JP4508148B2 - Power supply unit for digital broadcast receiver - Google Patents

Description

  The present invention relates to a power supply apparatus, and more particularly to a power supply apparatus for incorporating a digital broadcast receiver having a power supply function for maintaining the standby state during standby by remote control or the like.

Conventionally, as a power supply device having a power supply function for maintaining a standby state, one described in Patent Document 1 is known. FIG. 2 shows a conventional power supply device described in Patent Document 1. In FIG. In FIG. 2, in the standby state, the DC power is shut off by turning off the switch 3 and the switch 14 to stop the power supply circuit 4 and the standby power supply 15, and the DC voltage from the storage battery 6 also operates in the standby mode through the switch 8. It is supplied to the circuit block 12 to be in an operating state. As a result, the circuit block 12 that operates even during standby by the DC voltage from the storage battery 6 is put into a standby state. Further, when the standby state continues for a long period of time, it is detected that the storage battery 6 is discharged to a voltage lower than a certain value set by the detection circuit 16 of the circuit block 12 that operates even during standby, and the switch 14 is turned on. Thus, the DC power is supplied to the standby power source 15 and further supplied to the storage battery 6 through the switch 5 for charging, and the circuit block 12 that operates even during standby can be maintained in the operating state by the DC power from the standby power source 15.
Japanese Patent Laid-Open No. 11-252822 (page 5, FIG. 2)

  However, in the above-described conventional configuration, when the storage battery 6 that supplies power to the standby circuit in order to maintain the remote control standby state for a long period of time becomes lower than the set voltage, the circuit that operates even during standby from the standby power supply 15. In order to supply electric power to the block 12 and charge the storage battery 6, the standby power supply 15, the voltage detection means 16 of the storage battery 6, and the like are necessary, and the circuit is complicated.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a power supply apparatus that does not require a standby power supply, a storage battery voltage detection means, or the like.

  In order to achieve this object, a power supply apparatus according to the present invention includes a first switch means that supplies or cuts off power for operating or stopping as a digital broadcast receiver by a remote control signal, and through the first switch means. A digital power supply circuit that supplies power at the voltage required by each circuit block of the digital broadcast receiver when power is supplied, and a digital broadcast that performs operations such as outputting video, audio, data, etc. in accordance with the ARIB standard The receiving circuit and second switch means that conducts to charge the storage battery when power is supplied to the power supply circuit and shuts off when power is not supplied to the power supply circuit, and also operates during standby A third switch means for switching whether the circuit block is supplied with power from the power supply circuit or the storage battery; and the remote control The first control means, the second switch means, and the third switch means, or by communication with the digital broadcast receiving circuit. A standby control microcomputer for determining how many hours should be started for SI accumulation by using a timer circuit and controlling the first switch means, the second switch means, and the third switch means; The digital broadcast receiver uses the fact that it is activated at the time of SI accumulation in the night according to the ARIB standard, and stores the standby power for one day until the SI accumulation time of the next day during the activation time. It has the structure provided with the storage battery.

  With this configuration, it is possible to obtain a power supply apparatus that does not require standby power supply, storage battery voltage detection means, or the like.

  As described above, the present invention provides an excellent effect of obtaining a power supply device that does not require a standby power supply, a storage battery voltage detection means, or the like.

  According to a first aspect of the present invention, there is provided a first switch means for supplying or cutting off power for operating or stopping as a digital broadcast receiver by means of a remote control signal, and power is supplied through the first switch means. A power supply circuit that supplies power of a voltage required by each circuit block of the digital broadcast receiver when supplied, and a digital broadcast receiver circuit that performs operations such as outputting video, audio, data, etc. in accordance with the ARIB standard And a second switch means that conducts to charge the storage battery when power is supplied to the power supply circuit and shuts off when power is not supplied to the power supply circuit, and a circuit block that operates even during standby Receives the remote control signal and third switch means for switching whether the power is supplied from the power supply circuit or the storage battery. For analyzing the remote control signal and controlling the first switch means, the second switch means, the third switch means, or for storing SI by communicating with the digital broadcast receiving circuit A timer circuit for determining the number of hours after which the system should be started, and a standby control microcomputer for controlling the first switch means, the second switch means, and the third switch means, and digital broadcast reception Utilizing the fact that the machine is activated at the time of SI accumulation in the night according to the ARIB standard, the storage battery stores the standby power for one day until the SI accumulation time of the next day during the activation time. This has the effect that a power supply device that does not require a standby power supply, a means for detecting the voltage of the storage battery, or the like can be obtained.

  Hereinafter, an embodiment of the present invention will be described with reference to FIG.

(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of a power supply apparatus according to Embodiment 1 of the present invention. In FIG. In FIG. 1, 1 is a 50 Hz or 60 Hz AC100V commercial power supply in Japan, 2 is a rectifier circuit in a digital broadcast receiver, 3 is a first switch means for supplying or cutting off power to a power supply circuit 4 to be described later, 4 is a power supply circuit that supplies power of various voltages required by each circuit block of the digital broadcast receiver, and 5 is conductive to charge a storage battery 6 to be described later when power is supplied to the power supply circuit 4. Second switch means for shutting off power when the circuit 4 is not supplied with power, 6 is a storage battery capable of storing standby power for one day even at the end of expected life of the digital broadcast receiver, and 7 is ARIB A digital broadcast receiving circuit that performs operations such as outputting video, audio, data, etc. in accordance with the standard, 12 is a circuit block that operates even during standby, 8 is a circuit block 12 that is Third switch means for switching whether the power is supplied from the circuit 4 or the storage battery 6, 9 is a timer circuit for measuring the elapsed time, and 11 is a means for receiving a remote control signal. In the case of a remote control), the remote control light receiving unit 10 analyzes the remote control signal and controls the first switch means 3, the second switch means 5, the third switch means 8, or receives a digital broadcast. The timer circuit 9 is used to determine how many hours later it should start for SI accumulation by communication with the circuit 7, and the first switch means 3, the second switch means 5, and the third switch means 8 are controlled. The standby control microcomputer 13 is a fourth switch means.

  The operation of the digital broadcast receiver built-in power supply device configured as described above will be described. First, during standby, the timer circuit 9 in the circuit block 12, which operates even during standby, the standby control microcomputer 10, and the remote control light receiving unit 11 are operated by the storage battery 6, and the first switch means 3, The second switch means 5 is in the cut-off state, and the third switch means 8 is conductive on the storage battery side. When a remote control signal is received in this state, the signal photoelectrically converted by the remote control light receiving unit 11 is transmitted to the standby control microcomputer 10 and analyzed, and if it is a signal indicating an operating state, the first switch means. 3. The second switch means 5 is turned on, the third switch means 8 is controlled so that the power supply circuit 4 side is turned on, and the digital broadcast receiving circuit 7 performs video, audio, data, etc. in accordance with the ARIB standard. Output. The digital broadcast receiving circuit 7 receives information on how many hours later the next SI accumulation is during reception of the digital broadcast, and the information is transmitted to the standby control microcomputer 10. Since SI accumulation is performed in the middle of the night, the digital broadcasting receiver is normally in a standby state, the first switch means 3 and the second switch means 5 are cut off, and the third switch means 8 is electrically connected to the storage battery 6 side. . The standby control microcomputer 10 uses the timer circuit 9 to measure how many hours it will be in the operating state, and when it is time to set the operating state for SI accumulation, the standby control microcomputer 10 The first switch means 3 and the second switch means 5 are in a conductive state, and the third switch means 8 is controlled so that the power supply circuit 4 side is in a conductive state. Accordingly, during SI accumulation, the second switch means 5 for charging the storage battery 6 becomes conductive, so that the storage battery 6 is charged. This storage battery 6 is designed to store power for one day of standby until SI accumulation on the next day even at the expected end of life, The standby state can be maintained by charging at the time of accumulation. In addition, when the operating state is set other than during SI accumulation, the battery is charged during accumulation, so that it may be in the operating state during SI accumulation.

  In the above description, the storage battery 6 is in a charged state. However, when the storage battery 6 is discharged from the commercial power supply 1 for a long time and the storage battery 6 is discharged, the first switch means 3 cannot be turned on. The power supply circuit 4 can be operated by turning on the four switch means 13.

  As described above, according to the first embodiment, during the midnight SI accumulation period, by providing a storage battery that stores power for one day until SI accumulation for the next day, A power supply device that does not require voltage detection means or the like can be provided.

  In the above description, the first switch means 3 for supplying or cutting off power to the power supply circuit 4 is located after the rectifier circuit 2, but in the present invention, no standby power supply is required other than the main power supply circuit 4. It may be located between the commercial power source 1 and the rectifier circuit 2, and in this case, the standby power consumption supplied from the commercial power source 1 is 0W.

  In the above description, although described as a digital broadcast receiver, a digital broadcast receiving television receiver including a display device such as a cathode ray tube, a liquid crystal display, a plasma display, a hard disk storage device, a DVD ( A digital broadcast receiving recorder incorporating a digital versatile disk) recording device, a video tape recording device, or the like may be used.

  The power supply apparatus for incorporating a digital broadcast receiver according to the present invention is useful as a power supply apparatus for a digital broadcast receiver because a power supply apparatus that does not require a standby power supply, a means for detecting the voltage of a storage battery, or the like is obtained.

The block diagram which shows the structure of the power supply device for digital broadcast receivers incorporating in Embodiment 1 of this invention Block diagram showing the configuration of a conventional power supply device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Commercial power supply 2 Rectifier circuit 3 1st switch means 4 Power supply circuit 5 2nd switch means 6 Storage battery 7 Digital broadcast receiving circuit 8 3rd switch means 9 Timer circuit 10 Microcomputer for standby control 11 Remote control light-receiving part 12 Standby Circuit block that operates sometimes 13 Fourth switch means

Claims (2)

In a power supply device built into a digital broadcast receiver,
A power supply circuit for supplying power necessary for the digital broadcast receiver;
First switch means for turning ON / OFF the power supply to the power supply circuit;
A storage battery for storing power required during standby of the digital broadcast receiver by the next SI storage period during the SI storage period;
Second switch means for turning ON / OFF the power supply from the power supply circuit to the storage battery;
Third switch means for switching whether power is supplied from the power supply circuit or the storage battery to the standby control unit;
A standby controller for controlling the first switch means, the second switch means and the third switch means;
With
The standby control unit
When the digital broadcast receiver is on standby, the first switch means and the second switch means are turned off, and the third switch means is switched so that power is supplied from the storage battery to the standby control unit. ,
At the time of the SI accumulation, the first switch means and the second switch means are turned on, and the third switch means is switched so that power is supplied from the power supply circuit to the standby control unit. A digital broadcast receiver built-in power supply device. The standby control unit
When the remote control signal is received, the first switch means and the second switch means are turned on, and the third switch means is switched so that power is supplied from the power supply circuit to the standby control unit. 2. The power supply apparatus for incorporating a digital broadcast receiver according to claim 1.

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