JPH0775095B2 - Recording disk playback device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to means for displaying on a television receiver the presence or absence of a disc-shaped recording medium (hereinafter abbreviated as a disc) in a video disc player or the like. .

2. Description of the Related Art It is necessary to confirm whether or not a disc is present inside the player, such as when the power of the video disc player is turned on, and to make a decision to set a new disc or start collecting or playing an existing disc. As a method of determining the presence of the disc inside the player on the screen of the television receiver (hereinafter, abbreviated as TV screen), the second method is a needle contact capacitance system player which is one system of the conventional video disc player.
The control system shown in the figure was used.

Here, 30 is a disc, 31 is a disc detection unit that detects the presence or absence of a disc, 11 is a first color signal generation unit that generates a color signal indicating the state in which the disc 30 is present in the player, and 12 is the disc 30. A second color signal generating section for generating a color signal indicating a state not existing in the player, 13
Is a switching unit for switching the output of the first color signal generating unit 11 and the output of the second color signal generating unit 12 according to the instruction of the switching signal 21 and generating the color signal 24, and 10 is the disc presence information from the disc detecting unit 31. A color signal control unit that determines the presence or absence of the disc in the player by the signal 20 and controls the switching signal 21, and 15 is a horizontal sync signal and a vertical sync signal necessary for displaying various information signals on the television receiver 16. A composite sync signal generator that superimposes the sync signal and that generates a composite sync signal 23, and 14 is a video signal generator that combines the composite sync signal 23 and the color signal 24 to generate a video signal 25.

That is, the user of the player is informed of the presence or absence of the disc by displaying two color signals having different hues on the TV screen according to the presence or absence of the disc in the player.

Problems to be Solved by the Invention However, the conventional method has the following problems. For example, when the power of the player is turned on, even after the presence or absence of the disc is confirmed on the TV screen, one of the color signals is continuously displayed on the TV screen unless the player or the television receiver is powered off. In a place where the television receiver is installed, a bright color signal of the same color is displayed for a long time in a relatively dark restaurant or the like, which significantly deteriorates the atmosphere in the store or the quality of the player and the television receiver. I will let you.

In order to solve this problem, the system shown in FIG. 3 has been proposed. That is, the fixed switching unit 17 is added between the switching unit 13 and the video signal generating unit 14. Thus, the permission / prohibition of the input of the color signal 24 to the video signal generator 14 is controlled by a manual operation from the outside of the player. When the input of the color signal 24 is permitted, the same operation as the system of FIG. 2 is performed, but when prohibited, the TV is input.
The screen becomes a black image. However, if the input of the color signal 24 is prohibited, the problem as described above does not occur, but on the other hand, there is a problem that the presence or absence of the disc cannot be confirmed on the TV screen. It suffices to operate the fixed switching section 17 appropriately, but the player becomes extremely difficult to handle.

In view of the above problems, the present invention has an object to provide a recording disk reproducing device having a simple structure and capable of easily confirming the presence or absence of a disk without impairing the atmosphere of the place where the television receiver is installed. And

Means for Solving the Problems In order to solve the above problems, the present invention adds an automatic switching unit that does not require an operation from the outside of the player to the permission / prohibition control of the input of the color signal to the video signal generation unit, The presence or absence of a disk is first checked when the power is turned on, and the input of color signals to the television receiver is prohibited after a certain time has elapsed since the power was turned on.

Effect The present invention uses the above means, and after confirming the presence or absence of the disk on the TV screen, such as when the power is turned on or after the playback of the disk is completed, and after a lapse of a certain time after the power is turned on or the playback is completed, the automatic switching unit is activated. It controls and prohibits the input of the color signal to the video signal generation part, and makes the TV screen a black screen. Also,
When a new operation is added to the player (for example, collecting the disc, starting playing the disc, etc.), the input of the color signal to the video signal generation unit is permitted, and the original color signal is transmitted to the TV.
Make it appear on the screen. Therefore, according to the present invention, it is possible to easily confirm the presence or absence of the disc, while
It does not impair the atmosphere of the place where the television receiver is installed.

Practical Example FIG. 1 is a block diagram of an embodiment for displaying information on the presence / absence of a disc on the TV screen according to the present invention. In addition,
The same reference numerals are given to those having the same operation as in FIG. 2, and the description thereof will be omitted.

18 is an automatic switching unit, which is a switching signal from the color signal control unit 10.
22 controls permission / prohibition of the color signal 24 to the video signal generator 14.

Reference numeral 19 denotes an operation instruction control unit, which grasps the state of the player, and when a certain period of time elapses in a standby state with no control instruction given to the player after the power is turned on or when the reproduction of the disc is finished, the automatic switching unit 18 outputs a video signal. For the generator 14,
The color signal control unit 10 is instructed to prohibit the input of the color signal 24 and turn the TV screen into a black screen, and an operation instruction from the outside of the player (operation key or wireless remote control) is detected to newly control the player. If there is an instruction (collection of disc, new setting, start of playback, etc.),
In the automatic switching unit 18, the color signal control unit 10 is instructed so that the video signal generation unit 14 is allowed to input the color signal 24 and the presence or absence of the disc can be confirmed on the TV screen.

In other words, in the present embodiment, it is possible to stop displaying the disc presence information on the TV screen more than necessary, and to operate the player without paying special attention to the output control of the color signal to the TV screen if necessary. It can be done at any time in the process.

The automatic control unit 18 of this embodiment can be realized by a simple logic circuit, and the operation instruction control unit 19 can be realized by a microprocessor or the like.

EFFECTS OF THE INVENTION As described above, according to the present invention, it is possible to prevent the presence / absence of the presence / absence of a disc from being displayed on the TV screen for an unnecessarily long time, and the atmosphere of the place where the television receiver is installed and the player. -The quality of the television receiver will not be significantly degraded. In addition, it is possible to easily confirm the presence or absence of the disc on the TV screen in the process of operating the player.

[Brief description of drawings]

FIG. 1 is a block diagram of a disc information display control system of a recording disk reproducing apparatus according to an embodiment of the present invention, and FIGS. 2 and 3 are block diagrams of a conventional disc information display control system. 10 ... Color signal control section, 11 ... First color signal generation section, 12 ... Second color signal generation section, 13 ... Switching section, 14 ...
… Video signal generator, 15… Composite synchronization signal generator, 18…
… Automatic switching section, 19 …… Operation instruction control section, 30 …… Disc, 31 …… Disc detection section.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keiya Miyoshi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-60-153289 (JP, A) JP-A-61- 120374 (JP, A) JP 62-174817 (JP, A) Actual development 60-85770 (JP, U)

Claims (1)

[Claims] 1. A means for detecting the presence / absence of a disk-shaped recording medium, and 2 corresponding to different first and second color signals as information for distinguishing the presence / absence of the disk-shaped recording medium. The means for generating signals of two types and the two types of signals for distinguishing the presence or absence of the disk-shaped recording medium from the two types of signals are used according to the presence or absence of the disk-shaped recording medium.
The disc-shaped recording medium is provided in the image display device with a unit for extracting one of the signals of the types and a unit for displaying or interrupting information on the presence or absence of the disc-shaped recording medium on the image display device. The presence or absence of the disk, if the control instruction to the recording disk reproducing device is not given for a certain period of time, the display of the information on the presence or absence of the disk-shaped recording medium is interrupted, and the image display device When a control instruction is given to the recording disc reproducing device in a state where the screen is black and the display of the information on the presence or absence of the disc recording medium on the image display device is interrupted, the disc-shaped recording is performed on the image display device. A recording disk reproducing device characterized in that information display of presence / absence of a medium is restarted.