JPS61218327A - Battery pack - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a video tape recorder (VT
The present invention relates to a battery pack suitable for use in R).

[Technical background of the invention]

FIG. 3 is a block diagram showing an example of a conventional battery pack of this type. Battery pack 1 is dedicated for camera photography V
When attached to TR2, a connection relationship as shown in this figure occurs. That is, from the battery pack 1, the power line 3.4
10B power is supplied to the VTR2. Also, a charge completion sensor (temperature sensor, etc.) 5 built into this battery pack 1 detects a temperature rise of the battery (Tstelcadmium battery) when charging is completed, and sends this to the signal line 6 as a battery charge completion signal. It is output to the VTR2 via the

[Problems with background technology]

Therefore, conventionally, this type of battery pack 1 only had the function of transmitting a charge completion signal to the VTR 2 only when it was charged and became usable. Therefore, when using battery pack 1, you cannot check whether battery pack 1 is charged or not until you attach battery pack 1 to VTR 2 and actually supply power to it.You cannot know this in advance. The drawback was that it was not possible. In addition, the current situation is that it is not known at all how many times the battery pack 1 has been charged and discharged, which has the disadvantage that the battery pack 1 cannot be used at a critical time and a photo opportunity is missed. was there.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, an object of the present invention is to provide a battery pack that can display the usage time from the time of completion of charging and the number of times of charging.

[Summary of the invention]

The present invention provides a battery pack that can be detachably attached to a videotape recorder exclusively used for camera photography to supply power and detect battery status such as usage time and number of charging times after battery charging is completed. a detection means for storing battery information; a display means for displaying battery information; and a display means for controlling the above-mentioned means by a recording start/stop signal of the video tape recorder to display the usage time on the display means. The above object is achieved by comprising a control means for clearing the use time detection and storage system by a battery charge completion signal, and controlling the above means to display the number of uses on the display means. The goal is to achieve the following.

[Embodiments of the invention]

An embodiment N of the present invention will be described below with reference to the drawings. 1st
In the figure, a battery pack 1 includes a control section 11 and a display section 12.
, a serial-to-parallel converter 13, and a battery 14 (Kickel cadmium battery). The battery pack l has a built-in temperature sensor 15. The battery 14 also has a backup capacitor 1 when the power is turned on.
6 are connected in parallel.

The control unit 11 includes a microprocessor, timer, memory, etc. (not shown). This control unit 11 receives a recording start signal and a recording stop signal (including a recording-3 pause signal)'f of the VTR 2 outputted from a serial-parallel converter 13 at a start/stop terminal S, and a temperature sensor 15 outputs them. A charging completion detection signal is received at the count terminal C, and the charging completion detection signal outputted from this temperature sensor 15 is buffered 17'f:.

The signal is input to the reset terminal R of the control unit 11 via the signal.

The display section 12 obtains display information from the control section 11 and displays it. The battery 14 supplies power VCC to the control section 11, the serial/parallel converter 3, and the display section 12.

The VTR 2 outputs recording and recording stop signals as serial information to the serial/parallel converter 13 via a signal a7, and also outputs a serial/parallel converter 13 operating signal via the signal line 8. Further, the battery 14 supplies a +Bfi source to the VTR 2 via the power line 3.4+, and sends a charge completion signal detected by the temperature sensor 15 to the VTR 2 via the signal line 6.

Next, the operation of this embodiment will be explained. When the battery pack 1 is attached to the VTR 2, preparations are made to supply power from the battery 14 to the VTR 2. When the VTR 2 is placed in a recording state, a recording start signal is input to the serial-parallel converter 13 via the signal line 7. Serial parallel converter 1
3 converts the clock into a parallel signal based on the clock supplied from TllI2 via the signal line 8 and outputs it to the start/stop terminal S of the control section 11. When the microprocessor of the control unit 11 receives this parallel recording start signal, it starts a timer and starts measuring time. Furthermore,
The microprocessor once adds and stores the timer's time count Th in the memory, and then outputs it to the display section 12.

The display unit 12 displays the usage time of the battery 14 based on the clock information sent from the control unit 11. When the VTR 2 stops recording, a recording stop signal is sent to the serial/parallel converter 13 as serial information via the signal line 7.
is output to. The serial-parallel converter 13 converts this signal from the VTR 2 to the signal line 8? It converts it into a parallel signal according to the clock sent through the parallel signal, and outputs it to the start/stop terminal S of the control section 11. When the microprocessor of the control unit 11 receives the parallel recording stop signal,
Stop the timer operation. Therefore, the display unit 12 continues to display the usage time of the battery 14 up to the time when the timer is stopped. Thereafter, when the recording operation of ①T'fL2 is started, the microprocessor of the control section 11 operates the timer again to measure the usage time of the battery 14. At this time, the time count of the timer is added to the previous time count stored in the memory and stored in this memory, and the result of this addition is displayed on the display section 12.
is output to. Therefore, the cumulative usage time of the battery 14 is displayed on the display section 12. Thereafter, the cumulative usage time of the battery 14 is displayed on the display section 12 by repeating the above operation. Battery 14 displayed on this display section 12
The operating time of , since the display section 12 and the control section 11 are powered by the battery 14, the VTR 2 is powered by the battery, -(
It continues to be displayed even after pulling out Tsuku 1.

Next, when the battery 14 is charged and the charging is about to be completed, the temperature will rise if a nickel cadmium battery is used as the battery 14, so the temperature sensor 15 detects this and sends a battery charging completion signal to the controller. It is output to count terminal C and reset terminal R of 11. When a signal is input to the count terminal C, the microprocessor of the control unit 11 adds and stores +1″f in the memory, and outputs this added value (count value) to the display unit 12.Display unit 1
2 displays the count value (the number of times the battery 14 has been charged) received from the control unit 11. Further, when a reset signal is input to the reset terminal hole, the microprocessor of the control unit 110 clears the timer and also clears the memory area in which the time count was stored. Therefore, the usage time display of the battery 14 on the display section 12 is also cleared, and the display returns to zero time.

FIG. 2(A) is a flow chart of the operation of the microprocessor of the control section 110 during recording. When a recording start signal from the VTR 2 is received in step 101, step 102
The timer is started at , and the time count value is written to the memory and added. In step 103, the contents of the memory are read out periodically and the usage time of the battery 14 is displayed on the display section 12. Further, when a recording stop signal from the VTR 2 is received in step 104, the operation of the timer is stopped in step 105, and the operation of writing the time count value into the memory is completely stopped. In step 106, the final addition count value written in the memory is displayed on the display unit 12, and the process is ended.

FIG. 2(B) is a flow chart of the operation of the microprocessor of the control unit 110 during charging. In step 201, charging of the battery 14 for 1 km is started. In step 202, it is determined whether the battery is being used, and if the battery is not being used, the process proceeds to step 203. Step 203
At the terminal C, a charge completion signal from the temperature sensor 15 is received, and at the same time, a reset signal is received from the terminal R. In step 204, +1 is added and written to the memory for each charge completion signal. At the same time, the timer operation is cleared by a reset signal, and the memory's clock count is added to clear the write area. Step 205
Then, the charging completion signal count value (same as the number of charging times) written in the memory is displayed on the display unit 12, and the process is ended. If the use of the battery is started during charging in step 202, the process can go to step 205 and display on the display unit 12 that the battery has been used during charging.

According to the present embodiment, it is possible to display on the battery pack 1 the usage time from the time when the battery 14 has been charged and the number of times the battery 14 has been charged. Therefore, the user can operate the VTR 2' while keeping track of the usage status of the battery 14 at all times, so there is no need to worry about missing a photo opportunity. Incidentally, since the power supplied from the battery 14 to the control section 11, display section 12, and serial-parallel converter 13 is very small, the above-mentioned various ports operate sufficiently even when the battery 14 is shut off by the backup capacitor 16 or the like. In addition, all other information such as charging status can be easily displayed on the display unit 12, and the information accumulated in the memory of the rC1 control side 1 section 1 can be sent to the VTRz side.
It is also possible to easily display these information @ on the display section on the second side.

〔Effect of the invention〕

As described above, according to the battery pack of the present invention, by incorporating the control unit 1IL 11 and the display unit, it is possible to display the usage time of the battery from the time of completion of charging and the number of times the battery has been charged.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the battery pack of the present invention, FIG. 2 is an operational frame diagram of the microprocessor of the control section shown in FIG. 1, and FIG. 3 is an example of a conventional battery pack. FIG. 1...Battery pack 2...Video tape reader 11...Control unit 12...Display unit 13...Serial to parallel converter 14...Battery 15...Temperature sensor agent Patent attorney Kensuke Noriyuki (and 1 other person)

Claims (1)

[Claims] In a rechargeable battery pack that supplies power by being removably attached to a video tape recorder dedicated to camera photography, a detection means for detecting battery information such as usage time and number of times of charging from the time the battery is fully charged, and battery information. a storage means for storing battery information; a display means for displaying battery information; and a display means for controlling the various means according to a recording start/stop signal of the video tape recorder to display the usage time on the display means, and a battery charging completion signal. A battery pack characterized by comprising: control means for clearing the usage time detection and storage system, and controlling the various means to display the number of usages on the display means.