Methods and apparatus for a portable toy video/audio visual program player device - "silicon movies" played on portable computing devices such as pda (personal digital assistants) and other "palm" type, hand-held devices
OwnerStephen Beckinventor
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Abstract
A portable audio/visual program player comprising a video display, electrical-audio transducer, a central processing unit and associated logic and memory circuits. The portable audio/visual player is able to play pre-recorded programs from a memory device, which includes compress digital audio and video program information and a decoder program. The digital compression method comprises a series of compression methods to greatly reduce the amount of digital data. The data compression method is particularly suitable for motion video comprising cartoons and similar images, but is also suitable for other applications.
Claims31
A method for compressing digitized video data of a plurality of video frames comprising:
- storing a digitized data of a reference frame of the digitized video data;
- comparing a subsequent frame of the digitized video data with the digitized data of the reference frame;
- determining a boundary of a sub aperture area of the subsequent frame of digitized video data which exceeds a predetermined dissimilarity level with the reference frame;
- and
- storing digital information within the boundary of the sub aperture of the subsequent frame which exceeds the predetermined dissimilarity level.
An apparatus for playing a compressed audio and video data file corresponding to a prerecorded audio-video program comprising:
- a hand-held digital video processing device having a video display screen, an electrical-audio transducer and a central processing unit electrically connected to the video display screen and the electrical-audio transducer for reproducing the video and audio program;
- a program storage media containing asymmetrically compressed digitized audio and video information coupled to the central processing unit of the hand-held video processing device for transferring the digitized audio and video information;
- and
- a control storage media containing a decoder program for decoding the compressed digitized audio and video information coupled to the central processing unit for controlling in part the reproduction of the compressed digitized audio and video information.
A method for compressing digitized audio and moving video information comprising a plurality of frames of data, the method comprising:
- separating the digitized audio and moving video information into digitized audio information and digitized video information.
- reducing the frequency range of the digitized audio information by filtering out substantially all of the audio data above a predetermine first frequency and filtering out substantially all of the audio data below a predetermined second frequency to form a reduced first audio data set;
- performing an ADPCM encoding process on the reduced first audio data set to form a reduced second audio data set;
- storing the reduced second audio data set in a first memory;
- reducing the number of frames of moving video information;
- comparing a first reference frame of video data with a subsequent first frame of video data;
- quantifying difference between the first reference frame of video data and the subsequent first frame of video data;
- applying a first metatag identifier to the first reference frame of video data;
- applying a second metatag identifier to the subsequent first frame of video data;
- replacing the subsequent first frame of video data with the first metatag identifier when a quantified difference between the first reference frame of video data and the subsequent frame of video data exceeds a predetermined value;
- compressing the digitized video information by means of a LZSS process to form a post-LZSS compressed video data file;
- and
- storing the post-LZSS compressed video data file in a second memory.
14-15. (canceled)
A method comprising:
- retrieving audio data and video data in an asymmetrically compressed format from a medium in communication with a portable device;
- decompressing the audio data and video data to be displayed through the portable device;
- and
- synchronizing the audio data and video data during playback using corresponding metatags in each of the audio data and video data.
Dependencies are inferred from the claim text.