | 2012-12-20 | A kind of method of Digital Television fast channel switching |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103401573A (en) * | 2013-07-31 | 2013-11-20 | 北京昆腾微电子有限公司 | Status adjusting method, adjusting device and audio receiver of audio receiving chip |
| CN104581387A (en) * | 2014-12-25 | 2015-04-29 | 深圳市九洲电器有限公司 | Television program channel changing method and system |
| CN105979354A (en) * | 2015-11-30 | 2016-09-28 | 乐视致新电子科技（天津）有限公司 | Channel switching method and device |
| CN107750011A (en) * | 2017-11-03 | 2018-03-02 | 泾县吉祥纸业有限公司 | A kind of DTV multithreading channel switching method and system |
| CN108650539A (en) * | 2018-04-11 | 2018-10-12 | 海信电子科技（深圳）有限公司 | A kind of human-computer interaction asynchronous controlling method and device for terminal |
| CN108712668A (en) * | 2018-05-31 | 2018-10-26 | 深圳市茁壮网络股份有限公司 | A kind of method and system for accelerating live streaming to cut platform |
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| CN102572587A (en) * | 2012-02-22 | 2012-07-11 | 广东九联科技股份有限公司 | Set-top box and method for quickly switching channel |
| CN102665105A (en) * | 2012-05-15 | 2012-09-12 | 山东泰信电子有限公司 | Method for realizing rapid channel change of digital television terminal |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103401573A (en) * | 2013-07-31 | 2013-11-20 | 北京昆腾微电子有限公司 | Status adjusting method, adjusting device and audio receiver of audio receiving chip |
| CN104581387A (en) * | 2014-12-25 | 2015-04-29 | 深圳市九洲电器有限公司 | Television program channel changing method and system |
| CN104581387B (en) * | 2014-12-25 | 2018-08-14 | 深圳市九洲电器有限公司 | TV programme channel switching method and system |
| CN105979354A (en) * | 2015-11-30 | 2016-09-28 | 乐视致新电子科技（天津）有限公司 | Channel switching method and device |
| CN107750011A (en) * | 2017-11-03 | 2018-03-02 | 泾县吉祥纸业有限公司 | A kind of DTV multithreading channel switching method and system |
| CN108650539A (en) * | 2018-04-11 | 2018-10-12 | 海信电子科技（深圳）有限公司 | A kind of human-computer interaction asynchronous controlling method and device for terminal |
| CN108650539B (en) * | 2018-04-11 | 2020-12-08 | 海信电子科技（深圳）有限公司 | Man-machine interaction asynchronous control method and device for terminal |
| CN108712668A (en) * | 2018-05-31 | 2018-10-26 | 深圳市茁壮网络股份有限公司 | A kind of method and system for accelerating live streaming to cut platform |
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