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Digital broadcasting receiving apparatus
| Details |
Inventors: Chikaishi, Kouichi;
Assignee: Fujitsu Ten Limited (Kobe, JP)
Primary Examiner: Vo; Nguyen T.
Assistant Examiner: Le; Nhan T.
Attorney, Agent or Firm: Oliff & Berridge, PLC
A digital broadcasting receiving apparatus has a fixed unit and a portable unit removably attached to the fixed unit. The fixed unit includes a tuner portion, a first memory, an audio decoder portion, an audio amplification/control portion and a first radio IF. The tuner portion receives digital broadcasting including encoded information. The first memory stores information included in the digital broadcasting. The audio decoder portion decodes audio information included in the digital broadcasting. The audio amplification/control portion outputs the audio information to a speaker. The first radio IF transmits information to the portable unit. The portable unit has a second radio IF, a second memory, a second CPU and a display/operation portion. The second radio IF receives information from the fixed unit. The second memory stores information. The second CPU decodes information. The display/operation portion displays the decoded information. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
1 is a block diagram showing the configuration of a digital broadcasting receiving apparatus 1 according to an embodiment of the invention.
The digital broadcasting receiving apparatus 1 is mounted on a movable body such as a car, receives terrestrial digital audio broadcasting (hereinafter, referred to as "digital audio broadcasting" simply) including audio information and multimedia information containing character data, graphic data, etc.
, and reproduces and displays the audio information and the multimedia information received thus.
In the digital audio broadcasting, the audio information is encoded in conformity with MPEG2 Audio AAC.
The audio information and the multimedia information are multiplexed by packet unit in conformity with MPEG-2 Systems for every channel defined in accordance with the frequency of a carrier wave in a VHF band.
The multiplexed signal is digital-modulated and transmitted in conformity with orthogonal frequency division multiplexing (abbreviated to "OFDM").
In the digital audio broadcasting, the encoded information is broadcast by program unit on each of a plurality channels.
The digital broadcasting receiving apparatus 1 has a fixed unit 2 fixedly mounted on the movable body such as the car, and a portable unit 3 removably attached to the fixed unit 2.
The fixed unit 2 is constituted by a tuner portion 10, a demodulator/demultiplexer portion 11, an audio decoder portion 12, an audio amplification/control portion 13, a first central processor portion (hereinafter abbreviated to "first CPU") 14, a first radio interface (hereinafter abbreviated to "first radio IF") 15, a first memory 16, a CD drive 17 and an operation/display portion 18.
The first CPU 14 controls the fixed unit 2 generally.
The tuner portion 10 as a receiving unit receives digital audio broadcasting through an antenna 19 mounted on the car.
The tuner portion 10 extracts packets included in a selected channel from the received digital audio broadcasting in accordance with a channel selection instruction from the operation/display portion 18, and feeds the extracted packets to the demodulator/demultiplexer portion 11
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Cell Phones 
