EP0961433A2 - Empfänger für den Empfang von digitalen Rundfunkprogrammen mit einer Vorrichtung zur Auswahl eines Programms aus einer Mehrzahl von vorgespeicherten Programmen - Google Patents

Empfänger für den Empfang von digitalen Rundfunkprogrammen mit einer Vorrichtung zur Auswahl eines Programms aus einer Mehrzahl von vorgespeicherten Programmen Download PDF

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Publication number
EP0961433A2
EP0961433A2 EP99304217A EP99304217A EP0961433A2 EP 0961433 A2 EP0961433 A2 EP 0961433A2 EP 99304217 A EP99304217 A EP 99304217A EP 99304217 A EP99304217 A EP 99304217A EP 0961433 A2 EP0961433 A2 EP 0961433A2
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EP
European Patent Office
Prior art keywords
service
ensemble
information
received
identification information
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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.)
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Application number
EP99304217A
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English (en)
French (fr)
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EP0961433A3 (de
Inventor
Katsuhiko Pioneer Electronic Corporation Toki
Takashi Pioneer Electronic Corporation Miyake
Mikito Pioneer Electronic Corporation Abe
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Pioneer Corp
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Pioneer Electronic Corp
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Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of EP0961433A2 publication Critical patent/EP0961433A2/de
Publication of EP0961433A3 publication Critical patent/EP0961433A3/de
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/38—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space
    • H04H60/41—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas
    • H04H60/43—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas for identifying broadcast channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/37—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying segments of broadcast information, e.g. scenes or extracting programme ID
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]

Definitions

  • the present invention relates to a digital broadcast receiver, and more particularly to a receiver for receiving digital audio broadcasting (hereinafter called "DAB”) which has been put into practical use in Europe.
  • DAB digital audio broadcasting
  • DAB system conforming to Europe Standard (Eureka 147) is known.
  • the DAB incorporates one ensemble which is composed of a plurality of services.
  • Each service is composed of a plurality of components including English and German. Therefore, a user which has selected a certain ensemble is able to obtain information about a plurality of services and components. Therefore, instantaneous switch to another service or component is permitted without a necessity of changing the frequency which is being received.
  • the FM receivers put into practical use permits easy selection of a broadcast station required by a user by providing a plurality of preset channels. Each preset channel is provided with a corresponding storage region. When the user has performed predetermined operations, information of each of required broadcast stations is stored in the storage regions.
  • a usual FM broadcast in which data information or the like is not multiplexed is usually structured such that frequency digital audio is stored in the preset channel.
  • a data multiplex broadcast, such as the RDS in which data information is multiplexed is usually structured such that PI (Program Identification) codes are usually stored together with frequency data.
  • a broadcast station stored in any one of the preset channels When a broadcast station stored in any one of the preset channels is received, a user instructs (channel-recalls) a required channel.
  • a usual FM receiver changes the tuned frequency to stored frequency data.
  • An RDS receiver changes the tuned frequency to stored frequency data. Then, whether or not the received broadcast station is the same as the stored broadcast station is determined by comparing the stored PI code corresponding to the preset channels and the PI code received by the channel recall with each other.
  • the DAB receiver Since the ensemble of the DAB is composed of a plurality of services, the DAB receiver performs a process for selecting the service required by the user from the services to reproduce the service. Therefore, the following structure convenient for a user can be constituted. That is, information about the service required by the user is stored as well as frequency data to correspond to the preset channels of the DAB receiver. Thus, the channel recall is performed such that an ensemble is selected in accordance with stored frequency data made correspond to the preset channel. Then, a service which is the same as the required service in the selected ensemble is selected so as to be reproduced.
  • the DAB sometimes has a structure that the same service (having the same SId (Sid: Service Identifier)) exists in a plurality of ensembles. For example, a state is realized in which a service having the same SId as the SId stored in the preset channel exists in the ensemble which is being selected.
  • SId Service Identifier
  • the present invention has been made to improve the preset call of the DAB receiver, and therefore an object of the present invention is to provide a digital broadcast receiver which is capable of quickly receiving a service required by a user.
  • a digital broadcast receiver for receiving a digital audio broadcast which transmits a digital signal indicating identification information of each of services which constitute an ensemble together with audio information, said digital broadcast receiver comprising: means for determining whether or not the service having predetermined identification information is selectable by the ensemble which is being received; and means for selecting the service when the service can be selected.
  • a digital broadcast receiver according to the first aspect of the invention, wherein another ensemble is tuned to when the service having predetermined identification information cannot be selected by the ensemble which is being received, and said determining means determines whether or not the service having predetermined identification information can be selected by the tuned ensemble.
  • a digital broadcast receiver according to the second aspect of the invention, further comprising a storage portion for storing frequency information of ensembles and predetermined identification information which are made corresponding to one another, wherein when the service having predetermined identification information cannot be selected by the ensemble which is being received, frequency information corresponding to predetermined identification information is read from the storage portion, and another ensemble is tuned to in accordance with read frequency information.
  • Fig. 1 is a block diagram showing a DAB receiver according to the embodiment of the present invention.
  • the DAB receiver incorporates a DAB receiving portion 1, a DAB control unit 2, a system control unit 3, a display unit 4, a key input portion 5, an amplifier 6 and a speaker unit 7.
  • the DAB receiving portion 1 incorporates an FFT (Fast Fourier Transformation) portion for demodulating a transmitted OFDM wave, a viterbi decoding portion for correcting an error and an audio decoder for decoding compressed sound data to original audio data. Since the foregoing elements have been disclosed in a variety of documents, the structures of the foregoing elements are omitted from description.
  • FFT Fast Fourier Transformation
  • the DAB control unit 2 controls the DAB receiving portion 1 and stores, in a storage portion (not shown), a variety of information data items contained in an FIC (Fast Information Channel) which is demodulated by the DAB receiving portion 1.
  • FIC Fast Information Channel
  • Information above includes SId information for use in the present invention, Asu (Announcement Support) information and Asw (Announcement switching) information.
  • the DAB control unit 2 performs required processes in response to a requirement made by the system control unit 3.
  • the processes include a process required to perform a preset call to be described later.
  • the system control unit 3 totally controls the receiver. In response to information input from the key input portion 5, the system control unit 3 performs corresponding control in cooperation with the DAB control unit 2.
  • the corresponding control includes, for example, change in the frequency.
  • the system control unit 3 controls the display unit 4 by outputting display information to the display unit 4.
  • the DAB receiver has the foregoing schematic structure.
  • Fig. 2 is a flow chart of the operation of the DAB control unit 2 which performs the preset call according to the present invention.
  • the foregoing flow chart is performed when a preset channel, which must be recalled, has been instructed through the key input portion 5 and thus the system control unit 3 communicated with the instruction has instructed the DAB control unit 2 to perform the foregoing process.
  • the SId of the services required by a user and information about ensembles each having a possibility that the SId is provided are previously stored in the storage portion provided for each of the preset channels.
  • the DAB control unit 2 In step S1, reads information stored in a memory region corresponding to the instructed preset channel. Specifically, stored SId information is read.
  • step S2 determines the ensemble which is being received. If a determination is made in step S2 that any one of the ensembles is being received, the DAB control unit 2 determines that the ensemble which is being received includes the service having the SId called in step S1 exists (step S3).
  • the required service can be selected and reproduced without a necessity of changing the frequency which is being received.
  • step S4 ensemble ID (Ensemble Identifier) of the ensemble which is being received is made correspond to the recalled preset channel so as to be stored in the storage portion.
  • step S5 frequency information of the ensemble which is being received is made correspond to the recalled preset channel so as to be stored in the storage portion.
  • the service having the required SId is selected and the service is reproduced through the speaker unit 7 in step S6.
  • step S7 If a determination is made that no ensemble is being received (step 2; No), or if the service having the corresponding SId does not exist in the ensemble which is being received (step S3; No), the operation proceeds to step S7.
  • step S7 information about the frequency of the ensemble, which has been stored to correspond to the recalled preset channel, is read.
  • the DAB receiving portion 1 is controlled to tune in to the ensemble indicated with the foregoing frequency.
  • step S9 When a determination is made that the ensemble can be received at the tuned frequency (step S9; Yes), a determination is made whether or not the service having the required SId exists in the ensemble in accordance with FIC information obtained from the ensemble (step S10).
  • step S4 the ensemble ID of the ensemble which is being received is made correspond to the recalled preset channel so as to be stored in the memory to cope with a preset call which will be performed.
  • step S5 the frequency of the ensemble which is being received is made correspond to the recalled preset channel so as to be stored in the memory.
  • the service having the required SId is selected so as to be reproduced from the speaker unit 7 in step S6.
  • step S9 When a determination is made that the ensemble cannot be received in step S9 or when a determination is made that the required service is not contained in the ensemble in spite of detection of the ensemble which can be received (step S10; N), the reception zone is seek up/down to search another ensemble (step S11).
  • step S12 When the ensemble which can be received has been detected, a determination is made similarly such that the required service exists by comparing the SId (step S12). If a determination is made that the required service exists, the operation is returned to step S4 so that information about the ensemble having the required service is made correspond to the preset channel so as to be stored in the memory. After the above-mentioned process has been completed, the service having the required SId is selected so as to be reproduced from the speaker unit 7 in step S6.
  • step S12 If a determination is made in step S12 that the required service does not exist, the required service cannot be received at present. Therefore, the foregoing fact is communicated to the system control unit 3.
  • the system control unit 3 displays the foregoing fact on the display unit 4. The operation for recalling the preset channel is performed as described above.
  • Figs. 3 to 5 are diagrams showing the process of the search which is performed during the preset call shown in Fig. 2. Note that an assumption is made in Figs. 3 to 5 that three ensembles (each having two services), which can be received, exist in the reception frequency band and a component in service 1 of ensemble 1 is being selected and produced. Moreover, an assumption is made that frequency information of ensemble 2 and SId information indicating a required service (an assumption is made that it is service 2) have been stored in the preset channel.
  • the DAB receiver selects and reproduces the service 2 in the ensemble 2.
  • a search process for continuously changing the reception frequency is performed to determine whether or not the ensemble, which can be received, exists in the reception frequency band.
  • the service 2 registered in the preset channel does not exists in the ensemble 2 when the preset call has been performed. Therefore, the search process is performed. As a result of the search, a determination is made that the ensemble 3 can be received. Also a determination is made that the required service exists in the ensemble 3.
  • the service 2 determines whether or not information about the service which coincides with the SId (the service 2) can be obtained from information about the selected ensemble (the ensemble 3).
  • the service 2 exists in the ensemble 2. Therefore, the two SId coincide with each other.
  • the DAB receiver selects and reproduces the service 2 in the ensemble 3.
  • a last service (service 1: a service which is provided before instruction of the preset call) is selected and reproduced.
  • the present invention when a service having required identification information is selected, a determination is made whether or not the service having the required identification information can be selected in the ensemble which is being received. Therefore, when the same services exist in the current ensemble, the required service can quickly be selected and reproduced.
  • the present invention is applied to the recall process of the preset channel and the service having required identification information can be selected in the ensemble which is being received, the necessity of changing the frequency, which is being selected, to the frequency of the ensemble stored in the storage portion can be eliminated. Therefore, time required to hear the contents of the service can be shortened.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
EP99304217A 1998-05-28 1999-05-28 Empfänger für den Empfang von digitalen Rundfunkprogrammen mit einer Vorrichtung zur Auswahl eines Programms aus einer Mehrzahl von vorgespeicherten Programmen Withdrawn EP0961433A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16418798 1998-05-28
JP10164187A JPH11340858A (ja) 1998-05-28 1998-05-28 ディジタル放送受信機

Publications (2)

Publication Number Publication Date
EP0961433A2 true EP0961433A2 (de) 1999-12-01
EP0961433A3 EP0961433A3 (de) 2001-09-12

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EP99304217A Withdrawn EP0961433A3 (de) 1998-05-28 1999-05-28 Empfänger für den Empfang von digitalen Rundfunkprogrammen mit einer Vorrichtung zur Auswahl eines Programms aus einer Mehrzahl von vorgespeicherten Programmen

Country Status (2)

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EP (1) EP0961433A3 (de)
JP (1) JPH11340858A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1551105A1 (de) * 2002-10-09 2005-07-06 Kabushiki Kaisha Kenwood Dab-rundfunkempfängervorrichtung
EP1742394A2 (de) 2005-07-06 2007-01-10 Samsung Electronics Co., Ltd. Empfänger für den Empfang vom terrestrischen digitalen Multimediarundfunk, mit Verwendung eines imaginären Kanals für den Empfang von Rundfunkdiensten
EP1742392A3 (de) * 2005-07-06 2012-04-25 Samsung Electronics Co., Ltd. Gerät und Verfahren für den Empfang vom digitalen Rundfunk

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"OFFICIAL EBU TECHNICAL TEXTS. ÖEBU STATEMENT D74-1992 EBU EXPECTATIONS FOR FIRST-GENERATION CONSUMER DAB RECEIVERS APPROVED FOR PUBLICATION DECEMBER 1992" EBU REVIEW- TECHNICAL,BE,EUROPEAN BROADCASTING UNION. BRUSSELS, no. 255, 1993, pages 57-63, XP000354456 ISSN: 0251-0936 *
RILEY J L: "THE DAB MULTIPLEX AND SYSTEM SUPPORT FEATURES" EBU REVIEW- TECHNICAL,BE,EUROPEAN BROADCASTING UNION. BRUSSELS, no. 259, 21 March 1994 (1994-03-21), pages 11-23, XP000450541 ISSN: 0251-0936 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1551105A1 (de) * 2002-10-09 2005-07-06 Kabushiki Kaisha Kenwood Dab-rundfunkempfängervorrichtung
EP1551105A4 (de) * 2002-10-09 2011-07-20 Kenwood Corp Dab-rundfunkempfängervorrichtung
EP1742394A2 (de) 2005-07-06 2007-01-10 Samsung Electronics Co., Ltd. Empfänger für den Empfang vom terrestrischen digitalen Multimediarundfunk, mit Verwendung eines imaginären Kanals für den Empfang von Rundfunkdiensten
EP1742394A3 (de) * 2005-07-06 2011-05-04 Samsung Electronics Co., Ltd. Empfänger für den Empfang vom terrestrischen digitalen Multimediarundfunk, mit Verwendung eines imaginären Kanals für den Empfang von Rundfunkdiensten
EP1742392A3 (de) * 2005-07-06 2012-04-25 Samsung Electronics Co., Ltd. Gerät und Verfahren für den Empfang vom digitalen Rundfunk

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Publication number Publication date
EP0961433A3 (de) 2001-09-12
JPH11340858A (ja) 1999-12-10

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