JP4058418B2 - Recording or playback device - Google Patents

Description

  The present invention relates to a recording or reproducing apparatus (VTR) that can use both a rechargeable secondary battery and a primary battery such as a dry battery, and more particularly to a means for extending a recording time when using a dry battery.

  As a drive power source for a camera-integrated VTR device, it has become possible to drive a dry battery as a power source in addition to a Li ion battery or a Nid battery. In particular, by using a dry battery as a power source, there is a convenience such that it is possible to easily deal with troubles caused by running out of charge when shooting outdoors such as outdoors.

  By the way, in recent years, a camera-integrated VTR device has been developed that is equipped with a liquid crystal color monitor in addition to the conventional viewfinder device, so that the photographed screen can be confirmed with a larger image than the conventional viewfinder. In this case, the VTR apparatus as a whole requires more power. When a VTR that consumes a large amount of power is driven by a dry cell, the dry cell is consumed and the capacity of the dry cell is lost in a short time. Therefore, a display showing the remaining battery level is indispensable. .

However, when using a dry cell as described above, since the discharge voltage characteristic of the dry cell is unstable compared to a Li ion battery or the like, it is not possible to display the remaining battery capacity that can be effectively used when using the dry cell. .
On the other hand, even in an apparatus not equipped with a liquid crystal monitor, the same operation control is always performed regardless of the type of power supply mounted in the apparatus. For this reason, when a dry cell is used as a power source, it has not been possible to control the entire apparatus with low power consumption giving priority to long-time shooting.

  By the way, in the case of a camera-integrated VTR device, a camera position for selecting a camera mode for capturing a camera output image, a fast playback mode for selecting and playing back a recorded video image, and fast forward / rewind (FF / REW) In general, there are three positions that can be selected: a VTR mode position that can execute the mode, and a power-off position that turns off the entire apparatus.

  In this case, since there is no mode in which the drive motor is rotated at a high speed or mode transition in which a large current is temporarily required at the camera position, it is possible to use a dry battery as a power source. However, in the VTR mode, there are FF / REW modes in which the drive motor is rotated at a high speed and a cueing operation for finding a recording position, and a mode in which a sharp mechanical chassis control that temporarily requires high power is required. For this reason, as a result, it is impossible to realize driving by a dry battery regardless of the camera / VTR position.

  In view of such circumstances, an object of the present invention is to provide a recording or reproducing apparatus that can effectively use both the secondary battery and the primary battery.

The recording or reproducing apparatus according to the present invention is an apparatus for recording or reproducing an image, wherein when the attached power source is a dry cell or a battery other than a dry cell, and the power source is a dry cell A first remaining amount detecting means for detecting the remaining amount of the dry battery; a second remaining amount detecting means for detecting the remaining amount of the battery when the power source is a battery other than a dry battery; A display unit capable of displaying a remaining amount; a selection unit for selecting one of a plurality of operation modes; and a predetermined operation mode selected from the plurality of operation modes by the selection unit. and control means for changing in accordance with the control content according to the operation mode of the type of the determined power by said discrimination means, said control means, supply discriminated by said discriminating means when the battery , As well as allow the transition to the predetermined operation mode, the remaining amount detected with the second remaining amount detecting means on the display means is displayed in the first display mode, which is determined by said determining means When the power source is a dry battery, if the result of the remaining amount detection by the first remaining amount detecting means is equal to or higher than the operable voltage of the predetermined operation mode, the transition to the predetermined operation mode is permitted, and The remaining amount detected using the first remaining amount detecting unit is displayed on the display unit in a second display form different from the first display form, and the remaining amount is detected by the first remaining amount detecting unit. If the result is less than the operable voltage of the predetermined operation mode, the transition to the predetermined operation mode is prohibited, and the display means has a third different from the first and second display modes. Turkey is the remaining amount displayed on the display form The features.

In recording or reproducing apparatus of the present invention, before Symbol display means, the power is displayed in a form obtained by converting the remaining amount as the first display mode to the driving time of the time of the battery, the power source when the battery As the second display form, the remaining amount is displayed in a form corresponding to the voltage of the dry battery.

According to the present invention, it is possible to change the control content related to a predetermined operation mode in accordance with the installed power source and its remaining amount, and also change the remaining amount display method. Therefore, both the secondary battery and the primary battery can be changed. Can be provided.

Hereinafter, preferred embodiments of a recording or reproducing apparatus according to the present invention will be described with reference to the drawings.
FIG. 1 shows a first embodiment of the recording or reproducing apparatus of the present invention. In the figure, reference numeral 1 denotes a VTR device. Although FIG. 1 shows a portion related to the feature of the present invention, it is assumed that the basic configuration of an imaging unit (camera head), a recording / reproducing unit, an image display unit, and the like is included.

  Further, in FIG. 1, 2a is a primary battery such as a dry battery attached to the VTR device 1, 2b is a secondary battery such as a Nid battery attached to the VTR device 1, and 3a is included in and attached to the VTR device 1. Power supply determination terminals 4a and 5a for determining the type of power supply (primary battery 2a or secondary battery 2b) are power supply terminals to which power is supplied. Further, 3b is provided in the primary battery 2a, and is in contact with the power supply determination terminal 3a, so that the terminal for detecting the type of power supply mounted on the VTR device 1 is in contact with the power supply terminals 4a and 5a. This is a terminal for supplying power to the VTR device 1.

  A power supply unit 6 is connected to the power supply terminals 4a and 5a for supplying necessary power to the entire apparatus, and 7 is a pull-up resistor connected to the detection signal line 8 of the power supply type. This power supply type detection signal line 8 is connected to the operation mode control microcomputer 9 for controlling the operation mode of the entire apparatus from the power source discrimination terminal 3a. 10 is an operation button for selecting an operation mode of the VTR device such as recording / reproducing / fast-forwarding, and 11 is a viewfinder type display means (11) which can confirm a video signal to be recorded or reproduced by eyepiece. 1) and 13 are display means (2) such as a liquid crystal display panel capable of confirming a video signal to be recorded or reproduced with a larger image than the display means 11, and 12 is disposed between the display means 13 and the power supply terminal 5a This is a switch for turning on / off (OFF) the power to be supplied to the display means 13 under the control of the operation mode control microcomputer 9.

Next, the operation of the first embodiment of the present invention will be described.
FIG. 2 is a flowchart showing an operation when the operation mode control microcomputer 9 starts operation in the fast forward / rewind (FF / REW) mode by supplying a large current to the drive motor so as to drive the recording medium at a high speed. It is. When the fast forward / rewind button provided in the operation button 10 is operated, the operation mode control microcomputer 9 determines whether the power source mounted in the VTR device 1 is the primary battery 2a (dry battery) or the secondary battery. It is determined whether the battery 2b (Nicd battery or the like) is used. When the mounted power source is the primary battery 2a, the power source type detection signal line 8 is grounded inside the primary battery 2a and becomes a low level signal.

  On the other hand, when the secondary battery 2b is attached to the VTR device 1, the power supply type detection signal line 8 is not grounded inside the secondary battery 2b, and thus becomes a high level signal. When a high-level signal is input from the power supply type detection signal line 8, the operation mode control microcomputer 9 determines that the attached power supply is the secondary battery 2b such as Nicd. By controlling the switch 12 to be turned on, the tape feeding drive motor is rotated at a high speed after the display means 13 is operated, and the mode is changed to the FF / REW mode.

  When a low-level signal is input from the power supply type detection signal line 8, the operation mode control microcomputer 9 determines that the attached power supply is a dry battery. In order to keep the maximum value of power consumed by the entire apparatus low, the operation mode control microcomputer 9 controls the switch 12 to turn off the power of the display means 13. Then, after this, the tape feeding drive motor is rotated at a high speed to shift to the FF / REW mode. As a result, control is performed so as to suppress the power supply voltage drop due to the internal resistance component of the dry battery by the amount corresponding to the power consumed by the display means 13.

  Next, FIG. 3 shows a second embodiment of the recording or reproducing apparatus of the present invention. In the second embodiment, the VTR apparatus 1 to the display means 11 described above are included, and these members have substantially the same configuration and operation as those in the first embodiment.

  In FIG. 3, reference numeral 20 denotes a switch for selecting the operation mode of the entire VTR apparatus 1. The operation mode selection switch 20 is used to turn off the camera position for camera shooting, the VTR position for playing back a captured image or performing a fast forward / rewind operation for searching for a recording position, and the entire apparatus. Three positions of the power-off position can be selected. Reference numeral 22 denotes a power supply voltage detection signal line connected to the operation mode control microcomputer 9 via the A / D converter 21 in order to detect the terminal voltage of the power supply terminal 5a.

  FIG. 4 is a flowchart showing the operation in the second embodiment. When the operation mode selection switch 20 is operated at a position other than the power-off position, the operation mode control microcomputer 9 determines the position at which the operation mode selection switch 20 is operated. When the camera position is selected, the entire VTR device 1 is shifted to a camera recording standby mode that can shift to camera shooting. When the VTR position is selected, the signal level of the control line of the power supply type detection signal line 8 is detected in order to determine the type of power supply attached to the VTR device 1.

  When a high level signal is input, the attached power source is determined to be the secondary battery 2b such as Nicd, and the entire apparatus is shifted to the VTR mode. When a low level signal is input, the power supply mounted on the VTR device 1 is determined as the primary battery 2a (dry battery), and the battery voltage data input from the power supply voltage detection signal line 22 is read. When the voltage of the dry battery is equal to or higher than the voltage required for the transition to the VTR mode, the transition to the VTR mode is performed as it is. On the other hand, when it is determined that there is a possibility that the operation in the VTR mode cannot be guaranteed since the dry battery has been consumed, a display as shown in FIG. Warn the user that it cannot operate in mode.

  Here, FIG. 6 shows the operation in the case where the type of the battery mounted in the circuit configuration of the second embodiment (FIG. 3) is detected, and the detection method and the detection method of the remaining battery level are switched depending on the detected type of the power source. 4 is a flowchart showing the operation of the mode control microcomputer 9;

  In the battery remaining amount process, the operation mode control microcomputer 9 reads the power supply voltage data input from the power supply voltage detection signal line 22 in order to detect the terminal voltage of the battery terminal. Next, the type of the mounted battery is determined based on the signal level input from the power supply type detection signal line 8. When the mounted battery is a power source such as Nicd, the so-called minimum voltage for comparing whether or not the data input from the power supply voltage detection signal line 22 is smaller than the power supply voltage value data measured so far. Perform data extraction processing. If lower voltage data is detected, the minimum value voltage data is updated and stored in the microcomputer, otherwise the voltage data is not updated.

  Next, based on the power supply voltage data stored in the microcomputer, the time data converted into the battery driveable time is displayed as shown in FIG. 5B, and this process is terminated. When the attached battery is a dry battery, the operation mode control microcomputer 9 performs processing such as holding the minimum value of the data input from the A / D conversion unit 21. In this case, control is performed so as to perform display (FIG. 5C) corresponding to the battery voltage output in real time.

It is a block diagram which shows 1st Embodiment in the recording or reproducing | regenerating apparatus of this invention. It is a flowchart which shows the operation | movement in the 1st Embodiment of this invention. It is a block diagram which shows 2nd Embodiment in the recording or reproducing | regenerating apparatus of this invention. It is a flowchart which shows the operation | movement in the 2nd Embodiment of this invention. It is a figure which shows the example of the battery information output to the display means in the 2nd Embodiment of this invention. It is a flowchart which shows the battery remaining charge detection operation | movement in the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 VTR apparatus 2a Primary battery 2b Secondary battery 3a Power supply determination terminal 3b Terminal 4a, 5a Power supply terminal 4b, 5b Terminal 6 Power supply part 7 Pull-up resistor 8 Power supply type detection signal line 9 Operation mode control microcomputer 10 Operation button 11 Display means (1)
12 switch 13 display means (2)
20 operation mode selection switch 21 A / D converter 22 power supply voltage detection signal line

Claims (2)

An apparatus for recording or reproducing an image,
A discriminating means for discriminating whether the mounted power source is a dry cell or a battery other than a dry cell;
When the power source is a dry cell, a first remaining amount detecting means for detecting the remaining amount of the dry cell;
Second remaining amount detecting means for detecting the remaining amount of the battery when the power source is a battery other than a dry cell;
Display means capable of displaying the remaining amount of power ;
Selection means for selecting one of a plurality of operation modes;
Control means for changing a control content related to the predetermined operation mode according to the type of power source determined by the determination means when a predetermined operation mode is selected from the plurality of operation modes by the selection means; With
The control means permits the transition to the predetermined operation mode when the power source determined by the determination means is a battery and also detects the remaining amount detected by the second remaining amount detection means on the display means. Display the quantity in the first display form ,
When the power source determined by the determination unit is a dry battery, if the result of the remaining amount detection by the first remaining amount detection unit is equal to or higher than the voltage at which the predetermined operation mode can be operated, the predetermined operation mode is entered . The transition is permitted, the remaining amount detected using the first remaining amount detecting unit is displayed on the display unit in a second display form different from the first display form, and the first remaining amount is displayed. If the result of the remaining amount detection by the detection means is less than the operable voltage in the predetermined operation mode, the transition to the predetermined operation mode is prohibited and the first and second displays are displayed on the display means. recording or reproducing apparatus, characterized in Rukoto is remaining displayed in different third display mode to the embodiment. Before Symbol display means, the power is displayed in a form obtained by converting the remaining amount as the first display form on the drivable time when the battery remaining amount as the second display mode when the power supply battery The recording or reproducing apparatus according to claim 1, wherein the display is displayed in a form corresponding to the voltage of the dry cell.

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