CN1882061A - Digital television and its channel setting method - Google Patents
Digital television and its channel setting method Download PDFInfo
- Publication number
- CN1882061A CN1882061A CN 200510046704 CN200510046704A CN1882061A CN 1882061 A CN1882061 A CN 1882061A CN 200510046704 CN200510046704 CN 200510046704 CN 200510046704 A CN200510046704 A CN 200510046704A CN 1882061 A CN1882061 A CN 1882061A
- Authority
- CN
- China
- Prior art keywords
- channel
- search
- digital
- analog
- program
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
The invention relates to a digit television which can skip when searching digit program, and a relative program setting method, wherein the image display device with analogue tuner and digit tuner comprises following parts that: a keyboard input part for inputting the command that automatically searching program and variable user commands; a control part for using the analogue tuner to search analogue program when the keyboard inputs the automatic search program command, and based on the searched program number, to decide the digit program search method, then based on the search method, to use the digit tuner to search the digit program; and a storage device for storing the search result as analogue program/digit program. Therefore, the program memorized as analogue program when automatically searching the program is not searched to save the search time.
Description
Affiliated technical field
The present invention relates to a kind of image display; Especially relate to being set to the channel number of analog channel, do not form Digital Television and channel setting method thereof that digital channel is set.
Background technology
In general, when current analog form TV is used as large-scale tv machine rating, can reduce picture quality; And ultrashort wave and utmost point ultrashort wave frequency band added up entirely, its channel that obtains distributing also can only reach more than 80, and this is a limit as one-way media.
Digital Television is come out for the problem that solves such simulated television just.Digital Television has greatly been improved the picture quality of simulated television, and can provide more clear to the high-quality screen more than two times than simulated television.Owing to there is not interference between adjacent channel, therefore can use the whole channels field of using of failing at present.
In addition, the advantage of digital broadcasting is, under the situation of loss of information not, can freely transmit, and processing is supplied with, and the content (video, audio frequency, data) of preserving made, thereby the diversified service that the present simulation epoch can not provide is provided.
For instance, eliminated the factor that analog TV (TV) signal produces by air the time as reduction image qualities such as ghost image, chromatic dispersions; Digital broadcasting utilizes digitized advantage that the service of high image quality and high tone quality can be provided in addition.
High image quality is equivalent to the gem-pure image quality of 35mm film level, is called as high definition TV (HDTV).Standard definition television (SDTV) is slightly more better than present analog broadcasting image quality, but not as high image quality, is equivalent to the image quality of about 16mm film.
For image quality, the least unit ' pixel ' of forming picture is many more, and picture is just clear more.The pixel of high definition TV approximately is 2,000,000, and (resolution: 1920 * 1080), and the pixel of standard definition television approximately is 350,000 (resolution: 720 * 480).The service of high tone quality is meant by broadcasting can not only provide CD (CD) the three-dimensional clearly tonequality of level, can also provide movie theatre to use around stereo system.Because stereo system can use 6 loud speakers, therefore can experience third dimension and presence as cinema.
Because digital broadcasting has these advantages, therefore be transformed into digital broadcasting by analog broadcasting gradually at present.Present analog broadcasting and digital broadcasting can be broadcast to 2010 in the future simultaneously.Analog broadcasting hereafter will disappear, and will all adopt digital broadcasting.
Because such broadcast environment, the digital television of producing at present all provides the method for the automatic setting channel of tuning analog broadcasting simultaneously and digital broadcasting.That is, when implementing the automatic setting channel, understand the antenna condition of input at present earlier, successively with orders such as space (Air) broadcasting/wired broadcasting/Digital Television space (Air) broadcasting/Digital Television wired broadcasting, implement the automatic setting channel then.
Fig. 1 is the simple declaration figure of the channel frequency of present broadcasting.
As shown in Figure 1, the space wave broadcast allocation is at No. 2 to No. 69, and wired broadcasting is distributed in No. 1,14～No. 125.In the frequency relevant, detect the synchronizing signal of channel with each number; If there is synchronizing signal, just remember channel; Otherwise, just do not remember.
At this moment, space wave broadcasting and the identical frequency band of Digital Television space wave broadcasting use; Wired broadcasting is also used identical frequency band with Digital Television wired broadcasting.
Owing to use identical frequency band, therefore in the frequency band of analog broadcasting is arranged, can not broadcast digital broadcasting simultaneously.So to the channel number of analog broadcasting is arranged, carrying out the digital broadcasting search does not just have any meaning.
But, for the digital television on the conventional art,, so the channel number that analog broadcasting is arranged is also carried out the digital broadcasting search if the user implements the automatic setting channel, meeting consumes the unnecessary time when setting contents of channel, the problem of much unnecessary time therefore occurs consuming.
Summary of the invention
The present invention develops in order to solve the above problems.The objective of the invention is to the channel that has analog broadcasting is carried out digital broadcasting when search, it can be jumped.
Another object of the present invention is, when the search broadcast channel, makes its jump be present in analog broadcast channel in the same frequency, to shorten the channel setting time.
In order to achieve the above object, the digital television that the present invention has analog tuner and digital tuner has as the lower part: be provided with keyboard input part, be used for importing the instruction and the instruction of various customer requirements of auto channel search; Be provided with control part, if be used for by the instruction of keyboard input part input auto channel search, so by analog tuner search analog channel, according to the analog channel number that searches whether be a certain number of more than, decision digital channel way of search, and according to relevant way of search, by digital tuner search digital channel; Also be provided with memory, be used for depositing the Search Results of analog channel/digital channel etc.
Above-mentioned decision digital channel way of search is: if the analog channel number that searches out is more than a certain number of, so with part way of search search digital channel; If the analog channel number that searches out below a certain number of, is searched for digital channel in the mode of whole search so.
In order to achieve the above object, the channel setting method of digital television of the present invention had as the next stage: if be provided with the function that the user has selected auto channel search, so just search for analog channel, and it is deposited into the stage of memory; Be provided with according to the analog channel number that searches out whether be a certain number of more than, decision is still part stages of searching for digital channel of search all; Also be provided with according to by the method that determined, to the stage of digital channel search till the channel that has configured.
Above-mentioned decision is search or the stage of partly searching for digital channel all, comprise as the next stage: if the analog channel number that searches out is more than a certain number of, the channel of (skip) analog channel and digital channel coexistence so jumps, only to not having the channel of analog channel, the stage of carrying out the search of digital channel.
Above-mentioned decision is still part stages of searching for digital channel of search all, also comprise as the next stage: if the analog channel number that searches out below a certain number of, stage that all digital channels are all searched for so just.
The invention has the beneficial effects as follows:
The first, when implementing the auto channel search function,, do not carry out the digital channel search, thereby can shorten the channel search time being the channel of analog channel by memory.
The second, along with the shortening of auto channel search time, can in the many broadcast environments of channel number,, obtain more efficiently application as wired channel or closed circuit channel etc.
The 3rd, along with the shortening of auto channel search time, can improve user's satisfaction.
Description of drawings
Fig. 1 is the frequency assignment chart of analog-and digital-channel.
Fig. 2 is the formation block diagram of digital television of the present invention.
Fig. 3 is the flow chart of digital television channel setting method of the present invention.
Among the figure:
100: analog portion 101: analog tuner
102: comb filter 103:NTSC decoder
200: Digital Signal Processing portion 201: digital tuner
202: multichannel decomposes 203: Video Decoder
300: keyboard input part 400: control part
500: memory 600: image processing part
700: display part
Embodiment
Below, with reference to description of drawings Digital Television of the present invention and channel setting method thereof.
Fig. 2 is the structured flowchart of digital television of the present invention; Fig. 3 is the flow chart of digital television channel setting method of the present invention.
Digital television of the present invention, as shown in Figure 2, by constituting: be provided with analog portion 100, be used for receiving analog broadcast signal, and it is processed into the signal that can show as the lower part; Be provided with Digital Signal Processing portion 200, be used for receiving digital broadcast signal, and it is processed into the signal that can show; Be provided with keyboard input part 300, be used for importing the customer requirements instruction; Also be provided with control part 400, be used for according to the customer requirements instruction by keyboard input part 300 inputs, output control signal; Also be provided with image processing part 600, be used for control signal according to control part 400 output, receive the picture signal that is processed into by analog portion 100 or Digital Signal Processing portion 200, and it is processed into the signal that can be presented on the display part 700; Also be provided with memory 500, be used for depositing the broadcast message of all channels.
Above-mentioned analog portion 100 is by constituting as the lower part: be provided with analog tuner 101, be used for tuning analog channel; Be provided with ntsc decoder 103, be used for the broadcast singal that is tuned in analog tuner 101, by receiving after comb filter 102 filtering, and be decoded into signal into NTSC.
Above-mentioned Digital Signal Processing portion 200 is by constituting as the lower part: be provided with digital tuner 201, be used for tuning digital channel; Be provided with demultiplexer 202, be used for receiving the digital channel broadcast singal that is tuned to by digital tuner 201, and be broken down into image, sound and additional information etc.; Also be provided with Video Decoder 203, be used for receiving the picture signal that resolves into by demultiplexer 202, and decoding.
If the user has imported the channel selection instruction by keyboard input part 300, so for the tuning channel correlation of energy, control part 400 is to relevant tuner output control signal.If the user has imported the instruction of auto channel search by keyboard input part 300, so earlier by 101 pairs of analog channels of analog tuner tuning after, again by 201 pairs of digital channel tunings of digital tuner.
At this moment, if tuning channel number is a certain number of greater than what set, so when digital channel is tuning, the digital channel of will jump (Skip) and analog channel same channel carries out partially-tuned.Promptly passed through analog channel tuning after, do not carry out the tuning of digital signal for the channel that signal is arranged.
The method of tuning analog channel is earlier by analog tuner 101, to search for and the current synchronizing signal of wanting tuning channel correlated frequency; Confirm whether can in the correlated frequency scope of having set, search this synchronizing signal, to judge whether to exist the signal of channel.
The method of tuning digital channel is, will be by the broadcast singal of digital tuner 201 receptions, form with the digital stream of VSBsync (residual sideband is synchronous) mode error correction transmits, perhaps will be by the normalized transmission signal sequence of MPEG-2 mode, with the form transmission of transport stream data packet (Transport Stream Packet).
At this moment, the digital stream with the error correction of VSB sync mode is input to demultiplexer 202; In demultiplexer 202, find out the information flow of (Program Association Table) form that has PAT, its data are sent to control part 400 constitute form, constitute PMT (Program Map Table) form then, and in transport stream, find out VCT (video channel table) form with 0xlffb address, whether the transport stream of distinguishing current input is PSIP (program and system information protocol) transport stream, and then find out the transport stream that constitutes EIT (Event Information Table) form, constitute the EIT form.In addition,, so just can know the actual channel number of current RF (radio frequency) channel if select out the channel number of VCT form, promptly main-auxilliary channel number.
On the contrary, with the data flow of MPEG-2 system specification formation, the part that packet begins has packet header (header), and PID (Packet Identifier: number packet identifier) has been write down in this packet header.The PID number can become the information translation of time division multiplexing the information of demultiplexing.In addition, the PID number demonstrates the kind of current data packet, and whether be image data packets, voice data bag, and additional information bag (Program Specific Information) if therefore can detect current packet by analysis PID number.That is to say that it is the PAT by the pid information with PMT, have the PMT that is included in the program numbers information in the current RF channel digit stream, and have that the EIT of each program detail information constitutes.
But, in the digital stream that constitutes by PAT/PMT, do not have the channel number of main-auxilliary form, the video/audio pid information of the only program number in digital stream, and each program.That is to say that the main channel number uses the RF channel number of input digit stream, auxilliary channel number then uses the program numbers of PMT.
Digital TV channel establishing method of the present invention with reference to Fig. 3 as can be known, if at first the user imports the power connection instruction, judges whether to have imported the instruction S101-S102 of auto channel search so.
If the user has imported the instruction of auto channel search, after the so tuning analog channel it is deposited S103.
Then, according to tuning result, judge whether the analog channel number that searches out is the above S104 of channel number that has set.
If the analog channel number that searches out for more than the channel number of having set, is so just partly searched for digital channel S105.That is to say that jump (Skip) exists the channel of analog channel, search selectively.
Judge whether the channel search S106 that is through with then.
If be through with channel search, so just the channel that searches is deposited S107.
Then, if imported the power supply open command, so just finish search S108.
In addition, if the analog channel number that searches out less than the channel number of having set, therefore the analog channel number of Cun Zaiing is few so, searches for whole digital channel S109.
Judge whether the channel search S110 that is through with then.
If be through with channel search, so just the channel that searches is deposited S111.
As mentioned above, in the channel setting method of Digital Television of the present invention, if the user has imported the instruction of auto channel search, finish channel search so earlier to analog channel after, begin to carry out the search of digital channel again; If the analog channel number that searches out be a certain number of more than, so just judge whether present digital channel is the analog channel of having remembered.If the channel in the memory is searched for next channel with regard to not implementing tuning operation so.
Claims (5)
1, a kind of digital television is characterized in that by constituting as the lower part:
Be provided with keyboard input part, be used for importing the instruction and the instruction of various customer requirements of auto channel search;
Be provided with control part, if be used for by the instruction of keyboard input part input auto channel search, so by analog tuner search analog channel, according to the analog channel number that searches whether be a certain number of more than, decision digital channel way of search, and according to relevant way of search, by digital tuner search digital channel;
Also be provided with memory, be used for depositing the Search Results of analog channel/digital channel etc.
2, digital television according to claim 1 is characterized in that described decision digital channel way of search is:
If the analog channel number that searches out is more than a certain number of, so with part way of search search digital channel; If the analog channel number that searches out below a certain number of, is searched for digital channel in the mode of whole search so.
3, a kind of digital television channel setting method is characterized in that by constituting as the next stage:
Imported the instruction of auto channel search if be provided with the user by keyboard input part, so just searched for analog channel, and it is deposited into the stage of memory;
Be provided with according to the analog channel number that searches out whether be a certain number of more than, decision is still part stages of searching for digital channel of search all;
Also be provided with according to by the method that determined, to the stage of digital channel search till the channel that has configured.
4, digital television channel setting method according to claim 3 is characterized in that described decision is all searched for or the stage that part is searched for digital channel, comprises as the next stage:
The channel of analog channel and digital channel coexistence if the analog channel number that searches out more than a certain number of, is so just jumped is not only to existing the channel of analog channel, the stage of carrying out the search of digital channel.
5, digital television channel setting method according to claim 3 is characterized in that described decision is all searched for or the stage that part is searched for digital channel, also comprises as the next stage:
If the analog channel number that searches out below a certain number of, stage that all digital channels are all searched for so just.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046704 CN1882061A (en) | 2005-06-17 | 2005-06-17 | Digital television and its channel setting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046704 CN1882061A (en) | 2005-06-17 | 2005-06-17 | Digital television and its channel setting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1882061A true CN1882061A (en) | 2006-12-20 |
Family
ID=37520014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510046704 Pending CN1882061A (en) | 2005-06-17 | 2005-06-17 | Digital television and its channel setting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1882061A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658166A (en) * | 2016-12-13 | 2017-05-10 | 广州视源电子科技股份有限公司 | Television program channel searching method, switching method and system |
| CN107426608A (en) * | 2017-07-31 | 2017-12-01 | 深圳Tcl数字技术有限公司 | A kind of television channel searching method, smart machine and storage medium |
-
2005
- 2005-06-17 CN CN 200510046704 patent/CN1882061A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658166A (en) * | 2016-12-13 | 2017-05-10 | 广州视源电子科技股份有限公司 | Television program channel searching method, switching method and system |
| CN107426608A (en) * | 2017-07-31 | 2017-12-01 | 深圳Tcl数字技术有限公司 | A kind of television channel searching method, smart machine and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100521750C (en) | Digital TV and channel setting method | |
| CN1293747C (en) | Device and method for supply digital broadcasting programme specific information to audience | |
| CN1254091C (en) | Device and method for channel control of digital TV | |
| JP4191379B2 (en) | Reduction of channel scanning and channel change delay in ATSC television receivers | |
| CN1189024C (en) | Information processing device | |
| US20160249076A1 (en) | Method for transmitting services information in different types of broadcasting networks and unit for processing said information | |
| CN1956509A (en) | Digital TV and control method of the same | |
| CN1291404A (en) | Video processing apparatus and video processing method | |
| CN1913620A (en) | Signal processing apparatus and method thereof | |
| EP2074823A1 (en) | Method of controlling receiver for processing broadcast signal defining multi-channel broadcast and broadcast receiver using the same | |
| CN1223032A (en) | Program selection system for digital TV receiver | |
| US8839335B2 (en) | Method of processing multi-mode service broadcast signal and digital television receiver using the same | |
| US20060132663A1 (en) | Image display device and channel setting method | |
| CN1878262A (en) | Display apparatus and control method thereof | |
| CN101611622A (en) | Video control unit | |
| CN1882061A (en) | Digital television and its channel setting method | |
| KR20090040985A (en) | Epg display device and this method | |
| KR100816287B1 (en) | Method and apparatus for providing of multi-channel digital broadcasting data | |
| CN1578432A (en) | Digital television and channel setting method thereof | |
| CN1956521A (en) | Method of changing/managing channel and broadcastingg receiver thereof | |
| CN104602106B (en) | The switching method of television channel and the switching equipment using this method | |
| CN1710942A (en) | Broadcast receiving apparatus having combined mode set-up function and method thereof | |
| CN1593060A (en) | Method of selecting a teletext page, teletex receiver and television set | |
| CN1878256A (en) | Image display device with automatic zoom function and its controlling method | |
| CN1897685A (en) | Digital broadcast receiver and its oriented channel variation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING LG XINGANG DISPLAY CO., LTD. Free format text: FORMER OWNER: LG ELECTRONICS (SHENYANG) CO., LTD. Effective date: 20070316 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070316 Address after: 210038 No. 346 Yao Yao Avenue, Nanjing economic and Technological Development Zone, Jiangsu, China Applicant after: LG Electronics Nanjing Display Co., Ltd. Address before: 110179 No. 3540 hi tech Development Zone, Liaoning, Shenyang Applicant before: LG Electronic (Shenyang) Co., Ltd. |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |