Record Player Tone Arm Control for Repeatable Track Playback
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Solution Overview
Problem
Traditional record players lack advanced control mechanisms for operations such as remote control, fast forward, fast rewind, and repeatable playback, limiting user convenience and functionality.
Innovation Solution
A record player with a tone arm system that incorporates an encoder component to encode the rotary angle, a control circuit board connected via wireless communication, and mechanisms for lifting, sliding, and horizontal swinging to enable precise track selection and repeatable playback, facilitated by a wireless connection to an external control terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If mechanical structures are used for tone arm operations, then the structure is simple and cost is low, but functions are relatively single and complex operations cannot be implemented
Solution Approach 1:
The patent replaces traditional mechanical control structures with an electronic control system. The control circuit board, encoder component, and wireless communication module enable electronic control of the tone arm, replacing purely mechanical operations with electronically controlled mechanisms that support complex functions like remote control, fast forward, fast rewind, and repeatable playback while maintaining structural simplicity through modular design.
Solution Approach 2:
The control circuit board serves multiple functions: it controls the lifting and sliding mechanism, the horizontal swinging mechanism, receives wireless signals, processes encoder data, and manages various playback modes. This multi-functional electronic control system resolves the contradiction by providing diverse functionalities without requiring separate mechanical systems for each function.
2Ease of operation
If electronic technology is introduced to improve control, then control capability is improved, but device complexity increases
Solution Approach 1:
The patent introduces electronic control components (control circuit board, encoder, wireless communication module) to replace and enhance traditional mechanical control. These electronic components provide precise control capability for the tone arm while managing complexity through integrated circuit design and modular architecture, where the control circuit board consolidates multiple control functions in a single component.
Solution Approach 2:
The control circuit board acts as an intermediary between the user interface (wireless communication module) and the mechanical execution mechanisms (lifting and sliding mechanism, horizontal swinging mechanism). This intermediary layer simplifies the overall system by providing a centralized control point that coordinates all electronic signals and mechanical actions, reducing the complexity that would arise from direct connections between all components.
3Measurement precision
If position sensor is used for position control, then position accuracy is improved, but playback mode enrichment is limited
Solution Approach 1:
The control circuit board, working with the position sensor and encoder, provides not only accurate position control but also enables multiple playback modes including repeatable playback, fast forward, fast rewind, and remote control. The electronic control system uses the position information from the sensor and encoder to implement various playback functions, transforming a single-function positioning system into a multi-functional playback system.
Solution Approach 2:
The encoder component and position sensor provide feedback to the control circuit board about the tone arm's position. This feedback mechanism enables the system to accurately control playback positioning and implement repeatable playback by remembering and returning to specific positions. The feedback loop allows the system to enrich playback modes while maintaining precise position control.
4Ease of operation
If remote control function is added, then operation convenience is improved, but system complexity increases
Solution Approach 1:
The wireless communication module serves as an intermediary between the remote control interface and the control circuit board. It receives wireless signals from external devices and converts them into control commands that the control circuit board can process. This intermediary layer adds remote control functionality while managing system complexity by providing a standardized interface for wireless communication and signal processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables selectable region playback and repeatable playback functions, enhancing user convenience through remote control capabilities and improving the music playback experience.
Implementation Method 1
an encoder component encodes a rotary angle of a tone arm, and therefore, a position of a record may be recognized
Implementation Method 2
the lifting and sliding mechanism is configured to control a tone arm to lift and lower
Implementation Method 3
the horizontal swinging mechanism is configured to control the tone arm shaft to rotate
Implementation Method 4
a gear transmission structure is disposed on one side, close to the gear, of the rotating arm positioning component, the gear transmission structure is in engagement and transmission connection with the induction gear
Data Source
AI summary
The present invention relates to the technical field of record players, and in particular, to a record player with repeatable playback, including a fixing base; and a tone arm body, a tone arm shaft, a circuit control assembly, a lifting and sliding mechanism, and a horizontal swinging mechanism that are disposed on the fixing base respectively. An upper end of the tone arm shaft is connected to one end of the tone arm body, and the tone arm shaft is rotatably disposed on the fixing base. The circuit control assembly includes a support frame; and a control circuit board, an encoder component, a rotating arm positioning component, and an induction gear that are disposed on the support frame. A gear transmission structure is disposed on one side, close to the gear, of the rotating arm positioning component.