JPH05128711A - Image display - Google Patents

Abstract

(57) [Summary] [Purpose] To enable the use of both internal and external pointing devices. [Constitution] The main body side connector portion 131 is provided with a pin 134. One end of the pin 134 is in contact with one end of the spring portion 135. The power supply unit 136 is brought into contact with substantially the center of the spring unit 135. The other end of the spring portion 135 is connected to the detection circuit and grounded. When the connector portion 132 of the external pointing device is not inserted into the main body side connector portion 131, the voltage V _CC is supplied to the detection circuit. On the other hand, when the connector portion 132 is inserted into the main body side connector portion 131, the pin 134 provided on the connector portion 132 presses the pin 134. As a result, the spring part 135 is separated from the power supply part 136. Therefore, the voltage supplied to the detection circuit is lower than the voltage V _CC . The change in the voltage supplied to the detection circuit detects whether or not the external pointing device is connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device of a CD-I system, for example.

[0002]

2. Description of the Related Art In addition to audio data, image data (natural images, animation,
CD that records interactive data such as computer graphics), text data, program data, etc. and can be operated interactively
-I (CD Interactive) system has been proposed.
Since such a CD-I system has a reproducing function of characters, images, sounds, computer data, etc., it is mainly used for AV consumer equipment centering on audio / video, electronic publishing centering on characters, and information files. It is expected to be used as a new type of media that can be used for database services, education / entertainment, etc. centered on dialogue responses.

As a user interface, a CD-I player is not provided with a pointing device in its main body, and is usually operated only by an externally connected pointing device such as a mouse. this is,
This is to improve the operability when the CD-I player is used only for entertainment such as games.

Since the CD-I player is equipped with a microcomputer, it is desired to effectively utilize its function even when the disc is not reproduced. In this case, a pointing device provided integrally with the apparatus, for example, an XY device such as a cursor movement key has better operability than an externally connected pointing device. Therefore, it is desired that the CD-I player includes both a pointing device integrally provided on the main body and a pointing device that can be externally connected.

[0005]

However, X-Y
If the area is pointed so as to be effective for the device, the amount of movement and the selection of the externally connected pointing device such as a mouse will be different. Also, if you can point to all areas so that it is effective for the mouse, X
With the Y device, it takes time to select the corresponding area.

By the way, there is a demand to carry a CD-I player outside and easily use the CD-I system in a car or at a destination. However, connecting an external pointing device to the CD-I player makes it inconvenient to carry.

Therefore, an object of the present invention is to provide an image display device which can use both an internal pointing device and an external pointing device.

[0008]

According to the present invention, there is provided a first pointer which can be operated by a key provided on a housing and a second pointer which can be operated by a pointing device connected to a connection terminal of the housing. And a detection unit having a unit for detecting attachment / detachment of the pointing device, the detection unit detecting attachment / detachment of the pointing device connected to the housing, and at least recognizing its type. Is.

[0009]

When the connector of the externally connected pointing device is inserted, the pin in the main body side connector portion opens the contact point between the spring portion and the power source portion, and the voltage supplied to the detection circuit decreases. On the other hand, if not inserted, the voltage V _CC is supplied to the detection circuit via the above-mentioned spring portion. The pointing device is classified according to the change in the voltage supplied to the detection circuit.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. This embodiment is basically a CD-
Although it is an I player, it can also reproduce a CD-DA (CD on which a digital-audio signal is recorded). Further, when the CD is not reproduced, it has a function of displaying a clock and a calendar on the screen of the LCD display (referred to as a stationary function) as described later. As the video and audio signal terminals of this embodiment, IN / OUT can be switched to output a reproduced video signal and / or audio signal, and a video signal and audio signal from an external source can be displayed on the LCD.
It also has a function that can be played on the display and built-in speaker.

1 and 2 show a C to which the present invention is applied.
1 shows the overall structure of a D-I player, and 1 shows the entire CD-I player to which the present invention is applied.
The CD-I player 1 is integrated with an LCD display 19 so that it can be easily carried to the outside, and is made compact and lightweight by integrating circuits and using chip parts. .. The overall size of the CD-I player 1 is, for example, 140 mm in width and 170 m in length.
m and height 60 mm.

The player body 2a of the CD-I player 1
In the housing of the disk drive, a disk drive unit that rotationally drives a loaded disk (not shown), a head drive unit that moves the optical head in the radial direction of the disk, and signal processing of the reproduction signal from the optical head. The circuit board, etc. are stored.
Further, a computer including a 68000-series CPU is housed.

A power lamp 3, a power switch 4, and a CD-DA button section 5 are provided on the front surface 2b of the player body 2a. The CD-DA button section 5 is provided with AMS buttons 5a and 5b for automatically cueing a song, a stop button 5c, and a play / pause button 5d. Further, an open button 10 is provided on the upper part of the front surface. Furthermore, on the upper surface of the player main body 2a,
A disc loading portion 24 for ensuring loading of the disc, a chucking portion 22 for fixing the loaded disc, an inner lid 2
Detecting holes 2c and 2d for detecting that 3 is installed in the player main body 2a are provided.

An inner lid 23 is provided at the rear edge of the player body 2a.
Is rotatably arranged. The inner lid 23 covers the upper surface of the player body 2a. On the upper surface of the inner lid 23, the trigger button 11a, the trigger button 1
1b and an XY device 12 are arranged. The X-Y device 12 is designed so that the positions of the cursor displayed on the LCD display 19 in the X-direction and the Y-direction can be designated by pressing the portions deviated vertically and horizontally from the center thereof. Further, the inner lid 23 has a detection protrusion 23a which is inserted into the detection holes 2c and 2d when it is closed.
And 23b are provided.

An outer lid 14 is rotatably disposed so as to overlap the inner lid 23 with the shaft support 13 as a fulcrum. The user can easily set the optimum opening / closing angle by rotating the outer lid 14 up and down. The outer lid 14 is held at an angle that allows the LCD display 19 to be easily seen, and at a position that does not hinder the opening / closing operation of the inner lid 23 when the disc is loaded into or unloaded from the disc loading portion 24 of the player body 2a. It should be noted that discs of 8 cm and 12 cm types can be used. Further, the outer lid 14 can be manually opened and closed, and can be opened up to an opening and closing angle of 90 degrees or more.

On the right side surface of the player body 2a, a built-in speaker 6 for outputting the reproduced sound of the disc, an external remote control terminal 7, an in / out switch 8 for controlling the in / out of the line with the external device, A right channel audio terminal 9a, a left channel audio terminal 9b and a video terminal 9c are provided respectively. The external remote control terminal 7
In addition to the remote controller of the CD-I player 1, an external pointing device such as a mouse or a joystick can be connected.

On the other side surface of the player body 2a, a DBB (dynamic bass boost) switch, a volume adjusting dial for adjusting the level of reproduced sound, and a headphone terminal for connecting headphones are provided, which are not shown. Further, on the rear surface side, although not shown, an external battery mounting surface and a battery terminal are provided. Furthermore,
On the bottom surface, a lithium battery loading part and a CL (not shown)
Buttons are provided.

An LCD display 19 having a size of, for example, 4 inches is provided on the inner surface of the outer lid 14. Outer lid 14
When you open, the LCD display 19 is exposed and the LCD
The screen of the display 19 becomes visible. Also,
An LCD drive switch 15 is arranged near the LCD display 19. By operating the LCD drive switch 15, it is possible to control ON / OFF of the LCD display 19. When reproducing a CD-DA disc instead of the CD-I, only audio reproduction is performed, so that it is not necessary to display on the LCD display 19.
Further, even when only audio reproduction is performed on the CD-I / CD-DA disc, the display on the LCD display 19 is not necessary. In this way, when there is no need to display the screen, the LCD drive switch 15 can be used to save power consumption.
Thus, the LCD display 19 can be selectively turned off.

Further, a hue adjusting knob 16, a color adjusting knob 17, a brightness adjusting knob 18, and an open knob 22 are provided on the side surface of the outer lid 14. LC
A lock portion 21a is provided above the D display 19 and a lock hole 21b fitted into the lock portion 21a.
Is provided in the main body portion 2a, and the outer lid 1
The closed state of 4 is locked.

The CD-I includes audio data,
Since high-speed processing is required in real time, processing in machine language is performed. As a CPU for that purpose, 68000, which is a 16-bit CPU developed by Motorola, Inc.
The system is specified. The user interface is 2
Trigger buttons 11a, 11b and XY device 1
2 are provided so that an external pointing device can be connected. For output, two systems of audio and video are prepared. Further, the CD-I player is adapted to play back a music CD-DA.

The signal processing configuration of the CD-I player 1 to which the present invention is applied will be described below with reference to FIG. Figure 3
FIG. 3 is a block diagram of the CD-I player 1. In FIG. 3, the disk 31 is C
It is rotated at LV (constant linear velocity). Spindle motor 3
The rotation of 2 is controlled by the spindle servo circuit 33 based on the clock reproduced by the CD reproducing circuit 34. Further, the output of the system controller 35 is supplied to the spindle servo circuit 33.

The recording signal of the disk 31 is the optical head 36.
Will be played. The optical head 36 is supported by a biaxial device. The output of the focus / tracking servo circuit 37 is supplied to the biaxial device. A system controller 35 is connected to the focus / tracking servo circuit 37. In the focus / tracking servo circuit 37, based on the output of the photo detector,
Servo is applied to the optical head 36 in two axes of the focus direction and the tracking direction.

The optical head 36 can be moved in the radial direction of the disk 31 by a slide feed mechanism 38 using a linear motor, for example. The slide feeding mechanism 38 is controlled by the sled servo circuit 39.
The sled servo circuit 39 includes the system controller 3
5 is connected. The slide feed mechanism 38 enables the optical head 36 to access a desired track position.

The output of the optical head 36 is supplied to the CD reproducing circuit 34 via the RF amplifier 40. The CD reproduction circuit 34 includes a bit clock reproduction circuit, an EFM demodulation circuit,
It is composed of a CIRC error correction circuit and the like. In the CD reproducing circuit 34, the output of the optical head 36 is EFM demodulated and subjected to error correction processing. The CD reproduction circuit 34 is controlled by the system controller 35.

The output of the CD reproducing circuit 34 is supplied to the CD-ROM reproducing circuit 41. CD-ROM reproduction circuit 41
Is composed of a sync detection circuit, a descramble circuit, an error correction circuit, and the like. The CD reproducing circuit 34 detects the sync and descrambles it. Then, the header address is checked and the target block is accessed. The CD-ROM reproducing circuit 41 is controlled by the system controller 35. System controller 3
5, CD-DA button section 5, trigger button 11
Inputs are provided from a, 11b and the XY device 12.

Reference numeral 44 is a CPU for controlling the CD-I system. As the CPU 44, a 68000 series CPU is used. A master controller 45 and an external pointing device such as a mouse 46 are connected to the CPU 44. The external pointing device is
It can be connected to the system controller 35. The CPU 44 and the system controller 35 are bidirectionally connected. A bus 47 is derived from the CPU 44. Although not shown, output signals of the open / close detection switches (detection holes 2c, 2d, protrusions 23a, 23b) of the inner lid 23 are given to the CPU 44 or the system controller 35. The CPU 44 and the master controller 45 may be integrated into one chip.

The data reproduced by the CD-ROM reproducing circuit 41 is sent to the bus 47. The bus 47 has a RAM 49a via video controllers 48a and 48b, respectively.
And 49b are connected. A system ROM 50 and a non-volatile RAM 51 are bidirectionally connected to the bus 47. An audio decoder 52 is connected to the bus 47. The system ROM 50 contains D-Shell.
(Built-in software) and CD-RTOS (operating system) are stored. Non-volatile RAM
51 has a capacity of, for example, 8 kbytes.

The image data of the data reproduced by the CD-ROM reproduction circuit 41 is controlled by the CPU 44.
It is supplied to the video controllers 48a and 48b. The video controllers 48a and 48b form a video signal based on the image data. This video signal is supplied to the video synthesizer 53. The video synthesizer 53 synthesizes the video signal from the video controller 48a and the video signal from the video controller 48b. The output of this video synthesizer 53 is L
It is supplied to the LCD display 19 via the CD drive circuit 54. The LCD display 19 is driven by the LCD
It can be turned on / off by the drive button 15.

The audio data of the data reproduced by the CD-ROM reproducing circuit 41 is supplied to the audio decoder 52 under the control of the CPU 44. When the audio data is ADPCM, the audio decoder 52 decodes the ADPCM. The decoded audio data is supplied to the D / A converter 55 and converted into an analog signal. Then, it is output from the output terminal 58 via the low-pass filter 56 and the amplifier 57. The audio signal level output from the output terminal 58 can be set by the volume adjustment dial.

A display example of the image display device according to the present invention will be described below with reference to FIGS. FIG. 4 is a control panel used for environment setting and file deletion, and FIGS. 4A, 4B, and 4C show the first and second sections thereof.
And the third term. These items can be switched by clicking the icon at the bottom of the screen.

4A and 4B are panels for setting an environment. 4A, icons corresponding to items such as time setting, initial screen, clock display, calendar display, CD-I auto start, and end of environment setting are displayed in order from the top. On the panel of FIG. 4B, icons corresponding to auto power off, set disk compatible, key speed, test pattern, and demo item are displayed in order from the top. The desired settings can be made by placing the cursor on the desired icon and clicking. The test pattern and demo are icons for selection of what is displayed on the LCD display 19, rather than environmental settings.

FIG. 4C is a panel used for selectively or collectively deleting files when the file capacity of the nonvolatile RAM 51 becomes large. The total amount of data in the memory is displayed in the bar graph display section 61 at the top of the panel in FIG.

FIG. 5 is a display example of the menu screen. As shown in FIG. 5A, six icons are displayed on the upper part of the screen of the LCD display 19. These icons are the clock icon 6 as shown enlarged in FIG. 5B.
2, calendar icon 63, world clock icon 64,
They are a menu icon 65, a CD-DA icon 66, and a CD-I icon 67. XY the desired icon
By selecting with the device 12 or the mouse 46, it is possible to switch to the screen of the selected icon.

FIG. 6 shows a display example when the clock icon 62 is selected. An analog clock 68 is displayed in the approximate center of the screen.
However, the digital clocks 69 are displayed below them. Date 70 and day 7 on both sides of digital clock 69
1 is displayed respectively.

FIG. 7 is an example of a calendar display when the calendar icon 63 is selected. FIG. 7A shows a screen when one week starts on Sunday. The date of the day is boxed for easy recognition. By pressing the XY device 12 to the left, the arrow indicated by 63a is displayed and the calendar for the previous month can be viewed. Also, XY
By pressing the device 12 to the right, an arrow indicated by 63b is displayed and the calendar for the next month can be viewed. By operating the trigger button 11a or 11b in the control panel shown in FIG. 4A, the calendar display starting on Sunday can be changed to the calendar starting on Monday. FIG. 7B shows a calendar in which the start of the week is Monday. For example, when a Sunday-started calendar is used in Japan and a Monday-started calendar is used in Europe and the like, the calendars can be switched with a single button.

FIG. 8 shows a display example when the world clock icon 64 is selected. In FIG. 8, a rectangular world map 72 is displayed in the approximate center of the screen. World map 72
An area setting function is added by a stripe pattern that moves horizontally above the XY device 12.
After setting this area, the trigger button 11a,
By operating 11b, the month and date of the area, the current time, and the area name are displayed. A daylight saving time (DS TIME) setting function is provided for areas that use daylight saving time. When the area is set, the area is displayed bright in the morning / day and dark in the night. The above-mentioned clock, world clock, and calendar display are stationery functions, and are CD-I or C
It can be selected at any time even during D-DA playback.

FIG. 9 shows a display example of a screen when the disc loaded in the CD-I player 1 is a CD-I. A CD-I disc display portion 73 is displayed on the left side of the screen, and a start icon 74 for starting playback of the disc is displayed on the right side thereof. And below them,
A label display portion 75 that shows the title of the CD-I disc is provided.

FIG. 10 shows a display example of a screen when the disc loaded in the CD-I player 1 is a CD-DA. On the left side of the screen is a CD-DA disc display section 76
However, a performance mode icon 77 for selecting the reproduction mode of the disc is displayed on the right side thereof. Further, a data display portion 78 for displaying the track number and the playing time of the CD-DA disc is arranged below. Whether the loaded disc is a CD-I / CD-DA or not is determined by the TOC (Tabl in the lead-in area of the disc.
The player identifies from the contents of e Of Contents).

The operation of this embodiment will be described in more detail below with reference to the flow chart of FIG. First, when the power switch 4 is turned on, CS of the nonvolatile RAM 51 is
It is checked whether the D file is normal (step 81). The CSD file is the information in the system ROM 50 loaded by the operating system. This check is performed by opening the CSD file in RAM. If it can be opened, the process proceeds to the next step 83. If it cannot be opened, the control proceeds to step 82.

If it cannot be opened, the RAM 51
It is determined that the CSD file has not been copied normally. This occurs because a large amount or a large capacity file already exists in the RAM 51 and the capacity for copying the CSD file cannot be secured. Therefore, in step 82, the file deletion screen (see FIG. 4C) is displayed to prompt the user to delete the file. The user erases the file,
When the capacity for copying the CSD file is secured, the internal reset is performed. After resetting, the status will be the same as immediately after power-on.

On the other hand, when the CSD file is opened, it is checked whether or not the clock and various user setting items are set (step 83). Control panel (Figure 4A and B) to set user settings
Is displayed (step 84). Trigger buttons 11a, 11b and XY device 12 are used to set items. "Exit" in the control panel
The key check ends by selecting an item.
Then, the control moves to step 91, and the menu screen (see FIG. 5A) is displayed.

When the key check is unnecessary, the control shifts from step 83 to step 85, the menu screen (FIG. 5A) is displayed, and the memory check (step 86) is performed. This check is set using the control panel and determines whether the environment setting data stored in RAM is correct. For example, the consistency of the checksum and the fixed value written in the RAM is used.
If the contents are correct, the control proceeds to step 87, and it is detected whether or not the inner lid 23 is closed (step 8).
7). Otherwise, control proceeds to step 88. When the backup battery is exhausted or removed, the contents of the RAM become incorrect. The RAM for storing the environment setting data may be either an area in the RAM 51 or a separate non-volatile RAM.

At step 88, default values including date / time setting values are written as environment setting data in the RAM. Then, on the screen of the display 19, a message as to whether or not the user makes settings is displayed (step 89). When the setting is not performed, that is, when the default value is acceptable, the process proceeds to step 87. On the other hand, when the user makes settings, the control panel is displayed (step 90) and the trigger button 1
The setting is performed by operating the 1a, 11b and the XY device 12. After the setting is completed, a menu screen is displayed by selecting the end item on the control panel (step 91).

Step 8 after steps 86 and 91
In 7, it is detected whether or not the inner lid 23 is closed. When the inner lid 23 is closed, CD-I and CD-DA
Since it is possible that any of the above is mounted, the control moves to step 92 for determining the presence or absence of the disk. On the other hand, when this is open, it is determined that the disc is not mounted, and the clock system screen (see FIGS. 6, 7, and 8) corresponding to the stationary function is displayed, and the control moves to step 95.

If in step 92 it is determined that a disc is loaded, then control transfers to step 93. On the other hand, if it is determined that the disc is not mounted, the control moves to step 95, and the clock system screen is displayed.

In step 93, a disk check is performed. That is, the TOC recorded in the lead-in track of the innermost circumference of the disc is accessed, the type of the disc is detected from the data, and it is determined whether or not the disc can be handled. In some cases, the type of disc is determined from the index 0 of track 1. Generally, CD-I or CD-I, CD-DA or CD-DA, CD
-What is treated as I / CD-DA or CD-I / CD-DA, and others (CD-V and CD-XA
Etc.). CD-I player 1 of this embodiment
Can reproduce CD-I, CD-DA, CD-I / CD-DA, or those handled as these. If it is determined that the mounted disc can be handled, control passes to step 94, otherwise control passes to step 96.

When it is determined that the disc such as a CD-V cannot be handled by the player, a panel of a message indicating that reproduction is impossible is displayed (step 96).
It is detected whether or not a predetermined time has elapsed since this display was made (step 99), and after a predetermined time, the process proceeds to step 95 of displaying the clock system screen. In this step 99, the inner lid 23
May be the step of determining whether a has been opened. That is, you may make it loop until a disc is taken out.

As described above, the clock system screen (step 95) is of four types: clock, calendar, world clock, and menu. The user can select any screen by clicking the corresponding icon on the screen. In addition, the screen displayed when the power is turned on is the same as Step 84 or 90.
Is set as the first screen to be displayed in.

In the display of the reproduction system screen, the screen corresponding to the disc type detected in step 93 is displayed.
That is, when the disc is a CD-I disc, the CD-I screen (see FIG. 9) is displayed.
However, when the disc is a CD-DA disc, the CD-DA screen (see FIG. 10) is displayed. Also, CD-I
A CD-I screen is prepared for a disc that is treated as a / CD-DA disc. However, at this time the CD
A DA screen is also prepared, and it is possible to switch from the CD-I screen to the CD-DA screen. Further, even when the CD-DA screen is displayed and after the reproduction of the CD-DA is started, an arbitrary screen of the clock system screen can be selected by the user's screen selection. The CD-I screen is displayed and the CD-I
The same selection can be made even before the playback of (1) starts.

The inner lid 23 when the playback screen is displayed
Is opened (step 97), a clock system screen is displayed.
The screen displayed at this time is the screen last displayed in the clock system screen when the power is turned on. After the power is turned on, the reproduction system screen is directly displayed, and when there is no lastly displayed clock system screen, the screen set as the first screen displayed on the control panel is displayed.

Further, when the control shifts to step 95 and the clock system screen is displayed, even if the inner lid 23 is opened in step 98, the screen display does not change. When the inner lid 23 is closed, the disc may have been newly inserted.
The control returns to step 92 for checking the presence / absence of a disk again.

FIG. 12 is a diagram showing a display example when the clock icon is selected. In FIG. 12, the cursor 1
01 is controlled to move by the XY device 12, and the cursor 102 is controlled to move by a pointing device such as a mouse connected externally. When the right side of the XY device 12 is pushed, the cursor 101 moves rightward by a certain distance. When the left side of the XY device 12 is pressed, the cursor 101 moves leftward by a certain distance. When the trigger buttons 11a and 11b are pressed, the screen display indicated by the cursor 101 is switched.

When the mouse is moved up, down, left or right, the cursor 102 is moved in accordance with its moving direction and moving amount. Press the trigger button of the mouse, cursor 1
The screen display indicated by 02 is displayed. In addition,
At this time, the cursor 101 of the XY device 12 is automatically moved in association with the cursor 102. Further, even if the cursor 102 is used to point to a portion other than the icon and the trigger button of the mouse is pressed, the mouse is not made to react. In this example, the case where the icons are lined up left and right on the screen of the clock is shown, but the same is true when the icons are lined up vertically or vertically.

As described above, in order to cause the cursor 101 of the XY device 12 to indicate the icon indicated by the cursor 102 of the mouse in accordance with the movement of the externally connected mouse, the following operation is performed. Needed. This operation will be described with reference to the flowcharts of FIGS. 13 and 14.

FIG. 13 is a flowchart of the operation of the externally connected pointing device. In FIG. 13, monitoring of use of the externally connected pointing device and its trigger button is started.
A mouse, for example, is used as the pointing device. In step 112, it is detected whether or not the mouse has been used, and if the mouse has been used, its moving direction and moving amount are detected (step 113). The cursor 102 is moved to the update position based on the detection result (step 114). Then, it is detected whether or not the trigger button has been used (step 115). If the mouse is not used in step 112, the control proceeds to step 115.

In step 115, if the trigger button is not used, the process returns to step 112. On the other hand, when the trigger button is used, it is detected whether or not the cursor 102 is on the icon (step 116). If it is not on the icon, the process returns to step 112. On the other hand, when the cursor 102 is on the icon, the cursor 101 is moved to the icon designated by the cursor 102 (step 117). In step 118, the icon designated by the cursor 102 performs a predetermined operation. After the operation is completed, the process returns to step 112.

FIG. 14 is a flowchart of the operation of the XY device 12 attached to the main body. In FIG. 14, trigger buttons 11a, 11b and X- attached to the main body
Monitoring for the use of the Y device 12 is started. In step 122, it is detected whether or not the XY device 12 is used, and if it is used, the moving direction is detected (step 123). The cursor 101 is moved according to the detected moving direction (step 124). In step 125, the trigger button 11
It is detected whether or not a and 11b are used. If the XY device 12 is not used in step 122, the control proceeds to step 125. If the trigger buttons 11a and 11b are not used, the process returns to step 122. On the other hand, the trigger buttons 11a and 11b
When is used, the icon designated by the cursor 101 performs a predetermined operation. After the operation is completed, step 122
Return to.

FIG. 15 is a principle view of a switch for detecting an externally connected pointing device, and is a view substantially showing an internal structure of the external remote control terminal 7. In FIG. 15, the connector part 132 of the external pointing device is inserted into the main body side connector part 131. The connector section 132 is provided with pins 133 for various signals. Main body side connector portion 13 corresponding to the pin 133
Pins for various signals are provided at position 1. The body-side connector portion 131 is provided with a pin 134 that contacts one end of the spring portion 135. The other end of the spring portion 135 is connected to one end of the resistor R and a detection circuit (not shown). The other end of the resistor R is grounded. The power supply 1
One end of 36 is contacted and the other end is connected to voltage Vcc.

The connector portion 132 is the main body side connector portion 13.
If it is not inserted in 1, the voltage Vcc is
Is supplied to the detection circuit via. On the other hand, the connector portion 13
When 2 is inserted into the main body side connector portion 131, the pin 134 is pressed in the Q direction by the pin 133. Therefore, the contact point between the spring part 135 and the power source part 136 is opened,
The voltage supplied to the detection circuit drops. This makes it possible to detect that the terminal of the external pointing device is connected to the external remote control terminal 7.

FIG. 16 is a flowchart of the operation when the connector section 132 is attached / detached to / from the external remote control terminal 7. When the pointing device comes into contact with the external remote control terminal 7, an interrupt signal is generated from the pointing device and the interrupt process starts (step 152). At step 153, it is determined whether an external pointing device is attached. If not installed,
It is determined whether or not to remove (step 159). When removed, the information that the external pointing device does not exist is stored in the software (DS) in the main body 2a.
(step 160), step 1
Return to 52. If it is not removed in step 159, the process returns to step 152.

When the external pointing device is attached, a baud rate (hereinafter referred to as bps) which is a transfer rate is set (step 154). In this case, there are two types of bps, and first 1200 bps
Is set. At this time, if the transfer rate of the external pointing device is set to 1200 bps, the ID number of the external pointing device can be detected. By checking this ID number, the type of external pointing device such as a mouse or joystick can be determined (step 155). If the ID number can be checked, the ID number of the external pointing device is D
-Transmitted to Shell (step 158). on the other hand,
When the transfer rate is set to 1200 bps and the ID number cannot be checked, the transfer rate is set to 9600 bps (step 156). At this time, the ID number of the external pointing device is checked to determine its type (step 157). If the ID number cannot be checked, the process returns to step 152. If the ID number is checked, the ID number of the external pointing device is transmitted to D-Shell (step 158). Then, the process returns to step 152.

[0062]

According to the present invention, which of the internal pointing device and the external pointing device is being used is detected, and the external pointing device is classified. For this reason, the CD-ROM can be recorded on both the internal pointing device and the external pointing device.
It becomes possible to control the operation of the I player.

[Brief description of drawings]

FIG. 1 is a perspective view of a CD-I player to which the present invention is applied.

FIG. 2 is a perspective view of a CD-I player to which the present invention is applied.

FIG. 3 is a block diagram of a signal processing system of the CD-I player 1.

FIG. 4 is a diagram showing a display example of a control panel used for environment setting and file deletion.

FIG. 5 is a diagram showing a display example of a menu screen.

FIG. 6 is a diagram showing a display example when a clock icon is selected.

FIG. 7 is a diagram showing a calendar display example when a calendar icon is selected.

FIG. 8 is a diagram showing a display example when a world clock icon is selected.

FIG. 9 is a diagram showing a display example of a screen when a CD-I disc is loaded.

FIG. 10 is a diagram showing a display example of a screen when a CD-DA disc is loaded.

FIG. 11 is a flowchart of the operation of the CD-I player 1 to which the present invention is applied.

FIG. 12 is a diagram showing a display example when a clock icon is selected.

FIG. 13 is a flowchart of the operation of a pointing device connected externally.

FIG. 14 is a flowchart of the operation of the XY device.

FIG. 15 is a diagram showing an internal structure of an external remote control terminal.

FIG. 16 is a flowchart of an operation when the connector unit of the external pointing device is attached to and detached from the external remote control terminal.

[Explanation of symbols]

 2a Player main body 12 XY device 14 Outer lid 19 LCD display 23 Inner lid 62 Clock icon 63 Calendar icon 64 World clock icon 65 Menu icon 66 CD-DA icon 67 CD-I icon 131 Main body side connector section 132 Connector section

Claims (1)

[Claims] 1. A first unit operable with a key provided on a housing.
And a second pointer operable by a pointing device connected to the connection terminal of the housing, and a detection means having a means for detecting attachment / detachment of the pointing device, wherein the detection means is the housing. An image display device characterized by detecting attachment / detachment of a pointing device connected to a device, and at least recognizing its type.