GB2384926A - A broadcast data receiver or set top box with a timer for turning it from on to off or standby and vice versa to save power. - Google Patents

A broadcast data receiver or set top box with a timer for turning it from on to off or standby and vice versa to save power. Download PDF

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Publication number
GB2384926A
GB2384926A GB0220489A GB0220489A GB2384926A GB 2384926 A GB2384926 A GB 2384926A GB 0220489 A GB0220489 A GB 0220489A GB 0220489 A GB0220489 A GB 0220489A GB 2384926 A GB2384926 A GB 2384926A
Authority
GB
United Kingdom
Prior art keywords
bdr
rtc
condition
standby
determined time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0220489A
Other versions
GB0220489D0 (en
Inventor
Michael Steval
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arris Global Ltd
Original Assignee
Pace Micro Technology PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pace Micro Technology PLC filed Critical Pace Micro Technology PLC
Publication of GB0220489D0 publication Critical patent/GB0220489D0/en
Publication of GB2384926A publication Critical patent/GB2384926A/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H04N21/4432—Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6143—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a satellite
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

A broadcast data receiver (BDR) or set top box is provided for receiving digital data from a broadcaster at a remote location and processing said data to provide video, audio and/or auxiliary data for display on a display screen and/or for listening to via speakers forming part of or connected to the BDR. Timer means in the form of a real time clock (RTC) is provided in the BDR such that at one or more pre-determined time intervals, the RTC changes the operational status of the BDR. The status change may be ON/OFF* or OFF/ON* (* or standby) and so may save power when a user has forgotten to switch it off. The timings may be set on an electronic programme guide (EPG).

Description

<Desc/Clms Page number 1>
Broadcast Data Receiver This invention relates to a broadcast data receiver, and particularly but not exclusively to a broadcast data receiver forming part of a television system.
Broadcast data receivers (BDRs), often referred to as set top boxes, receive digital data from a broadcaster at a remote location and process and decode the data to provide video, audio and/or auxiliary data for display on a television display screen connected thereto or integrally formed therewith, or for listening to via speakers. A remote control handset is typically provided for use with the BDR and television system to allow a user to control one or more functions and/or control the operational status of the BDR and television system.
After a user has finished using the television display screen and BDR, it has been found that whilst the user will typically use the remote control handset to switch the television set from an"on" (high power) condition to a"standby" (low power) condition, the user will usually forget to switch the BDR from an"on" condition to an"off" (no mains power) or"standby"condition.
As such, electricity is used to power the BDR when the BDR is not being used, such as for example, during late evening and the early hours of the morning. If this problem were to occur most nights in a large percentage of BDRs worldwide, it will be appreciated that a significant amount of electricity is wasted.
It is therefore an aim of the present invention to provide a BDR which reduces the likelihood of it being left in an"on" condition for long periods of time when it is not being used, thereby overcoming the abovementioned problem.
<Desc/Clms Page number 2>
According to a first aspect of the present invention there is provided a broadcast data receiver (BDR), said BDR receiving digital data from a broadcaster at a remote location and processing said data to provide video, audio and/or auxiliary data for display on a display screen and/or for listening to via speakers forming part of or connected to the BDR, and wherein said BDR is provided with timer means and, at one or more predetermined time intervals, said timer means changes the operational status of the BDR.
Preferably the change in operational status results in a change in the power consumption of the BDR and/or one or more further electrical devices connected thereto, such as speakers, headphones, stereo equipment and/or the like.
Preferably the timer means changes the operational status of the BDR between an"on"condition and a"standby"condition, thereby reducing power consumption to said BDR during said time intervals. For example, at the beginning of one of said time intervals, the BDR is switched from an on condition to a standby condition and at the end of said time interval, the BDR is switched from the standby condition to an on condition.
Preferably the timer means is a real time clock (RTC). The RTC can be a specific integrated circuit (IC) or, alternatively, the RTC can be generated in software from the main processor or sub-microprocessor. In either embodiment the RTC can be regularly synchronised to an external time standard derived from the broadcast satellite signal being received by the BDR.
Preferably the one or more pre-determined time intervals are set using an Electronic Programme Guide (EPG). The EPG is generated from at least a portion of said video, audio and/or auxiliary data processed by said BDR and typically provides
<Desc/Clms Page number 3>
television programme and/or channel listings/schedules and information. The EPG is preferably provided with a selectable option from a displayed menu or button which allows the user to input one or more time periods and/or select one or more manufacturer/broadcaster defined time periods.
In one embodiment the switching of the BDR from an"on" condition to a"standby"/"off"condition is independent of switching of any other apparatus integrally provided therewith or connected thereto, such as a television display screen and/or the like.
In an alternative embodiment, switching of the BDR between "on"and"standby"conditions can result in other connected apparatus undergoing a change in operational condition, such as moving between an"on"and a"standby"condition or between an"on"and an"off"condition.
In a further embodiment, one or more pre-determined EPG settings, such as pre-set video recordings, are provided which are able to override the timing means, thereby preventing the BDR from being switched off/moved to a standby condition.
Thus the present invention has the significant advantage in that it provides a means to greatly reduce the power consumption of the BDR when it is not in use, thereby saving energy provided by electricity supply companies and saving money for the BDR user. The reduction in electricity used is likely to reduce the damage caused to the environment and increase the working life of the BDR.
An embodiment of the present invention will now be described with reference to following figures, wherein:
<Desc/Clms Page number 4>
Figure 1 is an example of the television system of the present invention ; Figures 2 and 3 are examples of embodiments illustrating the real time clock of the present invention.
Figure 1 shows a television system 2, which includes a broadcast data receiver (BDR) 4 connected to a television display screen 6. Whilst it is usually obvious to a user that the television display screeb has been left on, due to a picture being displayed on screen 6, and/or sound being emitted from speakers, it is usually less obvious to a user that the BDR has been left on. This is because at best only a small LED display 8 indicating the status of the BDR 4 is typically provided. As a result, the user is likely to remember to switch the television display screen off or to a standby condition but the user will often forget to switch the BDR off or to a standby condition. This wastes electricity which, when accumulated over millions of BDRs worldwide, can amount to a large waste of electricity.
For example, a BDR can use 2-5W less energy in a standby condition than in an on condition and, in the future, this difference is likely to increase to around 10W.
For example: for a single BDR in normal usage: 5W x 8 hours per day when the BDR is not being used x 7 years of BDR operation = 102KWH per BDR.
If 1,000, 000 BDRs were to be left switched on for approximately 8 hours each day when they were not being used, it will be appreciated that the amount of electricity that will be wasted is significantly large.
<Desc/Clms Page number 5>
In accordance with the present invention, the BDR is provided with an internal real time clock (RTC), which is able to switch the BDR 4 from an"on"condition to an"off or standby condition at pre-determined time intervals. For example, a BDR may not normally be used between the hours of midnight and 08.00am and so between these times the RTC is set to switch the BDR from an"on"condition to a"standby"condition. At 8.00am, the RTC moves the BDR from a"standby"condition to an"on"condition again.
Alternatively, the timer means in the BDR can be set to switch the BDR from an"on"condition to a"standby"condition at midnight, and remain in this condition until its setting is manually changed by a user moving the BDR from a"standby" condition to an"on"condition.
r The user can set the RTC to be switched off or to a standby condition for any pre-determined time interval, which the user knows they are unlikely to be using the BDR. For example, over a holiday period, weekends, evenings and/or the like. However, it is noted that the manufacturer or broadcaster can provide default time intervals in which the timer is activated to switch the condition of the BDR between on and off or standby conditions.
The user typically sets the RTC via an EPG display. This is the advantage of using a RTC within the BDR (rather than an external timer controlling the power). The option of setting the RTC is provided in a drop down menu 10 on the EPG display. The user can select the relevant option using a remote control handset 12 and input the times 14,16 between which the BDR is to be switched to a"standby"or"off"condition.
<Desc/Clms Page number 6>
If any other settings have previously been selected via the EPG which require the BDR to be switched on during the time interval when the RTC is set to switch the BDR to a"standby" condition, such as an EPG setting for video recording a television programme, the previous settings override the RTC time interval, thereby allowing the BDR to be maintained in an "on"condition, at least for the period of the video recording.
In addition, it is possible that a change in the operational status of the BDR using the RTC can result in a change in the operational status of other apparatus attached to the BDR, for example, electrical apparatus such as speakers, stereo equipment and/or the like.
The RTC is described in more detail below and with reference to figures 2 and 3.
Referring firstly to figure 2, there is illustrated an embodiment of a RTC provided in the main processor of the BDR. The main processor (i. e. , ST-5512) 18 of the BDR has an independent low power RTC with it's own low power oscillator clock (LPclock)
20 which uses an external Xtal quartz crystal (32. 768kHz) 22, and an isolated positive voltage supply (Vdd (rtc)) 24 which may be supplied from a battery power source 26.
It is a fully functional RTC and can be used to switch the ST- 5512 into a low power mode, halting the main processor and turning off other internal clocks, thereby moving the BDR to a standby condition.
During normal operation of the BDR, the ST5512 internal RTC is initially configured and synchronised to local time by the ST5512, which derives this information from the incoming broadcast data stream in the BDR. The ST5512 can then
<Desc/Clms Page number 7>
regularly read the local time from the RTC, even if the broadcast signal to the BDR is lost.
In use in the present invention, the user enters the preferred time at which the BDR is to enter a"standby"condition through the EPG menu of the BDR. For example, the user can set the preferred time to be midnight. This time value is then stored in memory of the BDR and the BDR operating software continuously compares the time value against the local time (i. e.
RTC).
At midnight, the local RTC time and the user selected stored time value are the same and this activates switch-off of nonessential parts of the external circuitry of the BDR. THE ST- 5512 itself may also optionally switch into a low power mode by pre-setting its "low power -alarm counter" register if this mode of operation is acceptable to the broadcaster.
If the low power alarm counter is used, the low power alarm counter register value defines the time period for which the ST- 5512 will stay in low-power mode. When the counter expires, the ST-5512 will revert to normal operation. The time at which the counter expires can correspond to a time value entered by the user via the EPG. Thus, for example, the user can set the time value such that the BDR is switched on again at 8.00am the following day.
A further embodiment of an RTC is illustrated in figure 3 wherein the RTC is external to the main BDR processor but is still provided within the BDR.
Many types of external RTC clock chips are available for use with this embodiment of the present invention, which may or may not have non volatile random access memory (NVRAM) or
<Desc/Clms Page number 8>
battery backup. An example of these clocks is one which has a serial interface, i. e. PCF8563. Figure 3 illustrates the typical interface between the processor (ST-5512) 18 of the BDR and an external PCF8563 real time clock chip 28. Communication between the processor 18 and the real time clock chip 28 is through an I2C serial bus (de-facto standard bus) including a serial data line (SDA) 30 and a serial clock line (SCL) 32 at this interface. The RTC 28 can"Interrupt"the ST-5512 processor 18 using the"INT" (interrupt) signal, which is active low.
Figure 3 also shows the clock oscillator Xtal 22 and the battery back up supply 26 (battery or capacitor) which provides power to the RTC when the BDR is switched off completely.
During normal use of the external RTC in figure 3, the RTC is initially configured and synchronised to local time by the ST- 5512 processor 18, which derives this information from the incoming broadcast stream received by the BDR. The ST5512 can then regularly read the local time from the RTC even if the broadcast signal to the BDR is lost.
In order to configure the RTC 28 to allow the BDR to be moved to a"standby mode", the user enters the preferred time (i. e. midnight) at which the BDR is to switch from an"on"condition to a"standby"condition via the EPG. This information is passed to the RTC 28, which will initiate an internal alarm counter used to alert the ST5512 at the preferred time using the "INT"line.
At midnight the RTC alarm counter expires and the"INT"line 24 goes low and interrupts the ST5512 processor. The ST5512 processor then switches off the non-essential parts of the external circuitry and may even switch itself into a low power (dormant) mode if this is acceptable to the broadcaster. In
<Desc/Clms Page number 9>
addition, if required, the ST-5512 processor could, before switching itself into a low power mode, reset the RTC alarm to switch itself back to a full or high power mode, reset the RTC alarm to wake it up again at a pre-determined time.

Claims (15)

Claims :
1. A broadcast data receiver (BDR), said BDR receiving digital data from a broadcaster at a remote location and processing said data to provide video, audio and/or auxiliary data for display on a display screen and/or for listening to via speakers forming part of or connected to the BDR, and wherein said BDR is provided with timer means and, at one or more pre-determined time intervals, said timer means changes the operational status of the BDR.
2. A BDR according to claim 1 wherein the change in operational status results in a change in power consumption of the BDR and/or one or more further electrical devices connected thereto at said one or more pre-determined time intervals.
3. A BDR according to claim 1 wherein the change in operational status of the BDR is independent of a change in operational status of any other electrical device connected to said BDR.
4. A BDR according to claim 1 wherein the change in operational status results in the BDR being moved between an"on"or a high power condition to an"off","standby" or low power condition.
5. A BDR according to claim 1 wherein at the start of a pre- determined time interval the BDR is moved from one of an "on"condition or"off"/"standby"condition and at the end of the pre-determined time interval the BDR is moved to the other of an"on"condition or"off"/"standby" condition.
<Desc/Clms Page number 11>
6. A BDR according to claim 1 wherein the one or more pre- determined time intervals are set by the user via an electronic programme guide (EPG) displayed on a display screen connected to or forming part of said BDR.
7. A BDR according to claim 6 wherein a display menu in the EPG is provided with a selectable option from which the user can input one or more pre-determined time intervals or select a time interval from one or more pre-determined time intervals.
8. A BDR according to claim 1 wherein the timer means is a real time clock (RTC).
9. A BDR according to claim 8 wherein the RTC is formed from an integrated circuit.
10. A BDR according to claim 8 wherein the RTC is generated from software from the microprocessor of said BDR.
11. A BDR according to claim 8 wherein the RTC is synchronised to an external time standard derived from a broadcast satellite signal being received by the BDR.
12. A BDR according to claim 8 wherein the RTC is provided as part of the main processor of the BDR.
13. A BDR according to claim 8 wherein the RTC is provided within the BDR but externally of the main processor of the BDR.
<Desc/Clms Page number 12>
14. A BDR according to claim 1 wherein the timer means which changes the operational status of the BDR can be overridden by one or more previously programmed EPG settings.
15. A BDR substantially as hereinbefore described with reference to the accompanying figures.
GB0220489A 2001-09-06 2002-09-04 A broadcast data receiver or set top box with a timer for turning it from on to off or standby and vice versa to save power. Withdrawn GB2384926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0121559.9A GB0121559D0 (en) 2001-09-06 2001-09-06 Broadcast data receiver

Publications (2)

Publication Number Publication Date
GB0220489D0 GB0220489D0 (en) 2002-10-09
GB2384926A true GB2384926A (en) 2003-08-06

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Application Number Title Priority Date Filing Date
GBGB0121559.9A Ceased GB0121559D0 (en) 2001-09-06 2001-09-06 Broadcast data receiver
GB0220489A Withdrawn GB2384926A (en) 2001-09-06 2002-09-04 A broadcast data receiver or set top box with a timer for turning it from on to off or standby and vice versa to save power.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0121559.9A Ceased GB0121559D0 (en) 2001-09-06 2001-09-06 Broadcast data receiver

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1701539A2 (en) * 2005-03-10 2006-09-13 BenQ Corporation Television program alert device and method
EP1887579A1 (en) * 2005-04-12 2008-02-13 Matsushita Electric Industrial Co., Ltd. Video/audio processing device and apparatus connected to the same
EP2105822A1 (en) * 2008-03-28 2009-09-30 Sony Corporation Electronic device with switch off-function and method for providing a switch off-function for an electronic device
GB2468923A (en) * 2009-03-27 2010-09-29 Sony Uk Ltd A television apparatus for controlling the power status during a sequence of time based programmed events.
WO2012022996A1 (en) * 2010-08-18 2012-02-23 Thomson Licensing Methods for operating an apparatus having multiple stand-by modes
EP2579504A1 (en) 2011-10-05 2013-04-10 Swisscom AG Method and system for remote control of an electricity consummer
CN104063033A (en) * 2013-03-21 2014-09-24 华为终端有限公司 State switching method based on electronic equipment interlinking and electronic equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6178447B1 (en) * 1998-07-16 2001-01-23 Alcatel Telecommunications network receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6178447B1 (en) * 1998-07-16 2001-01-23 Alcatel Telecommunications network receiver

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1701539A2 (en) * 2005-03-10 2006-09-13 BenQ Corporation Television program alert device and method
EP1701539A3 (en) * 2005-03-10 2010-08-18 AU Optronics Corporation Television program alert device and method
CN101160631B (en) * 2005-04-12 2012-02-22 松下电器产业株式会社 Video/audio processing device and power control method
EP1887579A1 (en) * 2005-04-12 2008-02-13 Matsushita Electric Industrial Co., Ltd. Video/audio processing device and apparatus connected to the same
EP1887579A4 (en) * 2005-04-12 2009-06-03 Panasonic Corp Video/audio processing device and apparatus connected to the same
US8583951B2 (en) 2005-04-12 2013-11-12 Panasonic Corporation Video/audio processing device and apparatus connected to the same
EP2105822A1 (en) * 2008-03-28 2009-09-30 Sony Corporation Electronic device with switch off-function and method for providing a switch off-function for an electronic device
GB2468923A (en) * 2009-03-27 2010-09-29 Sony Uk Ltd A television apparatus for controlling the power status during a sequence of time based programmed events.
GB2468923B (en) * 2009-03-27 2014-07-09 Sony Uk Ltd Television apparatus
WO2012022996A1 (en) * 2010-08-18 2012-02-23 Thomson Licensing Methods for operating an apparatus having multiple stand-by modes
US9760157B2 (en) 2010-08-18 2017-09-12 Thomson Licensing Methods for operating an apparatus having multiple stand-by modes
EP2579504A1 (en) 2011-10-05 2013-04-10 Swisscom AG Method and system for remote control of an electricity consummer
EP2579505A1 (en) 2011-10-05 2013-04-10 Swisscom AG Method and system for remote control of an electrical consumer
CN104063033A (en) * 2013-03-21 2014-09-24 华为终端有限公司 State switching method based on electronic equipment interlinking and electronic equipment

Also Published As

Publication number Publication date
GB0121559D0 (en) 2001-10-24
GB0220489D0 (en) 2002-10-09

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