JP2007013437A - Video display device and power source supply method to its recording/reproduction part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain energy saving by turning off a power source in a recording/reproduction device to which access is not made for a fixed time. <P>SOLUTION: This video display device is provided with: a signal processing part 34 for outputting a demodulated processing signal; connection parts 38 and 40 to which a plurality of recording/reproduction devices can be connected in series, and to which the processing signal is derived; a device status management part 35b for setting the OFF of power source supply to a recording/reproduction device 20 when any access has not been performed to the recording/reproduction device 20 connected to the connection parts within a prescribed time; and a power source supply management part 35a for turning on or off a power source to be supplied to the recording/reproduction device 20 according to the setting of the device status management part 35b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a video recording / reproducing apparatus and a method for supplying power to the recording / reproducing unit, and is effective, for example, in an apparatus and method equipped with a power saving function for energy saving measures.

  In recent years, the storage capacity of information recording media such as hard disks and optical discs as recording media has increased. For this purpose, there is a method and apparatus for automatically recording a desired program on a recording medium by incorporating or connecting a recording / reproducing apparatus using these media into, for example, a television receiver. Of course, a dedicated recording / reproducing apparatus for recording a program or the like with a built-in tuner and a hard disk drive (HDD) has been developed. When a dedicated recording / reproducing apparatus is used, the display of the television receiver is used as a monitor.

  Recently, an i.Link connection method using the IEEE 1394 standard has been developed as a connection method. According to this connection method, for example, recording / reproducing apparatuses can be connected in series, and each recording / reproducing apparatus can be controlled independently in a serial connection state.

On the other hand, in recent years, there has been a social demand for energy saving measures. In response to this, an apparatus that can save power in an apparatus including a hard disk device has been developed (for example, Patent Document 1). This apparatus is a broadcast receiving apparatus with a built-in hard disk device. When the hard disk device is not used, the power supply is stopped or the rotation of the hard disk is reduced to save energy.
JP 2003-224799 A

  Conventionally, when a plurality of recording / reproducing apparatuses are connected in series, no countermeasure is taken for power management.

  Therefore, in one embodiment of the present invention, there is provided a video display apparatus that can turn off the power and save energy for a recording / reproducing apparatus that has not been accessed for a certain period of time, and a method for supplying power to the recording / reproducing unit. For the purpose. According to another embodiment of the present invention, when a plurality of recording / reproducing devices are connected in series, a video display device capable of performing power supply management according to the operation setting status of each recording / reproducing device and its recording / reproducing unit It is an object to provide a method for supplying power to a computer.

  In one embodiment of the present invention, a signal processing unit that outputs a processing signal, a connection unit that can connect a plurality of recording / reproduction devices in series, and a power supply that supplies the recording / reproduction device connected to the connection unit are turned on. Alternatively, when there is no access within a predetermined time to the power supply management unit that manages off and the recording / reproduction device connected to the connection unit, the power supply management unit is controlled to control the recording / reproduction device. And a recording / reproducing apparatus state management unit for turning off the power supply to the.

  By providing the power supply management unit and the recording / reproduction device state management unit for the connection unit capable of connecting a plurality of recording / reproduction devices in series by the above means, there are a plurality of devices connected in series. However, safe energy-saving measures can be taken.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, an outline of a broadcast receiving apparatus to which the present invention is applied will be described.

  FIG. 1 shows the appearance of the front side of a television broadcast receiver 11 described in this embodiment. That is, the television broadcast receiving apparatus 11 is mainly composed of a thin cabinet 12 formed in a substantially square shape as a main body of the apparatus, and a stand 13 for standing and supporting the cabinet 12.

  A display screen 14a of a video display 14 formed of, for example, a flat liquid crystal display panel is exposed on the front side of the cabinet 12, and a pair of speakers 15, an operation unit 16, and a remote controller described later (in FIG. 1). A light receiving unit 18 for receiving operation information transmitted from a not-shown 17 is disposed.

  The stand 13 is formed in a substantially thin box shape, and the bottom plate 13a, which is one of the flat surfaces, is placed on a predetermined base (not shown) installed horizontally. It is configured. The stand 13 is connected to a back surface of the cabinet 12 by a support member 19 projecting upward from a substantially central portion of the upper surface plate 13b which is a surface opposite to the surface placed on the base. Thus, the cabinet 12 is supported in an upright state.

  Here, the stand 13 can accommodate an HDD unit (not shown in FIG. 1) 20 to be described later. On the upper surface plate 13b of the stand 13, a plurality of pressable operations (not shown) for controlling the HDD unit 20 to be recorded, reproduced, stopped, etc., are projected to the front side of the cabinet 12. In this case, four operation elements 21 are arranged.

  FIG. 2 schematically shows a signal processing system 12a of the television broadcast receiving apparatus 11. Various circuit blocks constituting the signal processing system 12a are mainly disposed in the cabinet 12 at a position close to the back surface, that is, around the back side of the display screen 14a of the video display 14.

  The digital television broadcast signal received by the digital television broadcast receiving antenna 22 is supplied to the tuner unit 24 via the input terminal 23. The tuner unit 24 selects and demodulates a signal of a desired channel from the input digital television broadcast signal. Then, the signal output from the tuner unit 24 is supplied to the decoder unit 25 and, for example, subjected to MPEG (moving picture experts group) 2 decoding processing, and then supplied to the selector 26.

  Further, the analog television broadcast signal received by the analog television broadcast receiving antenna 27 is supplied to the tuner unit 29 via the input terminal 28. The tuner unit 29 selects and demodulates a signal of a desired channel from the input analog television broadcast signal. The signal output from the tuner unit 29 is digitized by an A / D (analog / digital) conversion unit 30 and then output to the selector 26.

  The analog video and audio signals supplied to the analog signal input terminal 31 are supplied to the A / D converter 32 and digitized, and then output to the selector 26. Further, the digital video and audio signals supplied to the digital signal input terminal 33 are supplied to the selector 26 as they are.

  The selector 26 selects one of the four types of input digital video and audio signals and supplies it to the signal processing unit 34. The signal processing unit 34 performs predetermined signal processing on the input digital video signal and provides it for video display on the video display 14. As the video display unit 14, for example, a flat panel display such as a liquid crystal display or a plasma display is adopted. The signal processing unit 34 performs predetermined signal processing on the input digital audio signal, converts the signal into an analog signal, and outputs the analog signal to the speaker 15 for audio reproduction.

  Here, in the television broadcast receiving apparatus 11, various operations including the various receiving operations described above are comprehensively controlled by the control unit 35. The control unit 35 is a microprocessor with a built-in CPU (central processing unit) or the like, and receives operation information from the operation unit 16 or operation information transmitted from the remote controller 17 via the light receiving unit 18. By being taken, each part is controlled so that the operation content is reflected.

  In this case, the control unit 35 uses a static semiconductor memory unit 36. The memory unit 36 mainly includes a ROM (read only memory) storing a control program executed by the CPU, a RAM (random access memory) for providing a work area to the CPU, various setting information and control. And a nonvolatile memory in which information and the like are stored. The memory unit 36 may include any type of semiconductor memory such as SRAM or DRAM.

  Here, the control unit 35 is connected to the HDD unit 20 including a hard disk which is a dynamic recording medium accommodated in the stand 13. In this case, a line 37 for supplying power from the control unit 35 to the HDD unit 20 connects the control unit 26 and the HDD unit 20 via the connection unit 38. A control data line is also provided but omitted here.

  A line 39 for exchanging digital video and audio signals between the control unit 35 and the HDD unit 20 includes i. The control unit 35 and the HDD unit 20 are connected via the Link connection unit 40. That is, the transmission of the digital video and audio signals between the control unit 35 and the HDD unit 20 is performed separately from the power supply and the control signal i. Done by Link.

  The control unit 35 includes a power supply management unit 53a and a recording / reproducing device state management unit 53b, which are characteristic of the apparatus. These functions and operations will be further described later.

  The television broadcast receiver 11 can record the digital video and audio signals selected by the selector 26 with the HDD unit 20 and can also record the digital video and audio signals recorded on the HDD unit 20. It can be played and viewed.

  In FIG. 3, the characteristic part of said apparatus is taken out and shown. The signal processing system 12a includes the control unit 35 as described above, and further includes a power supply management unit 53a and a recording / reproducing apparatus state management unit 53b. The HDD unit 20 is connected to the i. Link connection is assumed. i. In the Link connection, a plurality of recording / reproducing devices can be connected in series. The power supply line is also connected in a series of a plurality of recording / reproducing devices. In FIG. 3, one recording / reproducing apparatus (HDD unit 20) is shown as a representative.

  In order to manage the recording / reproducing apparatus connected to such a connection terminal, in this apparatus, by providing the power supply management unit 35a and the recording / reproducing apparatus state management unit 35b, a plurality of devices connected in series are provided. Even if it exists, safe energy-saving measures are possible.

  FIG. 4 is a flowchart shown for explaining an example of operations and functions characteristic of the apparatus. When the television broadcast receiver 11 is turned on, the built-in HDD unit 20 is also turned on (steps SA1 and SA2). The power supply of the HDD unit 20 is maintained within a certain time (loop of steps SA3 and SA4).

  However, if there is no access to the HDD unit 20 within a certain time, the power of the HDD unit 20 is turned off (step SA5).

  If there is an access when the HDD unit 20 is in the off state (step SA6), the process of step SA2, that is, the power supply to the HDD unit 20 is executed. If there is no access in step SA6, the HDD unit 20 is kept powered off. When the main power of the television broadcast receiving apparatus is turned off, the process ends. However, when the auxiliary power is turned on and in the sleep state, the monitoring state in step SA6 is continued.

  FIG. 5 further shows an embodiment of the present invention. In this example, a state where a digital versatile disk (DVD) recording / reproducing apparatus 20a is additionally connected as a recording / reproducing apparatus is shown. Video and audio information is transmitted via the i.Link connection line. Further, the power on / off of each connected device is controlled via the power supply line and the control signal line. Here, it should be noted that if the power of the HDD unit 20 is controlled to be off, even if the power of the DVD recording / reproducing apparatus 20a is turned on, i. There is a problem that video and audio information cannot reach the DVD recording / reproducing apparatus 20a via the Link connection line.

  Therefore, in this apparatus, the recording / reproducing apparatus state management unit 35b always manages the states of the recording / reproducing apparatuses 20 and 20a. For example, when the recording / reproducing device 20a is accessed within a predetermined time, the power supply is maintained to both the recording / reproducing devices 20, 20a even if the recording / reproducing device 20 is not accessed for a predetermined time or longer. A recording reservation status management unit 35b1 is provided. The recording reservation status management unit 35b1 can determine the device to which power is supplied with reference to the recording reservation information of the recording / reproducing devices 20 and 20a. That is, if the recording / reproducing apparatus 20a is reserved for recording, the power supply is maintained for both recording / reproducing apparatuses 20, 20a even if the recording / reproducing apparatus 20 is not reserved for recording.

  Alternatively, if the recording / reproducing apparatus 20a approaches the time when the recording / reproducing apparatus 20a is reserved and the power is supplied to the recording / reproducing apparatus 20a, both the recording / reproducing apparatuses 20, Power supply is maintained for 20a.

  In this specification, the explanation about the on / off of the power source relates to the main power source. As for the recording / reproducing apparatuses 20 and 20a, regarding the power supply, it is assumed that the standby power supply is always on and a response to the control data is always possible.

  FIG. 6 specifically shows a state in which the above-described DVD recording apparatus 20a is connected through i.Link. The other blocks are the same as those described with reference to FIG.

  FIG. 7 shows still another embodiment of the present invention. A state is shown in which more recording / reproducing devices 20, 20a-20n are connected to the i.Link terminal. Even in this case, the energy saving function works in the apparatus of the present invention. Each of the recording / reproducing apparatuses 20 and 20a to 20n cannot transmit control data and video / audio information to a subsequent apparatus unless the main power supply is turned on. However, it is not preferable that the power supplies of all the recording / reproducing devices 20 and 20a to 20n are always turned on because the power consumption increases.

  Therefore, in this apparatus, for example, an operation as shown in FIG. That is, as shown in FIG. 8, when the power of the digital television broadcast receiving apparatus 11 is turned on (step SB1), the recording / reproducing apparatus status management unit 35b causes the recording reservation status of each recording / reproducing apparatus 20, 20a-20n. (Step SB3) or whether access has been made (Step SB4) is checked. For example, the recording reservation status can be checked by checking the recording reservation table stored in the memory unit 36 (step SB2).

  If no recording reservation has been made for any of the devices, or if the recording time is not approaching within a predetermined time, the process proceeds to step SB5. In step SB5, it is determined whether or not a predetermined time has elapsed (for example, 15 minutes or 1 hour) from the end of access to any of the devices. If the predetermined time has elapsed, the power of each device is turned off and the process returns to step SB2. If it is determined in step SB5 that the predetermined time has not elapsed, the process returns to step SB3.

  In step SB3, if there is a device for which recording reservation is made, or if the recording time of the device for which recording reservation has been made approaches within a predetermined time, the process proceeds to step SB7. If there is any one of the devices 20 and 20a-20n that has been accessed, the process proceeds to step SB7.

  Here, in step B7, it is checked what number of devices that are reserved for recording or accessed are connected from the connection terminal. Information on the connection order of devices can also be obtained by checking the device management table in the memory unit 36. When a new device (device) is connected through i.Link, the control unit 35 can perform authentication, for example, and manage the device type, device number, ID, and the like.

  In step SB7, when the device reserved for recording or the device accessed is found, the connection order of the device is determined.

  For example, when the identified device is connected to the first stage (step SB8), the power source of the first stage device is turned on via the control data line (step SB10). Assume that the device found in step SB7 is not the first stage but the Xth device. In this case, all the power supplies of the Xth device and the device in front of the device are turned on.

  As a result, it is possible to reduce the power consumption by turning on only the power of the devices that are originally necessary, and it is possible to stably manage the i.Link connection device.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

1, showing an embodiment of the present invention, is an external view for explaining a television broadcast receiving apparatus. FIG. It is a block block diagram shown in order to demonstrate the signal processing system of the television broadcast receiver in the same embodiment. It is explanatory drawing which shows the basic composition in one embodiment of this invention. FIG. 4 is a flowchart shown for explaining an operation example of the configuration shown in FIG. 3. FIG. It is explanatory drawing which shows the structure in other embodiment of this invention. FIG. 6 is a block configuration diagram more specifically showing the configuration shown in FIG. 5. It is explanatory drawing which shows the structure in further another embodiment of this invention. It is the flowchart shown in order to demonstrate the operation example of the structure shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Television broadcast receiver, 12 ... Cabinet, 13 ... Stand, 14 ... Video display, 15 ... Speaker, 16 ... Operation part, 17 ... Remote controller, 18 ... Light-receiving part, 19 ... Support member, 20 ... HDD unit , 21 ... operator, 22 ... antenna, 23 ... input terminal, 24 ... tuner section, 25 ... decoder section, 26 ... selector, 27 ... antenna, 28 ... input terminal, 29 ... tuner section, 30 ... A / D conversion section , 31 ... input terminal, 32 ... A / D conversion unit, 33 ... input terminal, 34 ... signal processing unit, 35 ... control unit, 36 ... memory unit, 37 ... line, 38 ... connection unit, 39 ... line, 40 ... i. Link connection.

Claims (8)

A signal processing unit for outputting the demodulated processing signal;
A plurality of recording / reproducing devices can be connected in series, and a connection part through which the processing signal is guided,
When there is no access within a predetermined time with respect to the recording / reproducing device connected to the connection unit, a device state management unit that sets power supply off to the recording / reproducing device;
A power supply management unit that manages on / off of power to be supplied to the recording / reproducing device according to the setting of the device state management unit;
A video display device characterized by comprising: A first recording / reproducing apparatus connected to the connection unit;
A second recording / reproducing apparatus connected to the connection unit via the first recording / reproducing apparatus;
A recording reservation status management unit that determines a device to supply power with reference to the recording reservation information of the first and second recording / reproducing devices;
The video display device according to claim 1, further comprising: A recording reservation status management unit that determines a device to supply power with reference to recording reservation information of the first and second recording / reproducing devices sequentially connected to the connection unit;
In response to the determination output of the recording reservation status management unit, the power supply management unit turns on the power of the first and second recording / reproducing devices when the second recording / reproducing device is reserved for recording. The video display device according to claim 1, wherein: A recording reservation status management unit that determines a device to which power is supplied with reference to the recording reservation information of the first and second recording / reproducing devices sequentially connected to the connection unit;
In response to the determination output of the recording reservation status management unit, the power supply management unit performs the first recording when the first recording / reproducing device is reserved for recording and the second recording / reproducing device is not reserved for recording. 3. The video display device according to claim 2, wherein the power source of the first recording / reproducing device is turned on and the power source of the second recording / reproducing device is turned off. A signal processing unit for outputting the demodulated processing signal;
A plurality of recording / reproducing devices can be connected in series, and a connection part through which the processing signal is guided,
First and second recording / reproducing devices sequentially connected to the connection unit;
A power supply management unit for managing on / off of power supplied to the first and second recording / reproducing devices connected to the connection unit;
When neither of the first and second recording / reproducing devices is accessed within a predetermined time, the power supply to the first and second recording / reproducing devices is turned off, and the second recording / reproducing device is set. A device state management unit that sets power supply on to both the first and second recording / reproducing devices when the device is accessed within the predetermined time;
A video display device comprising: a power supply management unit that manages power supply of each device according to the setting of the device state management unit. The device state management unit
The recording reservation status of the first and second recording / reproducing devices is determined, and when the second recording / reproducing device is in the recording reservation state, power is supplied to both the first and second recording / reproducing devices. The video display device according to claim 5, wherein ON is set. A signal processing unit that outputs a demodulated processed signal, a plurality of recording / reproducing devices can be connected in series, a connection unit that guides the processed signal, and first and second recording / reproducing units that are sequentially connected to the connecting unit A control unit that controls the apparatus and the operation,
When neither of the first and second recording / reproducing devices is accessed within a predetermined time, the power supply to the first and second recording / reproducing devices is turned off,
When the second recording / reproducing apparatus is accessed within the predetermined time, the power supply is turned on to both the first and second recording / reproducing apparatuses;
A method for supplying power to the recording / playback unit. The control unit further determines a recording reservation status of the first and second recording / reproducing devices,
The recording / playback unit according to claim 7, wherein when the second recording / reproducing device is in a recording reservation state, power supply is turned on to both the first and second recording / reproducing devices. Power supply method.

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