WO2000019720A1 - Verfahren zum empfang und zur darstellung von fernsehsendungen mit sendungsartkennzeichen - Google Patents
Verfahren zum empfang und zur darstellung von fernsehsendungen mit sendungsartkennzeichen Download PDFInfo
- Publication number
- WO2000019720A1 WO2000019720A1 PCT/DE1999/002953 DE9902953W WO0019720A1 WO 2000019720 A1 WO2000019720 A1 WO 2000019720A1 DE 9902953 W DE9902953 W DE 9902953W WO 0019720 A1 WO0019720 A1 WO 0019720A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- television
- signal
- resolution
- pictures
- program
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
-
- 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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/454—Content or additional data filtering, e.g. blocking advertisements
-
- 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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/4508—Management of client data or end-user data
- H04N21/4532—Management of client data or end-user data involving end-user characteristics, e.g. viewer profile, preferences
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
- H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
- H04N7/0887—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of programme or channel identifying signals
Definitions
- the invention relates to a method for receiving and displaying a sequence of television pictures of a television program, which are composed line by line from pixels and which are transmitted via an analog television signal, which contains a program type identifier with details of the type of television program.
- the television signal broadcast by the television stations often contains further data from information services.
- the vertical blanking interval is used to transmit text and graphics information that can be displayed on the screen of a television set.
- the closed caption system works similarly. B. is used in the United States.
- the VPS signal which is a
- the standard for programming video recorders which has become particularly important for the automatic start of video recorders at the beginning of the program, is broadcast with the television signal.
- This additional data can be used to identify the program type of the respective television program.
- additional services are transmitted, which include a range of information that classifies the television program just received according to its content. This information can be evaluated by a decoder, the so-called violence chip.
- the screen of the television set is then switched to black, for example, or information is displayed. When switching to black, e.g. B. because a youthful television show is received, the viewer can not immediately see whether the described Protection mechanism has responded or whether the TV may be defective.
- the object of the present invention is therefore to provide a method for receiving and displaying television programs with an identifier for the type of program, in which the functional state of the television set is immediately recognizable, even if the television program broadcast by a television station is not displayed on the television screen should.
- the invention has the advantage that a viewer receives references to the television program and the content of the television images is only revealed to a very limited extent due to the reduced recognition of the television images.
- the viewer sees the television pictures with reduced resolution and recognizes no details.
- a television picture that has a mosque effect due to the reduced resolution will be perceived as less disturbing than the complete blacking of the screen.
- the reduction in the resolution of the television pictures is achieved in that the received television pictures are subsampled both in the vertical and in the horizontal picture direction and thus the number of independent picture elements is reduced. If, for example, only every fifth pixel from each image line is scanned, the unscanned ones are displayed when the television picture is displayed with reduced resolution
- Pixels replaced by the scanned pixels A certain scanned image point is displayed 5 times in succession. Similarly, if every fifth line is scanned, the unscanned lines are replaced by those that have been scanned. To do this, a certain scanned line is repeated on the image until the next scanned image line is reached.
- the television signal is displayed directly after it has been converted into a digital television signal in the analog-digital converter. If the analog-to-digital converter has a resolution that is sufficient only for evaluating the program type identifier, the resolution of the television pictures which have a higher resolution than the program type identifier is reduced.
- Figure 1 is a block diagram of a first embodiment of the inventive method
- Figure 2 is a block diagram of a further embodiment of the method according to the invention.
- the invention is based on the fact that an analog television signal broadcast by a television station with a program type identifier SK, which contains information on the type of television program, can be received.
- the program type identifier SK is stamped, for example, into the vertical blanking interval of the television signal FS, as is known from teletext data.
- a television program is transmitted as a sequence of television images FB.
- the television pictures FB are built up line by line in the known manner, each line being composed of pixels.
- the shipment type identifier SK can be written with one bit.
- the logical state 1 signal then, for example, broadcasts that contain content that is harmful to young people.
- the shipment is ordered ⁇ artkenn Lake SK in this example, the logic value 0 to ⁇ . If the television program is classified according to more than two criteria, a higher value than one bit is required for the program type identifier SK.
- the analog television signal FS is received by a receiving device 2 via an antenna 1.
- the television signal FS is converted into the baseband by the receiving device 2 and is present as a so-called color picture blanking signal FBAS.
- the receiving device 2 contains, for example, tuner, intermediate frequency stage and demodulator.
- the television signal FBAS converted into the baseband is fed to a selection circuit 3, a mosaic filter 4 and an analog-digital converter 5.
- the television signal FBAS is undersampled in the horizontal and vertical directions of the television images transmitted with the television signal.
- the mosaic filter 4 At an output of the mosaic filter 4, only received every nth line of the received television pictures FB and only every mth pixel in each of these nth lines.
- the mosaic filter 4 In order to maintain the number of pixels of the received television pictures FB, the mosaic filter 4 repeatedly outputs the th pixels and the nth lines of the television pictures FB.
- a first line of one of the television pictures FB is read into a line memory 6, which is connected to the mosaic filter 4. Only every fifth pixel from the first line is to be forwarded to the selection circuit 3. The first pixel of the first line is output 5 times in succession. The sixth pixel is then output 5 times in succession, then the eleventh pixel 5 times in succession, and so on, until the first line is complete. B eispielmik should only every sixth line to be scanned, the first line is output 6 times in succession gradually from the mosaic filter 4, so that the first to sixth Zei ⁇ le same structure. The seventh row of the one of the television images FB, the ge over the analo ⁇ television signal FS are transferred from the seventh th row obtained.
- the analog-digital converter 5 From the analog television signal FS, the analog-digital converter 5 generates a digital television signal FSD, which is fed to a separating device 7. This separates the program type identifier SK from the digital television signal FSD. It can also be designed to separate teletext data.
- This consignment type identifier SK is evaluated in the selection circuit 3. If a specific identification signal KS is determined in the shipment type identifier SK, a signal path from the mosaic filter 4 to a screen control unit 8 is released by the selection circuit 3. If no identification signal KS is found in the program type identifier SK, the selection circuit 3 releases another signal path from the receiving device 2 to the screen control unit 8, so that the television signal FBAS reaches the screen control unit 8 directly. A television signal FBAS subsampled by the mosaic filter 4 therefore only feeds the screen control unit 8 if the selection circuit 3 detects the identification signal KS.
- the screen control unit 8 Depending on the result of the selection circuit 3, the screen control unit 8 generates an RGB signal from the unfiltered television signal FBAS or from the television signal filtered in the mosaic filter 4, with which a screen 9 is controlled. If the identification signal KS is not determined in the program type identifier SK, the television images FB of the television program are transmitted as they are transmitted by the analog television signal FS are displayed on screen 9. If the identifier ⁇ signal KS is recognized in the program type identifier SK, the television pictures FB are displayed with a coarser resolution than a resolution specified on the transmitter side.
- the mosaic filter 4 and the separating device 7 are controlled by a processor 10. This also allows a signal flow from the separating device 7 to the filter 4.
- a data value can be encoded in the identification signal KS, which is evaluated by the processor 10 and from which the degree of vertical and the degree of horizontal subsampling of the mosaic filter 4 is determined. It is thus possible to assign different resolutions of the television pictures FB to differently classified television programs.
- the identification signal KS has, for example, a data value which causes the processor 10 to control the filter 4 in such a way that the subsampling is very strong. This gives the television pictures FB a very rough mosaic pattern. Details of the contents of the television pictures FB can then no longer be recognized.
- FIG. 2 Another embodiment according to FIG. 2 advantageously uses the analog-digital converter 5, which supplies the digital television signal FSD for the separating device 7.
- the analog television signal FS is received by the receiving device 2 via the antenna 1.
- the television signal FBAS from the receiving device 2 is fed to the selection circuit 3 and the analog-digital converter 5.
- the selection circuit 3 is also fed with the digital television signal FSD, which is obtained in the analog-to-digital converter 5 from the analog television signal FS.
- the digital television signal FSD contains both the data of the television program and that of the program type identifier SK.
- the separating device 7 separates the program type identifier SK from the digital television signal FSD and feeds it to the selection circuit 3.
- the analog-to-digital converter 5 need only have a low resolution for the loss-free analog-to-digital conversion of the item type identifier SK.
- the data separated by the separating device 7 are preferably fed to a teletext processing device, which is not shown in the figures. This carries out the processing of teletext data contained in the television signal FS.
- a resolution for the analog-digital converter 5 that is less than a resolution that would be necessary for an error-free digital conversion of the television pictures FB is sufficient.
- the analog-digital converter 5 has a resolution which is lower than the resolution required for error-free digital conversion of the television pictures.
- the digital television signal FSD is supplied to the image control unit 8 with the reduced resolution.
- the television images FB are then displayed on the screen 9 with reduced resolution.
- the recognizability of the television images FB can be further reduced by the RGB signal being quantized.
- the RGB signal being quantized.
- all the pixels on the screen 9 are only displayed with two brightness levels, e.g. B. Black and white.
- tertiary quantization exactly one of three brightness levels is assigned to each RGB signal.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Television Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99969879A EP1118221A1 (de) | 1998-09-28 | 1999-09-15 | Verfahren zum empfang und zur darstellung von fernsehsendungen mit sendungsartkennzeichen |
JP2000573094A JP2002526995A (ja) | 1998-09-28 | 1999-09-15 | 放送形式標識によりテレビ放送を受信及び表示するための方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19844403A DE19844403C1 (de) | 1998-09-28 | 1998-09-28 | Verfahren zum Empfang und zur Darstellung von Fernsehsendungen mit Sendungsartkennzeichen |
DE19844403.6 | 1998-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000019720A1 true WO2000019720A1 (de) | 2000-04-06 |
Family
ID=7882493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/002953 WO2000019720A1 (de) | 1998-09-28 | 1999-09-15 | Verfahren zum empfang und zur darstellung von fernsehsendungen mit sendungsartkennzeichen |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1118221A1 (de) |
JP (1) | JP2002526995A (de) |
KR (1) | KR100615500B1 (de) |
CN (1) | CN1320332A (de) |
DE (1) | DE19844403C1 (de) |
WO (1) | WO2000019720A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008072745A (ja) * | 2001-11-08 | 2008-03-27 | Hitachi Ltd | 情報出力装置、情報受信装置、情報出力方法および情報送信方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101292205B1 (ko) * | 2006-10-04 | 2013-08-01 | 삼성전자주식회사 | 데이터 송수신 장치 및 방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5195135A (en) * | 1991-08-12 | 1993-03-16 | Palmer Douglas A | Automatic multivariate censorship of audio-video programming by user-selectable obscuration |
EP0665688A2 (de) * | 1993-12-29 | 1995-08-02 | Kabushiki Kaisha Toshiba | Verfahren zum Anordnen von Videodaten und Vorrichtung zum Kodieren/Dekodieren von Videodaten |
JPH07336658A (ja) * | 1994-06-03 | 1995-12-22 | Sony Corp | テレビジョン信号の放送システム及びテレビジョン受信装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4930158A (en) * | 1987-09-02 | 1990-05-29 | Vogel Peter S | Selective video playing system |
DE29620150U1 (de) * | 1996-11-20 | 1997-02-20 | Kau, Michael, 53783 Eitorf | Schaltungsanordnung für ein Fernsehgerät zur Freigabe und/oder Sperrung der Wiedergabe von vorbestimmbaren Programmen |
DE19700244A1 (de) * | 1997-01-07 | 1998-07-09 | Prisma Gmbh & Co Product Manag | Fernsehüberwachungsvorrichtung |
-
1998
- 1998-09-28 DE DE19844403A patent/DE19844403C1/de not_active Expired - Fee Related
-
1999
- 1999-09-15 WO PCT/DE1999/002953 patent/WO2000019720A1/de not_active Application Discontinuation
- 1999-09-15 KR KR1020017003890A patent/KR100615500B1/ko not_active IP Right Cessation
- 1999-09-15 JP JP2000573094A patent/JP2002526995A/ja active Pending
- 1999-09-15 CN CN99811467A patent/CN1320332A/zh active Pending
- 1999-09-15 EP EP99969879A patent/EP1118221A1/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5195135A (en) * | 1991-08-12 | 1993-03-16 | Palmer Douglas A | Automatic multivariate censorship of audio-video programming by user-selectable obscuration |
EP0665688A2 (de) * | 1993-12-29 | 1995-08-02 | Kabushiki Kaisha Toshiba | Verfahren zum Anordnen von Videodaten und Vorrichtung zum Kodieren/Dekodieren von Videodaten |
JPH07336658A (ja) * | 1994-06-03 | 1995-12-22 | Sony Corp | テレビジョン信号の放送システム及びテレビジョン受信装置 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04 30 April 1996 (1996-04-30) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008072745A (ja) * | 2001-11-08 | 2008-03-27 | Hitachi Ltd | 情報出力装置、情報受信装置、情報出力方法および情報送信方法 |
JP4572923B2 (ja) * | 2001-11-08 | 2010-11-04 | 株式会社日立製作所 | 映像情報出力装置および映像情報出力方法 |
Also Published As
Publication number | Publication date |
---|---|
DE19844403C1 (de) | 2000-04-20 |
KR20010088815A (ko) | 2001-09-28 |
CN1320332A (zh) | 2001-10-31 |
JP2002526995A (ja) | 2002-08-20 |
KR100615500B1 (ko) | 2006-08-25 |
EP1118221A1 (de) | 2001-07-25 |
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