Key facts
- Brand
- Texas Instruments
- Model
- TMS320C5x DSP
- Category
- Other Electronics
- Industry
- Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2026-11-02
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Texas Instruments TMS320C5x DSP Handprinted Character Recognition Application Report
This report describes how to implement handprinted character recognition (HCR) using a TMS320C5x DSP on a PCMCIA card in pen-based computers. The system uses a shared architecture among a pen-input processor, the DSP, and a main CPU. The DSP manages character libraries and performs real-time matching. The report also covers system-level software, power management, and communication between components.
The implementation was developed for use in handheld computers, particularly for financial trading applications, and demonstrates how a DSP can be used to offload HCR tasks for faster, more accurate recognition.
Texas Instruments TMS320C5x DSP specifications
| Gross bit rate | 48.6 kbps |
|---|---|
| Modulation scheme | p/4-shifted differentially encoded quadrature phase shift keying |
| Roll-off factor | 0.35 |
| Oscillator frequency | 2.048-MHz |
Source: Texas Instruments TMS320C5x DSP Telecommunications Applications Book
All Texas Instruments TMS320C5x DSP documents by type
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the main purpose of the TMS320C5x DSP in this application?
The DSP manages pen-stroke and character libraries and performs character-based matching.
From: Texas Instruments TMS320C5x DSP Handprinted Character Recognition Application Report
What type of card contains the TMS320C5x DSP and 256K bytes of SRAM?
A Type II PCMCIA-compatible card, referred to as a DSP/memory card.
From: Texas Instruments TMS320C5x DSP Handprinted Character Recognition Application Report
What is the gross bit rate for the U.S. digital cellular modem?
The gross bit rate is 48.6 kbps.
From: Texas Instruments TMS320C5x DSP Telecommunications Applications Book
What modulation method is used in the p/4-DQPSK modem?
It uses p/4-shifted differentially encoded quadrature phase shift keying.
From: Texas Instruments TMS320C5x DSP Telecommunications Applications Book