EP2055097A1 - Empfangseinrichtung und verfahren zur überwachung der empfangseigenschaften eines tv-signals und damit verbundenen verbesserung eines programm-diversitys zwischen analogen und digitalen programmen - Google Patents
Empfangseinrichtung und verfahren zur überwachung der empfangseigenschaften eines tv-signals und damit verbundenen verbesserung eines programm-diversitys zwischen analogen und digitalen programmenInfo
- Publication number
- EP2055097A1 EP2055097A1 EP07786663A EP07786663A EP2055097A1 EP 2055097 A1 EP2055097 A1 EP 2055097A1 EP 07786663 A EP07786663 A EP 07786663A EP 07786663 A EP07786663 A EP 07786663A EP 2055097 A1 EP2055097 A1 EP 2055097A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- trigger
- level
- host controller
- signal
- information
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 title claims abstract description 6
- 230000011664 signaling Effects 0.000 claims description 6
- 230000001960 triggered effect Effects 0.000 claims description 6
- 238000009795 derivation Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Classifications
-
- 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
- H03J1/0058—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means
- H03J1/0066—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means with means for analysing the received signal strength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
- H04H20/22—Arrangements for broadcast of identical information via plural broadcast systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/26—Arrangements for switching distribution systems
-
- 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
- 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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
-
- 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
Definitions
- Receiving device and method for monitoring the reception characteristics of a TV signal and associated improvement of a program diversity between analog and digital programs are described.
- the invention relates to a method and a mobile receiving device for terrestrial TV signals, which significantly improves program diversity between analog and digital TV programs.
- Program diversity is a process that gives the viewer the opportunity to view the desired program even over long distances.
- the TV receiver automatically switches the frequencies that are emitted in a transmitter landscape of several distant transmitters, so that the viewer can always actively pursue the channel with the best quality.
- the invention is therefore based on the object to provide a receiving device and a method for monitoring the reception characteristics of a TV signal and switching, whereby the above-described requirements can be realized.
- the device consists of two blocks, which are considered in more detail below and with reference to FIG. 1 (block diagram of the receiving device).
- the receiving unit converts the received RF signals into video data and thereby evaluates the information about the quality of the received video signal and sends this information to a HOST controller.
- the information includes, among other things, the level (analog and digital), signal-to-noise ratio S / N (analog and digital), bit error rate (purely digital), packet error rate (purely digital) and other appropriate parameters.
- the mathematical unit evaluates the information of the transmitter landscape and signals specific events to the host controller. This decides whether the receiving unit changes to another channel in order to receive better reception there.
- the method according to the invention is implemented mainly in the mathematical unit of the host controller. But only through the interaction between the mathematical unit, host controller and receiving device, the invention can be used effectively.
- the procedure of the mathematical unit is considered more closely.
- the drive of a vehicle in which the device according to the invention is installed is assumed to be from a heavily supplied digital area into an analog, digital mixed area.
- the first quantity that is evaluated by the Mathematical Unit is the level. Based on the level, the reception characteristics of a signal can be monitored relatively accurately.
- the values a o , ß ⁇ , ß 2 must be adjusted in accordance with the processor used so that the filtering can be carried out effectively.
- FIG. 5 shows the graphical representation of the filtered level.
- the level is not just used as an absolute value in the mathematic unit. Important for a quick evaluation of the reception conditions is also the change of the level. This information is obtained when deriving the level.
- the level is filtered using formula 2 and derived from formula 5.
- the controller in the host sets various thresholds for the filtering and the derivation in the mathematical unit. On the basis of these thresholds, the filter block and the derivation block triggers a trigger, on the basis of which the control triggers a signaling for the receiving unit.
- Figure 6 shows a refined according to the above embodiments block diagram.
- bit error rate and the packet error rate are additionally used.
- the mathematical unit has additional triggers that can be evaluated by the controller in the host and used to effectively switch channels in the receiver.
- Figure 7 shows a corresponding block diagram of the host controller with mathematical unit.
- the controller in the host controller receives at least 3 trigger signals from the mathematical unit:
- Level This is divided into an absolute value and the derived value (level changes).
- the most important trigger in the evaluation is the packet error rate. If errors occur here, they are always visible in the picture. The bit error rate and the level give only a tendency of the expected signal curve. The following links were created with this information.
- the triggers for the trigger trigger are changed in order to get new changes • If a trigger is triggered via the BER and no trigger of the PER occurs, the thresholds for trigger triggering are also changed here
- FIG. 1 A block diagram of the host controller implementing the above embodiments is shown in FIG. 1
- This method in conjunction with the mathematical unit used, allows a mobile terrestrial TV signal receiver to perform effective, secure and fast program diversity between analog and digital programs.
- TV signal signals that correspond to a television standard and contain the required information of a television signal (picture sound, useful signals).
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Databases & Information Systems (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Circuits Of Receivers In General (AREA)
- Radio Transmission System (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006038662 | 2006-08-17 | ||
PCT/EP2007/007137 WO2008019808A1 (de) | 2006-08-17 | 2007-08-11 | Empfangseinrichtung und verfahren zur überwachung der empfangseigenschaften eines tv signals und damit verbundenen verbesserung eines programm-diversitys zwischen analogen und digitalen programmen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2055097A1 true EP2055097A1 (de) | 2009-05-06 |
Family
ID=38616334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07786663A Ceased EP2055097A1 (de) | 2006-08-17 | 2007-08-11 | Empfangseinrichtung und verfahren zur überwachung der empfangseigenschaften eines tv-signals und damit verbundenen verbesserung eines programm-diversitys zwischen analogen und digitalen programmen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2055097A1 (de) |
CN (1) | CN101507265A (de) |
WO (1) | WO2008019808A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0689308A1 (de) * | 1994-06-20 | 1995-12-27 | NOKIA TECHNOLOGY GmbH | Verfahren zur Umschaltung eines Sendesignals auf ein anderes Sendesignal in einem Empfänger eines digitalen Rundfunksystems und Empfänger für ein digitales Rundfunksystem |
US5584051A (en) * | 1991-11-01 | 1996-12-10 | Thomson Consumer Electronics Sales Gmbh | Radio broadcast transmission system and receiver for incompatible signal formats, and method therefor |
US5774195A (en) * | 1995-01-24 | 1998-06-30 | Kabushiki Kaisha Toshiba | Broadcasting system discriminating television receiver for differentiating between analog and digital telecast signals |
JP2000165766A (ja) * | 1998-11-24 | 2000-06-16 | Toshiba Corp | デジタル放送受信装置 |
US20050091689A1 (en) * | 2003-10-23 | 2005-04-28 | Samsung Electronics Co., Ltd. | Apparatus and method for controlling broadcast channel using position information of mobile communication terminal |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3690777B2 (ja) * | 1998-08-06 | 2005-08-31 | パイオニア株式会社 | 放送受信機 |
DE19857888A1 (de) * | 1998-12-17 | 2000-10-19 | Becker Gmbh | DAB-Empfänger mit einem RDS-FM-Empfänger |
US7313375B2 (en) * | 2002-05-02 | 2007-12-25 | Lucent Technologies Inc. | Follow-me broadcast reception method and system |
-
2007
- 2007-08-11 CN CN 200780030566 patent/CN101507265A/zh active Pending
- 2007-08-11 EP EP07786663A patent/EP2055097A1/de not_active Ceased
- 2007-08-11 WO PCT/EP2007/007137 patent/WO2008019808A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5584051A (en) * | 1991-11-01 | 1996-12-10 | Thomson Consumer Electronics Sales Gmbh | Radio broadcast transmission system and receiver for incompatible signal formats, and method therefor |
EP0689308A1 (de) * | 1994-06-20 | 1995-12-27 | NOKIA TECHNOLOGY GmbH | Verfahren zur Umschaltung eines Sendesignals auf ein anderes Sendesignal in einem Empfänger eines digitalen Rundfunksystems und Empfänger für ein digitales Rundfunksystem |
US5774195A (en) * | 1995-01-24 | 1998-06-30 | Kabushiki Kaisha Toshiba | Broadcasting system discriminating television receiver for differentiating between analog and digital telecast signals |
JP2000165766A (ja) * | 1998-11-24 | 2000-06-16 | Toshiba Corp | デジタル放送受信装置 |
US20050091689A1 (en) * | 2003-10-23 | 2005-04-28 | Samsung Electronics Co., Ltd. | Apparatus and method for controlling broadcast channel using position information of mobile communication terminal |
Non-Patent Citations (1)
Title |
---|
See also references of WO2008019808A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2008019808A1 (de) | 2008-02-21 |
CN101507265A (zh) | 2009-08-12 |
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