JPH0569626U - Disc player - Google Patents

Abstract

(57) [Abstract] [Purpose] When playing an audio CD or ROM format CD, useful information is displayed on the display unit of the CD player to effectively use the display unit. [Structure] Audio CD playback is performed by the CD mechanical playback unit 12 controlled by the system control microcomputer 18, the D / A converter 14, the low-pass filter 15, and the audio amplifier 16 connected to the outside, and the graphics control microcomputer 21 It has a ROM format CD playback by a CD ROM decoder 13, which is controlled by, a graphic display controller 22, a graphic VRAM 23, and a video signal converter 24, and a car navigation function based on the position information of the GPS receiver 26. The operation unit 19 of the microcomputer 18 is provided with a display means for displaying on the display unit the subcode information at the time of reproducing the audio CD and the date and time and position information of the GPS receiver 26 at the time of reproducing the ROM format CD.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disc reproducing apparatus capable of reproducing audio and ROM format compact discs, and in particular, a disc reproducing device suitable for displaying GPS position information other than the subcode of the disc on the display unit when reproducing a ROM format disc. Regarding the device.

[0002]

[Prior art]

 Conventionally, a disc player capable of playing audio and ROM format compact discs (hereinafter, simply referred to as a CD) uses a microcomputer (hereinafter simply referred to as a microcomputer) for controlling a built-in disc playback system when playing an audio CD. The digital playback signal from the controlled CD mechanical playback unit was converted to an audio signal via the D / A converter and low-pass filter, and the CD playback signal was output from the speaker via the audio amplifier.

During reproduction of this audio CD, subcode information such as track number and time information stored in the audio disc was displayed on the display unit by the control microcomputer. For example, as shown in the display diagram of Fig. 5, the track number display "01", the subcode time information display 31 "01" minutes, and the time information display 32 "23" seconds are displayed. I was going.

On the other hand, at the time of reproducing the ROM format CD of the car navigation function, the data read from the CD mechanical reproducing unit according to the instruction of the built-in graphic control microcomputer is read by the CD ROM decoder by the graphic control microcomputer. The data is converted into data that can be read out and output to the graphic controller, processed by the graphic display controller and expanded in the graphic VRAM, and the map data of the CD ROM is drawn on the TV monitor via the video signal converter, and the GPS The position information from the receiver can be displayed on the map image of the above CD ROM for car navigation display, and the display of the disc playback device only displays "ROM disc playing". It was

That is, when a ROM format CD is played, the disk information similar to the subcode stored in the ROM format CD is used only as an index for ROM access, and the disk is played back like the audio CD. There is no meaning such as the remaining time of the time, and since the user does not perform special playback such as search, it does not make sense to display subcode information such as the track number.Therefore, the subcode is displayed on the display. No information was displayed.

[0006]

[Problems to be solved by the device]

 However, the above-mentioned display on the display unit of the conventional disc reproducing device is convenient for the user because a lot of subcode information related to the disc reproducing is displayed when the audio CD is reproduced, but it is a ROM format of the car navigation function. When playing a CD, there was a problem that it was not used despite the fact that there was almost no display and the display unit function of the disk playback device.

The present invention has been made in view of the above points, and an object thereof is to solve the drawbacks of the conventional example, and to reproduce a ROM-format CD and a sub-disk for reproducing a disc on the display unit of the disc reproducing device. Even if the code information is displayed, it is not considered to be useful to the user. Therefore, after displaying "Navigating" on this display, the information that can be read from the GPS receiver, that is, the date and time information and The present invention is to provide a disc reproducing device that can display position information and the like and can effectively use the display portion of the disc reproducing device.

[0008]

[Means for Solving the Problems]

 The disc reproducing apparatus of the present invention has a reproducing function for an audio disc and a ROM format disc, and a car navigation function for navigating according to the position information received by the GPS receiver. The disc recorded when the audio disc is reproduced is used. In a disc reproducing device equipped with a display unit for displaying information and a video monitor for displaying car navigation information together with position information from the GPS receiver when reproducing the ROM format disc, the GPS when reproducing the ROM format disc. A display means for displaying the reception information of the receiver on the display section is provided.

Further, display means for displaying the date and time information of the GPS receiver reception on the display section may be provided.

Further, display means for displaying the traveling direction of the own vehicle may be provided on the display section according to the position information received by the GPS receiver.

[0011]

[Action]

 The operation of this invention will be described with reference to the functional block diagram of FIG. The disc reproducing apparatus of the present invention is an audio CD reproducing function, a CD ROM map data of ROM format CD reproducing (ROM disc reproducing means 2) and a video monitor by date and time information and position information from the GPS receiver (GPS receiver receiving means 1). A disk reproducing apparatus having a car navigation function (monitor display means 3).

In the above-mentioned disc reproducing device according to the present invention, when the ROM format CD is reproduced, the date display of the date and time information from the GPS receiver is displayed on the display portion of the disc reproducing device by the operation of the display selection switch DPARA = 0. Then, the date display means 4 is operated, and the time information of the date and time information from the GPS receiver is displayed by the DPARA = 1 operation (clock display means 5), and the vehicle traveling direction of the position information of the GPS receiver is displayed by the DPARA = 2 operation. It is possible (vehicle traveling direction display means 6).

As described above, according to the date and time information and the position information from the GPS receiver, the above-mentioned effective disc reproducing apparatus, which has hardly been used for specific display, is displayed on the display unit except the sub-code for disc reproducing. It is possible to display information and effectively use the display unit of the disc reproducing apparatus, and at the same time, display useful information to the user.

[0014]

【Example】

 An embodiment of the disc reproducing apparatus according to the present invention will be described with reference to FIGS. FIG. 1 is a functional block diagram showing the configuration of the present invention, FIG. 2 is a block diagram showing the configuration of hardware, FIG. 3 is a flow chart explaining the display operation of the display section, and FIG. 4 is a display example of the display section. FIG.

In the figure, reference numeral 11 is a CD reproducing device, and this CD reproducing device 11 is composed of a CD mechanical reproducing portion 12 and the like, and audio digital signal data reproduced from this CD mechanical reproducing portion 12 is a CD ROM decoder 13 And to the D / A converter 14. Reference numeral 15 is a low-pass filter for passing the output analog signal of the D / A converter 14, and the output signal of the low-pass filter 15 is supplied to the audio amplifier 16 and output to the speaker 17.

Reference numeral 18 denotes a system control microcomputer (hereinafter referred to as a system control microcomputer). As is well known, the system control microcomputer 18 is basically a CPU, ROM, RAM, input port and output port. It is composed of (not shown), and a program for controlling the CPU is written in the ROM, and the CPU takes in external data required from the operation unit 19 connected to the input port according to this program, Alternatively, arithmetic processing is performed while exchanging data with the RAM, and if necessary, the processed data is output from the output port to the CD mechanism reproducing section 12 or the display section 20 to control the disc reproducing system.

Reference numeral 21 denotes a graphic control microcomputer. The graphic control microcomputer 21 has the same configuration as the system control microcomputer 18 and controls the CD ROM decoder 13 and the graphic display controller 22. Reference numeral 23 is a graphic VRAM that expands the video data signal-processed by the graphic display controller 22 and accumulates the data. The output data of the graphic VRAM 23 is supplied to the video monitor 25 via the video signal converter 24. To be done.

Reference numeral 26 is a GPS receiver connected to the reproducing apparatus 11, and can receive satellite signals from an antenna 27 attached to the GPS receiver 26.

The disc reproducing apparatus configured as described above can perform audio CD reproduction and ROM format CD reproduction, in particular, it reproduces specific ROM format CD map data and combines it with the satellite communication reception of the GPS receiver 26. The car navigation function can be realized with.

When performing audio CD playback, the system control microcomputer 18 controls the CD mechanical playback unit 12 to set the audio playback signal processing, and outputs the digital data output from the CD mechanical playback unit 12 to the D / A converter. It can be converted into an audio signal via 14 and the low-pass filter 15, and this audio signal can be output to the speaker 17 via the audio amplifier 16.

On the other hand, when performing the ROM format CD reproduction, the system control microcomputer 18 determines the CD ROM reproduction based on the subcode information read by the signal processing of the CD mechanical reproduction unit 12, and performs the CD ROM read and the graphic drawing. The graphic control microcomputer 21 to be controlled is instructed to read the ROM data, and the digital data output from the CD mechanical reproduction unit 12 is reproduced by the CD ROM decoder 13 into a data string that can be read by the graphic control microcomputer 21. This reproduction data is supplied to the graphic display controller 22.

The ROM data signal-processed by the graphic display controller 22 is expanded in the graphic VRAM 23 as an image drawing image and converted into a video signal by the video signal converter 24. This video signal is supplied to the video monitor 25 connected to the outside, and the map data of the CD ROM is image-drawn.

With respect to the map image of the CD ROM drawn on the video monitor 25, the graphic control microcomputer 21 reads the position information sent from the externally connected GPS receiver 26 every one second, and the CD ROM is read. It is possible to retrieve the map drawing data from the position index data and perform a car navigation display for drawing the current vehicle position information on the map image of the image monitor 25.

In this way, when the sound output such as music by the audio CD reproduction and the car navigation function by the ROM format CD reproduction are performed, the display of the display unit 20 connected to the system control microcomputer 18 built in the CD reproduction device 11 is displayed. Will be described with reference to the flowchart shown in FIG.

The current display content of the display unit 20 can be determined by the value of DPARA (Display Parameter) (step S1), and the system control microcomputer 18 determines the ROM format CD reproduction operation (step S2), When playing an audio CD (step S3), the operation is the same as in the conventional example. If DPARA = 0 (step S5), the audio CD track time is displayed (step S6), and if DPARA = 1 (step S3). S7), the absolute time of the audio CD is displayed (step S8), and if DPARA = 2 (step S7), the remaining time of the audio CD is displayed (step S9).

The value of DPARA is incremented by one each time the display changeover switch (not shown) is pressed, and the value of DPA RA is incremented by one. Steps S10-S12).

As described above, when playing an audio CD, three types of subcodes can be displayed by operating the display mode changeover switch by switching the DPA RA as in the conventional example. For example, the conventional example shown in FIG. As shown in the display diagram of, the track number and the “minutes” and “seconds” of the playback time can be displayed on the display unit 20.

On the other hand, when reproducing the ROM format CD, as described above, the position of the own vehicle is measured by the reception data of the GPS receiver 26, and this position information is displayed on the map image of the CD ROM drawn on the video monitor 25. The display 20 of the CD playback device 11 displays “Navigating”, and the system control microcomputer 18 similarly determines the ROM disk playback operation state (step S2). The information readable by the receiver 26 can be newly displayed on the display unit 20 by the DPARA value, as described above, except the subcode.

That is, the display by setting the DPARA value of the display changeover switch operation is such that if DPARA = 0 (step S13) after the display of “Navigation in progress” disappears, the GPS receiver 26 sends The current date is displayed according to the date and time information (step S14). For example, as shown in FIG. 4, this date display can display dates of the year number "92", month "02", and day "14" from the left.

If DPARA = 1 (step S15), a clock display for displaying the current time based on the date and time information from the GPS receiver 26 can be performed (step S16), and if DPARA = 2 (step S15). S15), the traveling direction of the vehicle can be displayed based on the position information from the GPS receiver 26 (step S17).

As described above, even when the car navigation function is operating on the display unit 20 of the CD player 11, the display changeover switch is operated to arbitrarily select, for example, the three types of display contents described above. It can be displayed at the time, and useful information can be obtained for the user.

[0032]

[Effect of the device]

 As described above, the disc reproducing device according to the present invention displays a plurality of date / time information and position information from the GPS receiver 26 on the display unit 20 of the CD reproducing device 11 during the operation of the car navigation function during the reproduction of the ROM format CD. Since the information can be arbitrarily selected and displayed, there is an effect that the user of the vehicle driver or the passenger can obtain useful information at any time by looking at the display content of the display unit 20.

Further, as described above, the display unit 20 of the CD reproducing apparatus 11 which has only displayed “Navigating” until now can display a plurality of information from the GPS receiver 26 as described above. There is also an effect that it can be used more effectively.

When the CD reproducing device 11 reproduces an audio CD, the sub-code information stored on the disk is naturally displayed on the display section 20 as in the conventional case. Therefore, the ROM format CD reproduction for the car navigation function operation is performed. At this time, as in the case of playing an audio CD, useful information other than the subcode information can be similarly displayed using the display unit 20.

Moreover, it has excellent features such as a simple structure and easy implementation because it can be constructed at low cost.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing a configuration of an embodiment of a disc reproducing apparatus according to the present invention.

FIG. 2 is a block diagram showing a hardware configuration of an embodiment of the present invention.

FIG. 3 is a flowchart illustrating a display operation of a display unit according to the present invention.

FIG. 4 is a display diagram showing a display example of a display unit of the present invention.

FIG. 5 is a display diagram showing a display example of a conventional display unit.

[Explanation of symbols]

 11 CD playback device 12 CD mechanical playback unit 13 CD ROM decoder 14 D / A converter 15 Low-pass filter 16 Audio amplifier 17 Speaker 18 System control microcomputer 19 Operation unit 20 Display unit 21 Graphic control microcomputer 22 Graphic display controller 23 Graphic VRAM 24 Video signal converter 25 Video monitor 26 GPS receiver 27 Antenna

Claims (3)

[Scope of utility model registration request] 1. A disc which has a reproducing function for reproducing an audio disc on which a digital signal is recorded and a ROM format disc, and a receiving function for receiving position information from a GPS receiver, and which is recorded on the disc at the time of reproducing the audio disc. In a disc reproducing apparatus equipped with a display unit for displaying information and a video monitor for displaying car navigation information together with position information from the GPS receiver during reproduction of the ROM format disc, the GPS receiver of the GPS receiver during reproduction of the ROM format disc. A disc reproducing apparatus, comprising display means for displaying received information on the disc information display section. 2. The disc reproducing apparatus according to claim 1, further comprising display means for displaying date and time information of reception of the GPS receiver on a display portion of the disc information. 3. The disc reproducing apparatus according to claim 1, further comprising display means for displaying the traveling direction of the vehicle on the disc information display portion according to the position information received by the GPS receiver.