EP0957600B1 - Empfänger für den Empfang von digitalen Rundfunkprogrammen, die Informationen über mehrere Programmen enthalten - Google Patents

Empfänger für den Empfang von digitalen Rundfunkprogrammen, die Informationen über mehrere Programmen enthalten Download PDF

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Publication number
EP0957600B1
EP0957600B1 EP99303249A EP99303249A EP0957600B1 EP 0957600 B1 EP0957600 B1 EP 0957600B1 EP 99303249 A EP99303249 A EP 99303249A EP 99303249 A EP99303249 A EP 99303249A EP 0957600 B1 EP0957600 B1 EP 0957600B1
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EP
European Patent Office
Prior art keywords
information
service
services
stored
storage portion
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.)
Expired - Lifetime
Application number
EP99303249A
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English (en)
French (fr)
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EP0957600A2 (de
EP0957600A3 (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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Filing date
Publication date
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Publication of EP0957600A2 publication Critical patent/EP0957600A2/de
Publication of EP0957600A3 publication Critical patent/EP0957600A3/de
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Publication of EP0957600B1 publication Critical patent/EP0957600B1/de
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/40—Arrangements for broadcast specially adapted for accumulation-type receivers
    • 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
    • H04H60/27—Arrangements for recording or accumulating broadcast information or broadcast-related information
    • 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
    • H04H60/68—Systems specially adapted for using specific information, e.g. geographical or meteorological information
    • H04H60/72—Systems specially adapted for using specific information, e.g. geographical or meteorological information using electronic programme guides [EPG]
    • 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
    • H04H60/68—Systems specially adapted for using specific information, e.g. geographical or meteorological information
    • H04H60/73—Systems specially adapted for using specific information, e.g. geographical or meteorological information using meta-information
    • H04H60/74—Systems specially adapted for using specific information, e.g. geographical or meteorological information using meta-information using programme related information, e.g. title, composer or interpreter

Definitions

  • the present invention relates to a digital broadcast receiver, and more particularly to a receiver for receiving a digital audio broadcast (hereinafter called "DAB”) which is at the practical phase in Europe.
  • DAB digital audio broadcast
  • the DAB system As a system for transmitting broadcasting waves including data signals including digital audio signals and formed into a predetermined format and receiving the broadcasting waves, the DAB system abided by the Europe Standard (Eureka 147) is available.
  • Eureka 147 the Europe Standard
  • one ensemble is composed of a plurality of services.
  • Each service is composed of a plurality of components, such as English and German. Therefore, a user receives a certain ensemble to obtain information about a plurality of services and components included in the ensemble. Moreover, instantaneous switching to a different service or a component is permitted.
  • a method (hereinafter called a "first method") may be employed with which the order of the services is determined in the service receiving order.
  • a service which must be selected next is determined in accordance with the determined order.
  • Another method (hereinafter called a “second method”) may be employed with which a rule for determining the order is previously provided to determine, in the receiver, the order of information about the received service so as to determine the service which must next be selected in accordance with the determined order.
  • the predetermined order determining rule is arranged such that the cover code (the third digit) is ignored and one uppermost digit and two lower digits are employed to determine the order. If the first digit and the second digit coincide with each other, an example process for determining the order by using all of the four digits results in the order of received data being determined as B211, B313, B413 and B315. Assuming that the service (the current service) which is being selected is B413 similarly to the foregoing example and up-and-down switching is instructed, control is performed to select the service B315 in a case of upward switching. Similarly, downward switching causes the control to be performed to select the service B313.
  • the capacity of a memory provided for the receiver is too small with respect to the quantity of transmitted information, there arises a problem in that all of the information items cannot be stored in the receiver. If the receiver has a memory capacity corresponding to three services in the above-mentioned case, information in a quantity corresponding to one service cannot be stored, that is, information is lost.
  • an object of the present invention is to provide a digital broadcast receiver which is capable of storing information which is important to control the receiver without a loss even if information in a quantity larger than the capacity of the memory provided for the receiver is supplied.
  • a digital broadcast receiver for receiving a digital audio broadcast which transmits digital signals indicating information about a plurality of services which constitute an ensemble such that the digital signals are transmitted together with audio information of the plural services
  • the digital broadcast receiver comprising: a storage portion which is capable of storing information relating to the services in a quantity corresponding to the plural services; and determining means for determining information about the services which must be stored in the storage portion in accordance with information about the plural services obtained from the ensemble which is being received, wherein the determining means determines information about the non-selected services which must be stored in the storage portion in accordance with information about the service which is being selected.
  • a digital broadcast receiver having a structure according to the first aspect of the invention, wherein the determining means determines information about the services which must be stored in the storage portion also in accordance with information about the services stored in the storage portion.
  • a digital broadcast receiver having a structure according to the second aspect of the invention, wherein information about the services includes identifying information for identifying the services, and the determining means determines the order of the plural services obtained from the ensemble which is being received in accordance with a predetermined rule for determining the order and identifying information and stores, in the storage portion, at least information about the services having the orders across the service which is being selected.
  • Fig. 1 is a block diagram showing a DAB receiver according to an 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, a speaker unit 7 and a storage portion 8.
  • the DAB receiving portion 1 includes an FFT (Fast Fourier Transform) portion for demodulating a transmitted OFDM wave, a Viterbi decoding portion for correcting an error and an audio decoder for restoring compressed audio data to original audio data. Since the above-mentioned structure is a known fact disclosed in documents, the foregoing structure is omitted from description.
  • FFT Fast Fourier Transform
  • the DAB control unit 2 controls the DAB receiving portion 1 and reads a variety of information data items included in FIC (Fast Information Channel) which is demodulated by the DAB receiving portion 1 so as to store information data for each service in the storage portion 8.
  • FIC Full Information Channel
  • Information above includes SId information for use in the present invention, PTY (Program Type) codes indicating the contents of services and Asu (Announcement Support) information.
  • the DAB control unit 2 responds to a requirement issued from the system control unit 3 to perform required processes.
  • the processes include a process relating to switching of the selected service.
  • the system control unit 3 controls the overall body of the receiver. Specifically, the system control unit 3 performs a corresponding control in cooperation with the DAB control unit 2 in accordance with information supplied from the key input portion 5. The system control unit 3 controls the display unit 4 by outputting display information to the display unit 4.
  • the DAB receiver has the above-mentioned schematic structure.
  • Fig. 2 is a flow chart of the operation of the DAB control unit 2 according to the present invention and arranged to perform a process for storing data.
  • the DAB control unit 2 stores received information about the service in a storage area (hereinafter called a "storage area (C)") in the storage portion 8.
  • a storage area hereinafter called a "storage area (C)
  • step S2 If a determination is made in step S2 that received information about the service is not information about the current service (step S2: non-coincident), the process is shifted to step S4 so that a comparison of the orders is performed. At this time, the received SId and the SId of the current service are compared with each other.
  • step S5 If a determination is made as a result of a comparison made in step S4 that received information about the service is information about the service which is positioned before the current service, whether or not information has been stored in a storage area (hereinafter called a "storage area (A)") provided for the inside portion of the storage portion 8 (step S5).
  • a storage area hereinafter called a "storage area (A)"
  • step S5 If a determination is made in step S5 that no information is stored in the storage area (A), information about the service received this time is stored in the storage area A (step S6). If a determination is made in step S5 that information has been stored in the storage area (A), the operation is shifted to step S7 so that the order of information and the order of information stored in the storage area (A) are compared with each other.
  • step S4 the comparison of the orders is performed similarly to that which is performed in step S4.
  • information stored in the storage area (A) or received information about the service received this time which is near the current service is determined.
  • step S7 If a determination is made in step S7 that information of the service received this time is nearer the current service, the operation is shifted to step S6 so that information above is stored in the storage area (A). Thus, information is updated. If a determination is made in step S7 that information stored in the storage area (A) is nearer the current service, update of information is not required. Therefore, the process is completed.
  • step S8 If a determination is made as a result of the comparison made in step S4 that information about the service received this time is positioned after the current service, whether or not information has been stored in the storage area (hereinafter called a storage area (B)) provided for the inside portion of the storage portion 8 is determined (step S8).
  • a storage area hereinafter called a storage area (B)
  • step S8 If a determination is made in step S8 that no information is stored in the storage area (B), information about the service received this time is stored in the storage area (B) (step S9). If a determination is made in step S8 that information has been stored in the storage area (B), the operation is shifted to step S10 so that a comparison is made with the order of information stored in the storage area (B).
  • the comparison of the orders is performed similarly to the comparison which is made in steps S4 and S7.
  • information in the storage area (B) or information about the service received this time which is nearer the current service is determined.
  • step S10 If a determination is made in step S10 that information of the service received this time is nearer the current service, the operation is shifted to step S9. Thus, information above is stored in the storage area (B). As a result, information is updated. If a determination is made in step S10 that information stored in the storage area (B) is nearer the current service, update of information is not required. Therefore, the process is completed.
  • step S1 If a determination is made in step S1 that no service is being selected, no current service serving as a reference exists.
  • data of the received service is stored in a data area provided for the inside portion of the storage portion 8 and arranged to make a list (step S11).
  • the data area for making the list has a region in which data of N services can be stored.
  • a stored data group can be displayed on the display unit 4 in the form of a list owning to the operation of the key input portion 5. Storage of data is performed such that, for example, the second method of determining the order is employed to store data for N services in the ascending order of the SId.
  • the user is able to detect services which can be received.
  • FIGs. 3A to 3D are diagrams showing a state in which data of the service is stored in the storage areas (A), (B) and (C) in the storage portion 8 as a result of the storage process.
  • an assumption is made that extraction of the SId in the order as B211, B413, B312 and B315 is performed.
  • the current service is B413.
  • Another control may be performed in which when a certain service has been selected, information about the selected service is given priority to be previously stored in the storage area (C).
  • the structure is formed such that information about the service which must be stored in the storage portion is determined in accordance with information about at least the service which is being selected. Therefore, if information in a quantity larger than the capacity of the memory provided for the receiver is supplied, information which is important to control the receiver can be stored without a lost.
  • only information about the services having identification information across identification information of the service which is being selected is stored in the storage portion 8.
  • the structure is not limited to the foregoing structure. If the capacity of the memory is sufficiently large, it is preferable that information about larger number of services including at least the two information items is stored in the storage portion 8.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)

Claims (3)

  1. Digitaler Rundfunkempfänger zum Empfangen von digitalem Audio-Rundfunk, der digitale Signale, die Informationen über eine Vielzahl von Diensten anzeigen, die ein Ensemble bilden, so sendet, dass die digitalen Signale zusammen mit Audio-Informationen der mehreren Dienste gesendet werden, wobei der digitale Rundfunkempfänger umfasst:
    einen Speicherabschnitt (8), der Informationen, die sich auf die Dienste beziehen, in einer Menge speichern kann, die den mehreren Diensten entsprechen; und
    eine Ermittlungseinrichtung (2) zum Ermitteln von Informationen über die Dienste, die in dem Speicherabschnitt (8) entsprechend Informationen über die mehreren Dienste gespeichert werden müssen, die von dem Ensemble bezogen werden, das empfangen wird,
    dadurch gekennzeichnet, dass
    die Ermittlungseinrichtung (2) Informationen über nicht ausgewählte Dienste ermittelt, die in dem Speicherabschnitt (8) entsprechend Informationen über den Dienst gespeichert werden müssen, der ausgewählt wird.
  2. Digitaler Rundfunkempfänger nach Anspruch 1, wobei die Ermittlungseinrichtung (2) Informationen über die Dienste, die in dem Speicherabschnitt (8) gespeichert werden müssen, auch entsprechend Informationen über die Dienste ermittelt, die in dem Speicherabschnitt (8) gespeichert sind.
  3. Digitaler Rundfunkempfänger nach Anspruch 2, wobei Informationen über die Dienste Identifizierungsinformationen zum Identifizieren der Dienste enthalten und die Ermittlungseinrichtung (2) die Reihenfolge der mehreren Dienste, die von dem Ensemble bezogen werden, das empfangen wird, entsprechend einer vorgegebenen Regel zum Feststellen der Reihenfolge und der identifizierenden Informationen ermittelt und in dem Speicherabschnitt (8) wenigstens Informationen über die Dienste, die die Reihenfolgen haben, für den gesamten Dienst speichert, der ausgewählt wird.
EP99303249A 1998-04-28 1999-04-27 Empfänger für den Empfang von digitalen Rundfunkprogrammen, die Informationen über mehrere Programmen enthalten Expired - Lifetime EP0957600B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13453298 1998-04-28
JP13453298A JP3591811B2 (ja) 1998-04-28 1998-04-28 ディジタル放送受信機

Publications (3)

Publication Number Publication Date
EP0957600A2 EP0957600A2 (de) 1999-11-17
EP0957600A3 EP0957600A3 (de) 2001-09-12
EP0957600B1 true EP0957600B1 (de) 2008-11-05

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EP99303249A Expired - Lifetime EP0957600B1 (de) 1998-04-28 1999-04-27 Empfänger für den Empfang von digitalen Rundfunkprogrammen, die Informationen über mehrere Programmen enthalten

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EP (1) EP0957600B1 (de)
JP (1) JP3591811B2 (de)
DE (1) DE69939853D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8364295B2 (en) 2000-10-12 2013-01-29 Bose Corporation Interactive sound reproducing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8364295B2 (en) 2000-10-12 2013-01-29 Bose Corporation Interactive sound reproducing
US8401682B2 (en) 2000-10-12 2013-03-19 Bose Corporation Interactive sound reproducing
US8977375B2 (en) 2000-10-12 2015-03-10 Bose Corporation Interactive sound reproducing
US9223538B2 (en) 2000-10-12 2015-12-29 Bose Corporation Interactive sound reproducing

Also Published As

Publication number Publication date
JPH11312994A (ja) 1999-11-09
EP0957600A2 (de) 1999-11-17
DE69939853D1 (de) 2008-12-18
JP3591811B2 (ja) 2004-11-24
EP0957600A3 (de) 2001-09-12

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