JP4166221B2 - In-vehicle digital broadcast receiver - Google Patents

Description

  The present invention relates to an in-vehicle digital broadcast receiver.

  The current terrestrial analog television broadcast is scheduled to end in 2011, and the transition to terrestrial digital broadcasting is being carried out. In terrestrial digital broadcasting, encoded data is generated by compressing video data and audio data, and the encoded data is transmitted along with an error correction code to a plurality of segments having different frequency bands. Digital television broadcasting is characterized by less influence of multipath and the like, and less change in image quality and sound quality due to changes in the reception environment, compared to conventional analog television broadcasting.

  Terrestrial digital broadcasting is not only intended for fixed receivers, but also for broadcasting and portable broadcasting standards. However, at present, no actual broadcasts are available, Attempts have been made to display images on a television monitor that supports analog reception, such as a car navigation system or a television system in which terrestrial digital broadcasting is installed in an automobile.

  On the other hand, a car navigation system equipped with an HDD and capable of recording maps, music, still images, etc. has been developed. At present, the contents recorded on the HDD are the above-mentioned maps, music, still images, etc., but it is already technically established to record the digital broadcast video on the HDD, and the fixed digital broadcast receiver A product that combines HDD recorders with the HDD has already appeared.

  By the way, when receiving a digital broadcast, copy control is performed for the purpose of copyright protection. In other words, in the current satellite digital broadcasting and terrestrial digital broadcasting, an IC card called a BCAS card is used, and it is necessary to insert this card into the receiver in order to view the terrestrial digital broadcasting. It becomes. A BCAS card is a card having a unique ID number, one for each set box. BCAS is an abbreviation for BS-Conditional Access Systems. The introduction of CAS dedicated to terrestrial waves is also being considered for in-vehicle digital broadcast receivers, but at present, the use of BCAS cards is indispensable.

  When viewing digital terrestrial broadcasts with an in-vehicle digital broadcast receiver, it is necessary to insert a BACS card. From the viewpoint of security and the storage temperature of the BACS card, the BACS card can be removed and taken out when leaving the vehicle. There is a request to want to. Furthermore, the BCAS card is made according to the IC card regulations for fixed reception, and sufficient cooling is required to meet the operating temperature of -10 ° C to + 60 ° C in the in-vehicle digital broadcast receiver. It is necessary to consider.

  FIG. 7 shows the external appearance of a conventional car navigation integrated vehicle-mounted digital broadcast receiver.

  This in-vehicle digital broadcast receiver includes a receiver main body 10 and a display panel 20 provided on the front side of the receiver main body 10 so as to be freely opened and closed. FIG. 7 shows a state where the display panel 20 is tilted. Map data and the like are recorded at the right side of the center of the height of the front surface of the receiver body 10, and an insertion slot 101 for the HDD unit 32 used for recording a broadcast program is formed. In addition, an insertion slot 102 for a BCAS card (IC card) 1 used for copyright protection of a broadcast program is formed in the lower left portion of the front surface of the receiver body 10.

  That is, in the conventional in-vehicle digital broadcast receiver, the insertion slot 101 of the HDD unit 32 and the insertion slot 102 of the BCAS card 1 are formed separately, and the cooling of the HDD unit 32 and the BCAS card 1 is also different. The part needs to be cooled. Further, in order to mount the HDD unit 32 and the BCAS card 1 on the receiver main body 10, it is necessary to insert them separately.

  According to the present invention, an IC card used for copyright protection of a broadcast program and an HDD unit on which required data are recorded can be easily attached to and detached from the receiver body, and the HDD unit and the IC card can be cooled. It is an object of the present invention to provide an in-vehicle digital broadcast receiver that is easy to perform.

  According to the first aspect of the present invention, there is provided an IC card socket for an IC card used for copyright protection of a broadcast program in an in-vehicle digital broadcast receiver, and an HDD unit for recording required data. Is integrated and is equipped with a detachable unit that is detachably attached to the receiver body.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the receiver main body is provided with a cooling fan for cooling the detachable unit attached to the receiver main body.

  According to the present invention, an IC card used for copyright protection of a broadcast program and an HDD unit on which required data is recorded can be easily attached to and detached from the receiver body, and the HDD unit and the IC card can be removed. It becomes easy to cool.

  Embodiments of the present invention will be described below with reference to the drawings.

  1, 2, and 3 show the appearance of an in-vehicle digital broadcast receiver integrated with a car navigation system.

  This in-vehicle digital broadcast receiver is used for recording a broadcast program and the like, as well as a receiver main body 10, a display panel 20 provided on the front side of the receiver main body 10 so as to be opened and closed, map data, and the like. And a detachable unit 30 in which a HDD socket and a card socket of a BCAS card used for copyright protection of broadcast programs are integrated. 1 is a perspective view of a state in which the display panel 20 is tilted, FIG. 2 is a front view of the display panel 20, and FIG. 3 is a rear view of the receiver body 10. A plurality of operation keys are provided at both ends of the front surface of the display panel 20.

  As shown in FIGS. 4 and 5, the detachable unit 30 includes a case 31 in which the HDD unit 32 is built, and a card socket 33 fixed to the upper surface of the case 31. A BCAS card (IC card) 1 is inserted into the card socket 33. A connector 34 for connecting the HDD unit 32 and the card socket 33 to the car navigation system 40 (see FIG. 6) built in the receiver body 10 is attached to the rear end side of the case 31.

  As shown in FIG. 1, an insertion port 11 for inserting the detachable unit 30 is formed in the center of the front surface of the receiver body 10. As shown in FIG. 3, a cooling fan 12 for cooling the detachable unit 30 is provided on the rear surface of the receiver body 10.

  FIG. 6 shows an electrical configuration of a car navigation integrated vehicle-mounted digital broadcast receiver.

  The detachable unit 30 is inserted from the insertion port 11 on the front surface of the receiver body 10, and the connector 34 provided on the detachable unit 30 is connected to a connector (not shown) provided on the car navigation system 40 in the receiver body 10. It is assumed that

  In the receiver body 10, a cooling fan 12 for cooling the detachable unit 30 and a car navigation system 40 are provided. The car navigation system 40 includes an HDD control unit 41 for controlling the HDD unit 32, a digital television unit 42 for receiving terrestrial digital broadcasting, and a navigation device 43.

  The HDD unit 32 in the detachable unit 30 is connected to the HDD control unit 41 via a connector 34 provided in the detachable unit 30. The BCAS card 1 is connected to the digital television unit 42 via a card socket 33 and a connector 34 in the detachable unit 30. This makes it possible to view digital TV broadcasts.

  The HDD control unit 41 is connected to the digital television unit 42 and the navigation device 43. The digital television unit 42 is connected to the navigation device 43. Diversity antennas 51 and 52 are connected to the digital television unit 42.

  The navigation device 43 receives sensor signals from various sensors and GPS signals received by the GPS antenna 53. A display panel 20 and a speaker 54 are connected to the navigation device 43.

  The video of the television broadcast program received by the digital television unit 42 is displayed on the display panel 20 via the navigation device 43, and the sound of the television broadcast program is output from the speaker 54 via the navigation device 43. It is also possible to record the video and audio of the TV broadcast program received by the digital TV unit 42 in the HDD unit 32. In addition, the video and audio of the TV broadcast program recorded in the HDD unit 32 can be reproduced by the digital TV unit 42.

  In the above-described embodiment, the HDD unit 32 and the BCAS card 1 are simultaneously attached to the receiver body 10 or removed from the receiver body 10 by inserting or removing the detachable unit 30 into or from the receiver body 10. You will be able to

  Further, in the state where the detachable unit 30 is inserted into the receiver main body 10, the HDD unit 32 and the BCAS card 1 are close to each other, so that they can be easily cooled.

  In addition, the program recorded in the HDD unit 32 can be easily played back by another in-vehicle system. That is, by inserting the detachable unit 30 into another in-vehicle system with the BCAS card mounted, the program recorded in the HDD unit 32 in the detachable unit 30 can be played back by the same BCAS card as the BCAS card used for the recording. It can be carried out.

It is a perspective view which shows the external appearance of the in-vehicle digital broadcast receiver of a car navigation integrated type. 3 is a front view of the display panel 20. FIG. 2 is a rear view of the receiver body 10. FIG. 2 is a perspective view showing an appearance of a detachable unit 30. FIG. 3 is a perspective view showing a structure of a detachable unit 30. FIG. It is a block diagram which shows the electrical constitution of the in-vehicle digital broadcasting receiver of a car navigation integrated type. It is a perspective view which shows the external appearance of the conventional car navigation integrated vehicle-mounted digital broadcast receiver.

Explanation of symbols

1 BCAS card (IC card)
DESCRIPTION OF SYMBOLS 10 Receiver main body 11 Insertion slot 12 Cooling fan 20 Display panel 30 Detachable unit 31 Case 32 HDD unit 33 Card socket 34 Connector 3
40 Car Navigation System 41 HDD Control Unit 42 Digital TV Unit 43 Navigation Device

Claims (2)

In an in-vehicle digital broadcast receiver, an IC card socket for an IC card used for copyright protection of a broadcast program and an HDD unit for recording required data are integrally incorporated, and An in-vehicle digital broadcast receiver comprising a detachable unit that is detachably attached to a receiver body. The in-vehicle digital broadcast receiver according to claim 1, wherein the receiver main body is provided with a cooling fan for cooling the detachable unit attached to the receiver main body.

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