Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
  • H04N5/50—Tuning indicators; Automatic tuning control
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
  • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
  • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
  • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
  • H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
  • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
  • H04N21/4383—Accessing a communication channel
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/41—Structure of client; Structure of client peripherals
  • H04N21/426—Internal components of the client ; Characteristics thereof

Definitions

• the present invention relates to a broadcast receiving apparatus, in particular, a digital broadcast receiving apparatus, and more specifically to a digital broadcast receiving apparatus provided with an automatic channel selection function.
• the above automatic tuning function unit performs an important function in performing “search” processing and “one preset” processing.
• the “search” process is a process of searching for broadcasts that can be received at the current location one after another by operating the up / down button, for example. By repeating this search, the received information is good and the user is notified. You can select your favorite broadcast. This is one function of automatic tuning.
• the “auto preset” process is to search for and memorize broadcasts that can be received at the current location as described above, and assign the preset broadcast buttons in order from the ones with favorable reception conditions. This is an operation.
• the automatic channel selection described above is an indispensable reception process particularly for an in-vehicle broadcast receiving apparatus, for example, where the current location changes one after another. Almost all transmitters and receivers have been in place for a long time
• the above-mentioned automatic channel selection function unit is naturally an indispensable component for digital broadcast receivers that will be widely used in place of analog broadcast receivers.
• the present invention provides a user-friendly automatic channel selection function for a digital broadcast receiver.
• Patent Document 1 assigns only a service of an ensemble (Transport Stream) that can be received and has a low error rate to a preset button.
• Patent Document 2 includes a search button for specifying a search condition (genre) for a user such as “Sucker” as the preset button.
• Patent Document 3 searches for a channel to which a specified genre is added and displays a search result obtained by excluding the channel stored in the preset memory from the search result. It means reducing the number of operations for selecting a channel.
• Patent Document 4 uses the program ID as registration information in the preset memory, so that even if the channel number is changed on the broadcasting station side, the same program with the same preset content is registered. Can be received, and
• Patent Document 5 describes the most recent detection of a synchronization signal during auto preset. The appropriate frequency is stored, and when selecting a channel, the sync signal can be detected quickly based on the stored frequency information.
• Patent Document 1 Japanese Patent Laid-Open No. 2 0 0 2-2 6 7 5 5
• Patent Document 2 Japanese Patent Laid-Open No. 2 0 0 3-1 5 3 1 0 4
• Patent Document 3 Japanese Patent Laid-Open No. 2 0 0 2 1 5 1 2 7 7
• Patent Document 4 Japanese Patent Laid-Open No. 2 0 0 3-1 0 1 4 2 5
• Patent Document 5 Japanese Patent Laid-Open No. 2 0 0 1-3 0 9 2 5 9 Disclosure of Invention
• the above-mentioned automatic channel selection has been performed for a long time in analog broadcast receivers, and means for realizing it have already been established.
• the established means for automatic channel selection cannot be used as it is for digital broadcast receivers. This is because the automatic channel selection in the analog broadcast receiver is a relatively simple mechanism that searches the broadcast station sequentially and stores the frequency in memory if reception is possible.
• This program information includes, for example, the program name, program genre, program content, program providing time, etc., and the user can select and view his / her favorite program from multiple channels. [0 0 1 2
• the automatic channel selection function unit of the digital broadcast receiver not only the function of automatically selecting the broadcast station but also the service ID (the above program information) is added. It is also necessary to have a function for automatic tuning under certain conditions.
• the present invention has been made in view of the above problems, and an object of the present invention is to realize an easy-to-use automatic channel selection function unit in a digital broadcast receiving apparatus.
• FIG. 1 is a basic configuration diagram of a digital broadcast receiving apparatus according to the present invention. [0 0 1 7]
• Broadcast receiver 1 shown in this figure receives broadcast waves received from antenna 2.
• a broadcast receiving apparatus having an automatic channel selection function unit 1 1 for searching.
• the automatic channel selection function unit 1 1 can set a plurality of different channel selection modes, and a mode from a user. Automatic channel selection is performed in the channel selection mode selected according to the MS selection information MS.
• the automatic channel selection function unit 11 can actually be realized by software processing of the microcomputer 10, but in the present invention, this is an independent one for easy understanding. It is expressed as a component.
• the channel selection mode includes a first channel selection mode 1 1 _ 1 and a second channel selection mode 1 1 1 2, and the above-mentioned broadcast wave is digital broadcast.
• the first channel selection mode 1 1-1 is the channel selection mode in which only the digital broadcasting station is searched.
• Yokoko 2's tuning mode 1 1-2 is a tuning mode that searches not only the digital broadcasting station but also the service ID provided by this broadcasting station. It is a basic feature of the present invention that it has different types of channel selection modes (1 1 — 1 1 1 1), and other components 4, o... Are well known. . A brief description of these well-known components is as follows.
• the broadcast wave received by the antenna 2 is first input to the tuner unit 3, where the broadcast wave (carrier) selected by the user or the automatic channel selection function unit 1 1 is input to the demodulation unit 4. Then, the digital signal is demodulated overnight.
• the digital signal thus demodulated is T S (T r a n s P o r t
• the automatic channel selection function unit 1 1 in the broadcast receiving apparatus 1 searches for only receivable broadcast stations sequentially as in the case of the conventional analog broadcast receiving apparatus, it is not possible in the case of a digital broadcast receiving apparatus. Even though detailed program information (service ID) is provided, it cannot be used, but some users feel dissatisfied.
• service ID program information
• each user has a long waiting time, and for some users who want a quick search only for the station name search, as described above. I feel dissatisfied.
• the present invention can solve the above-mentioned dissatisfaction and the latter dissatisfaction all at once. In other words, even for users who need to search for detailed program information even if it takes a long time, it is also necessary to search for only the station name in a hurry. It is possible to realize automatic channel selection that can satisfy both the requesting user and the user.
• FIG. 1 is a basic configuration diagram of a broadcast receiving apparatus according to the present invention.
• FIG. 2 is a diagram schematically showing an example of the first channel selection mode.
• FIG. 3 is a diagram schematically showing a modification of the first channel selection mode.
• FIG. 4 is a diagram for explaining the second channel selection mode.
• FIG. 5 is a diagram schematically showing the second channel selection mode under the broadcasting system of FIG.
• FIG. 6 is a diagram schematically showing an example of the second channel selection mode.
• FIG. 7 is a diagram showing the identification means added to the automatic channel selection function unit of FIG.
• Figure 8 is a flowchart showing the basic operation in Figure 7.
• Figure 9 is a flowchart based on the first input pattern in Figure 7.
• FIG. 10 is a flow chart based on the second input pattern in FIG.
• Figure 11 is a flow chart based on the third input pattern in Figure 7.
• Fig. 2 is a diagram schematically showing an example of the first channel selection mode.
• 9 ' is the screen of monitor 9 described above, and the station names of receivable stations are displayed in sequence by operating the frequency up button (U) or the down button (D).
• U frequency up button
• D down button
• FIG. 3 is a diagram schematically showing a modification of the first channel selection mode. This In the first channel selection mode modification, the station names of the broadcasting stations are sequentially displayed, and the broadcast program is also displayed for a representative service ID that is predetermined among a plurality of service IDs provided by each broadcasting station. To display.
• FIG. 4 is a diagram for explaining the second channel selection mode. According to the example in the figure, digital broadcasting is transmitted by three broadcasting stations A, B, and C, and each of these broadcasting stations A, B, and C transmits broadcasting according to three service IDs. ing.
• Fig. 5 is a diagram schematically showing the second channel selection mode under the broadcasting format shown in Fig. 4. That is, in the second channel selection mode, the station names of the broadcasting stations are sequentially displayed, and a plurality of services ID provided by the broadcasting station are sequentially displayed for each broadcasting station that is sequentially displayed.
• the broadcast program of the first service ID provided by the broadcast station may be displayed for each sequentially displayed broadcast station.
• FIG. 6 is a diagram schematically showing an example of the second channel selection mode.
• the station names (A, B, C) of the broadcasting station are displayed in sequence, and multiple service IDs provided by the broadcasting station for each broadcasting station displayed in sequence.
• (1, 2, 3-) is displayed sequentially, the broadcast programs for each displayed service ID (shown with dot d) are also displayed (shown by hatching).
• FIG. 7 is a diagram showing identification means and the like added to the automatic channel selection function unit of FIG.
• 2 1 is the identification means.
• the automatic tuning function section 1 1 receives the mode selection information MS from the user by this identification means 2 1 and receives the first tuning mode (1 1 — Identify whether 1) or the second tuning mode (1 1-2) is selected.
• the identification means 21 identifies an input pattern such as long / short press, single / double press, first / second mode designation, etc., input from the user as the mode selection information MS.
• the mode selection information MS from the user is input to the identification means 2 1 by voice.
• Voice recognition means 2 5 can be provided.
• FIG 8 is a flowchart showing the basic operation in Figure 7.
• ⁇ is a flowchart showing the basic operation in Figure 7.
• Step S 1 1 An instruction to enter the automatic tuning mode is input by the user.
• Step S 1 2 It is determined whether or not the mode (first channel selection mode) is selected only for the broadcasting station (second channel selection mode).
• Step S 1 3 Searches only for broadcast stations according to Y E S in step S 1 2. Or
• Step S 14 Search up to service ID according to NO in step S 12.
• Figure 9 is a flowchart based on the first input pattern in Figure 7,
• Figure 10 is a flowchart based on the second input pattern in Figure 7,
• Figure 11 shows a flowchart based on the third input pattern in Figure 7.
• the identification means 2 1 receives the long and short press, the double press once, and the first first input from the user as the mode selection information MS.
• Channel selection mode is identified from various input patterns such as 2-mode designation. These operations are shown in Fig. 9, Fig. 10 and Fig. 11 as a flowchart.
• Step S 2 1 Whether or not the GU I switch (automatic channel selection input device) 2 3 (or equivalent mechanical switch 2 2) on screen 9 'in Fig. 7 is pressed (long press) Judging.
• Step S 2 2 Only broadcast stations are searched according to Y E S (short press) in Step S 2 1. Or
• Step S 2 3 Search up to service ID according to NO (long press) in step S 2 1.
• Step S31 Determine how many times the GU I switch (input device for automatic tuning) 23 (or equivalent mechanical switch 22) on screen 9 'in Fig. 7 is pressed.
• Step S 3 2 Searches only for the broadcasting station in response to one short press of Step S 3 1. Or
• Step S 3 3 Searches up to service ID in response to two short presses in step S 3 1.
• Step S 4 1 GU I switch (input device for “Broadcast station search”) 2 3 (or equivalent mechanical switch) 2 2) Determine whether or not (first mode specified) or not (second mode specified).
• Step S 4 2 Search only the delivery signal according to Y E S (1st mode designation) of Step S 4 1. Or
• Step S 4 3 Searches up to service ID according to NO (second mode designation) in step S 4 1.
• the “auto preset” process unique to the present invention can be performed.
• the channel selection information (broadcast station and service ID, etc.) searched under the first channel selection mode (1 1-1) and the second channel selection mode (1 1-2) ) Is stored (HD D is non-volatile memory). This is shown in Figure 1 as “Auto Preset J Memory 3 1”.
• This third channel selection mode is a combination of the first channel selection mode and the second channel selection mode described above.
• the second channel selection mode shown in Fig. 5 all receivable broadcasting stations and all service IDs provided by each broadcasting station are searched sequentially. All unnecessary service IDs that are not preferred by broadcasters and users are stored, which is inefficient.
• the above-mentioned plurality of channel selection modes include the third channel selection mode, and when the broadcast wave is a digital broadcast, the third channel selection mode includes a plurality of digital broadcast stations. Searching and registering only the broadcasting station selected arbitrarily from among them, and searching and registering the service ID arbitrarily selected from the service IDs provided by the broadcasting station in addition to the broadcasting station Process.
• the auto preset memory 31 stores the channel selection information that should be searched and registered under this third channel selection mode.
• the tuning information searched in each of the above first, second, and third tuning modes only the tuning information selected under specific conditions is input to the auto preset memory 31. It is desirable.
• the first of these specific conditions is the “error rate during reception”. This error rate (B E R) is monitored by the receiver 1, and the above tuning information is rearranged in order from the frequency with the lowest error rate and stored in the auto preset memory 3 1. This makes it possible to always provide high-quality broadcast programs to the user. .
• the second of the above specific conditions is to give priority to “frequency broadcasted nationwide” with priority.
• broadcast programs that can be received anywhere can be captured in a short time.
• the third of the above specific conditions is to select and search for “frequency broadcasted only at the present location”. This makes it possible to capture broadcast programs in the area in a short time.

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• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Circuits Of Receivers In General (AREA)
• Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36000188

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (2)

Citations (12)

Family Cites Families (18)

• 2004
  • 2004-09-01 JP JP2004254130A patent/JP2006074343A/ja active Pending
• 2005
  • 2005-08-29 EP EP05776930A patent/EP1786110A4/en not_active Withdrawn
  • 2005-08-29 US US11/574,233 patent/US20070288983A1/en not_active Abandoned
  • 2005-08-29 KR KR1020087021881A patent/KR100906689B1/ko not_active Expired - Fee Related
  • 2005-08-29 CN CNB2005800290234A patent/CN100555883C/zh not_active Expired - Fee Related
  • 2005-08-29 WO PCT/JP2005/016161 patent/WO2006025544A1/ja not_active Ceased

Patent Citations (12)

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