18624938. ACTIVE PEN AND SENSOR INTEGRATED CIRCUIT simplified abstract (Wacom Co., Ltd.)

ACTIVE PEN AND SENSOR INTEGRATED CIRCUIT

Organization Name

Wacom Co., Ltd.

Inventor(s)

Masayuki Miyamoto of Saitama (JP)

ACTIVE PEN AND SENSOR INTEGRATED CIRCUIT - A simplified explanation of the abstract

This abstract first appeared for US patent application 18624938 titled 'ACTIVE PEN AND SENSOR INTEGRATED CIRCUIT

Simplified Explanation: The patent application describes an active pen that simplifies phase acquisition for receiving downlink signals, using a frequency dividing circuit to generate carrier waves. This reduces unused time between active pens in one time slot.

• Key Features and Innovation:

   - Active pen transmits symbol values in one time slot.
   - Frequency dividing circuit generates multiple carrier waves with different frequencies.
   - Modulation circuit transmits downlink signals using common symbol duration.

• Potential Applications:

   - Digital writing devices
   - Interactive whiteboards
   - Smart styluses for tablets

• Problems Solved:

   - Simplifies phase acquisition for downlink signals
   - Reduces unused time between active pens

• Benefits:

   - Improved signal reception
   - Enhanced synchronization between active pens
   - Efficient use of time slots

• Commercial Applications:

   - "Innovative Active Pen Technology for Enhanced Digital Writing Experiences"

• Prior Art:

   - Researchers can explore prior patents related to active pen technologies and frequency division in signal transmission.

• Frequently Updated Research:

   - Stay updated on advancements in active pen technologies and signal modulation techniques.

Questions about Active Pen Technology:

1. How does the frequency dividing circuit in the active pen contribute to signal transmission efficiency?

   - The frequency dividing circuit generates multiple carrier waves with different frequencies, allowing for improved signal reception and reduced interference.

2. What are the potential market implications of this innovative active pen technology?

   - The technology could revolutionize digital writing devices, interactive whiteboards, and other stylus-based applications, leading to increased demand in the education and business sectors.

Original Abstract Submitted

An active pen is provided, which facilitates avoiding complex computation for phase acquisition on the side of a sensor integrated circuit configured to receive downlink signals from active pens, and allows for generating carrier waves for the downlink signals using a simple configuration, namely, a frequency dividing circuit, while reducing a difference in unused time in one time slot between the active pens. An active pen is configured to transmit one or more symbol values in one time slot, and includes a frequency dividing circuit configured to frequency-divide a reference clock with a frequency division ratio based on each of a plurality of frequencies different from each other, to thereby generate a plurality of carrier waves having frequencies different from each other. The active pen includes a modulation (transmission) circuit configured to transmit a first downlink signal in a symbol duration that is common among the plurality of frequencies, the first downlink signal obtained by modulating a first carrier wave, which is among the plurality of carrier waves generated by the frequency dividing circuit , with a value of a first symbol that is a transmission target.