WO2010051199A1 - Method and apparatus for browser based advertisement insertion - Google Patents

Method and apparatus for browser based advertisement insertion Download PDF

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Publication number
WO2010051199A1
WO2010051199A1 PCT/US2009/061466 US2009061466W WO2010051199A1 WO 2010051199 A1 WO2010051199 A1 WO 2010051199A1 US 2009061466 W US2009061466 W US 2009061466W WO 2010051199 A1 WO2010051199 A1 WO 2010051199A1
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WO
WIPO (PCT)
Prior art keywords
content
buffer
display
loading
mhd
Prior art date
Application number
PCT/US2009/061466
Other languages
French (fr)
Inventor
Xin Feng
Srinivasa Dharmaji
Original Assignee
Goldspot Media, Inc.
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 Goldspot Media, Inc. filed Critical Goldspot Media, Inc.
Priority to EP09824024A priority Critical patent/EP2340645A4/en
Publication of WO2010051199A1 publication Critical patent/WO2010051199A1/en

Links

Classifications

    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/812—Monomedia components thereof involving advertisement data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/02—Marketing; Price estimation or determination; Fundraising
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/02—Marketing; Price estimation or determination; Fundraising
    • G06Q30/0241—Advertisements
    • G06Q30/0251—Targeted advertisements
    • G06Q30/0267—Wireless devices
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2668—Creating a channel for a dedicated end-user group, e.g. insertion of targeted commercials based on end-user profiles
    • 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
    • H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
    • H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
    • 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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44016—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving splicing one content stream with another content stream, e.g. for substituting a video clip
    • 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
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
    • 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
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/4424—Monitoring of the internal components or processes of the client device, e.g. CPU or memory load, processing speed, timer, counter or percentage of the hard disk space used
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/4508—Management of client data or end-user data
    • H04N21/4532—Management of client data or end-user data involving end-user characteristics, e.g. viewer profile, preferences
    • 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
    • H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
    • 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 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
    • H04N21/64723—Monitoring of network processes or resources, e.g. monitoring of network load
    • H04N21/6473—Monitoring network processes errors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/165—Centralised control of user terminal ; Registering at central

Definitions

  • the invention relates to displaying content and advertisements on mobile hand- held devices. More particularly, the invention relates to improving the quality of the user experience during content viewing in connection with bandwidth-limited transmission of data.
  • MHDs mobile handheld devices
  • the quality of the viewed image is fuzzy and intermittent due to the variable nature of the bandwidth that is available to connect the MHD to the source or transmitter of content.
  • the volume of data to be viewed as content prevents the pre-downloading and storing of data on the MHD to improve this situation.
  • Alternate content, including advertisements, to be viewed with the content is typically downloaded and stored on the MHD and inserted at predefined advertisement spots (ad spots) during content viewing by a micro- splicer residing on the MHD.
  • advertisement spots predefined advertisement spots
  • the rendering of the content for viewing typically starts only when the buffer crosses a threshold of fill. This is done to provide the user with a reasonable level of quality of viewing experience.
  • the buffer is replenished or depleted.
  • the viewing experience degrades. This is because there is no time to retrieve dropped packets and enable full frame displays to retain the viewing quality.
  • the user sees fuzzy and partial frames which result in a very low quality viewing experience.
  • MHD mobile hand held device
  • CB content-buffer
  • Figure 1 is a block schematic diagram showing a system for insertion of content or alternate content into a content stream based on thresholds set in a content buffer according to the invention
  • Figure 2 is a block schematic diagram showing a sequence of insertion of alternate content and content into the display buffer for viewing based on the thresholds set in the content buffer according to the invention.
  • Figure 3 is a flow chart showing a process for improving the quality of a user content viewing experience on a mobile hand held device (MHD) according to the invention.
  • the content When digital content is received and displayed on a mobile handheld device (MHD), the content is transferred from the content source to the MHD via a wireless medium. To provide a good viewing experience to the user, the content is downloaded and buffered on the MHD prior to, and during, viewing. Normal wireless bandwidth varies with atmospheric conditions, distance, obstructions in the path, etc. and, hence, the speed at which a content-buffer (CB) on the MHD is replenished changes. This can result in very low quality viewing experience for the user. Therefore, the capability of a micro-splicer for alternate content scheduling is used to enable stored alternate-content or advertisement insertion during periods of low viewing quality, when the CB does not hold sufficient content during the viewing period. This alternate content insertion allows the CB to be refilled before the user resumes content viewing, thereby improving the quality of user viewing experience on the MHD.
  • MHD mobile handheld device
  • An embodiment of the invention improves the user viewing experience on an MHD, where poor bandwidth availability affects data reception speed and viewing quality.
  • the MHD downloads video content and stores it in a content buffer (CB) memory prior to, and during, user content viewing.
  • CB content buffer
  • the quantum of data is limited by the MHD's memory capacity, and continuous replenishment of the CB is accomplished through downloading of data.
  • Shrinking bandwidth in the wireless transmission reduces the speed at which the CB is replenished. This can result in an inadequate amount of data in buffer for content display, which produces incomplete frames due to dropped packets which could not be recovered in time. This can result in a lower number of frames per second and a very low quality viewing experience for the user.
  • An embodiment of the invention allows continuous viewing of frames of information that is either pooled from the CB, which is being replenished continuously, or from a second or alternate content buffer (ACB).
  • the ACB may contain downloaded, pre-stored alternate content, for example, advertisements.
  • the downloaded and pre-stored alternate content may be stored in a separate storage unit linked to the ACB for fast replenishment of the ACB when the advertisements are being displayed.
  • the choice of which stream of data to view, and from which buffer is defined by the fill and empty thresholds or set levels of the CB. That data stream is transferred to a display buffer from the CB or ACB, based on the decision for rendering and display on the MHD.
  • the micro-splicer has two types of content buffer: an ACB which holds an alternate stream of data, e.g. advertisements; and the CB which contains a current viewing data stream to choose from.
  • the choice of data stream to be viewed at any instant is based on thresholds for fill and empty, set on the CB.
  • a threshold checker is used to monitor the fill status of the CB. This status information is supplied to the micro- splicer from the time the user that the MHD enables viewing.
  • the micro-splicer decides which available buffer, i.e. the CB or the ACB, is to be the current buffer for loading content into the display buffer for viewing. The system then allows streams of data from that current buffer to be used to fill the display buffer and, therefore, be used for viewing on the MHD.
  • the micro- splicer When the CB has a fill value that is below the set empty threshold, the micro- splicer enables the content from ACB to be viewed on MHD. Once the CB fill value crosses the set fill threshold, and the alternate content that is being viewed is completed, the micro-splicer switches back to the CB for viewing of content on the MHD. By monitoring and inserting alternate content during the period when the CB has less than a amount of sufficient content for providing a quality viewing experience, the micro-splicer allows the CB to be refilled. If, during filling time, the end of the content file is reached, the micro-splicer loads the content file at the end of advertisement file that is being displayed, even if fill threshold value for the CB has not been reached. This enables content viewing to be completed without further interruption and enables the micro-splicer to provide an improved viewing experience on MHD
  • Fig. 1 is a block schematic diagram of a system 100 for browser based advertisement insertion according to the invention.
  • Fig. 2 is a block schematic diagram showing the insertion of content from the CB 102 and alternate content from the ACB 103, into the display buffer 120, for display in accordance with the system shown in Fig. 1.
  • a micro-splicer 101 is shown that is capable of acting as a content scheduler, and also as an alternate content scheduler.
  • the micro-splicer is used to control the loading of content received via wireless link 110 into the CB 102, or to control the loading of advertisements 105 transferred from the store 104 into the ACB 103 into the display buffer 120.
  • whatever is in the display buffer 120 is displayed on the handheld display 230.
  • a threshold checker 108 continuously monitors the status of the CB 102.
  • the threshold checker monitors the fill threshold (ft) 106 and the empty threshold (et) 107 of the CB 102, as well as the presence of an end-of-content-file (EOCF) data block in the CB 102, and provides control information to the micro-splicer.
  • the control information is sent to the micro-splicer 101 by means of a control output link 109 from the threshold checker 108.
  • the CB When a user enables viewing of content stream over the wireless link 110, the CB starts at a value below Et, as shown at time to in Fig. 2.
  • This control information is sent to the micro-splicer by the threshold checker ' 108 via the control output link 109.
  • the micro-splicer Based upon the input received, the micro-splicer enables the ACB 103 to load and display an advertisement (ad) 105 that was already transferred into the ACB 103 from the pre-stored ads in the storage 104.
  • the CB 102 At time t1 , upon completion of the advertisement or advertisements being displayed, the CB 102 has a filled buffer with buffer level greater than the Ft 106.
  • the micro-splicer starts loading the content from the CB 102 into the display buffer 120, thus enabling viewing of the content on the handheld display 130.
  • the CB 102 continues to be filled by content received from the input via the wireless connection 110 during content viewing. This allows the micro-splicer 101 to keep loading the display buffer from CB 102, thus enabling continued viewing of the content by the user. If, due to any drop in bandwidth, the filling of the CB 102 slows down and the content in CB 102 falls below Et 107, then the threshold checker provides a control signal on the control output link 109 to micro-splicer 101.
  • the micro-splicer 101 stops the content loading into the display buffer 120 and loads the next alternate content or advertisements 105 from the ACB 103, as shown at time t2 in Fig. 2.
  • the number of advertisements displayed is based on the time it takes for the CB to be refilled to a value over Ft 106, as shown at time t3 in Fig. 2.
  • the threshold checker 108 provides a control signal on the control output link 109 to the micro-splicer to stop the loading of the advertisements from ACB 103 and start loading the content from the CB 102. This process repeats, based upon the control signals from the threshold checker 108, until the content viewing on the MHD is switched off.
  • a control signal on the control output link 109 intimates this to the micro-splicer 101.
  • the micro-splicer starts loading the content from the CB 102 into the display buffer 120 at the end of the advertisement currently being displayed to the EOCF. This allows the completion of the content viewing by the user, even though the value of content in CB 102 has not reached Ft 106.
  • the disclosed method improves the quality of the viewing experience for the MHD user. By inserting advertisements to cover the gaps in display during the periods when the CB 102 is depleted and filling, the continuity of the viewing experience is maintained.
  • Fig. 3 is a flowchart showing a process 300 for improving the viewing quality on the MHD according to the invention.
  • the user initiates viewing of the content on the MHD at the start of the process (S301).
  • the CB starts loading content from the wireless link (S302).
  • advertisements are loaded into the ACB from the storage containing pre-downloaded advertisements (S303).
  • a threshold checker continuously checks the fill status of the CB. If the CB fill status is below the threshold value Et (S304), as it is at start of viewing, the micro-splicer stops loading the display buffer from the CB (S305) and starts loading the display buffer from the ACB (S306) with alternate content, e.g. advertisements.
  • the CB is monitored to detect when the fill status reaches the threshold Ft (S307).
  • the micro-splicer stops the loading of the display buffer from the ACB (S308) at the end of the currently loading advertisement and begins loading the display buffer from the CB (S309).
  • the threshold checker also checks for the EOCF in the CB. If, at any time, the EOCF is recognized (S310) while the display buffer is being loaded from the ACB, the micro-splicer stops loading of the display buffer from the ACB (S311) and starts loading the display buffer from the CB (S312) after the completion of the current advertisement.
  • the display buffer loading is continued to the EOCF. Any content loaded into the display buffer is rendered and sent to the display screen (S313) and displayed on the screen (S314).
  • the exemplary embodiment of the invention for improving the quality of viewing experience on the MHD for the user described herein is not meant to be limiting in any way.
  • Certain elements of the invention may be implemented in hardware, software, firmware, or any combination thereof.
  • a sequence of instructions is provided on a tangible medium accessible by a computer or a computing capable device, such that when the sequence of the instructions are executed on the computer or the computing devices the invention taught herein is realized.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Strategic Management (AREA)
  • Accounting & Taxation (AREA)
  • Development Economics (AREA)
  • Finance (AREA)
  • Marketing (AREA)
  • Game Theory and Decision Science (AREA)
  • Economics (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Computer Security & Cryptography (AREA)
  • Information Transfer Between Computers (AREA)
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Abstract

In order to have a good viewing experience on a mobile handheld display device (MHD) 100 the content is downloaded and buffered on the MHD 100 prior to and during viewing. Normal wireless bandwidth varies with atmospheric conditions, distance, obstructions in the path etc. and hence the speed at which the content- buffer (CB) 102 on the MHD 100 gets replenished changes. This can result in very low quality viewing experience for the user. Therefore, capability for alternate content scheduling of the micro-splicer 101 is used to enable stored alternate-content or advertisement 104 to be buffered for insertion during periods of low viewing quality, when the CB 102 does not hold sufficient content during the viewing period. This buffered alternate content 105 insertion allow the CB 102 on the MHD 100 to be refilled before resuming the content viewing, thereby improving the quality of viewing experience on the MHD.

Description

Method and Apparatus for Browser Based Advertisement Insertion
CROSS REFERENCE TO RELATED APPLICATIONS
This patent application claims the benefit of U.S. patent application serial number 12/582,573, Method and Apparatus for Browser Based Advertisement Insertion, filed October 20, 2009 and U.S. provisional patent application serial no. 61/197,749, Browser Based Advertisement insertion, filed 29 October 2008, the entirety of each of which are incorporated herein by this reference thereto.
BACKGROUND OF THE INVENTION
TECHNICAL FIELD
The invention relates to displaying content and advertisements on mobile hand- held devices. More particularly, the invention relates to improving the quality of the user experience during content viewing in connection with bandwidth-limited transmission of data.
DESCRIPTION OF THE BACKGROUND ART
Content viewing on mobile handheld devices (MHDs) is beginning to become popular. However, in most cases the quality of the viewed image is fuzzy and intermittent due to the variable nature of the bandwidth that is available to connect the MHD to the source or transmitter of content. The volume of data to be viewed as content prevents the pre-downloading and storing of data on the MHD to improve this situation. Alternate content, including advertisements, to be viewed with the content, on the other hand is typically downloaded and stored on the MHD and inserted at predefined advertisement spots (ad spots) during content viewing by a micro- splicer residing on the MHD. The features and operation of a typical micro-splicer is explained in detail in the co-pending U.S. patent application serial no. 11/828,204, Micro-splicer for Inserting Alternate Content to a Content Stream on a Handheld device, filed 25 July 2007, assigned to common assignee, which application is incorporated herein in its entirety by the reference thereto. The content for viewing is hence buffered on the MHD as the user of the MHD enables the viewing process.
The rendering of the content for viewing typically starts only when the buffer crosses a threshold of fill. This is done to provide the user with a reasonable level of quality of viewing experience. Once the rendering and viewing starts, depending on the bandwidth available for the content down load, the buffer is replenished or depleted. When the buffer on the MHD is depleted, the viewing experience degrades. This is because there is no time to retrieve dropped packets and enable full frame displays to retain the viewing quality. Hence, with a depleted buffer on the MHD the user sees fuzzy and partial frames which result in a very low quality viewing experience.
It would therefore be advantageous to provide a way of improving the viewing quality by allowing the buffer on the MHD to be replenished while the user of the MHD is able to watch full frames of information, even in a low bandwidth availability situation.
SUMMARY OF THE INVENTION
Content is downloaded and buffered on a mobile hand held device (MHD) 100 prior to and during viewing to provide a good viewing experience. Normal wireless bandwidth varies with atmospheric conditions, distance, obstructions in the path, etc. and, hence, the speed at which a content-buffer (CB) on the MHD is replenished changes. This can result in very low quality viewing experience for the user. Therefore, the capability of a micro-splicer for alternate content scheduling is used to enable stored alternate-content or advertisements to be buffered for insertion during periods of low viewing quality, when the CB does not hold sufficient content during the viewing period. This buffered alternate content insertion allows the CB on the MHD to be refilled before resuming the content viewing, thereby improving the quality of viewing experience on the MHD.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a block schematic diagram showing a system for insertion of content or alternate content into a content stream based on thresholds set in a content buffer according to the invention;
Figure 2 is a block schematic diagram showing a sequence of insertion of alternate content and content into the display buffer for viewing based on the thresholds set in the content buffer according to the invention; and
Figure 3 is a flow chart showing a process for improving the quality of a user content viewing experience on a mobile hand held device (MHD) according to the invention.
DETAILED DESCRIPTION OF THE INVENTION
When digital content is received and displayed on a mobile handheld device (MHD), the content is transferred from the content source to the MHD via a wireless medium. To provide a good viewing experience to the user, the content is downloaded and buffered on the MHD prior to, and during, viewing. Normal wireless bandwidth varies with atmospheric conditions, distance, obstructions in the path, etc. and, hence, the speed at which a content-buffer (CB) on the MHD is replenished changes. This can result in very low quality viewing experience for the user. Therefore, the capability of a micro-splicer for alternate content scheduling is used to enable stored alternate-content or advertisement insertion during periods of low viewing quality, when the CB does not hold sufficient content during the viewing period. This alternate content insertion allows the CB to be refilled before the user resumes content viewing, thereby improving the quality of user viewing experience on the MHD.
An embodiment of the invention improves the user viewing experience on an MHD, where poor bandwidth availability affects data reception speed and viewing quality. As noted above, the MHD downloads video content and stores it in a content buffer (CB) memory prior to, and during, user content viewing. The quantum of data is limited by the MHD's memory capacity, and continuous replenishment of the CB is accomplished through downloading of data. Shrinking bandwidth in the wireless transmission reduces the speed at which the CB is replenished. This can result in an inadequate amount of data in buffer for content display, which produces incomplete frames due to dropped packets which could not be recovered in time. This can result in a lower number of frames per second and a very low quality viewing experience for the user. By using the capabilities of a micro-splicer to enable stored alternate-content or advertisement insertion during periods of low viewing quality, the limitations introduced in the CB due to low availability of bandwidth are overcome. This alternate content insertion allows the CB to be refilled before the user resumes content viewing. Alternate content or advertisements are used to cover the low quality viewing period. Hence, an improvement in the quality of user viewing experience on the MHD is achieved.
An embodiment of the invention allows continuous viewing of frames of information that is either pooled from the CB, which is being replenished continuously, or from a second or alternate content buffer (ACB). The ACB may contain downloaded, pre-stored alternate content, for example, advertisements. The downloaded and pre-stored alternate content may be stored in a separate storage unit linked to the ACB for fast replenishment of the ACB when the advertisements are being displayed. The choice of which stream of data to view, and from which buffer, is defined by the fill and empty thresholds or set levels of the CB. That data stream is transferred to a display buffer from the CB or ACB, based on the decision for rendering and display on the MHD.
In a presently preferred embodiment of the invention, the micro-splicer has two types of content buffer: an ACB which holds an alternate stream of data, e.g. advertisements; and the CB which contains a current viewing data stream to choose from. The choice of data stream to be viewed at any instant is based on thresholds for fill and empty, set on the CB. A threshold checker is used to monitor the fill status of the CB. This status information is supplied to the micro- splicer from the time the user that the MHD enables viewing. Based on the fill status, the micro-splicer decides which available buffer, i.e. the CB or the ACB, is to be the current buffer for loading content into the display buffer for viewing. The system then allows streams of data from that current buffer to be used to fill the display buffer and, therefore, be used for viewing on the MHD.
When the CB has a fill value that is below the set empty threshold, the micro- splicer enables the content from ACB to be viewed on MHD. Once the CB fill value crosses the set fill threshold, and the alternate content that is being viewed is completed, the micro-splicer switches back to the CB for viewing of content on the MHD. By monitoring and inserting alternate content during the period when the CB has less than a amount of sufficient content for providing a quality viewing experience, the micro-splicer allows the CB to be refilled. If, during filling time, the end of the content file is reached, the micro-splicer loads the content file at the end of advertisement file that is being displayed, even if fill threshold value for the CB has not been reached. This enables content viewing to be completed without further interruption and enables the micro-splicer to provide an improved viewing experience on MHD
Fig. 1 is a block schematic diagram of a system 100 for browser based advertisement insertion according to the invention. Fig. 2 is a block schematic diagram showing the insertion of content from the CB 102 and alternate content from the ACB 103, into the display buffer 120, for display in accordance with the system shown in Fig. 1. In Fig. 1 , a micro-splicer 101 is shown that is capable of acting as a content scheduler, and also as an alternate content scheduler. The micro-splicer is used to control the loading of content received via wireless link 110 into the CB 102, or to control the loading of advertisements 105 transferred from the store 104 into the ACB 103 into the display buffer 120. Typically, whatever is in the display buffer 120 is displayed on the handheld display 230. A threshold checker 108 continuously monitors the status of the CB 102. The threshold checker monitors the fill threshold (ft) 106 and the empty threshold (et) 107 of the CB 102, as well as the presence of an end-of-content-file (EOCF) data block in the CB 102, and provides control information to the micro-splicer. The control information is sent to the micro-splicer 101 by means of a control output link 109 from the threshold checker 108.
When a user enables viewing of content stream over the wireless link 110, the CB starts at a value below Et, as shown at time to in Fig. 2. This control information is sent to the micro-splicer by the threshold checker '108 via the control output link 109. Based upon the input received, the micro-splicer enables the ACB 103 to load and display an advertisement (ad) 105 that was already transferred into the ACB 103 from the pre-stored ads in the storage 104. At time t1 , upon completion of the advertisement or advertisements being displayed, the CB 102 has a filled buffer with buffer level greater than the Ft 106. In response to this, the micro-splicer starts loading the content from the CB 102 into the display buffer 120, thus enabling viewing of the content on the handheld display 130. The CB 102 continues to be filled by content received from the input via the wireless connection 110 during content viewing. This allows the micro-splicer 101 to keep loading the display buffer from CB 102, thus enabling continued viewing of the content by the user. If, due to any drop in bandwidth, the filling of the CB 102 slows down and the content in CB 102 falls below Et 107, then the threshold checker provides a control signal on the control output link 109 to micro-splicer 101. Based upon the control signal, the micro-splicer 101 stops the content loading into the display buffer 120 and loads the next alternate content or advertisements 105 from the ACB 103, as shown at time t2 in Fig. 2. The number of advertisements displayed is based on the time it takes for the CB to be refilled to a value over Ft 106, as shown at time t3 in Fig. 2. When the CB 102 is filled to a value over Ft 106, the threshold checker 108 provides a control signal on the control output link 109 to the micro-splicer to stop the loading of the advertisements from ACB 103 and start loading the content from the CB 102. This process repeats, based upon the control signals from the threshold checker 108, until the content viewing on the MHD is switched off.
If, during the fill time of the CB while advertisements from ACB are being displayed the EOCF is identified by the threshold checker 108, then a control signal on the control output link 109 intimates this to the micro-splicer 101. In response to the control input received, the micro-splicer starts loading the content from the CB 102 into the display buffer 120 at the end of the advertisement currently being displayed to the EOCF. This allows the completion of the content viewing by the user, even though the value of content in CB 102 has not reached Ft 106.
By enabling the CB 102 to be filled to a reasonable value before starting display of content, and allowing the CB to be refilled if depleted without degrading the quality of display, the disclosed method improves the quality of the viewing experience for the MHD user. By inserting advertisements to cover the gaps in display during the periods when the CB 102 is depleted and filling, the continuity of the viewing experience is maintained.
Fig. 3 is a flowchart showing a process 300 for improving the viewing quality on the MHD according to the invention. The user initiates viewing of the content on the MHD at the start of the process (S301). Immediately, the CB starts loading content from the wireless link (S302). Simultaneously, advertisements are loaded into the ACB from the storage containing pre-downloaded advertisements (S303). A threshold checker continuously checks the fill status of the CB. If the CB fill status is below the threshold value Et (S304), as it is at start of viewing, the micro-splicer stops loading the display buffer from the CB (S305) and starts loading the display buffer from the ACB (S306) with alternate content, e.g. advertisements. The CB is monitored to detect when the fill status reaches the threshold Ft (S307). When it reaches the threshold Ft, the micro-splicer stops the loading of the display buffer from the ACB (S308) at the end of the currently loading advertisement and begins loading the display buffer from the CB (S309). The threshold checker also checks for the EOCF in the CB. If, at any time, the EOCF is recognized (S310) while the display buffer is being loaded from the ACB, the micro-splicer stops loading of the display buffer from the ACB (S311) and starts loading the display buffer from the CB (S312) after the completion of the current advertisement. The display buffer loading is continued to the EOCF. Any content loaded into the display buffer is rendered and sent to the display screen (S313) and displayed on the screen (S314).
The exemplary embodiment of the invention for improving the quality of viewing experience on the MHD for the user described herein is not meant to be limiting in any way. Certain elements of the invention may be implemented in hardware, software, firmware, or any combination thereof. For example, when the invention, or portions thereof, is implemented in software, a sequence of instructions is provided on a tangible medium accessible by a computer or a computing capable device, such that when the sequence of the instructions are executed on the computer or the computing devices the invention taught herein is realized.
Although the invention is described herein with reference to the preferred embodiment, one skilled in the art will readily appreciate that other applications may be substituted for those set forth herein without departing from the spirit and scope of the present invention. Accordingly, the invention should only be limited by the Claims included below.

Claims

1. A method for improving viewing quality on a mobile handheld device (MHD1) comprising the steps of: preloading the MHD with content into a first buffer; receiving content in real-time from a remote source and loading said received content into a second buffer; displaying said preloaded content from said first buffer when said second buffer is filled below a first threshold level; and displaying said real-time content from said second buffer when said second buffer is filled above a second threshold value.
2. A computer readable storage medium containing computer executable instructions which, when executed by a computer, implement the method of
Claim 1.
3. A mobile handheld device, comprising: a display; a display buffer coupled to said display; a first content buffer for buffering a received content stream, said content buffer coupled to said display buffer via a switch; a second content buffer for buffering an alternate content stream for display on said display, said second content buffer coupled to said display buffer via said switch; a storage unit for storing preloaded content, said storage unit coupled to said second content buffer; a threshold checker for checking any of a fill and an empty status of said first content buffer, for identifying an end-of-content-file, and for outputting a control signal responsive thereof; and a micro-splicer coupled to said first content buffer, said second content buffer, said storage unit, and said switch, said micro-splicer configured to operate said switch in response to said control signal to provide alternate content from said second content buffer to said display buffer when said first content buffer has insufficient content to ensure good quality display on said handheld display; wherein viewing quality on the mobile handheld device is improved
4. The mobile handheld device of Claim 3, wherein said micro-splicer is configured to load said second content buffer from said storage unit at the same time that advertisements are loaded into said display buffer from said second content buffer, thereby emptying said second content buffer.
5. A method for improving the viewing quality on a mobile handheld device (MHD), comprising the steps of: a user initiating viewing of content on said MHD; a content buffer (CB) starting to load content into a display buffer of said
MHD from a wireless link; simultaneously loading alternate content into an alternate content buffer (ACB) from a storage containing pre-downloaded alternate content; a threshold checker continuously checking a fill status of the CB; wherein, if the CB fill status is below a threshold value Et, a micro-splicer stops loading the display buffer from the CB and starts loading the display buffer from the ACB with alternate content; monitoring the CB to detect when the CB fill status reaches the threshold value Ft; when the CB fill status reaches the threshold Ft, the micro-splicer stopping the loading of the display buffer from the ACB at the end of a currently loading advertisement and beginning loading of the display buffer from the CB; the threshold checker checking for an-of-content-file EOCF data block in the CB; wherein, if at any time the EOCF is recognized while the display buffer is being loaded from the ACB, the micro-splicer stops loading of the display buffer from the ACB and starts loading the display buffer from the CB after the completion of a current advertisement; continuing loading the display buffer until the EOCF is recognized: rendering any content loaded into the display buffer and sending said rendered content to a display screen for display.
6. An apparatus for improving the viewing quality on a mobile handheld device
(MHD), comprising: a content buffer (CB) configured for starting to load content into a display buffer of said MHD from a wireless link upon a user initiating viewing of content on said MHD; an alternate content buffer (ACB) into which alternate content is simultaneously loaded from a storage containing pre-downloaded alternate content; a threshold checker for continuously checking a fill status of the CB, the threshold checker further configured for checking for an-of-content-file EOCF data block in the CB; a micro-splicer configured to stop loading the display buffer from the CB and start loading the display buffer from the ACB with alternate content if the CB fill status is below a threshold value Et, the micro-splicer configured for monitoring the CB to detect when the CB fill status reaches the threshold value
Ft, the micro-splicer configured for stopping loading of the display buffer from the
ACB at the end of a currently loading advertisement and beginning loading of the display buffer from the CB when the CB fill status reaches the threshold Ft, the micro-splicer configured to stop loading of the display buffer from the ACB and start loading the display buffer from the CB after the completion of a current advertisement if at any time the EOCF is recognized while the display buffer is being loaded from the ACB, the micro-splicer configured to continue loading the display buffer until the EOCF is recognized; and means configured to render any content loaded into the display buffer and send said rendered content to a display screen for display.
7. A method for downloading and buffering content on a mobile handheld device (MHD) prior to and during viewing of the content, comprising the steps of: buffering stored alternate-content for insertion during periods of low viewing quality, when a content buffer does not hold sufficient content during viewing of the content; and using an interval in which said buffered alternate content is viewed to refill the content buffer.
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US8418197B2 (en) 2013-04-09
US20100107191A1 (en) 2010-04-29
US20130185158A1 (en) 2013-07-18
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