JP2008011555A - Electronic system, electronic apparatus, and portable navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver in which multimedia information can be effectively utilized by mounting a unit for displaying multimedia information contained in digital broadcasting on a mobile body such as an automobile so as to easily carry the unit, and displaying the information on the unit inside and outside the vehicle. <P>SOLUTION: A digital broadcast receiver 1 comprises: a fixed unit 2 including a tuner 10 for receiving digital broadcasting containing encoded information, a first memory 16 for storing information contained in the digital broadcasting, an audio decoder 12 for decoding audio information contained in the digital broadcasting, an audio amplification control section 13 for outputting the audio information to a speaker 40, and a first wireless IF 15 for transmitting the information to a mobile unit 3; and the mobile unit 3, being attachable to and detachable from the fixed unit 2, including a second wireless IF 30 for receiving information from the fixed unit 2, a second memory 33 for storing information, a second CPU 32 for decoding information, and a display operating section 35 for displaying decoded information. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a digital broadcast receiving device mounted on a moving body such as an automobile.

  Digital terrestrial audio broadcasting, unlike conventional analog broadcasting in which only audio information is transmitted, can transmit a variety of multimedia information using character data and image data in addition to high-quality audio information. Test broadcasts are scheduled to start in Tokyo and Osaka in the first half.

  As a technique for broadcasting such multimedia information, Japanese Patent Application Laid-Open No. 11-317711 discloses a method for creating a multimedia data broadcast program for extracting a broadcast program for multimedia data broadcast through a broadcast channel. In this multimedia data broadcasting program creation method, a database including multimedia objects such as images and text files is first constructed. Each multimedia object is accompanied by an explanatory text used for searching for the multimedia object in the database. Next, a list of multimedia objects selected in the database and a broadcast program including transmission judgment criteria such as transmission date and time associated with each object are extracted from the database. The transmission determination criteria for determining the possibility of transmitting the broadcast program are the transmission date and time set and the event depending on the broadcast program, and the multimedia object is broadcast based on such criteria.

  Japanese translation of PCT publication No. 2000-502795 discloses a multimedia information device that automatically broadcasts a multimedia animation in accordance with the geographical position of a vehicle and the date and time. This information device is composed of a fixed information station installed at a travel agency and an in-vehicle information station mounted on a vehicle. The two stations comprise a transmission device having information stored on a floppy disk and a floppy disk drive for reading the stored information or a wireless transceiver for transmitting and receiving travel parameters. Further, the in-vehicle information station includes a travel parameter stock device for broadcasting in which multimedia animation including information such as itinerary is stored, and a positioning device having a global positioning system called GPS. The in-vehicle information station is recorded in the stock device according to travel parameters that are stored on the floppy disk or transmitted from the fixed information station including the vehicle position and date and the geographical data of the current position of the vehicle by the positioning device. Broadcast multimedia animations.

  Digital terrestrial broadcasting can be received not only by receivers fixed indoors but also by receivers mounted on mobile objects such as automobiles. It is desired.

  Japanese Patent Application Laid-Open No. 7-15360 discloses an electronic device with a built-in antitheft device that can listen to radio broadcasts with the operation unit itself. This electronic device includes an operation unit that is detachably attached to a main body that is fixedly mounted on an automobile. The operation unit includes a tuner that receives radio waves from an antenna, a microcomputer with built-in PLL that performs control for selecting a desired station from the radio waves received by the tuner, and a tuner and a tuner that are connected when the operation unit is removed from the main body. A battery for supplying power to the microcomputer. In a state where the operation unit is detached from the main body, the audio signal included in the radio wave received by the tuner is given to the headphones connected to the operation unit via the amplifier provided in the operation unit. It can be used as a headphone radio.

  Since the in-vehicle digital broadcast receiving device mounted on the automobile is fixed inside the vehicle, multimedia information such as character data included in the digital broadcast cannot be browsed outside the vehicle. Further, if the in-vehicle digital broadcast receiving apparatus itself is configured to be detachably mounted on the automobile, the apparatus itself is large and cannot be easily carried.

  Accordingly, an object of the present invention is to make it easy to carry a unit for displaying multimedia information included in a digital broadcast and mount it on a mobile body such as an automobile, and the unit can receive multimedia information not only inside the vehicle but also outside the vehicle. It is to provide a digital broadcast receiving apparatus that can effectively use multimedia information by displaying and has good operability.

The present invention comprises a fixed unit and a portable unit that can be attached to and detached from the fixed unit,
The fixed unit includes a receiving unit that receives a digital broadcast including a plurality of types of encoded information, a first storage unit that stores information included in the received digital broadcast, and a specification included in the received digital broadcast. First decoding means for decoding the type of information, first output means for outputting the decoded information, and first communication means for transmitting the remaining type of information included in the received digital broadcast to the portable unit; Have
The portable unit includes second communication means for receiving information transmitted from the fixed unit, second storage means for storing information from the fixed unit, second decoding means for decoding the information, and decoded information And a second output means for outputting the digital broadcast receiving apparatus.

  According to the present invention, the digital broadcast is received by the receiving means of the fixed unit, the information included in the digital broadcast is stored in the first storage means, and the specific type of information included in the digital broadcast is received by the first decoding means. The decoded and decoded information is output by the first output means. The remaining types of information included in the digital broadcast are transmitted by the first communication means to the portable unit that can be attached to and detached from the fixed unit. Information transmitted from the fixed unit is received by the second communication means of the portable unit, stored in the second storage means, and decrypted by the second decoding means. The decrypted information is output by the second output means.

  In this way, the portable unit can receive and output the remaining types of information from the fixed unit and store the information regardless of whether the portable unit is attached to or detached from the fixed unit. The digital broadcast receiving apparatus in a state where such a portable unit is attached to the fixed unit can store and output all information included in the received digital broadcast.

  Of the information contained in the received digital broadcast, certain types of information are decoded and output by the fixed unit, and the remaining information is decoded and output by the portable unit, so either the fixed unit or the portable unit Compared to the case where all the information contained in the received digital broadcast is decoded and output, the processing for decoding and outputting in the fixed unit and the portable unit is reduced, and the decoding and output can be performed quickly and operated. Improves.

In the present invention, the digital broadcast broadcasts encoded information in units of programs for each of a plurality of channels, and includes program arrangement information including a broadcast program channel, a scheduled broadcast start time, and program content.
The portable unit includes input means operated by an operator, and the second output means has a display function,
The fixed unit stores the received program arrangement information in the first storage means and transmits it to the portable unit,
The portable unit receives the program arrangement information from the fixed unit, stores it in the second storage means and displays it on the second output means, and based on the input from the input means and the program arrangement information, the channel The program reservation information including the scheduled broadcast start time is created and stored in the second storage means, and the program reservation information is transmitted to the fixed unit by the second communication means and stored in the first storage means of the fixed unit. It is characterized by that.

  According to the present invention, the program arrangement information included in the digital broadcast is stored in the first storage means of the fixed unit and transmitted to the portable unit. The transmitted program arrangement information is received by the portable unit, stored in the second storage means, and displayed by the display function of the second output means. In the portable unit, the program reservation information including the channel and the scheduled broadcast start time created based on the input from the input means and the program arrangement information is stored in the second storage means and fixed by the second communication means. It is transmitted to the unit and stored in the first storage means of the fixed unit.

  Thus, regardless of whether the portable unit is attached to or detached from the fixed unit, the operator browses the program arrangement information displayed on the second output means and inputs the desired program channel and scheduled broadcast start time to the input means. Thus, it is possible to easily reserve a desired program, and the fixed unit can receive the operator's desired program based on the program reservation information.

  Further, since the program reservation information is stored in the second storage means of the portable unit, the operator can view the program reservation information regardless of whether the portable unit is attached to or detached from the fixed unit. Furthermore, since the program reservation information is stored in each storage unit of the fixed unit and the portable unit, even if the program reservation information stored in the first storage unit of the fixed unit is erased for some reason, The fixed unit can receive the program desired by the operator based on the program reservation information stored in the second storage means of the portable unit. Also, even if the program reservation information stored in the second storage means of the portable unit is erased for some reason, the portable unit will store the program reservation information stored in the first storage means of the fixed unit, It can be displayed on the second output means.

In the present invention, the digital broadcast includes traffic information indicating a traffic path condition,
The fixed unit has recording medium reading means for reading information recorded on a recording medium detachable from the fixed unit,
The portable unit receives position reference information from a position information satellite, calculates position information relating to the current position of the portable unit based on the position reference information, map information and position information based on the map information and position information, Based on the current position display function for displaying the current position on the second output means and the map information, traffic information, and the input starting point and destination, a route search from the starting point to the destination is performed, and a map and a search are performed. Navigation means for executing a route search function for displaying the route on the second output means,
The fixed unit transmits the map information read by the recording medium reading means from the recording medium in which the map information is recorded, and the received traffic information to the portable unit,
The portable unit receives the map information and traffic information from the fixed unit, stores the map information in the second storage means, and inputs the stored map information, the calculated position information, and the input means. The navigation means is made to function based on the starting point, the destination, and the traffic information.

  According to the present invention, the map information recorded on the recording medium removable from the fixed unit is read by the recording medium reading means and transmitted to the portable unit together with the traffic information included in the digital broadcast received by the fixed unit. The The transmitted map information and traffic information are received by the portable unit, and the map information is stored in the second storage means. The navigation means of the portable unit displays the map and the current position on the second output means based on the position information calculated by the position calculation means provided in the portable unit and the map information stored in the second storage means. . The navigation means searches for a route from the departure point to the destination based on the map information, traffic information, and the input departure point and destination, and displays the map and the searched route on the second output means. Thus, the portable unit can function the navigation means regardless of whether the portable unit is attached to or detached from the fixed unit.

  Further, since the map information is stored in the second storage means of the portable unit, the portable unit does not need to be provided with a recording medium reading means for reading information recorded on a recording medium detachable from the portable unit. In addition to simplifying the configuration, the size and weight can be reduced. Further, since the map information is stored in the second storage means of the portable unit, the portable unit allows the navigation means to function even if the recording medium in which the map information is recorded is detached from the recording medium reading means of the fixed unit. As a result, a recording medium on which other information is recorded can be mounted on the recording medium reading means of the fixed unit, and the information can be read.

  As described above, according to the present invention, the portable unit can receive and output the remaining types of information from the fixed unit and store the information regardless of whether the portable unit is attached to or detached from the fixed unit. The digital broadcast receiving apparatus in a state where such a portable unit is attached to the fixed unit can store and output all information included in the received digital broadcast.

  Of the information contained in the received digital broadcast, certain types of information are decoded and output by the fixed unit, and the remaining information is decoded and output by the portable unit, so either the fixed unit or the portable unit Compared to the case where all the information contained in the received digital broadcast is decoded and output, the processing for decoding and outputting in the fixed unit and the portable unit is reduced, and the decoding and output can be performed quickly and operated. Improves.

  Further, according to the present invention, regardless of whether the portable unit is attached to or detached from the fixed unit, the operator browses the program arrangement information displayed on the second output means and determines the channel of the desired program and the scheduled broadcast start time. By inputting to the input means, it is possible to easily reserve a desired program, and the fixed unit can receive the operator's desired program based on the program reservation information.

  Further, since the program reservation information is stored in the second storage means of the portable unit, the operator can view the program reservation information regardless of whether the portable unit is attached to or detached from the fixed unit. Furthermore, since the program reservation information is stored in each storage unit of the fixed unit and the portable unit, even if the program reservation information stored in the first storage unit of the fixed unit is erased for some reason, The fixed unit can receive the program desired by the operator based on the program reservation information stored in the second storage means of the portable unit. Also, even if the program reservation information stored in the second storage means of the portable unit is erased for some reason, the portable unit will store the program reservation information stored in the first storage means of the fixed unit, It can be displayed on the second output means.

  Further, according to the present invention, the portable unit can function the navigation means regardless of whether the portable unit is attached to or detached from the fixed unit.

  Further, since the map information is stored in the second storage means of the portable unit, the portable unit does not need to be provided with a recording medium reading means for reading information recorded on a recording medium detachable from the portable unit. In addition to simplifying the configuration, the size and weight can be reduced. Further, since the map information is stored in the second storage means of the portable unit, the portable unit can make the navigation means function even if the recording medium on which the map information is recorded is detached from the recording medium reading means of the fixed unit. As a result, a recording medium on which other information is recorded can be mounted on the recording medium reading means of the fixed unit, and the information can be read.

  FIG. 1 is a block diagram showing a configuration of a digital broadcast receiving apparatus 1 according to an embodiment of the present invention. The digital broadcast receiver 1 is mounted on a mobile body such as an automobile, and is a terrestrial digital audio broadcast (hereinafter simply referred to as “digital audio broadcast”) including audio information and multimedia information including character data and image data. This information is reproduced and displayed.

  In digital audio broadcasting, audio information is encoded in accordance with MPEG2 Audio AAC, and audio information and multimedia information are in compliance with MPEG-2 Systems for each channel specified according to the frequency of the VHF carrier. Then, the data is multiplexed on a packet basis, digitally modulated in accordance with an Orthogonal Frequency Division Multiplexing (abbreviation: OFDM), and transmitted. In digital audio broadcasting, encoded information is broadcast on a program basis for each of a plurality of channels.

  The digital broadcast receiver 1 includes a fixed unit 2 that is fixedly mounted on a moving body such as an automobile, and a portable unit 3 that can be attached to and detached from the fixed unit 2.

  The fixed unit 2 includes a tuner unit 10, a demodulation demultiplexer unit 11, an audio decoder unit 12, an audio amplification control unit 13, a first central processing unit (hereinafter abbreviated as “first CPU”) 14, a first wireless interface. (Hereinafter abbreviated as “first wireless IF”) 15, a first memory 16, a CD drive 17, and an operation display unit 18.

  The first CPU 14 comprehensively controls the fixed unit 2. The tuner unit 10 serving as a receiving unit receives the digital audio broadcast via the antenna 19 mounted on the automobile, and the channel selected from the received digital audio broadcast based on the channel selection command from the operation display unit 18. Are extracted and provided to the demodulation demultiplexer unit 11. The demodulation demultiplexer unit 11 demodulates the packet from the tuner unit 10 in accordance with a command from the first CPU 14, extracts a packet having encoded audio information, gives the packet to the audio decoder unit 12, and uses the remaining information. A packet having some multimedia information is given to the first CPU 14.

  The audio decoder unit 12 serving as the first decoding means decodes a packet having encoded audio information in accordance with a command from the first CPU 14, and provides a signal having the decoded audio information to the audio amplification control unit 13. The voice amplification control unit 13 as the first output means amplifies a signal having the decoded voice information in accordance with a volume command from the operation display unit 18, gives the signal to the speaker 40 mounted on the automobile, and outputs the voice.

  The first wireless IF 15 performs wireless communication with a second wireless interface (hereinafter abbreviated as “second wireless IF”) 30 of the portable unit 3 to be described later to exchange information. The CD drive 17 serving as a recording medium reading unit reads information recorded on a compact disc (abbreviation: CD) that is a recording medium that can be attached to and detached from the fixed unit 2 and supplies the information to the first CPU 14. The CD includes a music CD in which audio data is recorded and a CD-ROM in which data information such as images and map information is recorded. When the music CD is loaded in the CD drive 17, the encoded audio data recorded on the music CD is decoded by the first CPU 14 and the audio decoder unit 12, and further amplified by the audio amplification control unit 13 to be amplified by the speaker 40. Is output from.

  The first memory 16 as the first storage means is realized by a random access memory (abbreviation: RAM), and includes information contained in the received digital audio broadcast, information read by the CD drive 17, and a portable unit described later. The information from 3 is stored.

  The operation display unit 18 is realized by, for example, a button which is an input device and a liquid crystal display device (abbreviation: LCD). When an input operation is performed by the operator, a channel selection command which is a command for receiving a channel desired by the operator. , And a volume command that is a command for outputting the audio information at a volume desired by the operator is given to the first CPU 14. The operation display unit 18 displays the channel number and volume of the received digital audio broadcast. The fixed unit 2 operates by being supplied with a current from a vehicle power source of an automobile on which the digital broadcast receiving device 1 is mounted.

  The portable unit 3 includes a second wireless IF 30, a global positioning system (hereinafter abbreviated as “GPS”) 31, a second central processing unit (hereinafter abbreviated as “second CPU”) 32, a second memory. 33, an image display control unit (hereinafter abbreviated as “GDC”) 34, a display operation unit 35, and a battery power source 36.

  The second CPU 32 which is the second decoding means and the navigation means is responsible for the overall control of the portable unit 3, the decoding of the encoded multimedia information from the fixed unit 2, and the map information, traffic information and position information which will be described later. Perform navigation based.

  The second wireless IF 30 as the second communication means performs wireless communication with the first wireless IF 15 of the fixed unit 2 to exchange information. The GPS 31 as the position calculation means receives the position reference information including the unique identifier, the orbit, and the time of the GPS satellite transmitted from the GPS satellites as the plurality of position information satellites, and based on the position reference information, the mobile unit 3 The position information related to the current position is calculated and given to the second CPU 32.

  The second memory 33 as the second storage means is realized by a RAM, and stores information from the fixed unit 2 including multimedia information included in the received digital audio broadcast and information read by the CD drive 17. The GDC 34 performs image display control of a display operation unit 35 described later in order to reduce the load on the second CPU 32.

  The display operation unit 35 is realized by, for example, an LCD and a touch panel, and is provided with multimedia information, information read by the CD drive 17 of the fixed unit 2, information stored in the first and second memories 16 and 33, and the GPS 31. Display location information. The display operation unit 35 is operated by the operator and gives various commands from the operator to the second CPU 32. The battery power source 36 supplies current to the portable unit 3 and the portable unit 3 is charged by being attached to the fixed unit 2 or connected to a dedicated charger.

  The first and second wireless IFs 15 and 30 perform wireless communication with each other regardless of whether the portable unit 3 is attached to or detached from the fixed unit 2. It is desirable that the first and second wireless IFs 15 and 30 have a communication frequency of 2.4 GHz, a data transfer rate of about 512 kbps or more, and a transmission distance of about 5 m. When the communication between the fixed unit 2 and the portable unit 3 is electrically connected by a connector or the like, the deterioration of the connector due to the attachment / detachment of the portable unit 3 and the digital broadcast receiver 1 is mounted on the automobile. Although communication between the fixed unit 2 and the portable unit 3 may not be performed normally due to deterioration of the connector caused by vibration caused by the traveling of the automobile, the communication between the fixed unit 2 and the portable unit 3 is not performed. Such problems can be solved by using wireless communication.

  An operation of receiving a digital audio broadcast in the digital broadcast receiving apparatus 1 of the present embodiment will be described below. It is assumed that the mobile unit 3 is attached to the fixed unit 2. When the operator operates the operation display unit 18 and inputs a channel desired by the operator, the operation display unit 18 gives a channel selection command to the tuner unit 10 via the first CPU 14. From the digital audio broadcast received via the antenna 19, only the packets included in the channel desired by the operator are extracted by the tuner unit 10 and given to the demodulation demultiplexer unit 11.

  Thereafter, the digital audio broadcast is separated into a packet having audio information and a packet having multimedia information by the demodulation demultiplexer unit 11. The encoded audio information is supplied to the audio decoder unit 12 and decoded, and further supplied to the audio amplification control unit 13 to be amplified and output from the speaker 40 mounted on the automobile.

  The multimedia information included in the digital audio signal separated by the demodulating demultiplexer unit 11 is stored in the first memory 16 via the first CPU 14 and the second information of the portable unit 3 via the first wireless IF 15. It is transmitted to the wireless IF 30. The multimedia information transmitted to the portable unit 3 is decoded by the second CPU 32, stored in the second memory 33, and displayed on the display operation unit 35 via the GDC 34. Further, when the operation display unit 18 is operated by the operator and a command desired by the operator is input, the multimedia information is processed by the second CPU 32 based on the input command and displayed via the GDC 34. It is displayed on the operation unit 35.

  The multimedia information includes program arrangement information (Service Information; abbreviation: SI) that is character data including a channel of a program broadcast by digital audio broadcasting, a scheduled broadcast start time, a program broadcast time, and program contents. The SI is stored in the first memory 16 of the fixed unit 2 together with other multimedia information, and transmitted to the portable unit 3. The SI transmitted to the portable unit 3 is stored in the second memory 33 and processed by the second CPU 32 to create an electronic program guide (abbreviation: EPG) and displayed on the display operation unit 35. The EPG is displayed as a table in which each program is arranged for each channel in the column direction and for each time in the row direction, as in, for example, a television column of a newspaper. The SI included in the digital audio broadcast is periodically received, compared with the SI stored in the first and second memories 16 and 33, and updated to the latest information as appropriate and stored.

  When the operator browses the EPG displayed on the display operation unit 35 and further operates and inputs the display operation unit 35 so that the content desired by the operator is displayed, the second CPU 32 displays the display operation unit. Based on the input command from 35, the EPG is processed into a desired content of the operator, for example, EPG for each genre such as news, sports, etc., and a still image is added to the display operating unit 35 as necessary. indicate.

  When the operator browses the EPG displayed on the display operation unit 35 and operates the display operation unit 35 to select a program broadcast at the current time, a channel selection command is issued from the second CPU 32 and the second wireless communication. Via the IF 30, the program is transmitted to the first wireless IF 15 of the fixed unit 2 and given to the tuner unit 10, and the audio of the selected program is output from the speaker 40, and the multimedia information included in the program is It is displayed on the display operation unit 35.

  When the operator browses the EPG displayed on the display operation unit 35 and operates the display operation unit 35 to input a reservation for receiving a desired program, the second CPU 32 wants to make a reservation based on the SI. Program reservation information including a channel on which a program is broadcast, a broadcast date, a broadcast start time, and a broadcast end time is created and stored in the second memory 33. The program reservation information is transmitted to the first wireless IF 15 of the fixed unit 2 via the second wireless IF 30 and stored in the first memory 16 of the fixed unit 2.

  Based on the program reservation information stored in the first memory 16, the first CPU 14 of the fixed unit 2 gives a channel selection command to the tuner unit 10 at the program start time, and receives the digital audio received via the antenna 19. A signal included in a channel designated by broadcast program reservation information is extracted and provided to the demodulation demultiplexer unit 11. Thereafter, the audio information and multimedia information included in the received digital audio broadcast are output from the speaker 40 and displayed on the display operation unit 35 as described above.

  In this way, the digital broadcast receiving apparatus 1 when the portable unit 3 is attached to the fixed unit 2 receives the digital audio broadcast and outputs the audio information and displays the multimedia information. Since the multimedia information included in the audio broadcast is displayed on the display operation unit 35 of the portable unit 3, the operator removes the portable unit 3 from the fixed unit 2 and takes it out of the vehicle. The multimedia information displayed on the display operation unit 35 of the portable unit 3 can be browsed, and a program can be reserved. The multimedia information is appropriately transmitted to the portable unit 3 via the fixed unit 2 and stored in the second memory 33 of the portable unit 3.

  According to the digital broadcast receiving apparatus 1 of the present embodiment, the fixed unit 2 is included in the tuner unit 10 that receives a digital audio broadcast including encoded audio information and multimedia information, and the received digital audio broadcast. A first memory 16 that stores information to be recorded, an audio decoder unit 12 that decodes audio information included in the received digital audio broadcast, an audio amplification control unit 13 that outputs the decoded information, and a received digital audio broadcast And a first wireless IF 15 that transmits the included multimedia information to the portable unit 3. Accordingly, the fixed unit 2 can appropriately store, decode and output the audio information included in the received digital audio broadcast, and can transmit the multimedia information to the portable unit 3.

  The portable unit 3 that can be attached to and detached from the fixed unit 2 includes a second wireless IF 30 that receives information including multimedia information transmitted from the fixed unit 2, a second memory 33 that stores information from the fixed unit 2, It has the 2nd CPU32 which decodes media information, and the display operation part 35 which outputs the decoded multimedia information. Accordingly, the portable unit 3 can receive multimedia information from the fixed unit 2 and display it on the display operation unit 35 and store the information regardless of whether the portable unit 3 is attached to or detached from the fixed unit 2. The digital broadcast receiving apparatus 1 in a state in which the portable unit 3 is attached to the fixed unit 2 can store and output all information included in the received digital audio broadcast.

  Of the information included in the received digital audio broadcast, the audio information is decoded and output by the fixed unit 2, and the multimedia information is processed and displayed by the portable unit 3. In either case, compared to the case where all the information included in the received digital audio broadcast is decoded and output, the processing for decoding and outputting in the fixed unit 2 and the portable unit 3 is reduced, and display and output are performed quickly. And operability is improved. Since the multimedia information has a very small capacity compared to the voice information, the second memory 33 of the portable unit 3 can be configured by a RAM having a small capacity.

  Further, according to the digital broadcast receiving apparatus 1 of the present embodiment, the portable unit 3 displays the multimedia information and includes the display operation unit 35 operated by the operator, and the fixed unit 2 receives the received digital audio broadcast. Is stored in the first memory 16 and transmitted to the portable unit 3, and the portable unit 3 receives the program arrangement information from the fixed unit 2, stores it in the second memory 33, and displays it. Program reservation information that is displayed on the operation unit 35 and includes the channel and the scheduled broadcast start time is created and stored in the second memory 33 based on the input from the display operation unit 35 and the program arrangement information. Information is transmitted to the fixed unit 2 by the second wireless IF 30 and stored in the first memory 16 of the fixed unit 2. Thus, regardless of whether the portable unit 3 is attached to or detached from the fixed unit 2, the operator browses the program arrangement information displayed on the display operation unit 35 and displays the desired program channel and scheduled broadcast start time on the display operation unit. By inputting the value to 35, the desired program can be easily reserved, and the fixed unit 2 can receive the operator's desired program based on the program reservation information.

  Further, since the program reservation information is stored in the second memory 33 of the portable unit 3, the operator can view the program reservation information regardless of whether the portable unit 3 is attached to or detached from the fixed unit 2. Further, since the program reservation information is stored in the first and second memories 16 and 33 of the fixed unit 2 and the portable unit 3, the program reservation information stored in the first memory 16 of the fixed unit 2 should be stored. Even if the fixed unit 2 is erased for some reason, the fixed unit 2 can receive the program desired by the operator based on the program reservation information stored in the second memory 33 of the portable unit 3. Also, even if the program reservation information stored in the second memory 33 of the mobile unit 3 is deleted for some reason, the mobile unit 3 will retain the program reservation stored in the first memory 16 of the fixed unit 2. Information can be displayed on the display operation unit 35.

  An operation regarding navigation in the digital broadcast receiving apparatus 1 of the present embodiment will be described below. The multimedia information of the digital audio broadcasting includes traffic information indicating the traffic conditions around the vehicle on which the digital broadcast receiving device 1 is mounted. When a CD-ROM on which map information is recorded is loaded into the CD drive 17 of the fixed unit 2, the CD drive 17 reads the CD-ROM and stores the map information in the first memory 16. And transmitted to the portable unit 3 via the first wireless IF 15. The map information transmitted from the fixed unit 2 is received by the second wireless IF 30 of the portable unit 3 and stored in the second memory 33.

  The GPS 31 receives position reference information including unique identifiers, orbits and times of GPS satellites transmitted from a plurality of GPS satellites, and calculates position information related to the current position of the portable unit 3 based on the position reference information.

  The second CPU 32 superimposes the current position of the mobile unit 3 on the map based on the map information and the position information, and displays the current position display function on the display operation unit 35. A route search function for performing a route search from the departure point to the destination based on the departure point and the destination input in 35, and displaying the route on the map by superimposing the searched route on the map is executed. Navigation. Further, at this time, the first CPU 14 of the fixed unit 2 may perform speech synthesis based on the map information, traffic information, and position information, and perform navigation by voice via the voice amplification control unit 13 and the speaker 40. .

  Further, the mobile unit 3 is provided with a GPS 31, and the map information recorded on the CD-ROM is stored in the second memory 33 of the mobile unit 3, so that the mobile unit 3 is detached from the fixed unit 2. Even outside the vehicle, the portable unit 3 can perform navigation.

  According to the digital broadcast receiving apparatus 1 of the present embodiment, the fixed unit 2 has the CD drive 17 that reads information recorded on a CD-ROM that can be attached to and detached from the fixed unit 2, and the portable unit 3 includes GPS. The GPS 31 that receives the position reference information from the satellite and calculates the position information related to the current position of the portable unit 3 based on the position reference information, and the map and the current position based on the map information and the position information are displayed on the display operation unit 35. Based on the current position display function to be displayed, the map information, the traffic information, and the input starting point and destination, a route search from the starting point to the destination is performed, and the map and the searched route are displayed on the display operation unit 35. The fixed unit 2 includes a CD drive 17 recorded on a CD-ROM. Thus, the read map information and the traffic information included in the received digital audio broadcast are transmitted to the mobile unit 3, and the mobile unit 3 receives the map information and the traffic information from the fixed unit 2 and receives the map information. While being stored in the second memory 33, navigation is performed based on the stored map information, the calculated position information, the departure point and destination input to the display operation unit 35, and the traffic information. As a result, the mobile unit 3 can perform navigation regardless of whether the mobile unit 3 is attached to or detached from the fixed unit 2.

  Since the map information is stored in the second memory 33 of the portable unit 3, the portable unit 3 includes a CD drive that reads information recorded on a recording medium such as a CD-ROM that can be attached to and detached from the portable unit 3. It is not necessary to provide a recording medium reading unit, and the configuration of the portable unit 3 can be simplified, and the size and weight can be reduced. Further, since the map information is stored in the second memory 33 of the portable unit 3, the portable unit 3 performs navigation even if the CD-ROM in which the map information is recorded is detached from the CD drive 17 of the fixed unit 2. Thus, the CD-ROM and the music CD on which other information is recorded can be loaded into the CD drive 17 of the fixed unit 2 and the information can be read.

  As described above, in the digital broadcast receiving apparatus 1 of the present embodiment, the mobile unit 3 includes the second CPU 32, the second memory 33, the GPS 31, and the display operation unit 35 as described above. Even if the mobile unit 3 is detached, the mobile unit 3 can not only display the multimedia information included in the digital audio broadcasting, but also create and display an EPG based on the SI included in the multimedia information, and input by the operator. The program can be reserved based on the traffic information, and the navigation can be performed based on the traffic information included in the multimedia information, the position information obtained by the GPS 31, and the map information stored in the second memory 33. it can.

  In the digital broadcast receiving apparatus 1 according to the present embodiment, the terrestrial digital audio broadcast is received. However, the terrestrial digital broadcast including the image information including the moving image and the still image, the audio information, and the multimedia information is received. Audio information and multimedia information included in terrestrial digital broadcasting may be output and displayed.

  Further, in the digital broadcast receiving apparatus 1 of the present embodiment, the communication between the fixed unit 2 and the portable unit 3 is performed wirelessly, but the fixed unit 2 and the portable unit 3 are connected by a connector for communication. You may do it.

  In the digital broadcast receiving apparatus 1 of the present embodiment, the audio information is stored in the first memory 16 of the fixed unit 2. However, it is not necessary to store all the audio information included in the received digital audio broadcast. Only the desired part of the operator may be stored.

  In the digital broadcast receiving apparatus 1 of the present embodiment, the recording medium reading means mounted on the fixed unit 2 is the CD drive 17 for reading a CD-ROM and a music CD, but a digital versatile disk (abbreviation: DVD) is used. It may be a DVD drive for reading, a multi-drive capable of reading a CD and a DVD, and an MO drive for reading a magneto-optical disk (abbreviation: MO). A device that reads a memory card having

It is a block diagram which shows the structure of the digital broadcast receiver 1 which is one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Digital broadcast receiver 2 Fixed unit 3 Portable unit 10 Tuner part 12 Audio | voice decoder part 13 Audio | voice amplification control part 15 1st radio | wireless interface 16 1st memory 17 CD drive 30 2nd radio | wireless interface 31 Global positioning system 32 2nd central calculation Processing unit 33 Second memory 35 Display operation unit

Claims (3)

A fixed unit and a portable unit that can be attached to and detached from the fixed unit;
The fixed unit includes a receiving unit that receives a digital broadcast including a plurality of types of encoded information, a first storage unit that stores information included in the received digital broadcast, and a specification included in the received digital broadcast. First decoding means for decoding the type of information, first output means for outputting the decoded information, and first communication means for transmitting the remaining type of information included in the received digital broadcast to the portable unit; Have
The portable unit includes: second communication means for receiving information transmitted from the fixed unit; second storage means for storing information from the fixed unit; second decoding means for decoding the information; and decoded information And a second output means for outputting the digital broadcast receiving apparatus. The digital broadcast broadcasts the encoded information in units of programs for each of a plurality of channels, and includes program arrangement information including a broadcast program channel, a scheduled broadcast start time, and program content,
The portable unit includes input means operated by an operator, and the second output means has a display function,
The fixed unit stores the received program arrangement information in the first storage means and transmits it to the portable unit,
The portable unit receives the program arrangement information from the fixed unit, stores it in the second storage means and displays it on the second output means, and based on the input from the input means and the program arrangement information, the channel The program reservation information including the scheduled broadcast start time is created and stored in the second storage means, and the program reservation information is transmitted to the fixed unit by the second communication means and stored in the first storage means of the fixed unit. The digital broadcast receiver according to claim 1. The digital broadcast includes traffic information indicating traffic conditions,
The fixed unit has recording medium reading means for reading information recorded on a recording medium detachable from the fixed unit,
The portable unit receives position reference information from a position information satellite, calculates position information relating to the current position of the portable unit based on the position reference information, map information and position information based on the map information and position information, Based on the current position display function for displaying the current position on the second output means and the map information, traffic information, and the input starting point and destination, a route search from the starting point to the destination is performed, and a map and a search are performed. Navigation means for executing a route search function for displaying the route on the second output means,
The fixed unit transmits the map information read by the recording medium reading means from the recording medium in which the map information is recorded, and the received traffic information to the portable unit,
The portable unit receives the map information and traffic information from the fixed unit, stores the map information in the second storage means, and inputs the stored map information, the calculated position information, and the input means. 3. The digital broadcast receiving apparatus according to claim 1, wherein the navigation means is made to function based on the starting point, destination and traffic information.

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