JP2551379Y2 - Electronic device with clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electronic device, and more particularly to an electronic device with a clock in which a control unit can be separated and connected to an electronic device body.

<Prior Art> In an electronic device such as a car stereo, a mounting case 10 is fixed to a vehicle side as shown in FIG. 4 to prevent theft, and an electronic device main body 20 is inserted into and removed from the mounting case 10. Arrange freely, and attach this to the mounting case 10 when you leave the car.
It is known that it can be taken out and carried.

<Problem to be solved by the invention> However, if the electronic device body is removed from the mounting case, power is not supplied, so even if the watch is attached to the electronic device, the watch will stop during removal. . For this reason, the time is greatly out of order, and it is necessary to reset the time each time it is removed, and it is not always practical to attach a clock. In addition, the electronic device body is quite large in size and weight, so that it cannot be carried in pockets of clothes or the like, so that the burden on the user is increased, which is very troublesome.

<Means for Solving the Problems> The present invention provides an electronic device main body having a first clock information control unit for controlling first clock information and having no display unit, and a second clock information for controlling second clock information. A control unit having a control unit, a power detection unit for detecting the presence or absence of power supply, and a display unit for displaying various display data; a bus line for transmitting and receiving various data between the device body and the control unit; A power supply line for supplying power to the unit, wherein the control unit is an electronic device that can be separated and connected to an electronic device body via the power supply line and the bus line, and the second clock information control unit is When the power supply line is connected, the second clock information is controlled independently of the first clock information control section so that the second clock information can be displayed on the display section. When the clock is disconnected and reconnected, the first clock information is received from the first clock information control unit via the bus line and the first clock information is received.
It is characterized in that the second clock information is adjusted based on the clock information and the time measurement is started.

<Operation> According to the present invention, the control unit having the display unit can be separated and connected to the electronic device body having no display unit via the power line and the bus line, and the second clock information control of the control unit is performed. The unit controls the second clock information independently of the first clock information control unit of the electronic device main body when the power line is connected, and enables the second clock information to be displayed on the display unit. When the power line is separated and connected again, the second clock information is controlled. 1
The clock information control unit receives the first clock information via the bus line, adjusts the second clock information based on the first clock information, and starts clocking.

<Embodiment> An electronic device with a clock according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of an electronic device with a clock according to the present invention. In the drawing, reference numeral 1 denotes a control unit which has a shape as shown in FIG. 3, is relatively small, and is mounted on a car dashboard or the like by using a mounting case (not shown), or It can be installed in a sun visor or the like of a car without using the device, and can be easily carried in a pocket or the like of clothes simply by separating a bus line and a power supply line from an electronic device body.

Next, each part of FIG. 3 will be described. In the figure, reference numeral 30 denotes a display unit for displaying various display data, 40 denotes an operation unit comprising a group of keys for controlling the main body of an electronic device such as PLAY, FWD, and BWD, and 50 denotes a preset memory for storing a radio reception frequency in advance. The key 60 is a time adjustment key, the display unit 30 corresponds to the display unit 1E in FIG. 1, and the various keys 40, 50, and 60 correspond to the operation unit.

The control unit 1 includes a second clock information control unit 1A that performs time control, and a power detection unit 1 that detects whether power is supplied.
B, a second control unit 1C including a RAM (not shown), an operation unit 1D including various operation keys, and a display unit 1E for displaying various display data.

Reference numeral 2 denotes a main body of an electronic apparatus as a CD changer with a radio, which is constituted as separate devices in which an audio circuit unit 3 and a disc reproducing device 4 are connected to each other via a bus line 5 or the like.

The audio circuit unit 3 includes a first clock information control unit 3B for performing time control, a RAM (not shown), and the like. The audio circuit unit 3 receives an operation command sent from the operation unit 1D via the bus line 5, and A first control unit 3A for controlling the respective units of the third unit 3 and transmitting time information controlled by the first clock information control unit 3B to the second control unit 1C as reference time information when the bus line 5 is connected; One of various audio sources controlled by an operation unit 1D and a power supply unit 3C that converts the output voltage of the power supply to a microcomputer drive voltage and supplies it to a second control unit 1C and a first control unit 3A via a power supply line 7 3D, audio switch 3E for switching various audio sources, mute circuit 3F for adding mute to audio signal, amplifier for amplifying audio signal
It is composed of 3G.

The disc reproducing device 4 is one of audio sources controlled by the operation unit 1D, a third control unit 4A for processing an operation command sent via the bus line 5, a magazine containing a plurality of discs. A disc reproducing section 4B for selecting a predetermined disc to reproduce an audio signal and sending the reproduced signal to the audio circuit section 3 as an audio signal.

Hereinafter, according to the processing flow chart of the present invention shown in FIG.
The operation of the embodiment shown in FIG.

Now, assuming that the controller 1 is separated from the electronic device main body 2 and thereafter connected via the bus line 5 and the power supply line 7, the power supply detection section 1B detects the presence or absence of power supply (step 100). When the power supply is detected, the second control unit 1C sends various information including reference time information to the first control unit 3A via the bus line 5, for example, data indicating the state of the device before the power line is separated (CD changer 4). Request the disk number, track number, tuner 3D reception frequency, etc. of the disk that was playing (step
101).

When receiving the command from the second control unit 1C (step 102), the first control unit 3A uses the time information controlled by the first clock information control unit 3B as reference time information, and together with other various information, a bus line. 5 to the second control section 1C (step 103).

2nd control part 1C which received various information including reference time information
(Step 104), when it is confirmed that all information has been received (Step 105), the second clock information control unit 1C adjusts the time based on the reference time information (Step 10).
6) Display the current time on the display 1F (Step 1)
07).

Thereafter, the control unit 1 starts counting the display clock signal independently. This is because transmission / reception of time data via the bus line 5 always has a large effect on other control information.

The power supply detecting section 1B always detects the presence or absence of power supply. If the power supply cannot be detected, that is, if it is confirmed that the power supply line has been separated (step 108), the second control section 1C starts. Waits for power line connection (step
109). Thereafter, when the power supply line is connected again, the operation from step 100 is repeated.

As described above, by providing the anti-theft electronic device with a clock function, the practicality is increased and the performance of the entire device is also improved.

<Effects of the Invention> As described above, according to the invention, the first clock information for controlling the first clock information is provided.
An electronic device main body having a clock information control unit and no display unit, a second clock information control unit for controlling second clock information, a power detection unit for detecting whether power is supplied, and a display for displaying various display data Unit, a bus line for transmitting and receiving various data between the device body and the control unit, and a power supply line for supplying power to the control unit, wherein the control unit includes a power supply line and the bus. An electronic device that can be separated and connected to an electronic device main body via a line, wherein the second clock information control unit is connected to the second clock information control unit independently of the first clock information control unit when the power supply line is connected. While controlling the clock information to enable display on the display unit,
When the power line is disconnected and reconnected, the first
The first clock information is received from the clock information control unit via the bus line, the second clock information is adjusted based on the first clock information, and the clock is started. Therefore, the clock is removed from the electronic device body to prevent theft. When the control unit is connected to the electronic device again, the time shifted during the removal period can be immediately corrected, and when the electronic device and the control unit are connected, time data is always transmitted and received via the bus line. Therefore, there is no effect on other control information on the bus line and there is no need to provide a communication line dedicated to time data.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electronic device with a clock showing one embodiment of the present invention, FIG. 2 is a flowchart showing a process flow of the present invention,
FIG. 3 is a perspective view of the controller according to the embodiment of the present invention, and FIG.
The figure is a perspective view showing a conventional electronic device with an anti-theft function. 1. Second control unit, 1A Second clock information control unit, 1B
Power detection unit, 2 electronic device body, 3 audio circuit unit, 3A first control unit, 3B first clock information control unit,
5 ... bus line, 7 ... power supply line.

Claims (1)

(57) [Scope of request for utility model registration] 1. An electronic device main body having a first clock information control unit for controlling first clock information and having no display unit, a second clock information control unit for controlling second clock information, and presence / absence of power supply. A control unit having a power supply detecting unit for detecting power and a display unit for displaying various display data, a bus line for transmitting and receiving various data between the device body and the control unit, and a power supply for supplying power to the control unit The control unit is an electronic device that can be separated and connected to an electronic device main body via a power supply line and the bus line, and the second clock information control unit is connected to the power supply line. Sometimes, the second clock information is controlled independently of the first clock information control unit so that it can be displayed on the display unit, and the power supply line is separated and reconnected. An electronic device that receives first clock information from the first clock information control unit via the bus line, adjusts second clock information based on the first clock information, and starts clocking. .