CN101123717A - A device and method for quick switching of channels - Google Patents
A device and method for quick switching of channels Download PDFInfo
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Abstract
The invention discloses a device and a method realizing fast switching of channel, both of which can ensure a forecast channel with switching possibility and receive and cache channel content of the forecast channel; when the objective channel to be switched is the forecast channel, the invention can broadcast cached channel content of the forecast channel and switch to the forecast channel. Thus, as the device and the method provided by the invention realizing fast switching of channel can pre-determine the forecast channel to be switched and cache the content of the forecast channel, the cached content of the forecasting channel can be broadcasted previously when the follow-up forecast channel is to be switched, while realizing channel switching. The device and the method can significantly save time of switching channel directly, thereby effectively shortening time consumption of channel switching felt by user and then significantly improving user satisfaction.
Description
Technical field
The present invention relates to mobile communication technology, be specifically related to quick device for switching of a kind of realization channel and method.
Background technology
In mobile multimedia communication, the length of channel switching time is most important to user experience.Though shorten the time that channel switches by adjusting modes such as timeslice parameter, source encoding parameter at present as far as possible; But owing to lack return path, cause some interactively improvement technology can not be used for multimedia communication, to shorten the time that channel switches.Therefore, do not occur as yet at present effectively shortening the channel technology of switching time.
Summary of the invention
In view of this, main purpose of the present invention is to provide quick device for switching of a kind of realization channel and method, with effective shortening channel switching time.
For achieving the above object, technical scheme of the present invention is achieved in that
The quick device for switching of a kind of realization channel, this device comprises continuous switch control unit, receiving element; Also comprise the channel content buffer unit, the channel content broadcast unit that link to each other with described receiving element; Wherein,
Described switch control unit is used to determine to have the predictive channel of switching possibility, and notifies described receiving element;
Described receiving element is used to receive the channel content of the definite predictive channel of described switch control unit, and sends to the channel content buffer unit; Also be used for when the target channel that will switch to is predictive channel, obtain the channel content of this predictive channel, and send to described channel content broadcast unit from described channel content buffer unit;
Described channel content buffer unit is used to the channel content of preserving and predictive channel being provided;
Described channel content broadcast unit is used for the channel content from described receiving element is comprised the processing of broadcast.
This device further comprises the user behavior statistic unit that links to each other with described switch control unit; Wherein,
Described user behavior statistic unit is used for switching historical record according to the user channel of described switch control unit, the channel commonly used of determining to have switching possibility, and the information of described channel commonly used sent to described switch control unit;
Described switch control unit is further used for when determining described predictive channel the channel information commonly used from described user behavior statistic unit being taken in.
This device further comprises the adjacent channel search unit that links to each other with described switch control unit; Wherein,
Described adjacent channel search unit is used for the current channel information according to described switch control unit, determines the adjacent channel that current channel is adjacent, and the information of described adjacent channel is sent to described switch control unit;
Described switch control unit is further used for when determining described predictive channel the adjacent channel information from described adjacent channel search unit being taken in.
This device further comprises user behavior statistic unit, the adjacent channel search unit that links to each other with described switch control unit; Wherein,
Described user behavior statistic unit is used for switching historical record according to the user channel of described switch control unit, the channel commonly used of determining to have switching possibility, and the information of described channel commonly used sent to described switch control unit;
Described adjacent channel search unit is used for the current channel information according to described switch control unit, determines the adjacent channel that current channel is adjacent, and the information of described adjacent channel is sent to described switch control unit;
Described switch control unit is further used for when determining described predictive channel, and channel information commonly used and the adjacent channel information from described user behavior statistic unit, adjacent channel search unit is respectively taken in.
Further be provided with timer in this device, beginning to restart this timer when channel switches at every turn;
Described timer is used for sending overtime notice to described receiving element when overtime;
Described receiving element is further used for receiving only the channel content of current channel after receiving described overtime notice.
Described receiving element is further used for controlling described channel content buffer unit and empties the channel content of being preserved;
Described channel content buffer unit is further used for the control according to described receiving element, empties the channel content of being preserved.
Described receiving element is further used for the channel content that sends to described channel content buffer unit is carried out decoding processing.
The target channel that switches to is not described predictive channel; Described receiving element is further used for being directly switch to described target channel.
A kind of realization channel fast switching method, this method comprises:
Determine to have the predictive channel of switching possibility, receive the also channel content of the described predictive channel of buffer memory; When the target channel that will switch to is described predictive channel, plays the channel content of this predictive channel of institute's buffer memory, and switch to this predictive channel.
The method of determining described predictive channel is:
All channels except that current channel all are defined as described predictive channel;
Perhaps, switch the channel commonly used that historical record determines to have switching possibility, described channel commonly used is defined as described predictive channel according to user channel;
Perhaps, determine the adjacent channel that current channel is adjacent, described adjacent channel is defined as described predictive channel according to current channel information;
Perhaps, switch the channel commonly used that historical record determines to have switching possibility according to user channel, and determine the adjacent channel that current channel is adjacent according to current channel information, the channel with being comprised in the common factor of described channel commonly used and described adjacent channel or the intersection is defined as described predictive channel.
The time of not carrying out the channel switching is overtime, and this method further comprises:
Receive only the channel content of current channel, and empty the channel content of the described predictive channel of institute's buffer memory.
Play before the described channel content, further this channel content is comprised the processing of decoding;
Perhaps, the described channel content at buffer memory further comprises the processing of decoding.
Switching to described target channel triggers because of receiving channel change command; The described channel content of the institute's buffer memory that is played is the channel content of the described predictive channel of institute's buffer memory after described channel change command.
The target channel that switches to is not described predictive channel; This method further comprises: be directly switch to described target channel.
As seen, quick device for switching of realization channel provided by the present invention and method, owing to pre-determine the predictive channel that may switch to, and buffer memory predictive channel content; Make the follow-up predictive channel content that can play institute's buffer memory will switch to this predictive channel the time earlier, meanwhile can carry out channel and switch.This obviously can save and directly carry out channel and switch the needed time, thereby the channel switching time that can effectively shorten the user and experienced, and then can obviously improve user satisfaction.
Description of drawings
Fig. 1 is the quick device for switching figure of realization channel of one embodiment of the invention;
Fig. 2 is the flow chart that the realization channel of one embodiment of the invention switches fast;
Fig. 3 is the operating state principle schematic in the channel handoff procedure of the present invention.
Embodiment
Below in conjunction with accompanying drawing the technology of the present invention is described in detail.
Referring to Fig. 1, Fig. 1 is the quick device for switching figure of realization channel of one embodiment of the invention.Among Fig. 1, switch control unit links to each other with user behavior statistic unit, adjacent channel search unit respectively; Receiving element links to each other with channel content buffer unit, channel content broadcast unit respectively; Switch control unit links to each other with receiving element.
When practical application, switch control unit can be mutual with user behavior statistic unit, adjacent channel search unit, so that user behavior statistic unit, adjacent channel search unit know that current channel information and user channel switch historical record.
Switch the historical record from the described user channel of being known, the user behavior statistic unit can obtain the access times of each channel, and the access times of each channel and the access times threshold value that sets in advance compared, the channel that access times is surpassed described access times threshold value is defined as channel commonly used, and the information with described channel commonly used sends to switch control unit again.
From the described current channel information of being known, the adjacent channel search unit can obtain channel identification informations such as the timeslice time location of current channel and channel number, and the timeslice time location of searching and current channel or the adjacent channel of channel number, the channel that finds is defined as the adjacent channel adjacent with current channel, and the information with described adjacent channel sends to switch control unit again.
After receiving channel information from user behavior statistic unit, adjacent channel search unit, switch control unit extracts common factor or the intersection from the channel information of user behavior statistic unit and adjacent channel search unit, and the pairing channel of channel information that is comprised in the set that will extract is defined as the follow-up predictive channel that might switch to, and notifies receiving element to receive the channel content of described predictive channel in modes such as transmission level signal or incidents again.When receiving the notice from switch control unit, receiving element receives the channel content of described predictive channel, and the predictive channel content of receiving is sent to the channel content buffer unit preserves.Certainly, receiving element also can receive the channel content of current channel, and the current channel content of receiving is sent to the channel content broadcast unit, the channel content broadcast unit then to the channel content of receiving decode, subsequent treatment such as broadcast.
When receiving channel change command, the target channel information that will switch to that is comprised during switch control unit will be ordered sends to receiving element.Receiving element is determined to switch to target channel according to the target channel information of receiving, and obtains the target channel content from the channel content buffer unit.If preserve the target channel content in the channel content buffer unit, the channel content buffer unit then sends to receiving element with this target channel content, receiving element is searched the target channel content of institute's buffer memory after described channel change command in the target channel content of receiving, and the target channel content that finds sent to the channel content broadcast unit, the channel content broadcast unit then to the channel content of receiving decode, subsequent treatment such as broadcast.
Certainly, receiving element also then receive the channel content of described target channel and sends to the channel content broadcast unit with the target channel content of receiving, by the channel content broadcast unit to this target channel content decode, subsequent treatment such as broadcast.And, the channel content broadcast unit can also splice the channel content of buffer memory channel content of being obtained and the target channel that switches to, described connecting method can have multiple, as: the frame losing of selection, interim fast decoding broadcast etc. are play, had to persistent cache.In addition, receiving element can be controlled the target channel content of channel content buffer unit deletion institute's buffer memory before described channel change command to send modes such as order.
Certainly, if do not preserve the target channel content in the channel content buffer unit, the channel content buffer unit then sends failure response to receiving element so, receiving element is then used prior art and is carried out the channel switching, the receiving target channel content, and the target channel content of receiving sent to the channel content broadcast unit, the channel content broadcast unit then to the channel content of receiving decode, subsequent treatment such as broadcast.
Need to prove: can remove user behavior statistic unit and/or adjacent channel search unit.If in user application behavioral statistics unit, the adjacent channel search unit only, switch control unit then is defined as predictive channel with the pairing channel of the channel information of receiving; If not user application behavioral statistics unit and adjacent channel search unit, switch control unit then can all be defined as predictive channel with all channels except that current channel.In addition, can be when buffer memory predictive channel content, to the preliminary treatment such as decode of the predictive channel content of institute's buffer memory; Like this, follow-up will switch to this predictive channel the time, the processing such as carrying out the channel content decoding that just can no longer expend time in is finished the channel content that pre decoding etc. is handled and can play-over.
In actual applications, switching timer can also be set in switch control unit, and begin to restart this timer when channel switches at every turn.When timer expiry, can determine to be at present the stable playback state that channel switches does not take place for a long time, timer can send overtime notice to receiving element; Receiving element receives only the channel content of current channel after receiving the overtime notice of self-timer, receiving element can also further be controlled the channel content buffer unit in modes such as transmission orders and empty the channel content of being preserved.
By as seen at the description of Fig. 1, owing to pre-determine the predictive channel that may switch to, and buffer memory predictive channel content; Make the follow-up predictive channel content that can play institute's buffer memory will switch to this predictive channel the time earlier, meanwhile can carry out channel and switch.This obviously can save and directly carry out channel and switch the needed time, thereby the channel switching time that can effectively shorten the user and experienced, and then can obviously improve user satisfaction.
Can represent with flow process shown in Figure 2 describing at the key of Fig. 1.Referring to Fig. 2, Fig. 2 is the flow chart that the realization channel of one embodiment of the invention switches fast, and this flow process may further comprise the steps:
Step 201: the content that receives predictive channel with switching possibility.
Step 202: the predictive channel content that buffer memory and preliminary treatment receive.
Step 203: receiving channels switching command.
Step 204: whether the target channel that judgement will switch to is predictive channel, if directly enter step 206; Otherwise, enter step 205.
Step 205: switch to target channel, and return step 201.
Step 206: play the content of the target channel of institute's buffer memory after described channel change command, and switch to this target channel.
Operating state in the above-mentioned channel handoff procedure can realize by state machine.Referring to Fig. 3, Fig. 3 is the operating state principle schematic in the channel handoff procedure of the present invention.Among Fig. 3, switch in case first channel takes place, system enters first switching state.Under initial switching state, when the channel switching took place once more, system entered switching state once more.New switching takes place down still at switching state once more in switching state once more.Switch if new channel takes place in the certain hour section, then think the stable playback state that enters.Then be not defined as idle condition at first during the receiving channels content.Can switch between above-mentioned each state.
By the above as seen, quick device for switching of realization channel provided by the present invention and method, owing to pre-determine the predictive channel that may switch to, and buffer memory predictive channel content; Make the follow-up predictive channel content that can play institute's buffer memory will switch to this predictive channel the time earlier, meanwhile can carry out channel and switch.This obviously can save and directly carry out channel and switch the needed time, thereby the channel switching time that can effectively shorten the user and experienced, and then can obviously improve user satisfaction.
Claims (14)
1. realize the quick device for switching of channel for one kind, it is characterized in that this device comprises continuous switch control unit, receiving element; Also comprise the channel content buffer unit, the channel content broadcast unit that link to each other with described receiving element; Wherein,
Described switch control unit is used to determine to have the predictive channel of switching possibility, and notifies described receiving element;
Described receiving element is used to receive the channel content of the definite predictive channel of described switch control unit, and sends to the channel content buffer unit; Also be used for when the target channel that will switch to is predictive channel, obtain the channel content of this predictive channel, and send to described channel content broadcast unit from described channel content buffer unit;
Described channel content buffer unit is used to the channel content of preserving and predictive channel being provided;
Described channel content broadcast unit is used for the channel content from described receiving element is comprised the processing of broadcast.
2. device according to claim 1 is characterized in that, this device further comprises the user behavior statistic unit that links to each other with described switch control unit; Wherein,
Described user behavior statistic unit is used for switching historical record according to the user channel of described switch control unit, the channel commonly used of determining to have switching possibility, and the information of described channel commonly used sent to described switch control unit;
Described switch control unit is further used for when determining described predictive channel the channel information commonly used from described user behavior statistic unit being taken in.
3. device according to claim 1 is characterized in that, this device further comprises the adjacent channel search unit that links to each other with described switch control unit; Wherein,
Described adjacent channel search unit is used for the current channel information according to described switch control unit, determines the adjacent channel that current channel is adjacent, and the information of described adjacent channel is sent to described switch control unit;
Described switch control unit is further used for when determining described predictive channel the adjacent channel information from described adjacent channel search unit being taken in.
4. device according to claim 1 is characterized in that, this device further comprises user behavior statistic unit, the adjacent channel search unit that links to each other with described switch control unit; Wherein,
Described user behavior statistic unit is used for switching historical record according to the user channel of described switch control unit, the channel commonly used of determining to have switching possibility, and the information of described channel commonly used sent to described switch control unit;
Described adjacent channel search unit is used for the current channel information according to described switch control unit, determines the adjacent channel that current channel is adjacent, and the information of described adjacent channel is sent to described switch control unit;
Described switch control unit is further used for when determining described predictive channel, and channel information commonly used and the adjacent channel information from described user behavior statistic unit, adjacent channel search unit is respectively taken in.
5. according to each described device of claim 1 to 4, it is characterized in that, further be provided with timer in this device, beginning to restart this timer when channel switches at every turn;
Described timer is used for sending overtime notice to described receiving element when overtime;
Described receiving element is further used for receiving only the channel content of current channel after receiving described overtime notice.
6. device according to claim 5 is characterized in that:
Described receiving element is further used for controlling described channel content buffer unit and empties the channel content of being preserved;
Described channel content buffer unit is further used for the control according to described receiving element, empties the channel content of being preserved.
7. according to each described device of claim 1 to 4, it is characterized in that described receiving element is further used for the channel content that sends to described channel content buffer unit is carried out decoding processing.
8. according to each described device of claim 1 to 4, it is characterized in that the target channel that will switch to is not described predictive channel; Described receiving element is further used for being directly switch to described target channel.
9. realize the channel fast switching method for one kind, it is characterized in that this method comprises:
Determine to have the predictive channel of switching possibility, receive the also channel content of the described predictive channel of buffer memory; When the target channel that will switch to is described predictive channel, plays the channel content of this predictive channel of institute's buffer memory, and switch to this predictive channel.
10. method according to claim 9 is characterized in that, determines that the method for described predictive channel is:
All channels except that current channel all are defined as described predictive channel;
Perhaps, switch the channel commonly used that historical record determines to have switching possibility, described channel commonly used is defined as described predictive channel according to user channel;
Perhaps, determine the adjacent channel that current channel is adjacent, described adjacent channel is defined as described predictive channel according to current channel information;
Perhaps, switch the channel commonly used that historical record determines to have switching possibility according to user channel, and determine the adjacent channel that current channel is adjacent according to current channel information, the channel with being comprised in the common factor of described channel commonly used and described adjacent channel or the intersection is defined as described predictive channel.
11. method according to claim 9 is characterized in that, the time of not carrying out the channel switching is overtime, and this method further comprises:
Receive only the channel content of current channel, and empty the channel content of the described predictive channel of institute's buffer memory.
12., it is characterized in that according to each described method of claim 9 to 11:
Play before the described channel content, further this channel content is comprised the processing of decoding;
Perhaps, the described channel content at buffer memory further comprises the processing of decoding.
13. method according to claim 9 is characterized in that, triggers because of receiving channel change command to the switching of described target channel; The described channel content of the institute's buffer memory that is played is the channel content of the described predictive channel of institute's buffer memory after described channel change command.
14. method according to claim 9 is characterized in that, the target channel that switch to is not described predictive channel; This method further comprises: be directly switch to described target channel.
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