PDA Broadcast Viewing History Synchronization

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Solution Overview

Problem

Existing personal digital assistant (PDA) and video recording and reproduction systems lack convenience in use, as user viewing habits on PDAs are not reflected in indoor TV receivers, requiring users to manually navigate and remember program positions for continuation, and existing solutions do not facilitate seamless integration or remote control of settings.

Innovation Solution

A PDA apparatus with a reception unit for broadcast signals, a communication unit for interacting with a recording and reproduction apparatus, a display unit for showing program information, and a storage unit for viewing history, allowing the PDA to send commands for recording or reproducing based on user viewing habits, enhancing user convenience by synchronizing viewing data across devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If a personal digital assistant apparatus is used for viewing broadcast programs while out, then portability is improved, but screen size is limited which restricts viewing quality

Engineering Contradiction:
ImproveportabilityVSAvoidscreen size
Core Design Contradiction:
Weight of moving objectVSArea of moving object

Solution Approach 1:

The viewing system is divided into two segments: a portable PDA for receiving broadcast signals and storing viewing history, and a separate indoor recording and reproduction apparatus for high-quality playback. This segmentation allows the user to enjoy the benefits of both small-form-factor portability and large-screen viewing quality by using different devices for different purposes.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If viewing history is not stored in the PDA, then device complexity is reduced, but the user cannot easily continue viewing from the same position on a large screen

Engineering Contradiction:
Improveease of continuation viewingVSAvoidviewing history storage and synchronization
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The PDA automatically stores viewing history information during the viewing process and transmits it to the recording and reproduction apparatus before the user leaves. This preliminary action ensures that when the user returns and uses the indoor apparatus, the system already has the necessary information about where the user left off, enabling seamless continuation viewing without requiring the user to manually search or remember the program position.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system establishes a feedback loop where the PDA transmits viewing history to the recording and reproduction apparatus, which then uses this information to automatically position the playback at the correct point. This feedback mechanism eliminates the need for the user to manually navigate through programs to find the continuation point, significantly improving ease of operation.

Inventive Principle:
Principle #23Feedback

3Loss of time

If the user manually searches for program continuation position, then device complexity is reduced, but time consumption increases

Engineering Contradiction:
Improvetime for finding continuation positionVSAvoidmanual operation requirement
Core Design Contradiction:
Loss of timeVSEase of operation

Solution Approach 1:

The recording and reproduction apparatus performs self-service by automatically retrieving viewing history information from the PDA and positioning the playback at the correct continuation point without requiring any manual search or intervention from the user. The system serves itself by using the stored viewing history to automatically resume playback, eliminating both time consumption and manual operation requirements.

Inventive Principle:
Principle #25Self-service

4Ease of operation

If viewing situation on PDA is not reflected in indoor TV, then system simplicity is maintained, but user convenience deteriorates

Engineering Contradiction:
Improveconvenience of viewing continuationVSAvoidintegration between PDA and TV system
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The PDA serves as an intermediary device that bridges the portable broadcast reception function and the indoor recording and reproduction function. It stores viewing history information and transmits it to the indoor apparatus, enabling the indoor system to understand and reflect the user's viewing situation without requiring direct complex integration between the PDA and TV receiver. The PDA acts as a mediator that simplifies the overall system architecture while maintaining high user convenience.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS7362952B2Personal digital assistant apparatus
Publication Date: 2008.04.22 MAXELL LTD
  • US7362952B2 patent drawing
  • US7362952B2 patent drawing
  • US7362952B2 patent drawing

AI summary

A personal digital assistant (PDA) apparatus and a recording and reproduction apparatus improved in convenience in use by reflecting the viewing situation in the PDA into the recording and reproduction apparatus are provided. The PDA includes a reception unit for perceiving a broadcast signal including program information, a communication unit for communicating with the recording and reproduction apparatus, which records/reproduces a broadcast signal, a display unit for displaying the program information and video information included in the broadcast signal, a storage unit for storing viewing history of a received and displayed video signal, and an operation unit for operating viewing in the apparatus. Based on viewing history stored in the storage unit, an order signal is sent to the recording and reproduction apparatus via the communication unit to order reproduction of information relating to the viewing history from among information stored in the recording and reproduction apparatus.